CIRCULAR

30 PROCEDURES FOR INSPECTION OF SAFETY OF MACHINERY, EQUIPMENT AND SUPPLIES TO WHICH STRICT OCCUPATION SAFETY REQUIREMENTS ARE APPLIED UNDER ADMINISTRATION OF MINISTRY OF LABOUR, INVALIDS AND SOCIAL AFFAIRS

Pursuant to the Law on Occupational Safety and Health dated June 25, 2016;

Pursuant to the Decree No.106/2012/ND-CP dated December 20, 2012 of the Prime Minister on functions, tasks, powers and organizational structure of the Ministry of Labour, Invalids and Social Affairs;

Pursuant to the Decree No.44/2016/ND-CP dated May 15, 2016 of the Government on some specific articles of the Law on Occupational Safety and Health on occupational safety inspection, provision of training in occupational safety and occupational hygiene, and working environment observation;

At the request of general director of Department of Occupational Safety;

The Minister of Labour, Invalids and Social Affairs promulgates the circular on 30 procedures for inspection of safety of machinery, equipment and supplies to which strict occupation safety requirements are applied under administration of Ministry of Labor, Invalids and Social Affairs.

Article 1. Scope and regulated entities

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2. This Circular shall be applied to organizations and individuals inspecting occupational safety of machinery, equipment and supplies to which strict occupation safety requirements are applied under administration of Ministry of Labor, Invalids and Social Affairs.

Article 2. Effect

1. This Circular shall come into force from June 1, 2017.

2. This Circular replaces the Circular No.07/2014/TT-BLDTBXH and Circular No. 46/2015/TT-BLĐTBXH.

Article 3. Implementation

1. The Department of Occupational Safety affiliated to the Ministry of Labor, War Invalids and Social Affairs organizations carrying out occupational safety inspection and relevant organizations and individuals are responsible for implementation of this Circular.

2. Any problem that arises during the implementation of this Circular should be reported to the Ministry of Labor, Invalids and Social Affairs./.

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PROCEDURES FOR INSPECTION OF SAFETY OF ROLLER COASTERS

QTKĐ: 27- 2016/BLĐTBXH

Preface

 Procedures for inspection of safety of roller coasters are drafted by Department of Occupational Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of The Ministry of Labour, Invalids and Social Affairs.

PROCEDURES FOR INSPECTION OF SAFETY OF ROLLER COASTER

1. SCOPE AND REGULATED ENTITIES

1.1. Scope

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1.2. Regulated entities

- Organizations carrying out occupational safety inspection;

- Occupational safety inspectors

2. REFERENCES

- TCVN 4244:2005, Lifting appliances – Design construction and survey;

- TCVN 9361:2012, Foundation works - Check and acceptance;

- TCXD 170:2007, Steel structures – Fabrication, assembly, check and acceptance – Technical requirements;

- QCXDVN 05:2008/BXD, Dwellings and Public Buildings - Occupational Health and Safety;

- TCVN 5638:1991, Evaluation of quality of building and installation activities – Basic principles.

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- TCVN 9358:2012 Installation of equipment earthing system for industrial projects - General requirements;

- TCXDVN 9385:2012: Protection of structures against lightning - Guide for design, inspection and maintenance;

- Standard GB 8408: 2008, Amusement device safety code

In the cases where national technical standards and regulations referred to in this document are amended or replaced, regulations of the latest documents shall apply.

Other standards may be applied to roller coaster safety inspection at the request of its manufacturer or owner if such standards contain the same or higher safety criteria than those in the national standards referred to in this document.

3. TERMS AND DEFINITIONS

In addition to terms in the above invoked and referenced documents, the following terms are used in description of this procedure:

3.1. Roller coaster:

An amusement ride in which a train use initial kinetic energy or potential energy to move on a rail system. The train is fixed on a rail for traveling only along the rail and without travelling in other directions.

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Nominal load is 90 kg, which is equivalent to a person

3.3 Dummy load:

A dummy load is an object with a suitable shape and size for loaded test, which has the weight of 100% or 110% of the nominal load.

3.4. Roller coaster for children;

Maximum height of a rider is 1375 mm.

3.5. Roller coaster for adults:

Minimum height of a rider is 1320 mm

3.6. First safety inspection:

First safety inspection is inspection of safety of the ride according to national technical standards and technical safety standards after its installation and before its first use.

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Periodic safety inspection is inspection of safety of the ride according to national technical standards and technical safety standards after expiration of the last safety inspection result.

3.8. Unscheduled safety inspection:

Unscheduled safety inspection is inspection of safety of the ride according to national technical standards and technical safety standards and will be carried out:

- after a repair or upgrade that affects the safety of the ride;

- after relocation of the ride; and

- at the request of the owner or a competent authority.

4. INSPECTION STEPS

Safety inspection shall be carried out in the following order:

- Inspection of the profile of the roller coaster;

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- Technical inspection – No-load test;

- Loaded test – Test methods;

- Inspection of rescue process in case of an accident;

- Processing inspection result.

Note: only take the next step if the previous step is passed. The result of each step shall be recorded according to the form in the Appendix 1 and retained by the inspecting organization.

5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations and law.

 Inspection equipment includes:

- Altometer;

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- Distance measuring equipment

- Geometric inspection equipment;

- Photometer;

- Force meter and hand scale;

- Insulation resistance meter;

- Ground resistance tester

- Multimeter

- Clamp meters;

- Nondestructive flaw detector (if necessary);

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- Automatic level (if necessary)

6. CONDITIONS FOR INSPECTION

The inspection must not be carried out unless the following conditions are met:

6.1 The ride is ready for inspection.

6.2 Documents about the ride are adequate.

6.3 The inspection is not affected by weather.

6.4. Occupational safety and occupational hygiene operation of the ride are met.

7. PREPARATION FOR INSPECTION

7.1. Before carrying out the inspection, the inspecting organization and the owner shall reach an agreement on an inspection plan and prepare for the inspection and assign staff to participate in and witness the inspections.

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The documents to be inspected vary according to the inspection. To be specific:

7.2.1 Regarding first inspection:

- The profile of a roller coaster, which consists of the following documents:

+ Certificates of the metals used for the ride and welding;

+ Calculation of strength of load-bearing parts;

+ Structural drawings which specify all main dimensions;

+ Guidelines for operation and maintenance.

- Release documents:

+ Certificates of the metals used for the ride and welding;

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+ Commissioning record;

+ As-built document;

- Reports on calibration of measurement equipment; record on inspection of insulation resistance and protective devices (if any).

- Documents on safety measurement results of equipment and relevant systems: earthing, lightning protection, electricity and other protective systems (drafted according to the manufacturer’s documents or documents approved by competent authorities)

- Documents on foundation: Documents on foundation commissioning (the design approved by competent authorities, as-built drawings and other testing results, if any).

- Documents on installation: as-built drawings, commissioning record

- Certificate of conformity issued by authorized organizations in accordance with regulations and law.

Regarding periodic inspection:

- The previous profile, inspection record and inspection result;

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Regarding unscheduled inspection:

- In case of upgrade or repair: documents on design and renovation, repair and commissioning record.

- In case of relocation: installation documents.

- The inspection record issued by competent authority (if any).

The result is considered satisfactory if the documents are adequate and requirements specified in 7.2. are satisfied. If the inspection result is unsatisfactory, the owner shall take remedial actions.

7.3. Prepare suitable and adequate equipment for inspection.

7.4. Develop measures for ensuring safety and reach an agreement with the owner before inspection. Provide adequate personal protective equipment to ensure safety during the inspection.

8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

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8.1.1. Inspect the structure:

- Inspect the foundation, supports and their connection.

- Inspect the joints connecting the parts in the system by specialized tools.

- Use nondestructive testing methods (penetration testing, ultrasound, or radiography) to inspect important welding joints such as those of the rail, the support, main bearing structure.

8.1.2. Inspection of the propelling system:

- Maximum linear velocity at the cabin: 45km/h for roller coasters for adults and 16km/h for roller coasters for children.

- Inspect parameters of the propelling system with specialized equipment.

- Inspect insulation resistance of the engine at various voltage levels:

Nominal voltage

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Insulation resistance

≤250

250

 ≥0.25

≤500

500

≥0.5

>500

1000

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- Inspect the transmission parts of the propelling system, which generates necessary potential energy.

- Inspect the brake systems.

8.1.3. Inspection of cars:

- Inspection of labels in each car, maximum capacity and load.

- Structure of the cars.

- Wheels.

- Riders’ seats.

- Inspect the restraints and seat belts.

- Inspection of the safety mechanism that prevent the axles from breaking, which may results in derailment.

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8.1.4 Inspect the station and electrical systems, including:

- The handrails and signs.

- Inspect the roof.

- Inspect the control room

- Inspect the parking floor and access from parking lot to the cars

- Inspect the power supply layout

- Inspect the earthing system: ≤ 4.0 Ω

- Inspect the control circuits.

- Inspect the lighting equipment.

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- Inspect the compliance with applicable regulations on fire protection.

8.1.5. Inspect the safety systems:

- Inspect the safety lock in the cars.

- Inspect the seatbelts.

- Inspect the alarm system and signalling system.

The result is considered satisfactory if no damage or defect is found, all parts are working as designed and the requirements in section 8.1 are met.

 No-load testing:

- Inspection of insulation resistance of the ride.

- No-load testing shall be run only when external inspection is done and the result is satisfactory.

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The inspection result is satisfactory if the parameters are corrects, and all functions work as designed without signs of errors.

8.3 Overload testing:

- Test at 110% of normal load.

- Load norm of a car equals its testing load multiplied by capacity.

- Based on distribution of cars, load them to create random imbalance of the train in all 4 directions (front, rear, left, right). Each time imbalance is created, run the ride 3 rounds to evaluate its operation. Pay attention to the parts bearing heavier load.

The inspection result is considered satisfactory if the ride operates stably without signs of errors or damage affecting its safety and cars stop at to correct position.

 Inspection of rescue function:

- Run the ride at 100% of at the positions that are most difficult for the rescue staff. Inspect the removal of the safety parts to take riders back to the station safely.

- Inspect the backup power generator and batteries that are used for removal of safety parts if they are available.

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9.1 Prepare an inspection record which contains sufficient information according to the form in the Appendix 02 hereto attached.

9.3. Approve the inspection record:

Mandatory participants in the process of approving the inspection record:

- The representative or a person authorized by the ride owner;

- A witness;

- The inspector.

When the record is approved, the inspectors, the witness, and the representative or a person authorized by the ride owner shall append their signatures and seals (if any) on the record The record shall be made into 02 copies, one for each party.

9.3. Write the brief inspection result to the profile of the roller coaster (including full names of inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the inspection result of a roller coaster is satisfactory, inspectors shall put an inspection stamp on it at a noticeable position.

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9.5.1. If the inspection result is satisfactory, the inspecting organization shall issue the certificate of inspection results to the roller coaster within 5 working days from the day on which the inspection record is approved.

9.5.2. If the inspection result is not satisfactory, only the steps in 9.1 and 9.2 shall be taken and the inspection record must specify the explanation for unsatisfactory result, necessary remedial actions and a deadline for taking such actions. The inspection shall be sent to the employment authority of the area where the roller coaster is located.

10. INSPECTION INTERVAL

10.1 A roller coaster has to be inspected every 3 years. Notice: The following inspection tasks shall be carried out on an annual basis: external inspection, no-load testing and rescue testing (according to Clause 1, 2 and 4 of Section 8 of this procedure).

10.2. In the case where a shorter interval is demanded by the manufacturer or owner, such interval shall apply.

10.3. If the inspection interval is shortened, the inspector shall provide explanation in the inspection record

10.4. If the inspection interval is specified in national technical regulations, such regulations shall apply.

APPENDIX 01

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 (Name of inspecting organization)

THE SOCIALIST REPUBLIC OF VIETNAM

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 ON-SITE RECORD

No.: …………….

(written by the inspector)

1- General information

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Name of the owner:....................................................................

Address (head office of the owner):……………………………………………………

Address (location) of the ride:……………………………………………………………………

Content of the meeting with the owner:

- Representative: ( information)

- Witnesses:

2- Basic parameters

- Code:............................................  

- Maximum players/car:……………..

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- Maximum load:…………………kg

- Production year: .................................

- Total track length: ....................... m

- Manufacturer: .....................................

- Maximum /minimum height: ................... m

- Number of cars: ...........................      

- Diameter of helix:………………………….m

- Maximum speed:……………….  Km/h  

- Uses: ............................................... ...

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- Machine profile:…………………………………………………………………………………

- Technical documents:

- Inspection of design and as-built document.

- Measurement results of earthing and lightning protection systems:……….

4- Code of measurement equipment:

5- Ride inspection:

a. External inspection:

+ Inspection of structure:

+ Inspection of the propelling system:

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+ Inspection of the station and electrical system:

+ Inspection of safety system:

b. Technical inspection:

+ Inspection of speed:

c. Testing at 110% load

+ Brake:

+ Metal structure:(

+ Stop position of cabin:

d. Rescue testing:

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7. Processing and evaluation of inspection results.

8- Remedial actions: (if any)

WITNESS
(Signature and full name)

INSPECTOR
(Signature and full name)

APPENDIX 02

SPECIMEN OF THE SAFETY INSPECTION RECORD

 ( Name of inspecting organization)

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……………., ……..

SAFETY INSPECTION RECORD
( ROLLER COASTER)

No.:………………..
(According to on-site record No:……………….)

We are:

1. ……………………………………..Inspector number:.........................................................

2. …………………………………….. Inspector number…………………………………………

Inspecting organization:……………………………………………………………………………

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Name of the inspected ride:……………………….. …………………………………

Name of the ride owner:…………………………………………………………..

Address (head office of the owner):…………………………………………………………..

Address (location) of the ride:……………………………………………………………………

 Inspection procedures, applied standards: .......................................................................

Witness:……………………………………………………

1……………………………………..            Position:…………………………….

2……………………………………….           Position:……………………………….

I-BASIC PARAMETERS OF EQUIPMENT

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- Maximum players/ car:……………..

- Number of fabrication:……………………

- Maximum load:……………….kg

- Year of production:……………………..      

- Total track length: ........................ m

- Manufacturer:………………………….    

- Maximum / minimum height: ..................... m

- Number of cars:…………………      

- Diameter of helix: ......................... m

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- Uses:…………………………………………..

II- FORMS OF INSPECTION

First time        Periodic       Unscheduled

Reasons for unscheduled inspection:……………………………………………………………

III- INSPECTION CONTENT:

Document inspection:

No.

Inspection content

Satisfactory

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Note

No.

Inspection content

Satisfactory

Unsatisfactory

Note

1

Lift profile

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Document on foundation structure

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No:

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Documents on management and operation

B. External inspection; no-load testing :

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 Inspected parts

Satisfactory

Unsatisfactory

Note

No.

 Inspected parts

Satisfactory

Unsatisfactory

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1

Foundation, supports and support connection

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Electrical system

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2

 Cars (Structures, wheels, restraints)

9

Lighting devices

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Guiding rail system

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 Station
(Structure, fence, signs)

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Earthing and lightning prevention system

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Steel structure

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Signalling system

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Electrodynamics system

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Lubrication system

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Control system

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Pneumatic brake system

C- Load testing: parameters check:

No.

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Satisfactory

Unsatisfactory

Note

No.

 Inspected parts

Satisfactory

Unsatisfactory

Note

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Steel structure system

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Brake system

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 Velocity

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Motor current

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 Cars (Structures, wheels, restraints)

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 Connection between the cars

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Propelling system

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Control system

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Rescue plan

IV- CONCLUSIONS AND RECOMENDADTIONS

1. Result:  Satisfactory □   Unsatisfactory □

Maximum load:…………….. kg/person

2. Inspection stamp No:…………… At:……………

3. Necessary remedial actions:…………………

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V- INSPECTION INTERVAL

Date of next inspection :

Reasons for shortened interval (if any):

The record is approved on:

At:…………………………………  

The record is made into of ……copies, each party holds…. copies./.

Owner
(commitment to implementationf the recommendations)
(Signataure and stamp)

Witness
(Signature and full name)

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PROCEDURES FOR INSPECTION OF SAFETY OF ELECTRIC LIFT

QTKD: 21- 2016/BLDTBXH

Foreword

Procedures for inspection of safety of electric lift are drafted by the Department of Occupational Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of the Ministry of Labour, Invalids and Social Affairs.

PROCEDURES FOR INSPECTION OF SAFETY OF ELECTRIC LIFT

1. SCOPE AND REGULATED ENTITIES

1.1. Scope

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Such procedures shall not apply to wheel lifting equipment, mining lifts, stage lifts, ship lifts, exploratory lifting platforms, onshore drilling rigs, construction lifts and other special types. Such procedures shall not apply to some special cases such as: explosive atmospheres, extreme weather, seismic hazard, carriage of dangerous objects, class V lift classified under TCVN 7628: 2007, equipment whose guide rails form an angle of more than 15 degrees relative to the perpendicular.

1.2. Regulated entities

- Organizations carrying out occupational safety inspection;

- Occupational safety inspectors.

2. 2. REFERENCES

- QCVN 02:2011/BLDTBXH, National technical regulation on safe work for electric lift;

- TCVN 6395:2008, Safety requirements for the construction and installation;

- TCVN 6904:2001, Electric lift - Test methods for the safety requirements of construction and installation;

- TCVN 7628:2007 (ISO 4190), Lift installation;

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- TCVN 9358: 2012 Installation of equipment earthing system for industrial projects - General requirements;

- TCVN 9385:2012: Protection of structures against lightning - Guide for design, inspection and maintenance

In the cases where national technical standards and regulations referred to in this document are amended or replaced, regulations of the latest documents shall apply.

Other standards may be applied to electric lift safety inspection at the request of its manufacturer or owner if such standards contain the same or higher safety criteria than those in the national standards referred to in this document.

3. TERMS AND DEFINITIONS

In addition to terms in the above invoked and referenced documents, the following terms are used in description of this procedure:

3.1. “lift” is the lifting equipment that carries people to specific landing floors, has a cabin with suitable dimensions and system to carry people and objects and move along guide rails placed in vertical directions or forming an angle of 15 degree at maximum relative to the perpendicular.

3.2. “first safety inspection” is inspection of safety of the lift according to national technical standards and technical safety standards after its installation and before its first use.

3.3. “periodic safety inspection” is inspection of safety of the lift according to national technical standards and technical safety standards after expiration of the last safety inspection result.

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- after a repair or upgrade that affects the safety of the lift;

- at the request of the owner or a competent authority.

4. INSPECTION STEPS

Safety inspection shall be carried out in the following order:

- Inspection of the profile of the lift;

- External inspection;

- Technical inspection – No-load test;

- Loaded test – Test methods;

- Inspection result processing.

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5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations and law. Inspection equipment includes:

- Altometer (speedometer);

- Distance measuring equipment;

- Geometric inspection equipment;

- Thermometer;

- Photometer;

- Insulation resistance meter;

- Ground resistance tester;

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- Clamp meters;

- Automatic level (if necessary).

6. CONDITIONS FOR INSPECTION

The inspection must not be carried out unless the following conditions are met:

6.1. The lift is ready for inspection.

6.2. Documents about the lift are adequate.

6.3. The inspection is not affected by weather.

6.4. Occupational safety and occupational hygiene operation of the lift are met.

7. PREPARATION FOR INSPECTION

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7.2. Inspect the profile of the lift, which consists of the following documents.

The documents to be inspected vary according to the inspection. To be specific:

7.2.1 Regarding first inspection:

7.2.1.1. The profile of a lift, which consists of the following documents:

- General representation that displays product codes; production year; number of floors served, rated load and main technical specifications of the lifting system, e.g. controlling, safety equipment, pull machine, rope, durability.

- Layout of installation of component sets, cable and parts installation diagram.

- Plan for perspective view of an electric lift that shows its sizes, main parameters and cabin dimensions;

- Operating principle diagram;

- Instructions for operation and emergency response;

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7.2.1.2. Documents on installation:

- As-built drawings and commissioning records;

- Results of ground resistance test and insulation resistance test (if any).

7.2.2 Regarding periodic inspection:

- The previous profile and inspection result;

- Documents on the use, operation and maintenance of the lift; inspection record (if any).

7.2.3 Regarding unscheduled inspection:

- Documents on design, renovation and repair;

- Commissioning record after renovation and repair;

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The result is considered satisfactory if the documents are adequate and requirements specified in 7.2.1, 7.2.2, 7.2.3 are satisfied.  If the inspection result is unsatisfactory, the owner shall take remedial actions.

7.3. Prepare suitable and adequate equipment for inspection.

7.4. Develop measures for ensuring safety and reach an agreement with the owner before inspection. Provide adequate personal protective equipment to ensure safety during the inspection.

8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

8.1. External inspection, which includes the following tasks:

8.1.1. Inspect the adequacy and uniformity of the lift: carry out an assessment according to Article 3.2 of TCVN 6904: 2001.

8.1.2. Inspect the accuracy of the manufacturer’s documents and installation versus reality (regarding parameters, technical criteria and trademark).

8.1.3. Inspect defects and deformation of parts and machinery (if any).

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The result is considered satisfactory if the lift is uniform and installed in accordance with the design, no damage, defect or error is found and requirements specified in 8.1 are satisfied.

8.2. Technical inspection – No-load test:

8.2.1. Inspect machine room and equipment in the machine room:

- Inspect the installation of equipment in the machine room: carry out an assessment according to Articles 5.1.1 and 5.1.2 of TCVN 6395:2008;

- Inspect the entrance of the machine room, levels of the handrails and stairs in the machine room: carry out an assessment according to Sections 5.1 and 5.2 of TCVN 6395: 2008;

- Inspect location of machinery, electrical enclosures, measurement of safe distance between them and building structures in the machine room: carry out an assessment according to Section 5.3.2 of TCVN 6395: 2008;

- Inspect insulation resistance: carry out according to Article 11.1.5 of TCVN 6395:2008;

- Inspect travelling cable - counterweight: diameter, wear, cable fixation, etc.: carry out an assessment according to 7.9.1 TCVN 6395:2008;

- Inspect the rope of the overspeed governor: carry out an assessment according to Section 9.3.6 of TCVN 6395-2008;

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- Inspect electric brake: technical condition of brake drum, brake shoe, brake string and carry out an assessment according to Sections 10.3.3.1, 10.3.3.2, 10.3.3.4, 10.3.3.7 of TCVN 6395: 2008;

- Inspect pulleys, direction of rope and rope shielding: carry out an assessment according to clauses 7.9.6.1 and 7.9.6.2 of TCVN 6395: 2008;

- Inspect the arrangement of distribution boards and switches in the machine room: carry out an assessment according to Sections 11.4.1, 11.4.2 and 11.4.3 of TCVN 6395:2008;

- Inspect the electrical wiring installation from the main distribution boards to the electrical enclosures, from electrical enclosures to components of machines: carry out an assessment according to Sections from 11.5.1 to 11.5.12 of TCVN 6395:2008.

8.2.2. Inspect cabin and equipment in cabin

- Inspect the gap between the two cabin doors, gap between the door and the cabin frame: carry out an assessment according to Article 7.5.4 of TCVN 6395:2008.

- Regarding the hinged doors: Inspect and assess according to Article 7.5.5 of TCVN 6395-2008;

- Inspect technical condition and operation of toe guard: carry out an assessment according to Article 7.5.10.2.3 of TCVN 6395-2008;

- Inspect electrical equipment safety, control the opening and closing operation of cabin door: carry out an assessment according to Article 7.5.11.1 of TCVN 6395-2008;

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- Inspect horizontal safe distance between the cabin door sill and floor sill, which shall not exceed 35 mm.

8.2.3. Inspect cabin roof and relevant equipment

- Inspect the space of the top of headroom: carry out an assessment according to Article 4.6.1 of TCVN 6395:2008.

- Inspect the cable fixed points at the cabin and counterweight.

- Inspect the trapdoor on the cabin roof and condition of electrical safety contact, control the opening and closing operation of trapdoor: carry out an assessment according to Sections 7.6.1 and 7.6.3 of TCVN 6395:2008.

- Inspect the balustrade on the cabin roof: carry out an assessment according to Section 7.3.5.3 of TCVN 6395:2008;

- Inspect the counterweight frame, installation of counterweight plates in the frame and fixation of plates in the frame.

- Inspect the cabin guide rails and counterweight: carry out an assessment according to Section 7.10.2 of TCVN 6395:2008.

- Inspect the safe distance between the cabin and counterweight, including the overhanging part of the two components, which shall not be less than 0.05 mm.

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- Inspect other equipment installed in the well: carry out an assessment according to Article 4.1.3 of TCVN 6395:2008.

- Inspect the well cover: carry out an assessment according to Article 4.2.1 of TCVN 6395:2008.

- Inspect the rescue doors and inspection doors: carry out an assessment according to Article 4.2.2 of TCVN 6395:2008.

- Well ventilation: the section of a ventilation hole shall not be less than 1% of the cross-sectional area of the well.

- Inspect installation and operation of the upper travel control equipment.

8.2.5. Inspect landing doors.

- Inspect the gap between the two wings, between the wing and frame: it shall not exceed 10 mm. 

- Inspect the equipment for control the opening and closing operation of landing doors: inspect technical condition, mechanical interlocks and electrical contacts.

8.2.6. Inspect pit.

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- Inspect technical condition, location of main distribution board in the pit bottom, including switches and sockets.

- Inspect installation and operation of the lower travel control equipment.

- Inspect the pit depth and vertical distance between the pit bottom and the lowest part of cabin bottom: carry out an assessment according to Section 4.6.3.5 of TCVN 6395: 2008.

- Inspect buffer: Inspect electrical contact of position control system (in case of energy absorber) and inspect the compression stroke of the buffer (Appendix L-TCVN 6395:2008).

- Inspect pulley, counterweight overspeed governor rope:

+ Condition of articulation of counterweight balanced beam;

+ Protection of pulley;

+ Slack-rope device.

8.2.7. No-load testing:

...

...

...

The result is considered satisfactory if the equipment works as designed without signs of errors.

8.3. Loaded test – Test methods:

8.3.1. In-motion loading test wherein the lift carries 100% of rated load:

Load the cabin floor evenly, let the lift operate at rated speed and then check the following parameters:

- Motor current of the lift: assess and compare it with the profile of the lift;

- Cabin velocity: assess according to Section 10.7.1 of TCVN 6395:2008;

- Cabin safety gear (applied to instantaneous safety gear and instantaneous safety gear with buffered effect): tested at the testing speed, test methods and assessment carried out under Section 4.2.3.1.2 of TCVN 6904: 2001;

The result is considered satisfactory if the lift operates as designed and requirements set forth in Section 8.3.1 are satisfied.

8.3.2. In-motion loading test wherein the lift carries 125% of rated load:

...

...

...

- Electromagnetic brake: test methods and assessment carried out under Article 4.2.1- of TCVN 6904-2001;

- Overspeed governor: test methods and assessment carried out under Article 4.2.2 of TCVN 6904-2001;

- Cabin safety gear: tested at the speed which is below the rated speed (applied to progressive safety gear): test methods and assessment carried out under Section 4.2.3.1.2 of TCVN 6904: 2001;

- Pull: test methods and assessment carried out under Article 4.2.4 of TCVN 6904-2001;

The result is considered satisfactory if the lift operates as designed without signs of errors and requirements set forth in Section 8.3.2 are satisfied.

8.3.3. Measure the floor-landing deviation: carry out an assessment according to Section 8.7 of TCVN 6395:2008.

8.3.4. Inspect overload protection equipment: carry out the inspection and assessment according to Section 11.8.6 of TCVN 6395-2008.

8.3.5. Test the counterweight safety gear (if any): test methods and assessment carried out under Article 4.2.3.2.2 of TCVN 6904-2001.

8.3.6. Test automatic rescue device (if any): test and assess according to Section 4.2.6 of TCVN 6904:2001.

...

...

...

8.3.8. Test special operating modes of the lift (if any).

- Operating mode of the lift in case of fire or earthquake;

- Prioritized operating mode.

9. INSPECTION RESULTS PROCESSING

9.1. Prepare an inspection record which contains sufficient information according to the form in the Appendix 02 hereto attached.

9.2. Approve the inspection record:

Mandatory participants in the process of approving the inspection record:

- The representative or a person authorized by the lift owner;

- A witness;

...

...

...

When the record is approved, the inspectors, the witness, and the representative or a person authorized by the lift owner shall append their signatures and seals (if any) on the record. The record shall be made into 02 copies, one for each party.

9.3. Write the brief inspection result to the profile of the electric lift (including full names of inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the inspection result of a lift is satisfactory, inspectors shall put an inspection stamp on it at a noticeable position.

9.5. Issuance of certificate of inspection results:

9.5.1. If the inspection result is satisfactory, the inspecting organization shall issue the certificate of inspection results to the lift within 5 working days from the date on which the inspection record is approved.

9.5.2. If the inspection result is not satisfactory, only the steps in 9.1 and 9.2 shall be taken and the inspection record must specify the explanation for unsatisfactory result, necessary remedial actions and a deadline for taking such actions. The inspection shall be sent to the employment authority of the area where the lift is located.

10. INSPECTION INTERVAL

10.1. An electric lift has to be inspected every 03 years. For the electric lift that has been used for more than 10 years, it has to be inspected every 02 years. For the electric lift that has been used for more than 20 years, it has to be inspected every year.

10.2. In the case where a shorter interval is demanded by the manufacturer or owner, such interval shall apply.

...

...

...

10.4. If the inspection interval is specified in national technical regulations, such regulations shall apply.

APPENDIX 01

SPECIMEN OF THE ON-SITE RECORD

 (Name of inspecting organization)
-------

THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
---------------

………..[place], ………[date]

...

...

...

No.:…………

(written by the inspector)

1- General information

Name of the lift:………………………………………………………………………………….

Name of the owner:....................................................................

Address (head office of the owner):……………………………………………………

Address (location) of the lift:……………………………………………………………………

Content of the meeting with the owner:

- Representative: (information)

...

...

...

2- Basic parameters:

Code:........................................ 

Manufacturing year: ........................................

Rated speed: ........................................

Number of stops: ........................................

Number of fabrication: ........................................

Rated load:

Manufacturer: .....................................

...

...

...

3- Document inspection:

- - Machine profile: ……………………………………………………………….

- Technical documents: ……………………………………………………………….

4- Code of measurement equipment:

5- External inspection:

- Insulation resistance:

- Machine room:

- Motor parameters:

Capacity: ..................................

...

...

...

Rated current: ........................................

Code:......................................... 

Serial number:.....................................

Voltage: .....................................

Manufacturer: .....................................

Rotational speed: .....................................

- Inspection of traveling cable - counterweight:

- Inspection of pulley:

...

...

...

- Pit:

- Distance from the pit bottom to the top of fully compressed buffer:

- Distance from the bottom of counterweight to the top of fully compressed buffer:

- Distance from the pit bottom to the lowest part of cabin bottom:

- Distance from the cabin roof to the lowest part of well ceiling:

- Distance between the floor sill and the cabin door sill:

- Distance from counterweight to cabin:

7- Technical inspection:

- No-load testing:

...

...

...

                          + Speed:

                          + Maximum floor-landing deviation:

- Testing at 125% load: + Electromagnetic brake:

                          + Cabin safety gear:

                          + Traction testing:

- Automatic rescue device testing:

- Overload protection equipment:

- Lift operating mode testing in case of fire or earthquake (if any):

8- Remedial actions: (if any)

...

...

...

WITNESS

INSPECTOR

APPENDIX 02

SPECIMEN OF THE SAFETY INSPECTION RECORD

 (Name of inspecting organization)
-------

THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
---------------

………..[place], ………[date]

...

...

...

SAFETY INSPECTION RECORD
(ELECTRIC LIFT)

No.: …………….
(According to on-site record No:……………….)

We are:

1. 1. ……………………………………..Inspector number:...................................................

2. 2.……………………………………..Inspector number:....................................................

Inspecting organization:.…………….……………………….…………….…………………….

Registration for certificate of the inspecting organization No:………………………………..

Name of the inspected lift:……………………….. ……………….. ……………………………

Name of the lift owner:…………………………………………………………..

...

...

...

Address (location) of the lift:……………………………………………………………………

Inspection procedures, applied standards: .........................................................................

Witness:……………………………………………………

1………………………………………                     Position: ………………………

2………………………………………                     Position: ……………………… 

I- PARAMETERS OF LIFT

Lift Class:

Manufacturing year: ........................................

Rated speed (m/ph): ........................................

...

...

...

Number of fabrication: ........................................

Rated load (kg): ........................................

Manufacturer: ........................................

Number of stops: ........................................

Uses: ........................................

II- FORMS OF INSPECTION

First time □ ;         Periodic □ ;         Unscheduled □

            Reasons for unscheduled inspection:.…………….……………………

III- INSPECTION CONTENT

...

...

...

- Remark: .…………….……………………….…………….……………………………………..

- Evaluation of inspection results:

No.

INSPECTION CONTENT

SATISFACTORY

UNSATISFACTORY

NOTE

1

Profile

...

...

...

2

Technical documents

2. EXTERNAL INSPECTION:

- Remark: .…………….……………………….…………….…………………………………….

...

...

...

Defects - deformation: …………………………..…………….……………………………….

- Evaluation of inspection results                   Satisfactory □                      Unsatisfactory □

3. TECHNICAL INSPECTION – NO-LOAD TEST:

- Remark: .…………….……………………….…………….…………………………………..

- Evaluation of inspection results:

No.

INSPECTION CONTENT

SATISFACTORY

UNSATISFACTORY

...

...

...

1

Well

2

Machine room

...

...

...

3

Motor

4

Speed reducer

...

...

...

5

Electromagnetic brake

6

Pulley

...

...

...

7

Overspeed governor

8

Counterweight travelling cable

...

...

...

9

Fixed points

10

Cabin

...

...

...

11

Counterweight

12

Buffer

...

...

...

13

Safety gear

14

Electricity system

...

...

...

15

Travel control equipment

16

Landing door - control of opening and closing operation of door

...

...

...

17

Distance between the pit bottom and the lowest part of cabin

18

Distance between the cabin roof and the lowest part of well ceiling

...

...

...

19

Distance between the floor sill and the cabin door sill:

4. TEST AT 100% OF RATED LOAD:

- Remark: .…………….……………………….…………….……………………………………..

- Evaluation of inspection results:

+ Cabin speed: ........................................

...

...

...

Unsatisfactory □

+ Motor current:

Result: Satisfactory □

Unsatisfactory □

+ Maximum floor-landing deviation:

Result: Satisfactory □

Unsatisfactory □

+ Instantaneous safety gear and instantaneous safety gear with buffered effect:

Result: Satisfactory □

...

...

...

5. IN-MOTION LOADING TEST WHEREIN THE LIFT CARRIES 125% OF RATED LOAD:

- Remark: .…………….……………………….…………….……………………………………..

- Evaluation of inspection results:

+ Electromagnetic brake

Result: Satisfactory □

Unsatisfactory □

+ Progressive safety gear

Result: Satisfactory □

Unsatisfactory □

...

...

...

Result: Satisfactory □

Unsatisfactory □

6. RESCUE SYSTEM TESTING:

- Remark: .…………….……………………….…………….……………………………………..

- Evaluation of inspection results:

+ Automatic rescue device (if any)

Result: Satisfactory □

Unsatisfactory □

+ Communication system (bell, internal telephone)

...

...

...

Unsatisfactory □

IV- CONCLUSIONS AND RECOMENDADTIONS

1. Result:  Satisfactory □ ;   Unsatisfactory □

Eligibility for operation with the maximum load:…………….(kg)

2. 2. Inspection stamp No:…………… At:……………

3. Remedial actions (if any): ………………………………………

Deadline for taking remedial actions: …………………………………….

V- INSPECTION INTERVAL

Date of next inspection: …………………………

...

...

...

The record is approved on: ………….………….

At: ……………………………………………………………………………...

The record is made into of ……copies, each party holds…. copies./.

OWNER
(Signature and full name)

WITNESS
(Signature and full name)

INSPECTOR
(Signature and full name)

PROCEDURES FOR INSPECTION OF PRESSURE VESSEL

...

...

...

Foreword

Procedures for inspection of safety of pressure vessel are drafted by the Department of Occupational Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of the Ministry of Labour, Invalids and Social Affairs.

PROCEDURES FOR INSPECTION OF PRESSURE VESSEL

1. SCOPE AND REGULATED ENTITIES

1.1. Scope

Such procedures shall be used for first, periodic and unscheduled inspection of safety of the pressure vessels with an operating pressure of more than 0.7 bar under QCVN 01- 2008/BLDTBXH and under administration of the Ministry of Labour, Invalids and Social Affairs.

Such procedures shall not apply to vessels used for storing and transporting compressed gases, liquefied petroleum gases, dissolved gases, vessels with the product of volume (in liters) and pressure (in bars) not exceeding 200 bar litres, and vessels with a volume of less than 25 liters.

1.2. Regulated entities

...

...

...

- Occupational safety inspectors.

2. REFERENCES

- QCVN 01:2008 - BLDTBXH - National technical regulation on safe work of steam boiler and pressure vessel;

- TCVN 8366:2010 - Pressure vessels - Requirement of design and manufacture;

- TCVN 6155:1996 - Pressure vessels - Safety engineering requirements of erection, use, repair;

- TCVN 6156:1996 - Pressure vessels - Safety engineering requirements of erection, use, repair, testing methods;

- TCVN 6008:2010 - Pressure equipment - Welds - Technical requirements and testing methods.

In the cases where national technical standards and regulations referred to in this document are amended or replaced, regulations of the latest documents shall apply.

Other standards may be applied to pressure vessel safety inspection at the request of its manufacturer or owner if such standards contain the same or higher safety criteria than those in the national standards referred to in this document.

...

...

...

In addition to terms in the above invoked and referenced documents, the following terms are used in description of this procedure:

3.1. “pressure vessel” is the equipment used for carrying out thermal or chemical processes, storing and transporting solvents with pressure greater than atmospheric pressure.

3.2. “first safety inspection” is inspection of safety of the vessel according to national technical standards and technical safety standards after its installation and before its first use.

3.3. “periodic safety inspection” is inspection of safety of the vessel according to national technical standards and technical safety standards after expiration of the last safety inspection result.

3.4. “unscheduled safety inspection” is inspection of safety of the vessel according to national technical standards and technical safety standards and will be carried out:

- after a repair or upgrade that affects the safety of the vessel;

- when the vessels that have been inoperative for 12 months or more are reused;

- after relocation of the vessel (for the fixed vessel);

- at the request of the owner or a competent authority.

...

...

...

Safety inspection shall be carried out in the following order:

- Inspection of the profile of the pressure vessel;

- External and internal inspection; 

- Technical inspection and testing;

- Operational inspection;

- Processing inspection results.

Note: Only take the next step if the previous step is passed. The result of each step shall be recorded according to the form provided in the Appendix 01 and retained by the inspecting organization.

5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations and law. Inspection equipment includes:

...

...

...

- Manometer, test meters;

- Endoscopic flaw detector;

- Geometric inspection equipment;

- Insulation resistance meter;

- Ground resistance tester;

- Thermometer (if necessary);

- Gas leak detector (if necessary);

- Clamp meter;

- Lead sealing plier;

...

...

...

- Nondestructive flaw detector (if necessary).

6. CONDITIONS FOR INSPECTION

The inspection must not be carried out unless the following conditions are met:

6.1. The pressure vessel is ready for inspection.

6.2. Documents about the vessel are adequate

6.3. The inspection is not affected by weather.

6.4. Occupational safety and occupational hygiene operation of the vessel are met.

7. PREPARATION FOR INSPECTION

Before carrying out inspection of a pressure vessel, the following tasks shall be performed:

...

...

...

7.1.1. Prepare the documents about the vessel.

7.1.2. Remove solvents, clean the inside and outside of the vessel.

7.1.3. Remove part or whole of the thermal insulation layer if the surface of metal is suspected of being damaged. Remove the access doors or cleaning door (if any). 7.1.4. Prepare equipment for inspection of all components of the vessel.

7.1.4. In case of difficulty in inspecting the underground vessel, lift the vessel if possible or take other appropriate measures for inspection.

7.1.5. In case of the vessel with electric heaters or moving parts, remove them from the vessel.

7.1.6. For the vessel containing toxic and flammable solvents, dispose them so that the inspector is not affected.

7.1.7. Mobilize human resources and prepare equipment for inspection; assign staff to participate in and witness the inspection.

7.2. Inspect the profile of the pressure vessel.

The documents to be inspected vary according to the inspection. To be specific:

...

...

...

7.2.1.1. The profile of a vessel (under QCVN: 01-2008 - BLDTBXH), which consists of the following documents:

- Criteria for metals used for the vessel and welding,

- Calculation of strength of load-bearing parts;

- Structural drawings which specify all main dimensions;

- Guidelines for operation and maintenance;

- Certificate of conformity issued by authorized organizations in accordance with regulations and law in case a competent authority has issued national technical regulations on the inspected entity.

7.2.1.2. Release documents.

- Certificates of the metals used for the vessel and welding;

- Weld inspection result;

...

...

...

7.2.1.3. Reports on calibration of measurement equipment; record on inspection of insulation resistance and protective devices (if any).

7.2.1.4. Documents on installation: Applied to the fixed vessel.

- Name of the manufacturer or owner;

- Characteristics of the additional materials used for installation;

- Welding data: welding technology, welding electrode code, name of the welder and welding-testing results;

- Records on inspection of each component of the vessel (if any).

7.2.2. Regarding periodic inspection:

7.2.2.1. The previous profile, inspection record and Certificate of inspection results.

7.2.2.2. Documents on the use, operation and maintenance of the vessel; inspection record (if any).

...

...

...

7.2.3.1. In case of repair, renovation and upgrade: Documents on design, repair, renovation and upgrade; commissioning record after repair, renovation and upgrade;

7.2.3.2. In case of relocation: Installation documents.

The result is considered satisfactory if:

- The profile of the pressure vessel is adequate and satisfies Article 2.4 of QCVN 01- 2008/BLDTBXH.

- If the inspection result is unsatisfactory, the owner shall take remedial actions according to Article 3.2.2 of QCVN 01-2008/BLDTBXH.

7.3. Prepare suitable and adequate equipment for inspection.

7.4. Develop measures for ensuring safety and reach an agreement with the owner before inspection.  Provide adequate personal protective equipment to ensure safety during the inspection.

8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

...

...

...

8.1.1. Inspect ground and position location of the pressure vessel.

8.1.2. Inspect operational lighting system.

8.1.3. Inspect working platform, stairs, hangers, etc.

8.1.4. Inspect electrical safety-grounding system and lightning protection system.

8.1.5. Check technical specifications specified on the label of the pressure vessel versus the profile of the vessel.

8.1.6. Inspect condition of the safety equipment, measuring equipment and auxiliary equipment in terms of quantity, types and technical specifications versus the design and prescribed standards.

8.1.7. Inspect valves on the pressure vessel in terms of quantity, types and technical specifications versus the design and prescribed standards.

8.1.8. Inspect condition of other auxiliary equipment in service of operations of the vessel.

8.1.9. Inspect condition of welds, and the metallic surface of load-bearing parts of the pressure vessel. In case of suspicion of damage, request the owner to carry out appropriate inspection.

...

...

...

8.1.11. Inspect joints.

The result is considered satisfactory if:

- the regulations specified in Section 3 of TCVN 6155:1996 are met;

- the regulations specified in Section 8 of TCVN 8366:2010 are met;

- there are no cracks, blisters, dents, excessive wear and tear, leaks of solvent of the load-bearing parts, welds and joints.

8.2. Internal inspection

8.2.1. Inspect the condition of metallic surface of load-bearing parts.

8.2.2. Inspect residues, rust, corrosion affecting the internal metallic surface of the pressure vessel.

8.2.3. Inspect condition of welds and metallic surface of the load-bearing parts. In case of suspicion of damage, request the owner to carry out appropriate inspection.

...

...

...

8.2.5. In case of shell-and-tube pressure vessel and suspicion of technical condition of the shell and tube, request the owner to remove part or whole of the shell and tube for inspection.

8.2.6. In case of failure to carry out internal inspection due to structural characteristics of the pressure vessel, replace the internal inspection with a hydrostatic test with the prescribed test pressure and inspection of the inspectable parts.

8.2.7. In case of detection of the flaws that reduce the strength of pressure wall (thin wall, eroded joints, etc.), the parameters of the pressure vessel shall be reduced by calculating the strength according to collected data.

The result is considered satisfactory if:

- the regulations specified in Section 3 of TCVN 8366: 2010 are met.

- there are no cracks, blisters, dents, excessive wear and tear, leaks of solvent of the load-bearing parts, welds and joints.

8.3. Technical inspection and test

8.3.1. The pressure vessel shall be exempted from strength test upon the first inspection if the duration of factory testing is within 18 months, the vessel is well maintained and shows no signs of impact and deformation after transport and installation. The inspection record shall clearly specify reasons and records on the manufacturer’s factory testing and record on installation commissioning (if any) shall be attached.

8.3.2. The vessel's chambers that operate at different pressure levels shall be separately tested.

...

...

...

8.3.4. Strength test.

The strength of the pressure vessel shall be tested for every 6 years at the maximum and the strength shall be tested in accordance with the following requirements (including the unscheduled inspection according to Section 3.12 of TCVN 6156:1996):

8.3.4.1. The test solvent is liquid (water, non-corrosive and non-toxic liquid), gas (inert gas, air). The temperature of the test solvent is below 50°C and not 5°C lower than ambient temperature.

8.3.4.2. The test pressure and time for maintaining test pressure are specified in Table 1 below.

Table 1: Test pressure and time for maintaining test pressure

Types of vessel

Working pressure (bar)

Test pressure (bar)

Maintenance time
(minute)

...

...

...

(Except for the cast vessels)

< 5

1.5P_lv but not less than 2 bar

5

≥ 5

1.25 P_lv but not less than P_lv + 3 bar

5

Vessels with a wall temperature of from 200°C to 400°C

Regardless of working pressure

...

...

...

5

Vessels with a wall temperature of above 400°C

Regardless of working pressure

Not less than 2 P_lv

5

Cast vessels

      Regardless of working pressure

1.5 P_lv but not less than than 3 bar

5

...

...

...

      Regardless of working pressure

Tested according to regulations of the manufacturer, but not less than P_lv.

5

P_lv - Working pressure.

8.3.4.3. Procedures for strength test:

8.3.4.3.1. Fill test solvent:  Fill the vessel with test solvent. (pay attention to the discharge of gas when tested with fluid)

8.3.4.3.2. Increase the pressure to test pressure (gradually increase it to avoid sudden expansion that damages the vessel, and do not hammer at the test pressure). Monitor and detect unusual signs during the test.

8.3.4.3.3. Maintain the test pressure as prescribed.

8.3.4.3.4. Gradually drop the pressure to the working pressure and maintain it throughout the inspection. Drop the pressure to (0); repair the damage (if any) and re-inspect.

...

...

...

8.3.4.4.1. The strength test with gas shall only be allowed to run if the external and internal inspection show good results and the strength shall be calculated and inspected according to the measurements obtained.

8.3.4.4.2. The following safety measures shall be taken when the strength test with gas is run:

- Valves and meters on the gas intake pipe must be removed from the place where the vessel is located or outside the booth where the vessel is located;

- Throughout the test, unauthorized persons must stay away from the vessel.

8.3.4.4.3. Test for gas leak by using soap solution or taking other measures. Do not hammer the vessel wall throughout the test.

The test result is considered satisfactory if:

- cracks are not found;

- gas bubbles, water spray or leak through welds and joints are not found;

- deformation is not found;

...

...

...

8.3.5. Leak test:

The leak test shall only be applied in case of technological requirements, the vessels containing toxic or flammable solvents or at the request of the manufacturer.

8.3.5.1. Pressure, solvent and maintenance time are specified in Table 2.

Table 2. Pressure, solvent and maintenance time for leak test

Types of vessel

Test pressure (bar)

Test solvents

Maintenance time (minute)

Vessel of all types

...

...

...

Air or inert gas

Maintained throughout the test but not less than 30 minutes

P_lv - Working pressure.

8.3.5.2. Fill the vessel with solvent and increase the pressure to test pressure.

8.3.5.3. Detect leak by using soap solution or taking other measures.

The test result is considered satisfactory if:

- gas leak is not detected;

- the allowable pressure drop during the maintenance of test pressure is less than or equal to 0.5% test pressure.

8.4. Operational inspection.

...

...

...

8.4.2. Inspect the operation of the vessel and its accessories; operation of protective devices and measurement equipment.

8.4.3. When the vessel operates stably, increase the pressure for inspection, adjust the working pressure of safety valves and seal the safety valves with lead (except for the vessel containing toxic or flammable solvents).

8.4.4. It is not required to adjust and seal the safety valve during the test.

8.4.5. Safety valve adjustment value: The installed pressure of a safety valve shall not exceed the following value:

- P_lv + 0.5 bar - When the working pressure reaches 3 bar.

- P_lv +15% P_lv - When the working pressure reaches from 3 bar to 60 bar.

- P_lv + 10% P_lv - When the working pressure reaches above 60 bar.

The result is considered satisfactory if the pressure vessel, auxiliary equipment and measurement equipment operate normally and the indicators are stable.

9. PROCESSING INSPECTION RESULTS

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...

...

9.2. Approve the inspection record:

Mandatory participants in the process of approving the inspection record:

- The representative or a person authorized by the vessel owner;

- A witness;

- The inspector.

When the record is approved, the inspectors, the witness, and the representative or a person authorized by the vessel owner shall append their signatures and seals (if any) on the record. The record shall be made into 02 copies, one for each party.

9.3. Write the brief inspection result to the profile of the pressure vessel (including full names of inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the inspection result of a pressure vessel is satisfactory, inspectors shall put an inspection stamp on it at a noticeable position.9.5. Issuance of certificate of inspection results:

9.5.1. If the inspection result is satisfactory, the inspecting organization shall issue the certificate of inspection results to the pressure vessel within 5 working days from the day on which the inspection record is approved.

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...

...

10. INSPECTION INTERVAL

10.1. A pressure vessel has to be inspected every 3 years. For the vessel that contains corrosive or inflammable solvents and vessel that has been used for more than 12 years, they have to be inspected every 02 years.

10.2. For the vessel that contains corrosive or inflammable solvents and has been used for more than 12 years, and vessel that has been used for more than 24 years, they have to be inspected every year.

10.3. In the case where a shorter interval is demanded by the manufacturer or owner, such interval shall apply.

10.4. If the inspection interval is shortened, the inspector shall provide explanation in the inspection record.

10.5. If the inspection interval is specified in national technical regulations, such regulations shall apply.

PROCEDURES FOR INSPECTION OF TECHNICAL SAFETY OF BRIDGE TYPE LIFTING EQUIPMENT (BRIDGE CRANES, GANTRY CRANES, SEMI-GANTRY CRANES AND ELECTRIC HOISTS)

QTKD:09- 2016/BLDTBXH

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...

...

Procedures for inspection of technical safety of bridge type lifting equipment are drafted by the Department of Work Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of the Ministry of Labour, Invalids and Social Affairs.

PROCEDURES FOR INSPECTION OF TECHNICAL SAFETY OF BRIDGE TYPE LIFTING EQUIPMENT

1. SCOPE AND REGULATED ENTITIES

1.1. Scope

Such procedures shall be used for first, periodic and unscheduled inspection of bridge type lifting equipment (including bridge cranes, gantry cranes, semi-gantry cranes and electric hoists) and under state management of the Ministry of Labour, Invalids and Social Affairs.

Such procedures shall not apply to bridge type lifting equipment placed on floating work platforms.

According to such procedures, organizations carrying out occupational safety inspection shall directly apply or establish specific and detailed procedures for each model and type of bridge type lifting equipment provided that those procedures are not contrary to those specified in this document.

1.2. Regulated entities

...

...

...

- Occupational safety inspectors.

2. Normative references

- QCVN 7: 2012/BLDTBXH, National technical regulation on safe work of lift appliances.

- QCVN 30: 2016/BLDTBXH, National technical regulation on safe work for overhead, gantry cranes;

- TCVN 4244:2005, Lifting appliances - Design construction and survey;

- TCVN 8242-1:2009 (ISO 4306-1:2007) Cranes - Vocabulary - Part 1: General;

- TCVN 10837:2015, Cranes - Wire ropes - Care and maintenance, inspection and discard;

- TCVN 5206:1990, Loading crane -  Safety requirements for counter - weight and ballast;

- TCVN 5207:1990, Loading crane - Safety requirements;

...

...

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- TCVN 5179:90, Hoisting cranes - Test requirements of hydraulic equipment for safety;

- TCVN 9358:2012, Installation of equipment earthing system for industrial projects - General requirements;

- TCVN 9385:2012, Protection of structures against lightning - Guide for design, inspection and maintenance;

In the cases where the abovementioned normative references are amended or replaced, regulations of the latest documents shall apply.

Other standards may be applied to bridge type lifting equipment inspection at the request of its user or manufacturer if such standards contain the same or higher safety criteria than those in the national standards referred to in this document.

3. TERMS AND DEFINITIONS

In addition to terms and definitions in the abovementioned normative references, the following terms and definitions are used in description of this procedure:

3.1. “bridge type lifting equipment” includes bridge cranes, gantry cranes, semi-gantry cranes and electric hoists.

3.2. “first safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards after its installation and before its first use.

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3.4. “unscheduled safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards and will be carried out:

- after a repair, upgrade or renovation that affects the safety of equipment;

- after change of the location of installation;

- at the request of the user or a competent authority.

4. INSPECTION STEPS

Safety inspection shall be carried out in the following order:

- Inspection of the equipment profile and documents;

- External inspection;

- Technical inspection - No-load test;

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- Inspection result processing.

Note: Only take the next step if the equipment passes the test in the previous step. The result of each step shall be documented according to the form in the Appendix 01 and retained by the inspecting organization.

5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations. Inspection equipment includes:

- Theodolite;

- Altimeter (speedometer);

- Distance measuring equipment;

- Geometric inspection equipment;

- Dynamometer or hanging scale;

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...

- Ground resistance tester;

- Multimeter;

- Clamp meter;

- Automatic level (if necessary).

6. CONDITIONS FOR INSPECTION

The inspection must not be carried out unless the following conditions are met:

6.1. The equipment is at the ready for inspection.

6.2. Documents about the equipment are adequate.

6.3. The inspection is not affected by environment or weather.

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7. PREPARATION FOR INSPECTION

7.1. Before carrying out the inspection, the inspecting organization and the user shall reach an agreement on an inspection plan and prepare for the inspection and assign staff to participate in and witness the inspection.

7.2. Inspect the equipment profile and documents. The following documents shall be inspected according to inspection regulations:

7.2.1. Regarding first inspection:

- The bridge type lifting equipment profile and documents. The following documents shall be considered:

+ Calculation of strength of load-bearing parts (if any);

+ Structural drawings which specify all main dimensions and specifications;

+ Operating principle diagram and main technical specifications of electric, hydraulic or pneumatic transmission system, and control devices and arrangement of safety devices;

+ Assembly drawings of lifting equipment, wiring diagram;

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- Release documents:

+Certificates of the metals used for the equipment and welding (according to 3.1.2 of TCVN 4244: 2005);

+ Welding joint inspection result (according to 3.3.4 of TCVN 4244: 2005);

+ Factory acceptance record.

- Reports on results and records on inspection of earthing, lightning protection, motor insulation resistance and protective devices (if any);

- Documents on installation;

- Certificate of conformity issued by authorized organizations in accordance with regulations.

7.2.2. Regarding periodic inspection:

- The previous profile, inspection record and certificate of inspection result;

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...

7.2.3. Regarding unscheduled inspection:

- In case of renovation or repair: documents on renovation or repair and commissioning record.

- In case of relocation: installation documents;

- The inspection record issued by competent authority (if any).

The document inspection result is satisfactory if the documents are adequate and the regulations of QCVN 7:2012/BLDTBXH are observed. If the result is unsatisfactory, the user shall take remedial actions.

7.3. Prepare suitable and adequate equipment for inspection.

7.4. Develop measures for ensuring safety and reach an agreement with the user before inspection. Provide adequate personal protective equipment to ensure safety during the inspection.

8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

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8.1.1. Check the location of installation of equipment, electrical system, user manual, protective fences, ground, distance and safety measures, notable obstacles during the inspection; conformity of the parts and specifications of the equipment with those specified in the profile and documents.

8.1.2. Check all mechanisms or parts of the lifting equipment individually, pay particular attention to the condition of the following parts:

- Metal structure of lifting equipment, welds, riveted joints (if any), bolted joints of metal structures, control rooms, ladders, floors and guards;

- Hooks and parts of hooks (Appendix 13A, 13B, 13C TCVN 4244: 2005);

- Ropes inspected and discarded according to TCVN 10837:2015;

- Rope fixing parts: meet the manufacturer's requirements or refer to Annex 18C, 21 TCVN 4244: 2005;

- Pulleys, shafts and parts used to fix the shaft sleeves (Appendix 19A, 20A, 20B TCVN 4244: 2005);

- Rails (Appendix 5 TCVN 4244 : 2005);

- Safety devices (hoisting limiter, lowering limiter; travelling and traversing limiter; anti-overload devices);

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- Brakes inspected according to 1.5.3.3 of TCVN 4244:2005.

The equipment passes the test if it is installed according to technical documentation, no damage or defect is found and the requirements in section 8.1 are met.

8.2. Technical inspection - No-load test:

- Conduct no-load tests of mechanisms and equipment, including all electrical mechanisms and equipment, safety devices, brakes, control and lighting devices, signals, sounds;

- Conduct the abovementioned tests at least 03 (three) times.

The equipment passes the test if its mechanisms and safety devices operate according to their specifications and design.

8.3. Loaded test - Test methods:

8.3.1. Static test:

- Conduct static test of bridge type lifting equipment according to 4.3.2- TCVN 4244: 2005.

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+ Qtk: design load;

+ Qsd: load required by the user (the load required by the user must be less than the design load and depend on the actual quality of the device).

The equipment passes the test if the load remains constant while it is being held for 10 (ten) minutes and after the load is lowered, the structures and parts of equipment have no crack, residual strain or other damage (according to 4.3.2-TCVN 4244-2005).

8.3.2. Dynamic test:

- Conduct dynamic test of bridge type lifting equipment depending on the type of equipment and according to 4.3.2- TCVN 4244: 2005.

- Test load is 110% of Qtk or 110% of Qsd. Hoist and lower the test load three times and check other mechanisms bearing such load.

The equipment passes the test if its of equipment operate as designed, requirements of applicable technical safety standard are met and no crack, residual strain or other damage is found.

8.3.3. For lifting equipment operating in special environment:

8.3.3.1. Regarding lifting equipment only used to hoist and lower load (lifting irrigation and hydropower sluice gates):

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- Conduct dynamic test with a load of 110% of the design load or load recommended by the user (according to 4.3.2- TCVN 4244: 2005) when the equipment and trolley are not moved. Hoist and lower the load three times and check hoisting and lowering mechanisms bearing such load.

The equipment passes the test if its mechanisms and parts of equipment operate as designed, requirements of applicable technical safety standard are met and no crack, residual strain or other damage is found.

8.3.3.2. When conducting static and dynamic tests of bridge cranes serving thermal power plants, hydropower plants and irrigation stations, specialized equipment may be used to create test load without using load (hydraulic cylinders and pistons are commonly used to create test load).

In this case, the equipment user or provider or installation service provider must establish a procedure for operating the equipment to create test load and such procedure must be confirmed by the parties concerned. All measuring, interlocking and safety devices of the equipment for creating test load shall be inspected in accordance with regulations.

- Conduct static test according to 8.3.1;

- Conduct dynamic test with a load of 110% of the design load or load recommended by the user at least 01 (one) full turn around the drum. Hoist and lower the load three times and check hoisting and lowering mechanisms bearing such load.

The equipment passes the test if its mechanisms and parts of equipment operate as designed, requirements of applicable technical safety standard are met and no crack, residual strain or other damage is found.

9. INSPECTION RESULT PROCESSING

9.1. Prepare an inspection record which contains sufficient information according to the form in the Appendix 02 enclosed herewith.

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Mandatory participants in the process of approving the inspection record:

- The representative of the user or a person authorized by the user;

- A witness;

- The inspectors.

When the record is approved, the inspector, the witness, and the representative of the user or a person authorized by the user shall append their signatures and seals (if any) on the record. The record shall be made into two (02) copies, each party shall keep 01.

9.3. Write the brief inspection result to the profile of the bridge type lifting equipment (including full names of the inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the equipment passes the test, the inspector shall put an inspection stamp on it at a noticeable position.

9.5. Issuance of certificate of inspection results:

9.5.1. If the equipment passes the test, the inspecting organization shall issue the certificate of inspection result to the lifting equipment within 05 working days from the date on which the inspection record is approved.

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10. INSPECTION INTERVAL

10.1. Bridge type lifting equipment has to be inspected every 03 years. For the type lifting equipment that has been used for more than 12 years, it has to be inspected every year.

10.2. In the case where a shorter interval is demanded by the manufacturer or user, such interval shall apply.

10.3. If the inspection interval is shortened, the inspector shall specify explanation in the inspection record.

10.4. If the inspection interval is specified in national technical regulations, such regulations shall apply.

Appendix 01

SPECIMEN OF THE ON-SITE RECORD
(INSPECTION OF TECHNICAL SAFETY OF BRIDGE TYPE LIFTING EQUIPMENT)

(Name of inspecting organization)
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...

………..[place], ………[date]

ON-SITE RECORD

No. ...................

(written by the inspector)

1- General information

Name of the equipment: .…………….……………………….…………….……………………………………….

Name of the user: .…………….……………………….…………….………………….

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...

Address (location) of the equipment: .…………….……………………….…………….…………………………….

Content of the meeting with the user:

- Representative: (information)

- Witnesses:

2. Basic specifications

- Code:........................................  

- Trolley speed:.................m/min

- Production number:....................................

- Equipment speed:.................m/min

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...

- Aperture, cantilever:................................m

- Manufacturer: ..................................         

- Lifting height of (main and auxiliary) hooks:............. m

- Design load:..................... tonnes           

- Load at cantilever’s free end: …………tonnes

- Lifting speed:.........................m/min       

3- Document inspection:

- Machine profile:

- Technical documents:

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...

...

5- Equipment inspection:

a. External inspection:

+ Metal structure:

+ Hook and pulley assembly:…

+ Wire ropes and wire rope fixation:…

+ Protective earthing:

+ Rails and rail fixation:

+ Brakes:….

+ Safety devices:

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- 125% load test:(10-minute hold)

+ Brakes: ……

+ Metal structure:….

-  110% dynamic test:

+ Brakes (load holding)

+ Mechanisms and parts:

+ Metal structure:

6- Inspection of limiters, load indicator, overload indicator.

7. Processing and evaluation of inspection results.

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WITNESS
(Signature and full name)

INSPECTOR
(Signature and full name)

Appendix 02

SPECIMENT OF RECORD ON INSPECTION OF TECHNICAL SAFETY OF BRIDGE TYPE LIFTING EQUIPMENT

 (Name of inspecting organization)
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THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
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TECHNICAL SAFETY INSPECTION RECORD
(FOR BRIDGE TYPE LIFTING EQUIPMENT)

No. …………….
(According to the On-site Record No. ………………..)

We are:

1. .…………….……………………… Inspector number: .…………….………………………

2. .…………….……………………… Inspector number: .…………….………………………

Inspecting organization: ………………………………………………………………….………

Registration certificate No. ……………………………………….…………….

Name of the inspected equipment:……………………………. ………………………………

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Address (head office of the user):…………………………………………………………… …

Address (location) of the equipment:……………………………………………………………

Inspection procedure and standards applied: …………………………………………………

Individuals witnessing and approving the record:………………………………… …………

1………………………………………                     Position:………………………

2………………………………………                     Position:……………………… 

I- BASIC SPECIFICATIONS OF EQUIPMENT

- Code:............................................  

- Trolley speed:......................m/min

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...

- Equipment speed:.................m/min

- Production year: ..............................           

- Aperture, cantilever:................................m

- Manufacturer: ..................................         

- Lifting height of (main and auxiliary) hooks:............. m

- Design load:........................... tonnes            

- Load at cantilever’s free end: …………tonnes

- Hoisting/Lowering speed:.........................m/min       

II- FORMS OF INSPECTION

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Reasons for unscheduled inspection: .…………….………………………………………

III- INSPECTION CONTENT:

A- Technical document inspection: 

- Comments:…………………………………………………………………….......................

- Result evaluation:

No.

Item

Passed

Failed

...

...

...

1

Profile

B-Technical inspection; no-load test:

- Comments:……………………………………………………………………………...

- Result evaluation:

No.

...

...

...

Passed

Failed

Note

No.

Mechanism; part

Passed

Failed

Note

...

...

...

Main hook/auxiliary hook

12

Main hoist mechanism

...

...

...

2

Pulley assembly

13

Auxiliary hoist mechanism

...

...

...

3

Main hoist rope

14

Trolley motion mechanism

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...

...

4

Auxiliary hoist rope

15

...

...

...

5

Main hoist brake

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...

...

Rail clip

6

Auxiliary hoist brake

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...

...

17

Whistle (bell)

7

Trolley brake

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18

Height limiter

8

Rail, rail gauge

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19

Trolley traversing limiter

9

Metal structure of main girders; attachments to the building

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20

Electrical system

10

...

...

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21

Control system

...

...

...

Crane brake

22

Crane travelling limiter

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...

C-Load test: (design/uses)

- Comments:……………………………………………………………………………..............

- Result evaluation:

No.

Load holding position and test result

Passed

Failed

Equivalent load (tonnes)

Static test (tonnes)

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...

...

1

Mid-aperture

2

At cantilever’s free end

...

...

...

3

Stability

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...

...

No.

Result evaluation

Passed

Failed

Note

No.

...

...

...

Passed

Failed

Note

1

Metal structure

...

...

...

Hoist brake

2

Control system

...

...

...

6

Trolley brake

3

Anti-overload device

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7

Crane brake

4

Hoist rope

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...

IV- CONCLUSIONS AND RECOMMENDATIONS

1. Result:  Passed □   Failed □

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2. Inspection stamp No:…………… At:……………

3. Recommendations: ……..……..……..……..……..……..……..……..

Deadline for implementation of recommendations:…….. ……..

V- INSPECTION INTERVAL

Date of next inspection:

Reasons for shortened interval (if any):

The record is approved on:

At:…………………………….

The record is made into of ……copies, each party holds…. copies.

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EQUIPMENT USER
(Signature and seal)
(Undertaking to fulfill recommendations in sufficient and timely manner)

PROCEDURES FOR TECHNICAL INSPECTION OF SAFETY OF MOBILE CRANES

QTKD: 10- 2016/BLDTBXH

Foreword

Procedures for inspection of technical safety of mobile cranes are drafted by the Department of Work Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of the Ministry of Labour, Invalids and Social Affairs.

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1. SCOPE AND REGULATED ENTITIES

1.1. cope

Such procedures shall be used for first, periodic and unscheduled inspection of mobile cranes under state management of the Ministry of Labour, Invalids and Social Affairs.

Such procedures shall not apply to the abovementioned mobile cranes placed on floating work platforms.

1.2. Regulated entities

- Organizations carrying out occupational safety inspection;

- Occupational safety inspectors.

2. NORMATIVE REFERENCES

- QCVN 7: 2012/BLDTBXH, National technical regulation on safe work of lift appliances;

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- TCVN 8590-2:2010 (ISO 4301-2:2009), Part 2: Mobile cranes.

- TCVN 8242-2:2009, Cranes - Vocabulary - Part 2, Mobile cranes;

- TCVN 10837:2015, Cranes - Wire ropes - Care and maintenance, inspection and discard;

- TCVN 8855-2:2011. Cranes and lifting appliances. Selection of wire ropes. Part 2: Mobile cranes. Coefficient of utilization;

- TCVN 4244:2005, Lifting appliances – Design construction and survey;

- TCVN 5206:1990, Loading crane -  Safety requirements for counter - weight and ballast;

- TCVN 4755:1989, Crane. Safety requirements for hydraulic equipment;

- TCVN 5179:1990, Hoisting cranes - Test requirements of hydraulic equipment for safety.

In the cases where the abovementioned normative references are amended or replaced, regulations of the latest references shall apply.

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3. TERMS AND DEFINITIONS

For the purposes of this document, the terms and definitions given in the abovementioned normative references and the following shall apply:

3.1. “mobile crane” means a boom type crane, which may be fitted with a mast (tower attachment) capable of travelling, laden or unladen, without the need for fixed runways and which relies on gravity for stability.

3.2. “first safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards after its installation and before its first use.

3.3. “periodic safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards after expiration of the last safety inspection result.

3.4. “unscheduled safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards and will be carried out:

- after a repair, upgrade or renovation that affects the safety of equipment;

- after change of the location of installation;

- at the request of the user or a competent authority.

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Safety inspection shall be carried out in the following order:

- Inspection of the equipment profile and documents;

- External inspection;

- Technical inspection - No-load test;

- Load test - Test methods;

- Inspection result processing.

Note: Only take the next step if the equipment passes the test in the previous step. The result of each step shall be documented according to the form in the Appendix 01 and retained by the inspecting organization.

5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations. Inspection equipment includes:

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- Altimeter (speedometer);

- Distance measuring equipment;

- Geometric inspection equipment;

- Dynamometer or hanging scale;

- Ground resistance meter;

-  Multimeter;

- Clamp meter;

- Automatic level (if necessary).

6. CONDITIONS FOR INSPECTION

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6.1. The equipment is at the ready for inspection.

6.2. Documents about the equipment are adequate.

6.3. The inspection is not affected by environment or weather.

6.4. Requirements concerning occupational safety and health are met.

7. PREPARATION FOR INSPECTION

7.1. Before carrying out the inspection, the inspecting organization and the user shall reach an agreement on an inspection plan and prepare for the inspection and assign staff to participate in and witness the inspection.

7.2. Inspect the equipment profile and documents. The following documents shall be inspected according to inspection regulations:

7.2.1. Regarding first inspection:

- The profile and technical documents on the equipment (inspected under 3.1 of QCVN 29:2016/BLDTBXH and 3.5.1.5 of QCVN 7: 2012/BLDTBXH).

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7.2.2. Regarding periodic inspection:

- The profile and technical documents on the equipment

- Documents on the use, operation and maintenance of the equipment, results of previous inspections.

7.2.3. Regarding unscheduled inspection:

- Profile and technical documents on the equipment (in case of renovation or repair, documents on renovation, documents on renovation or repair and commissioning records are required).

- Documents on the use, operation and maintenance of the equipment, results of previous inspections.

- Results of inspections and tests and implementation of recommendations.

The document inspection result is satisfactory if the documents are adequate and the regulations in 7.2 are observed. If the result is unsatisfactory, the user shall take remedial actions.

7.3. Prepare suitable and adequate equipment for inspection.

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8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

8.1. External inspection:

8.1.1. Check the location of the equipment, protective fences, distance and notable obstacles during the inspection.

8.1.2. Check the conformity of parts of the equipment with those specified in the documents/profile.

8.1.3. Check all mechanisms or parts of the lifting equipment individually, pay particular attention to the condition of the following parts:

- Metal structure of the lifting equipment: important load-bearing welds, riveted joints (if any), bolted joints between turntable and base frame (according to Appendix 6 of TCVN 4244:2005), control cabin.

- Hooks and parts of hook assembly (inspected and assessed according to Appendix 13A, 13B, 13C of TCVN 4244: 2005).

- Ropes inspected and discarded according to  TCVN 10837:2015;

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- Pulleys, shafts and parts used to fix the shaft sleeves (Appendices 19A, 20A and 20B of TCVN 4244: 2005).

- Safety devices (overload limiter; hoisting limiter, lowering limiter; derricking device, telescoping limiter);

- Brake mechanisms.

- Counter-weight and counter-weight frames: assessed according to TCVN 5206:1990.

The equipment passes the test if no damage or defect affecting its mechanisms and parts is found and the requirements in section 8.1 are met.

8.2. Technical inspection - No-load test:

8.2.1. Conduct no-load tests of mechanisms and systems (according to 4.3.2 of TCVN 4244-2005), including:

- Hook and boom hoisting and lowering mechanisms, slewing mechanism, equipment travelling mechanism (in the case of a crawler crane).

- Safety devices: hook hoisting and lowering limiter, boom hoisting and lowering limiter, overload limiter (if any), radius indicator and corresponding load.

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- Control and lighting devices, signals, sounds.

- Conduct the abovementioned tests at least 03 times.

The equipment passes the test if its mechanisms and safety devices operate according to their specifications and design and satisfy the regulations set out in 8.2.

8.3. Load test - Test methods:

8.3.1. Static test:

- Test load: at 125% of SWL or 125% of Q(sd), where:

+ SWL: safe working load of the equipment;

+ Q(sd): the load required by the user must not be greater than the design load and depend on the actual quality of the equipment.

- When hoisting the load, check the function of the overload limiter at these positions. The overload limiter must prevent mechanisms from continuing to operate beyond the equipment's safe limits and such mechanisms are only permitted to operate in the opposite direction to bring the load back to a safe level.

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The equipment passes the test if, during the 10 minute load test period, there is no crack, permanent deformation or other damage and the regulations set out in 4.3.2 of TCVN 4244:2005 are satisfied.

8.3.2. Dynamic test:

- Test load: at 110% of SWL or 110% of Q(sd).

- Hold the load at two positions at the minimum and maximum radius based on the characteristics of the equipment’s load and comply with the regulations enshrined in 4.3.2 and 4.3.3 of TCVN 4244:2005.

The equipment passes the test if the load remains constant during the test period and no crack, permanent deformation or other damage are present on its mechanisms and parts after the load is lowered, and the regulations set out in 4.3.2 and 4.3.3 of TCVN 4244-2005 are satisfied.

9.1. Prepare an inspection record which contains sufficient information according to the form in the Appendix 02 enclosed herewith.

9.2. Approve the inspection record:

Mandatory participants in the process of approving the inspection record:

- The representative of the user or a person authorized by the user;

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- The inspectors.

When the record is approved, the inspectors, the witness, and the representative of the user or a person authorized by the user shall append their signatures and seals (if any) on the record. The record shall be made into two (02) copies, each party shall keep 01.

9.3. Write the brief inspection result to the profile of the equipment (including full names of the inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the equipment passes the test, the inspector shall put an inspection stamp on it at a noticeable position.

9.5. Issuance of certificate of inspection result:

9.5.1. If the equipment passes the test, the inspecting organization shall issue the certificate of inspection result to the equipment within 05 working days from the date on which the inspection record is approved.

9.5.2. If the equipment fails the test, only the steps in 9.1 and 9.2 shall be taken and the inspection record must specify the explanation for failed result, necessary remedial actions and a deadline for taking such actions. The inspection record shall be sent to the employment authority of the area where the equipment is installed and located.

10. INSPECTION INTERVAL

10.1. A mobile crane has to be inspected every 02 years. For the mobile crane that has been used for more than 10 years, it has to be inspected every year.

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10.3. If the inspection interval is shortened, the inspector shall specify explanation in the inspection record.

10.4. If the inspection interval is specified in national technical regulations, such regulations shall apply.

Appendix 01

SPECIMEN OF THE ON-SITE RECORD
(FOR MOBILE CRANES)

(Name of inspecting organization)
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THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
---------------

………….. [place], ………[date]

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...

ON-SITE RECORD

(written by the inspector)

1- General information

Name of the equipment: .…………….……………………….…………….……………………………………….

Name of the user: .…………….……………………….…………….………………….

Address (head office of the user): .…………….……………………….…………….…………

Address (location) of the equipment: .…………….……………………….…………….…………………………….

Content of the meeting with the user:

- Representative: (information)

...

...

...

2- Basic specifications

- Code:       

………………

- Slewing speed:

……

rpm

- Production number: 

………………

- Crane travel speed (for mobile equipment):

...

...

...

m/min

- Production year:         

………………

- Radius (max):

……

m

- Manufacturer:         

………………

- Lifting height of (main and auxiliary) hooks:

...

...

...

m

- Design load(max)

…………tonnes

- Load at the maximum radius:

……

tonnes

- Lifting speed:

…………m/min

- Uses:

...

...

...

3- Document inspection:

- Machine profile:

- Technical documents:

4- Code of measuring and testing equipment:

5- Equipment inspection:

a. External inspection:

- Metal structure

- Hook and pulley assembly:…

- Wire ropes and wire rope fixation:…

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...

...

- Brakes:….

- Counterweight:….

- Safety devices:

b. Technical inspection:

- 125% load test:(10-minute hold)

- Brakes: ……

- Metal structure:….

- 110% dynamic test:

- Brakes (load holding)

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- Metal structure:

6- Inspection of limiters, load indicator, overload indicator.

7. Processing and evaluation of inspection results.

8- Recommendations: (if any).

WITNESS
(Signature and full name)

INSPECTOR
(Signature and full name)

Appendix 02

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 (Name of inspecting organization)
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THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
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………….. [place], ………[date]

TECHNICAL SAFETY INSPECTION RECORD
(FOR MOBILE CRANES)

No. …………….

We are:

1. .…………….……………………… Inspector number: .…………….………………………

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Inspecting organization: .…………….…………………….…………….………………………

Registration certificate No. ……………………………………….……………

Name of the inspected equipment:……………………………. ………………………………

Name of the user: .…………….……………………….…………….………………….

Address (head office of the user): .…………….……………………….…………….………

Address (location) of the equipment: .…………….……………………….…………….……………………………. ……………

Inspection procedure and standards applied: …………………………………………………

Individuals witnessing and approving the record:………………….………………… ………

1…………………………………                     Position:………….…………………

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I- BASIC SPECIFICATIONS

- Code:       

………………

- Slewing speed:

……

rpm

- Production number:  

………………

- Crane travel speed (for mobile equipment):

...

...

...

……

m/min

- Production year:         

………………

- Actual/design radius:

……

m

- Manufacturer:         

………………

...

...

...

……

m

- Design load(max)

…………tonnes

- Load at the maximum actual/design radius:

……

tonnes

- Lifting speed:

…………m/min

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...

……………

II- FORMS OF INSPECTION

First time □ ;            Periodic □ ;            Unscheduled □

III- INSPECTION CONTENT

A. Document inspection: 

No.

Item

Passed

Failed

...

...

...

No.

Item

1

Profile

...

...

...

License plate

………..

B. External inspection; no-load test:

No.

Mechanisms; parts

Passed

Failed

Note

...

...

...

Mechanisms; parts

Passed

Failed

Note

1

Main hook/auxiliary hook

...

...

...

15

Auxiliary hoisting mechanism

2

Pulley assembly

...

...

...

16

Boom hoisting mechanism

3

Main hoist rope

...

...

...

17

 Telescoping mechanism

4

Auxiliary hoist rope

...

...

...

18

Leg (Chain)

5

...

...

...

19

Whistle/bell

...

...

...

Boom hoist rope

20

Metal structure, boom

...

...

...

7

Main hoisting mechanism

21

Crane frame

...

...

...

8

Wind speed meter

22

Auxiliary hoist brake

...

...

...

9

Height limiter

23

...

...

...

10

Boom angle limiter

...

...

...

Radius and corresponding load indicator

11

Counterweight

...

...

...

25

Control system

12

Travel mechanism

...

...

...

26

Hydraulic system

13

Main hoist brake

...

...

...

27

Slewing mechanism

14

Travel brake

...

...

...

28

Slewing mechanism brake

C-Load test:

...

...

...

Load holding position and test result

Passed

Failed

Radius (m)

Corresponding load
(tonnes)

Static test load
(tonnes)

Dynamic test load
(tonnes)

1

...

...

...

R=

2

Maximum radius

...

...

...

R=

3

Auxiliary boom

...

...

...

4

Main boom length

...

...

...

5

Stability

...

...

...

Result evaluation

Passed

Failed

Note

No.

Result evaluation

Passed

Failed

...

...

...

1

Metal structure

6

Slewing mechanism brake

...

...

...

2

Load hoist brake

7

Travel brake

...

...

...

3

Boom hoist brake

8

...

...

...

4

Overload limiter (if any)

...

...

...

Hydraulic system

5

Load hoist rope

...

...

...

10

Control system

IV - CONCLUSIONS AND RECOMMENDATIONS

1. Result: Passed  □     Failed   □

2. Inspection stamp No:…………… At:……………

3. Maximum load: ........... tonnes, corresponding to radius:…. m.

...

...

...

Deadline for implementation of recommendations:……..

V - INSPECTION INTERVAL

Date of next inspection:

Reasons for shortened interval (if any):

The record is approved on:

At:.…………….……………………….…………….……

The record is made into of ……copies, each party holds…. copies./.

We, the inspectors who inspect the equipment are responsible for the accuracy of the comments on and evaluation of the inspection results specified in this record./.   

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WITNESS
(signature and full name)

INSPECTOR
(signature and full name)

PROCEDURES FOR TECHNICAL INSPECTION OF SAFETY OF LIFTING TABLES

QTKD: 11- 2016/BLDTBXH

Foreword

Procedures for inspection of technical safety of lifting tables are drafted by the Department of Work Safety and promulgated together with the Circular No. 54/2016/TT-BLDTBXH dated December 28, 2016 of the Ministry of Labour, Invalids and Social Affairs.

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1. SCOPE AND REGULATED ENTITIES

1.1. Scope

Such procedures shall be used for first, periodic and unscheduled inspection of lifting tables (including: lifting tables, lifting platforms and lifting bridges used to lift goods) under state management of the Ministry of Labour, Invalids and Social Affairs.

Such procedures shall not apply to the lifting tables placed on floating work platforms.

1.2. Regulated entities

- Organizations carrying out occupational safety inspection;

- Occupational safety inspectors.

2. NORMATIVE REFERENCES

- TCVN 4244:2005, Lifting appliances - Design, construction and survey.

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- TCVN 4755:1989, Cranes - Safety requirements for hydraulic equipment.

- TCVN 5179:90, Hoisting cranes - Test requirements of hydraulic equipment for safety.

- TCVN 9358 : 2012 Installation of equipment earthing system for industrial projects - General requirements.

- QCVN 22:2010/BGTVT,  National technical regulation on construction and survey of lifting appliances;

- BSEN 1570:1998+A2: 2009 - Safe requirements for lifting table.

In the cases where the abovementioned normative references are amended or replaced, regulations of the latest references shall apply.

Other standards may be applied to lifting tables at the request of their user or manufacturer if such standards contain the same or higher safety criteria than those in the national standards referred to in this document.

3. TERMS AND DEFINITIONS

For the purposes of this document, the terms and definitions given in the abovementioned normative references and the following shall apply:

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3.2. “first safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards after its installation and before its first use.

3.3. “periodic safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards after expiration of the last safety inspection result.

3.4. “unscheduled safety inspection” means the inspection of technical safety of equipment according to national technical standards and technical safety standards and will be carried out:

- after a repair, upgrade or renovation that affects the safety of equipment;

- after change of the location of installation;

- at the request of the user or a competent authority.

4. INSPECTION STEPS

Safety inspection shall be carried out in the following order:

- Inspection of the equipment profile/documents;

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...

- Technical inspection - No-load test;

- Load test - Test methods;

- Inspection result processing.

Note: Only take the next step if the equipment passes the test in the previous step. The result of each step shall be documented according to the form in the Appendix 01 and retained by the inspecting organization.

5. INSPECTION EQUIPMENT

Inspection equipment shall be inspected and calibrated in accordance with regulations. Inspection equipment includes:

- Theodolite (if necessary);

- Automatic level;

- Altimeter (speedometer);

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...

...

- Geometric inspection equipment;

- Dynamometer or hanging scale;

- Insulation resistance meter;

- Ground resistance meter;

- Multimeter;

- Clamp meter;

6. CONDITIONS FOR INSPECTION

The inspection must not be carried out unless the following conditions are met:

6.1. The equipment is at the ready for inspection.

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6.3. The inspection is not affected by environment or weather.

6.4. Requirements concerning occupational safety and health are met.

7. PREPARATION FOR INSPECTION

7.1. Before carrying out the inspection, the inspecting organization and the user shall reach an agreement on an inspection plan and prepare for the inspection and assign staff to participate in and witness the inspection.

7.2. Inspect the equipment profile and documents. The following documents shall be inspected according to inspection regulations:

7.2.1. Regarding first inspection:

- The profile of a lifting table must specify the type and code; production number; production year; manufacturer; drive type; control type; lifting speed; travel speed (if any) and main technical characteristics of parts;

+ Drawings specifying main dimensions;

+ Transmission principle diagram;

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...

...

+ Factory acceptance test results (if any).

- Reports on results of and records on inspection of insulation grounding and resistance of the motor.

- Certificate of conformity issued by the designated organization as prescribed.

7.2.2. Regarding periodic inspection:

- The previous profile, inspection record and inspection result report;

- Documents on the use, operation and maintenance of the equipment; inspection record (if any).

7.2.3. Regarding unscheduled inspection:

- In case of renovation or repair: documents on renovation or repair and commissioning record;

- In case of relocation: installation documents;

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The document inspection result is satisfactory if the documents are adequate and the regulations in 7.2 are observed. If the result is unsatisfactory, the user shall take remedial actions.

7.3. Prepare suitable and adequate equipment for inspection.

7.4. Develop measures for ensuring safety and reach an agreement with the user before inspection. Provide adequate personal protective equipment to ensure safety during the inspection.

8. INSPECTION PROCESS

An inspection shall be carried out in the following order:

8.1. External inspection:

8.1.1. Check the installation location of equipment, electrical system, instruction manual, protective fences, ground, distance and safety measures, notable obstacles during inspection.

8.1.2. Check the conformity of parts and technical specifications of the equipment with those specified in the documents/profile.

8.1.3. Check all mechanisms or parts of the lifting equipment individually, pay particular attention to the condition of the following parts:

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...

- Welds, riveted joints (if any), bolted joints of the connection structure.

- Rope fixing parts (meeting the manufacturer's requirements or referring to Appendices 18C and 21 of TCVN 4244: 2005).

- Pulleys, shafts and fixing parts (Appendices 19A, 20A and 20B of TCVN 4244: 2005).

- Check the results of measurement of grounding resistance and insulation resistance.

- Hydraulic system:

+ Check the technical condition of the hydraulic cylinder: no deformation, no hydraulic oil leak.

+ Check the technical condition of the hydraulic oil pipeline system and connectors: not flattened, cracked, leak-proof and firmly fixed.

- Check the control system: location of installation, priority, homogeneity between mechanism and control mode.

- Safety devices: Safety valve, relief valve, lifting and lowering limiter, overload limiter, mechanical braking mechanism, etc.

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The equipment passes the test if it is installed according to the technical documents, no damage or defect is found and the requirements in section 8.1 are met.

8.2. Technical inspection - No-load test:

Let the equipment to operate without load and check the operation of systems and structures:

- Check the operating status of the work platform hoisting and lowering mechanisms.

- Hydraulic system: inspected and assessed according to TCVN 5179:1990.

- Drive system and control system of the equipment.

- Brake system.

- Safety devices.

- Conduct the abovementioned tests at least 03 (three) times.

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8.3. Load test - Test methods:

8.3.1. Static test:

Only conduct a static test if the equipment fails the no-load test.

- Test load: 125% of SWL (the safe working load must not be greater than the design load)

- The platform height during load test: ≤ 200 mm from the lowest lowering position of the work platform (in the position where the mechanical braking mechanism has not yet acted).

- Arrange a load test on the platform surface:

+ Stacking load is evenly distributed over the actual working surface area of the platform.

+ For a lifting table designed to lift a specific type of load, the test load is arranged at the same positions as in the working process.

- Run the load test for 10 minutes

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8.3.2. Dynamic test:

- Test load: at 110% of SWL.

- Conduct the test throughout operation of the equipment.

- Conduct abovementioned test at least 03 times.

The equipment passes the static load test if its mechanisms and parts operate according to the design; its metal structure shows no crack or permanent deformation; the lifting platform does not drift; the equipment remains stable; shows no sign of oil leakage; shows no damage.

8.3.3. Other requirements:

- If the equipment has multiple hoisting mechanisms, the static and dynamic tests shall be carried out for each hoisting mechanism with the corresponding working load.

- If the equipment has a platform that can be tilted at an angle, conduct static and dynamic tests on the work platform tilting mechanism and the friction between the work platform and the working load shall be checked.

9. INSPECTION RESULT PROCESSING

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9.2. Approve the inspection record:

Mandatory participants in the process of approving the inspection record:

- The representative of the user or a person authorized by the user;

- A witness;

- The inspectors.

When the record is approved, the inspector, the witness, and the representative of the user or a person authorized by the user shall append their signatures and seals (if any) on the record. The record shall be made into two (02) copies, each party shall keep 01.

9.3. Write the brief inspection result to the profile of the lifting table (including full names of the inspectors and the date of inspection).

9.4. Put on the inspection stamp: if the lifting table passes the test, the inspector shall put an inspection stamp on it at a noticeable position.

9.5. Issuance of certificate of inspection results:

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9.5.2. If the lifting table fails the test, only the steps in 9.1 and 9.2 shall be taken and the inspection record must specify the explanation for failed result, necessary remedial actions and a deadline for taking such actions. The inspection record shall be sent to the employment authority of the area where the lifting table is installed and located.

10. INSPECTION INTERVAL

10.1. A lifting table has to be inspected at least every 02 years. For the lifting table that has been used for more than 10 years, it has to be inspected every year.

10.2. In the case where a shorter interval is demanded by the manufacturer or user, such interval shall apply.

10.3. If the inspection interval is shortened, the inspector shall specify explanation in the inspection record.

10.4. If the inspection interval is specified in national technical regulations, such regulations shall apply.

Appendix 01

SPECIMEN OF ON-SITE RECORD
(TECHNICAL INSPECTION OF SAFETY OF LIFTING TABLES)

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THE SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
---------------

………….. [place], ………[date]

ON-SITE RECORD

No. ...................

(written by the inspector)

1- General information

Name of the equipment: .…………….……………………….…………….……………………………………….

...

...

...

Address (head office of the user): .…………….……………………….…………….………………

Address (location) of the equipment: .…………….……………………….…………….…………………………….

Content of the meeting with the user:

- Representative: (information)

- Witness:

2. Basic specifications

- Code: .......................................  

- Design/actual lifting height: ……….... m

- Production number: ...................................

...

...

...

- Production year: ..............................          

- Dimension of lifting table: ………….….m

- Manufacturer: ...................................          

- Uses: ..............................................

- Design load:..................... tonnes           

3- Document inspection:

- Machine profile:

- Technical documents:

...

...

...

5- Equipment inspection:

a. External inspection:

+ Metal structure of lifting table and frame::..

+ Connection between frame and fixed base:..

+ Wire ropes and wire rope fixation, pulleys:…

+ Protective grounding:…

+ Hydraulic system:…

+ Rails, safety fences…

+ Travel mechanism:…

...

...

...

+ Safety devices, mechanical braking mechanism:…

b. Technical inspection:

- Load test at 125%: (10-minute hold)

 + Brakes: ……

+ Metal structure:….

-  Dynamic load test at 110%:

+ Brakes:…

+ Mechanisms and parts:

+ Metal structure:

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...

...

7. Processing and evaluation of inspection results.

8- Recommendations: (if any)

WITNESS
(Signature and full name)

INSPECTOR
(signature and full name)

Appendix 02

(SPECIMEN OF RECORD ON INSPECTION OF TECHNICAL SAFETY OF LIFTING TABLE)

 (Name of inspecting organization)
-------

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………….. [place], ………[date]

RECORD ON TECHNICAL INSPECTION OF SAFETY OF LIFTING TABLE

No. …………….
(According to the on-site record No. ………………..)

We are:

1. .…………….……………………… Inspector number: .…………….………………………

2. .…………….……………………… Inspector number: .…………….………………………

Inspecting organization: .…………….…………………….…………….………………………

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Name of the inspected equipment:……………………………. ………………………………

Name of the user: .…………….……………………….…………….………………….

Address (head office of the user): .…………….……………………….…………….…………

Address (location) of the equipment: .…………….……………………….…………….…………………………….

Inspection procedure and standards applied: …………………………………………………

Individuals witnessing and approving the record:………………….………………… ………

1………………………………………                     Position:………….…………………

2………………………………………                     Position:………….………………… 

I- BASIC SPECIFICATIONS

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...

...

- Design/actual lifting height: ……….... m

- Production number: ...................................

- Lifting speed: …………….…….. m/min

- Production year: ..............................          

- Dimension of lifting table: ………….….m

- Manufacturer: ...................................         

- Uses: ..............................................

- Design load:..................... tonnes           

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First time □ ;            Periodic □ ;            Unscheduled □

Reason for unscheduled inspection: .…………….………………………………………

III- INSPECTION CONTENT:

A-Technical document inspection: 

- Comments: ………………………………………………………………….......................

- Result evaluation:

No.

Item