DECISION

PROMULGATING STANDARDS FOR GRADES OF CONSTRUCTION ENGINEERS

THE MINISTER OF CONSTRUCTION

Pursuant to Decree No.15/CP dated March 04, 1994 of the Government on functions, duties, rights and organizational structure of the Ministry of Construction;

Pursuant to the record of acceptance of the result of the topic called Standards on grades of construction engineers provided by the standing council of ministerial science and technique in the meeting on October 05, 1996;

At the request of Directors of Department of Science and Technology and Department of Employment,

HEREBY DECIDES:

Article 1. This Decision is issued together with the Standards for grades of construction engineers – Construction Industry.

...

...

...

Article 3. Chief of the Ministry Office, Directors of Department of Employment, Department of Science and Technology, Department of Construction Policies and relevant entities shall take responsibility to disseminate and provide guidelines for implementation of these standards throughout the construction industry.

These standards come into force from the day on which they are signed.

PP. MINISTER OF CONSTRUCTION
DEPUTY MINISTER




Prof. Nguyen Manh Kiem

STANDARDS FOR GRADES OF CONSTRUCTION ENGINEERS

CONSTRUCTION INDUSTRY

INTRODUCTION

...

...

...

- These standards are considered a basis for writing the course book for training in professional skills and testing for raising the grade of construction engineers classified in relevant construction trades specified hereinafter.

- The standards are issued together Decision No.163/BXD-KHCN dated April 08, 1997 of the Ministry of Construction.

TABLE OF CONTENTS

No.

Job title

Grade (from-to)

I

Group of construction worker

...

...

...

Skilled bricklayer

2 ÷ 7

2

Carpenter (manual workers and machine operators)

2 ÷ 7

3

Concrete finisher

2 ÷ 5

4

...

...

...

2 ÷ 5

5

House painter

2 ÷ 5

II

Group of construction machine operator

1

Operator of combined construction machine

...

...

...

2

Tower crane operator

3 ÷ 6

3

Crane truck driver

3 ÷ 7

4

Soil processing machine operator (bulldozer, grader and scraper)

3 ÷ 7

...

...

...

Excavator operator

3 ÷ 7

6

Pile-driver operator

3 ÷ 7

III

Group of equipment installers

1

...

...

...

2 ÷ 7

2

Electrical equipment installer

2 ÷ 7

3

Petroleum pipe installer

2 ÷ 7

General requirements:

* Workers of all groups must acquire knowledge about occupational safety and health and grasp technical measures and perform all tasks satisfying specified technical requirements.

...

...

...

1. BRICKLAYER (Grade 2 to 7)

Grade 2/7

Knowledge and capability:

Knowledge:

- Methods for concrete proportioning and technical requirements for mixing and plastering

- Types of common bricks used in construction, difference between low and high-quality bricks for reasonable use

- Methods for performing the following basic activities: house foundation excavation, placing of cracked brick mortar or slaked lime, etc

Capability:

- Building brick wall of which thickness is at least 11 cm on available brick courses.

...

...

...

- Tiling the pathway with ordinary bricks, roof tiling by machinery under instructions, putting up scaffolding for one-storey houses and white-washing temporary houses.

Grade 3/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Different types and grades of mortar;

- Methods for building, plastering, tiling and decorating surface of all parts of the construction work;

- Erection and dismantlement of scaffolds

- Methods for working and placing a number of simply concrete building products such as simply-supported beam, lintel or canopy

- How to perform concrete work for simply building components.

...

...

...

- How to use and maintain materials meeting technical requirements.

- Technical regulations on occupational safety applied to masonry and general construction safety standards.

- How to read simple drawings and anticipation of workload.

- Capability:

- Establishing common structure shape rolling with bricks, making seam of lintels and building simple edges.

- Laying out brick courses for wall building, building foundation with freestone whose width is over 60 cm and installing firewood cookstove or coal-burning cookstove with chimney.

- Screeding the floor, plastering the wall, ceiling and simple moulding under ordinary technical and artistic requirements.

- Tiling roof and cementing decorative ridge.

- Installing ordinary doors.

...

...

...

- Laying cement tiles on available brick courses for ordinary rooms and houses without any sophisticated technique and art requirements.

- Blending paints.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings of ordinary houses and estimation of workload and workforce.

- Corner staking of one to two-storey houses and putting the spirit level in the accurate position for measuring purpose to laying the structure or building the house.

- How to manage and arrange a group of workers to build ordinary one to three-storey houses.

Capability:

...

...

...

- Covering walls and ceiling with cement-sand grout, scratch coating and plastering ordinary moulding.

- Laying granito over the stairs, pillars, walls or yards.

- Blending types of paints.

- Laying cement tiles with decorative patterns, enameled tiles coating with simple stone (not requiring complicated patterns).

- Tiling types of roofs.

- Installing ordinary bathroom equipment.

- Processing and joining building components of steel and joining formwork, pillars, floor of works not requiring high accuracy and sophisticated techniques.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

- How to read building drawings and how to well manage and arrange a group of workers for construction of houses requiring advanced technique for masonry meeting technical quality standards and reasonable and safe use of supplies.

- Corner staking according to the drawing for ordinary houses (not using theodolites)

- Bituminous waterproofing and other materials as technically required.

- Methods for handling and repairing common masonry-related damage (not relating to bearing structure)

Capability:

- Building walls, circular and square pillers with bricks not requiring ceiling plastering.

- Building chimney which height is not excess 25 m according to the construction drawing and laying (even processing) fire-resistant bricks on complicated building components.

- Installing sanitary equipment.

- Blending paints and laying granito with checked pattern or other decorations and granite in an accuracy manner.

...

...

...

- Completing house construction by putty technology, grind technology and rolling walls under models.

- Leveling, arranging patterns, forming a brick course for laying cement tiles and coating works requiring high techniques with stones or enamelled tiles.

- Working and covering pillars and wall surface with types of decorative bricks or stones and laying concave letters meeting technical and artistic requirements.

- Waterproofing the roof and bathroom areas and performing waterproofing meeting technical requirements.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings in terms of construction component and other relevant components such as water and electricity systems, discovery of common mistakes in the drawing and instruction given to lower-level construction workers to perform tasks specified in such drawing.

- How to modeling complicated masonry work.

...

...

...

- Laying types of high-class bricks or stones, plastering complicated moulding of special or art works.

- Preparing models, reliefs, decorations or prefabricating decorations to be placed on the construction work.

- Checking sizes and central points of complicated works for construction under designed drawings.

- Measuring and building chimneys of which height is above 25 m, building helical staircase, setting up piers and edges of specially and sophisticatedly-shaped works.

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge and capability:

- All tasks, technological procedures, quality assessment standards and technical regulations on occupational safety applied for masonry.

- How to read design drawings then working out methods for construction, management of a group of construction workers, construction of buildings (performance of masonry-related tasks and other tasks relating to carpentry, iron-making, concrete-finishing not requiring advanced techniques).

...

...

...

2. CARPENTER (manual workers and machine operators, from grade 2 to 7)

Grade 2/7

Knowledge and capability:

Knowledge:

- Names and useful purposes of a number of hand tools such as cross-cut saws, longitudinal-cut saws, planers, wood chisels, measurement tools and carpenter’s level. How to open and repair of saws for reasonable use.

- Names of a number of common woods and difference between good and rotten woods.

Capability:

- Cutting wood of which thickness is 10 cm, cross cutting wood biscuits in such a way that the wood pieces is flat and square as measured by the carpenter's level, chiseling certain simple wood biscuits and planning woods.

- Working a number of simple wooden furniture, joining formwork under the guidance of the leading carpenter.

...

...

...

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read simple wood drawings.

- Functions, useful purpose and maintenance of hand tools.

- Rules and processes for operation of machinery such as circular saws, spindle moulders and hand drilling machine.

- Methods for maintenance of woodworking tools and machines.

- Basic structure of wood biscuit.

- How to produce and form of timber framing, roofing frame, common formwork and falsework.

- Regulations on carpentry safety, general rules on construction safety, quality assessment standards applied for products manufactured.

...

...

...

Cross cutting, longitudinal cutting, shaving woods by hand tools and machines, equipment and materials meeting technical requirements.

- Making panel doors, simple glass doors without moulding.

- Manufacturing a number of household wooden furniture such as tables, chairs and simple filling cabinet for common use.

- Measuring the surface and setting up simple trusses (including purlins, rafters and tile batons).

- Working and setting up formwork and falsework by wood and using shaped formwork.

- Estimating workload assigned.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- How to classify woods based upon their species, mechanical-physical-chemical characteristics for reasonable use. Methods for drying and maintaining woods.

- Function of each wood bar in the load-bearing timber framing.

- How to maintain and repair mechanical components of the machine in case of breakdown.

Capability:

- Manufacturing panel doors with moulding, shutters, door frame, and arched door frame, revolving doors, hopper windows.

- Making artistic civil wooden furniture not requiring complicated carving.

- Working and setting up circular and square column form, beam system, canopy, seno, fountain requiring high accuracy.

- Selecting and using metal formwork for joining purpose suitable for each structure type.

- Manufacturing wooden tools such as hand grip and types of planers in an accuracy manner.

...

...

...

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read construction drawings and understanding tasks related to carpentry performed at construction site.

- Regulations on carpentry safety and occupational safety at construction site.

- Quality assessment standards applied for household wooden appliances and wooden formwork.

- Differences between quality, type and group of wood and impairments thereof for repair and reasonable use purpose.

- How to manage and arrange a group of carpenters for good performance of woodworking in medium-scale construction works.

Capability:

- Manufacturing doors requiring sophisticated techniques such as doors with arched frame

...

...

...

- Working and assembling wooden straight staircase and sophisticated helical staircase.

- Performing tasks relating to masonry, concrete-work and ironmaking corresponding to tasks of grade-3 carpenters (working in the line of bricklayer group)

- Making aluminium doors and cabinets and cutting and placing glass on the products manufactured.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to discover mistakes in drawings or during construction and rectification of such mistakes.

- Ideas for job innovation.

- Capacity of training lower-grade carpenters.

...

...

...

- Working and setting up formwork for works with sophisticated structure such as fountains, boilers or pedestal.

- Making sophisticated roofs with multiple grades, intersection lines or decorative patterns.

- Carving common patterns, animal and human shapes under the guidance of professional craftsmen.

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings of sophisticated works and estimation of woodworking workload in a quick and accuracy manner

- Methods for good construction and assurance of safety of woodworking for formwork, scaffold and installation of doors, ceiling or floors.

- Art for interior decoration of new works.

...

...

...

Capability:

- Making wooded products for display purpose.

- Carving flower and leaf shapes and restoring wooden components of cultural architecture works meeting technical and artistic requirements.

- Producing modern wooden models satisfying popular taste.

3. CONCRETE FINISHER (From grade 2 to 5)

Grade 2/5

Knowledge and capability:

Knowledge:

- How to use materials meeting specifications and procedures applied to each concrete type.

...

...

...

- How to maintain concrete during and after processing.

Capability:

- Mixing, pouring and vibrating concrete by hand (or by machine under the guidance) Laying concrete on foundation, base, floors, columns under measured dimension and technical specifications to satisfy safety requirements.

- Putting up and dismounting prefabricated concrete formwork.

Grade 3/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Functions and working principles of a number of common concrete mixers, table vibrators and rod vibrators.

- When to timely stop pouring concrete and pouring concrete meeting technical requirements.

...

...

...

- Quality assessment standards applied for concrete work.

- Technical regulations on concrete work safety and general construction safety regulations.

- Some technical requirements applied for relevant trades such as masonry, woodworking and ironmaking.

Capability:

- Pouring concrete on foundation and pedestal except for bolts, concrete gutters and fountains.

- Acquiring proficiency in use of concrete table vibrators and rod vibrators meeting quality requirements.

- Performing certain simple tasks of the following relevant trades:

+ For masonry: Wall building and plastering that are tasks of bricklayers.

+ For woodworking: Joining and dismounting formwork of a number of simple components.

...

...

...

Grade 4/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to use types of materials such as sand, stone, pebbles suitable for types of concrete under technical requirements.

- Grades of concrete, concrete content when mixing and concrete slump.

- How to read simple masonry and steelmaking drawings.

- Concrete drawings and tasks required.

Capability:

- Making concrete models as regulated.

...

...

...

- Discovering mistakes about formwork and reinforced steel.

Grade 5/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to operate a closed–loop concrete pouring according to concrete plant technology, transport and pouring concrete by dedicated vehicles meeting technique, quality and safety requirements.

Capability:

- Pouring concrete under the technology for smoothing non-plastered surface meeting technical and artistic requirements.

Performing certain tasks of relevant trades as follows:

+ For masonry: building and plastering common components not requiring advanced techniques.

...

...

...

+ For steelmaking: Understanding and performing tasks assigned to grade-3 workers (except for tasks relating to shape steel).

4. IRONWORKER (From grade 2 to 5)

Grade 2/5

Knowledge and capability:

Knowledge:

- Names and functions of steelmaking tools.

- How to use steel cutting machines.

- How to use a winch to flat steel.

- How to distinguish types of round steel.

...

...

...

- Using hammer of which weight is from 3 to 6 kg in an accuracy manner.

- Marking for poling to bend square stirrup, bent-up-bar and bulb flat steel with a diameter of 15 mm as measured in the construction drawing.

- Creating space for laying lintel steel, canopy steel, steel poles and common steel beam, binding and placing steel in positions specified in the design drawing under guidance.

- Washing and grinding a number of common tools such as chisels and making bender for bending steel rolls of diameter of less than 15 mm.

- Cutting round steel, shape steel and drilling holes in steel plates with available marks.

Grade 3/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to distinguish between mild steel and hardened steel.

...

...

...

- Capacity of using machines such as bending machines, cutting machines and piercing tools for cutting round steel and shape steel and maintenance methods.

- Common drawings of work assigned.

- Technical regulations on safety of steel processing and placing steel and general regulations on construction safety.

- Basic notion of use of welding machines and arc welding machines.

- Quality assessment standards applied for acceptance of steel products.

- How to distinguish compressed and drawn steel for the purpose of proper placement.

Capability:

- Self-making tools serving tasks assigned and working butt hinges and …..

- Laying and putting up reinforced steel poles and axis for common beam.

...

...

...

- Making steel doors with flower decoration by round steel and flat bars as designed in the drawing.

- Doing common welding such as tack welding and welding - joining.

Grade 4/5

Acquire knowledge and perform tasks of lower-level workers and the following:

Knowledge:

- How to use boiler and electric drilling, cutting and bending machines.

- Measurement methods to bend and join steel as designed.

- Detailed drawings of tasks assigned.

Capability:

...

...

...

- Measuring for putting up common trusses, producing shaped formwork of iron, types of steel cang and bolts serving installation of iron formwork.

- Making iron gates, doors with flower decoration by shape steel or by pipes with sophisticated patterns.

Grade 5/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Complicated drawings of reinforced steel work and discovering mistakes therein and mistakes in construction drawings for solutions.

- Tasks of grade-2 carpenters and bricklayers.

Capability:

- Measuring the surface and instructing lower-grade ironworkers to manufacture trusses of round iron and sophisticated shape (curved truss structure).

...

...

...

- Manufacturing aluminium products such as doors or cabinets.

- Making steel scaffold as required in the design drawing.

- Performing tasks of grade-2 carpenters and bricklayers.

5. HOUSE PAINTER (From grade 2 to 5)

Grade 2/5

Knowledge and capability:

Knowledge:

- How to distinguish common paints used in construction.

- Methods for closing gaps, plastering, polishing, smoothing surface, whitewashing and primer coat painting.

...

...

...

- Blending paints for primer coating and putty following specified formula under guidance and blending common paints for painting.

- Painting pipelines, types of wooden doors, whitewashing walls of construction works requiring ordinary techniques.

Grade 3/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to use paints suitable for each kind of task.

- Paint blending methods.

- Technical regulations on painting safety and general regulations on construction safety.

- Quality assessment standards applied for painting.

...

...

...

- Blending paints as required, regulating level of light and dark colors and frosting glass.

- Painting metal building components and multiple types of wooden doors.

- Lettering and painting such letters by samples under technical requirements.

- Whitewashing the ceiling and painting moulding.

- Pointing brick joints of thickness of 5 mm and more.

- Dying woods and varnishing.

- Forming certain types of slaked lime and applying faux painting to bricks

- Blending putty by formula.

- Finishing house decoration by putty, grinding technology and painting.

...

...

...

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Glossing and putty blending methods.

- How to manage and arrange a group of painting workers for independent small and medium-scale works.

- Characteristics of paint types and use thereof under technical requirements.

Capability:

- Pointing brick joints of thickness of less than 5 mm and drawing curved lines.

- Painting numbers and flowery patterns.

- Blending paints and certain types of slake lime as required.

...

...

...

- Fixing painting mistakes to make sure old and new painted walls have the same color.

- Performing tasks of bricklayers of grade 2/7.

Grade 5/5

Acquire knowledge and perform all tasks of lower-level workers and the following:

- How to draw advertising banners meeting technical and artistic requirements.

- Finishing the work surface by putty technology, polishing and painting works requiring special techniques and artistic skills.

- Instructions to lower-grade workers to perform hard painting-related tasks.

- Performance of tasks of bricklayers of grade 3/7.

II. GROUP OF CONSTRUCTION MACHINE OPERATORS

...

...

...

Grade 3/6

Knowledge and capability:

Knowledge:

1. In terms of engine:

- Working principles of internal combustion engine including the fuel supply system, lubrication system, cooling system and ignition system (for petrol engine)

- Structure and working principles of electric motor, technical parameters, and requirements applied for breakaway torque, method for wiring up to electric engine and safety of use of electric engine.

- Working principles and general structure of construction equipment such as compressor, pump, mixer and electric generator

- How to read simple drawings.

2. In terms of construction equipment:

...

...

...

- Understanding structure and working principles of safety valves, intake valves and exhaust valves.

- Understanding working principles and general structure of initial pressure gauge, vapor pressure gauge and voltage meter.

- Mastering types, quantity and grease lubrication points of equipment.

Capability:

- Operating proficiently aforementioned equipment following procedures, regulation and safety requirements.

- Knowing how to take care and maintain dynamical equipment and construction equipment before and after an operating session.

- Numbering and specifying condition of the equipment in charge when handing it over to the next team.

Grade 4/6

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

- How to adjust safety valves, intake valves and exhaust valves.

- Structure of each component and the whole system as well as working principles of diesel engine, petrol engine and electric engine of poppet valves.

- Working principles of cruise control system of the machine.

- Working principles and structure of water temperature gauge.

2. In terms of construction equipment:

- How to read machine drawings for the purpose of studying and using such machine.

Capability:

Powering electric motor by using electrical grid under technical and safety requirements.

- Operating combined compressing-pumping machine or combined compressing-mixing machine.

...

...

...

- Fitting, dismantling, checking and maintaining each machinery component.

- Performing maintenance work in a proper and sufficient manner under level 2 and 3 technical requirements.

- Adjusting types of winch brakes meeting technical and safety requirements.

- Checking and classifying steel cable quality for replacement purpose.

Grade 5/6

Knowledge:

Acquire knowledge and perform all tasks of lower-level workers and the following:

- How to adjust the governor to ensure maximum and minimum working capacity of the engine.

- Working principles and structure of internal systems such as lubrication system, cooling system and ignition system for electrical motor.

...

...

...

- Technical parameters.

Capability:

- Assembling, dismantling and maintaining the grade-4 machine in a fluent manner.

- Repairing common trivial machine damage and errors.

- Assembling and dismantling the machine in a fluent manner for movement purpose.

Grade 6/6

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Causes for breakdown of machine systems or elements.

...

...

...

Capability:

- Operating all types of construction machine in a fluent manner following technical procedures.

2. TOWER CRANE OPERATOR (From grade 3 to 6)

Grade 3/6

Knowledge and capability:

Knowledge:

- Safety regulations relating to crane operation.

- Functions of parts of the tower crane such as cables, hoist, motors, hoist transmission, tower body.

- How to distinguish types of oils used for the tower crane.

...

...

...

- Functions of the crane, supporting equipment and accessories of the machine in use.

Capability:

- Laying cables and hooking materials in a proper manner.

- Keeping a logbook of machine operation under guidance.

- Giving signal for 2-comined lifting during operation in an accurate manner.

- Arranging movement of vehicles to the crane within safety scope.

- Lifting materials of which weight is one third of that of the crane.

Grade 4/6

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

- Structure and working principles of each machine part.

- Functional parameters of the crane.

- How to select diameter and type of cables depending on material weight.

- How to join and replace cables under safety conditions.

- Locations and working principles of actuators to ensure occupational safety.

- Permission specifications of the rail when giving signals.

- Electrical system of the crane and safety field of crane operation.

Capability:

- Keeping a logbook of crane operation in an accurate manner, checking and maintaining the crane discovering damage for minor repair purpose.

...

...

...

- Testing the crane to ensure accurate movement thereof.

- Rectifying common electrical errors.

Grade 5/6

- Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to check and classify quality of cables used for loading for replacement purpose.

- All functions of crane elements such as cables, hoist, motors and safety equipment.

- How to accurately calculating the lifting angle when lifting materials of weight of from 5 to 8 tonnes suitable for bearing capacity of the surface.

 The electrical system of motors and actuators.

...

...

...

 The technique for building of each type of work and how to prepare plans for construction site arrangement for each construction work type.

Capability:

- Carrying out medium repair and adjusting the jib in an accurate manner to ensure occupational safety.

- Dismantling and maintaining motors.

Controlling combined lifting in an accurate and safe manner.

- Reading the drawing for assembling and dismantling the tower crane of weight of from 5 to 6 tonnes.

- Arranging light for construction at night.

- Adjusting types of brakes under technical and safety requirements.

Grade 6/6

...

...

...

Knowledge:

- How to read the drawing of electrical and mechanical system of the tower crane.

- How to arrange, assemble and dismantle the tower crane.

- How to read the construction work drawing to operate the tower crane.

- How to use material and assembling, dismantling and transporting methods.

Capability:

- Assembling types of complicated equipment in a proficient manner.

- Assembling components meeting technical requirements and occupational safety requirements.

- Sketching spare parts of the tower crane for manufacturing and repairing purpose.

...

...

...

- Managing movement of the crane for safety assurance purpose.

- Arranging the rail suitable for the construction work for safety assurance.

- Managing assembling, dismantlement and transportation of the crane of weight of from 5 to 8 tonnes meeting technical and safety requirements.

3. LOADER CRANE DRIVER

Grade 3/7

Knowledge and capability:

Knowledge:

1. In terms of engine:

- Working principles of two-stroke and four-stroke engine and comparison between strengths and weaknesses of each engine.

...

...

...

 The property and function of lubricants and hydraulic fluids.

 Impacts of service life of the machine on components thereof during operation.

 Structure and working principles of the starting system.

2. In terms of chassis and controls:

- Structure and working principles of main components of the crane such as revolving structure, lifting structure and safety structure in case of overload.

- The minimum and maximum lifting angle of the crane.

- The plan for laying cables applied for the jib lifting system and material lifting system.

- Common charts of control system instructions.

- Safety regulations on operation of the crane.

...

...

...

- Repairing minor damage such as power failure in drive motor (replacing fuse) or errors in exhaust system, hydraulic system and regulating certain trolley structure before lifting.

- Conducting level-2 maintenance of lubrication system and fuel supply system.

- Braiding hoist cables under safety conditions.

- Determining permissible weight and size of materials by looking at it to set up appropriate crane.

- Checking and replacing the lifting cable if the checking result shows that the cable fails to meet safety requirements.

- Giving signs for lifting materials of the same code under normal circumstance.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- How to make the plan for ordering operation of four-stroke engine and inline-four or inline-six engine then specify how to adjust the valve in a fastest manner.

- The structure of the piston and how to compare strengths and weaknesses of types of piston head. The purpose of such structure.

- The structure and working principles of the lubricant pump and impacts of lubricant type and quality on the abrasion resistance of machine parts.

- The structure and working principles of a fuel injection pump.

2. In terms of chassis- construction equipment:

- How to sketch and describe the structure and working principles of a single plate clutch, double clutch, hydraulic engine and torque convertor. Parameters for checking and regulating the main clutch.

 Working principles of digital locks and constant-velocity joints.

- Working principles of the electromagnetic brake.

- How to draw a load chart of the crane in use.

...

...

...

Operating at least 2 types of crane in a proficient manner.

- Determining causes for damage and methods for handling incidents occurring during machine operation such as failure to lifting the jib or revolving failure.

- Selecting the lifting angle suitable for materials of critical weight and dimension.

- Repairing damage of hoist system and braiding hoist cables meeting safety conditions.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- How to draw an outline of the structure of the pressure relief valve and governor of engines used. How to compare differences of the aforesaid valves and governors.

...

...

...

- How to adjust fuel-injection pump and maximum and minimum number of turns.

- The structure and working principles of a voltage regulator with contact points.

2. In terms of chassis- construction equipment:

- The structure and working principles of the hydraulic pump and hydraulic motor.

- Working principles of the hydraulic steering system.

- Structure and working principles of the active crane.

- How to read the drawing of hydraulic outline of the crane.

Capability:

- Operating crawler cranes and wheel-mounted cranes in a proficient manner.

...

...

...

- Checking and repairing damage during operation.

- Selecting the appropriate hoist cable when knowing the weight to be lifted.

- Conducting level-3 maintenance meeting technical requirements.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- How to make general comparison between strengths and weaknesses of common engines.

- Common damage and repairing methods.

...

...

...

- How to check and adjust the active crane and revolving system of the crane.

- Working principles of the mechanical-electric control system, hydraulic control system or combined electric – air – hydraulic control system.

- The meaning of the load chart.

- The data of maximum and minimum oblique angle of types of crane in operation.

Capability:

- Giving guidelines to lower-grade workers.

- Dismantling and repairing the steering system, active hoist and revolving system.

- Suggesting methods for repairing common damage by available equipment.

- Carrying out level-4 maintenance.

...

...

...

Grade 3/7

Knowledge and capability:

Knowledge:

1. In terms of engine:

- The structure and working principles of two-stroke and four-stroke petrol engine and diesel engine.

- How to make comparison between the structure and working principles of the starting system of petrol engine and those of the diesel engine.

- The impact of friction during operation of machine parts and technical parameters and permissible gap among the piston, piston ring and cylinder.

- Machine operating orders. The meaning of the early valve opening angle and late valve closing angle.

- The structure and working principles of the crankshaft, crank, piston.

...

...

...

- Insurance technique and occupational safety requirements during operation.

2. In terms of chassis:

- How to draw the outline of structure and working principles of the gearbox, main brake and knowing parameters to adjust the main and supporting brake.

- Signs, quantity and using limit of lubricant oils and greases used in the vehicle in operation.

3. In terms of construction equipment:

- Working principles of the steering system, mechanical – hydraulic control system, moving system and brake system.

- The function of each type of equipment and components of bulldozer, grader and scraper.

Capability:

- Carrying out technical maintenance in a proper and sufficient manner and assessing machine condition before operation.

...

...

...

- Dealing with the case in which there is air in the fuel system.

- Maintaining the accumulator.

- Keeping a detailed logbook of machine operation and oil consumption.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- How to make comparison between differences and similarities of petrol engine and two-stroke and four-stroke diesel engine.

- The meaning, function and structure of piston head of common machine.

...

...

...

- Steps to adjust valve clearances, valves and mastering technical parameters for adjustment to different types of engine.

- The structure and working principles of the starting engine.

2. In terms of chassis:

- How to draw the outline of the structure and working principles of the hydraulic power steering.

- The suspension system of the arawler tractor and the function of each tractor type.

- How to make comparison between the structure and working principles of the dry clutch and the wet clutch. Strengths and weaknesses of the aforesaid clutches.

3. In terms of construction equipment:

- The structure and working principles of the hoist and knowing how to adjust the lifting process and the calf-wheel brake.

- Procedures for operating the grader, scraper and bulldozer.

...

...

...

Capability:

- Checking and adjusting valve clearances.

- Repairing common damage.

- Checking and adjusting coplanarity of sprocket-wheels and tension rollers.

- Knowing how to ignite the petrol system.

- Carrying out level-2 maintenance in a proficient manner.

- Operating and controlling from 1 to 2 types machine in a proficient manner.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

1. In terms of engine:

- How to draw the structural outline of the pressure relief valve and governor of engines used and make comparison of differences of such valve and governor.

- How to draw a chart of the structure and working principles of the fuel injection pump.

- How to adjust the maximum and minimum turns.

- Parameters for adjusting early fuel injection angle of each engine type.

- How to make comparison between differences of the direct current generator and direct current motor.

2. In terms of chassis:

- How to draw a diagram of structure and working principles of the hydraulic pump installed in the machine.

- How to draw a diagram of gears and common damage and how to repair such damage.

...

...

...

- The structure of the hydraulic system, working principles and function of each parts of the hydraulic system.

- How to adjust the hydraulic system, suspension system and using purpose of each system.

- Common damage of the hydraulic system and suspension system and how to repair such damage.

Capability:

- Adjusting the drive sprocket play.

- Adjusting the alignment of the crankshaft and main clutch.

- Handling difficult on-site repairs such as rev matching and unpredicted damage of the fuel system, steering system and braking system.

- Repairing common damage of the hydraulic system and electric system.

- Carrying out level-3 maintenance in a perfect manner.

...

...

...

- Processing soil following the procedure and technical requirements.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- How to make comparison of differences of types of fuel injection pumps. And sprinklers

- How to sketch structure and specify the meaning of differences of piston head types.

- How to draw and describe the gas distribution diagram. How to make comparison between weaknesses of the petrol engine and 90 degree-V-shaped four-stroke diesel engine with 6 cylinders

- How to take care and maintain the whole fuel supply system.

...

...

...

2. In terms of chassis- construction equipment:

- How to read the drawing and draw a diagram of structure and working principles of the hydraulic distribution box and hydraulic cylinders.

- Brake structure and knowing how to adjust and take care brakes, damage thereof and repairing methods.

- How to adjust ball-bearings of the driving wheels.

- Common damage of the speed reducer and repairing methods.

Capability:

- Repairing all unexpected damage of all machine elements and systems.

- Carrying out all tasks of level-4 maintenance in a perfect manner.

- Conduct construction under procedures and technical requirements in an effective manner with productivity suitable for complicated topography.

...

...

...

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- How to make comparison of strengths and weaknesses of the whole machine or parts thereof.

- How to assemble and run in new machines before they are put in use.

2. In terms of chassis- construction equipment:

- How to make comparison of the structure, strengths and weaknesses of the chassis of each used machine and the new one.

- How to read and explain the structure and working principles of the controlling system of recently imported machines.

Capability:

...

...

...

- Drawing the diagram of machine elements requiring processing meeting technical requirements.

- Preparing periodic plan for maintaining and repairing motorbikes.

- Specifying causes for damage of a single part or a group of parts of the machine.

- Working out methods for rectifying the most difficult malfunctions.

5. EXCAVATOR OPERATOR

Grade 3/7

Knowledge and capability:

Knowledge:

1. In terms of engine:

...

...

...

- Comparison of the structure and working principles of four-stroke and two-stroke engine, petrol engine and diesel engine.

- Impacts of the heat on operation of the internal combustion engine. The structure and working principles of the cooling system of internal combustion engine.

- The friction and impacts thereof on operation of machine parts. Working principles and requirements of the lubrication system.

- Structure and working principles of the fuel supply system. How to read the diagram of air distribution of four-stroke diesel engine and inline-four engine.

- How to maintain and use the accumulator.

- Technical features of the engine of the excavator in operation.

2. In terms of chassis:

- How to read the kinematic diagram and understanding working principles of the excavator in operation.

- The structure and working principles of the dry clutch, single and double plate clutch and knowing adjustment parameters and methods.

...

...

...

3. In terms of construction equipment:

- How to read the diagram of laying cables for the machine in operation and knowing parameters of different types of cables used in each type of construction equipment.

- Working principles and the structure of the hoist.

- The function of types of clocks, warning lights, jib, pedal and knowing how to control excavator in use.

- As for hydraulic excavators, types of hydraulic fluids used, fluid amount and parameters of cylinders corresponding to each type of construction equipment.

Capability:

- Checking and assessing condition of the engine, construction equipment and the whole excavator before operation.

- Starting the excavator meeting technical requirements (as for excavators undergoing major repair or those not in operations for a long time).

- Checking condition of the engine and the whole excavator through checking their clocks, warning lights and external factors such as noise of running engine, smoke or air bubbles before and during operation.

...

...

...

- Switch off the engine meeting technical requirements.

- Checking and adjusting the belt satisfying tension force requirements, belts, combined clutches, clutches and hoist brakes.

- Tightening the bolt of the excavator head meeting order and force requirements.

- Carry out all tasks of maintenance work meeting requirements for maintenance before operation, daily maintenance and level-2 maintenance.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- Particular structure of each excavator component and requirements for maintenance of air distribution system of the internal combustion engine.

...

...

...

- Amounts and types of lubricant oils and greases and characteristics thereof and time for lubrication of the whole excavator

- The structure, working principles and common damage of the water pump and the cooling system of the engine.

- How to read the diagram of the electric system of the internal combustion engine and understanding the structure and working principles of the direct current generator and alternating current generator.

2. In terms of chassis:

- Working principles and common damage of the reverse system and repairing methods.

3. In terms of construction equipment:

- The structure and working principles of types of bucket arm moving system.

- How to adjust and repair common damage of the fuel pump of the diesel engine and the carburetor of the petrol engine.

- How to repair common damage of the reverse system and bucket arm moving system.

...

...

...

- How to carry all tasks of the maintenance work in a proper manner meeting level-4 excavator maintenance requirements.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- Comparison between the flat and unflat piston head and knowing types of piston head of certain internal combustion engines.

- How to read the diagram of air distribution in 90 degree and V shaped four-stroke engine with six cylinders.

- The structure and working principles of the multi-model governor of the internal combustion engine.

- Basic characteristics of the lubricant oils and greases used for motorbikes.

...

...

...

- The structure, working principles and common damage of the electricity generator.

2. In terms of chassis:

- The structure and working principles of the torque convertor.

- The structure and working principles of different types of hydraulic accumulators.

- Parts used to ensure safe operation of the excavator.

Capability:

- Adjusting valve clearances of the internal combustion engine.

- Maintaining and taking care the torque convertor.

- Maintaining, adjusting and repairing common damage of the bevel gear clutch for changing rotation direction.

...

...

...

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

1. In terms of engine:

- Comparison of structure, working principles, process of combined air fuel formation, combustion process and efficiency in thermal energy use in diesel engine and petrol engine.

- How to draw and explain the diagram of air distribution in 90-degree V-shaped four-stroke diesel with 8 cylinders.

- The structure, working principles and maintenance requirements of the fuel injection pump.

- The structure and working principles of the voltage regulator.

- The structure and working principles of the starting system.

...

...

...

- How to draw and explain the diagram of the compressed air controlling system and main components thereof.

- How to draw and explain the diagram of the hydraulic system and main components thereof.

- How to sketch structure of simple elements of the excavator meeting technical requirements for working purpose.

Capability:

- Repairing most of damage of the engine and chassis.

- Adjusting the maximum and minimum number of turns of the internal combustion engine.

- Checking and adjusting the voltage regulator.

- Checking, maintaining and adjusting the hydraulic pump, air compressor, safety valve and cylinder of the controlling system of the excavator.

Grade 7/7

...

...

...

Knowledge:

1. In terms of engine:

- Comparison of strengths and weaknesses in general of each group of parts of each machine.

- How to draw and explain the hydraulic diagram of the hydraulic drive system.

- Causes for damage, preventing and repairing methods.

Capability:

- Repairing most of serious malfunctions, except for those of the electrical system and injection pump.

- Preparing plans for periodic maintenance and repair of a group excavators used for construction corresponding to the time for use of such excavator.

6. PILE-DRIVER OPERATOR

...

...

...

Knowledge and capability:

Knowledge:

1. In terms of hammers:

- The fuel supply system of the diesel pile hammer.

- The structure, working principles and maintenance requirements of the fuel pump.

- Working principles of the diesel pile hammer.

- The structure and technical characteristics of steam, diesel and power hammers.

- How to distinguish between the vibrating hammer and single - action hammer.

2. In terms of construction equipment and controlling equipment:

...

...

...

- How to draw and explain structures and functions of transmission parts, clutches, brakes and hammer driving system of common pile drivers.

- How to read the diagram of power transmission and cable joining of common diesel pile drivers.

- Methods for safety operation.

Capability:

- Controlling simple diesel pile drivers.

- Assembling, dismantling and maintaining certain parts of the simple pile driver such as the brake, friction clutch and main hoist.

- Carrying out shift-based maintenance of common pile-drivers in a proficient manner.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

1. In terms of the hammer:

- The structure and working principles of types of hammer, especially diesel hammer and vibrating hammer.

- The meaning of technical parameters of the hammer such as weight, force of falling hammer on the pile head, size and length of the pile.

- Factors affecting the impact of the diesel hammer and vibrating hammer.

- Technical parameters of the electric motor of the vibrating machine and transmission principles of the pile-driver.

2. In terms of construction equipment:

- The structure and working principles of the hammer of a pile-driver and function thereof.

- How to read the diagram of cable joining for the hammer pedestal of the pile-driver.

- How to read diagram of the transmission system and working principles of the hoist.

...

...

...

- Basic structure of the power transmission system of the pile-driver used.

Capability:

- Adjusting the hoist clutch and hoist brake.

- Assembling and dismantling complicated parts of the pile-driver.

- Assembling and dismantling the hammer and pile-driver meeting technical and safety requirements.

- Repairing damage of the hammer.

- Adjusting the fuel system of the diesel hammer.

- Using and operating the electric system under safety requirements.

Grade 5/7

...

...

...

Knowledge:

1. In terms of hammers – vibratory equipment:

- Working principles of the fundamental machine, diesel hammer, vibratory pile-driver, structure and technical parameters of the engine of the basic pile-driver, chassis, controlling equipment, chassis hoist, transmission and engine of the pile-driver.

- The hydraulic system used for controlling the oblique angle of the direction equipment and adjustment to the pile-driver foot for the purpose of improving the stability.

- How to distinguish working principles of the 3-phase wound rotor induction motor and 3-phase squirrel-cage rotor induction motor and understanding technical characteristics and function of each type of electric motor.

2. In terms of construction equipment:

- The structure and factors causing impacts on durability, structure and stability of the pile driving hammer.

- Comparison of strengths and weaknesses of types of hammers.

- How to read electric diagram and hydraulic controlling diagram of the hammer.

...

...

...

Capability:

- Powering the electrical system of the pile-driver and assembling the hydraulic system and air compressing system according to the diagram.

- Assembling and dismantling complicated parts of the pile-driver.

- Assembling, dismantling and transporting the hammer.

- Repairing common malfunctions of the power hydraulic system and air compressing system of the pile-driver.

- Controlling the pile-driver in a proficient manner meeting technical and safety requirements.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- Factors causing impacts on lubrication of the hammer and parameters for assembling the diesel hammer.

- Materials used for producing parts and cylinders of the diesel hammer. The using purpose of such materials.

- How to read diagram of the transmission system and working principles of the vibrating hammer. Common damage.

- Technical parameters of vibratory pile-drivers, function and using extent of each vibratory pile-driver and making comparison of weaknesses of such pile-drivers.

2. In terms of construction equipment and controlling equipment:

- How to read the diagram of the hydraulic system, hydraulic controlling system and power system of the pile-driver.

- The structure and working principles of types of hydraulic pumps and hydraulic filters.

- The structure and working principles of the hammer head and factors affecting the service life and operation of the power system.

- How to distinguish and compare strengths and weaknesses of the structure of moving system, rails, wheels and tracks.

...

...

...

- Calculating and selecting the hammer meeting job requirements.

- Assembling and dismantling parts and systems of the pile-driver in a proficient manner.

- Assembling, dismantling and adjusting the power system and hydraulic air compressing system.

- Assembling and dismantling the pedestal, hammer and controlling equipment.

- Adjusting parameters and finishing the assembling of the pile-driver in a proficient manner.

- Working out methods for repairing structural parts of the pile-driver.

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- How to classify types of pile driving hammers and comparing strengths and weaknesses thereof.

- The structure and working principles of the air cooling system and water cooling system of the diesel hammer and comparing strengths and weaknesses thereof.

- How to read the diagram and structure of pipe-type diesel hammer and pole-type diesel hammer.

2. In terms of construction equipment:

- How to read complicated power and hydraulic diagrams of types of pile-drivers.

- Parameters for adjusting and repairing the hydraulic control valve and hydraulic pump.

- The structure and working principles of types of electric motors. Factors affecting the capacity and number of turns of the electric motor.

- The diagram and working principles of the start circuit, safety circuit, controlling circuit and dynamical system.

Capability:

...

...

...

- Defining the specific energy consumption of the pile-driver and productivity thereof.

- Assessing and predicting the working capacity of the pile-driver.

- Preparing plans for use of the pile-driver and plans for maintaining and repairing the pile-driver.

- Assembling and processing the pile-driver during construction and repairing damage in a proficient manner.

III GROUP OF EQUIPMENT INSTALLER

1. MECHANICAL EQUIPMENT INSTALLER

Grade 2/7

Knowledge and capability:

Knowledge:

...

...

...

- How to use and maintain devices used for assembling and dismantling cold machines and common machines.

- Occupational safety requirements and how to use and maintain equipment under safety requirements and methods for fire safety of workers such as electricity and mechanical safety.

Capability:

- Using and maintaining devices used for assembling and dismantling cold machines and pulling, shooting or prising devices meeting technical requirements and using common measurement tools.

- Straightening plane surface, simply moulding thin corrugated iron and steel of diameter of less than 14 mm.

- Putting simple equipment in designated positions.

Grade 3/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- How to read detailed drawings of the equipment of less than 7 parts and knowing how to assemble such equipment. Signs in the drawing and drawing the structure of simple parts such as coaxial axis, bolt and screw nut.

- The basic notion of allowable errors in mechanical assembly.

- The structure and working principles of common machines used for cold-working and installing the drill, grinder, boring machine, welder, hoist, etc. - Primary procedures and regulations applied for equipment installation to meet technical and safety requirements.

- Steps of equipment transport and installation.

Capability:

- Performing forge-working and cold-working for working square, rectangle, hexagon or gill arch shape by hand devices and machines, equipment and materials used for cold-working. Using welders for tack welding simple joints that cannot be separable.

- Performing simple lifting and transporting work.

- Determining the central point, core and assembling pumps, blowers and air compressors according to drawings.

- Biding and joining cables under cable use standards for equipment installation.

...

...

...

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read the drawing of equipment distribution based upon projections to define the central point and surface for placing the equipment.

- How to read drawings for assembling equipment combination and parts thereof to determine working principles of such equipment.

- Allowable errors in basic joint assembling and knowing how to use charts of joints.

Capability:

- Shaving and testing the plane in an accurate manner.

- Adjusting common equipment and axis joints of medium accuracy.

...

...

...

- Using measurement tools in an accurate manner such as micrometers, displacement meters and revolution-counters.

- Transporting, installing, testing and adjusting common equipment of weight of less than 4 tonnes.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read the sectional drawing used for equipment assembling to determine working principles and using technique of such equipment.

- How to make common detailed drawings to work and restore the equipment and suggesting technical requirements and working materials.

- How to read the table of allowable errors in equipment assembling in a proficient manner.

- How to establish technological procedures for assembling quietly sophisticated mechanical equipment such as crushing machine, large-sized pumps and knowing how to operate such equipment.

...

...

...

Capability:

- Checking rolling bearings, bearings and axes of non-ferrous metal and alloy in an accurate manner.

- Using lifting machine for transporting purpose in a proficient manner.

- Working out methods for assembling equipment of weight of more than 5 tonnes by arranging materials, human resources, tools and working locations in a logical manner for safety assurance.

- Transporting, installing, adjusting and testing equipment of weight of more than 5 tonnes with high accuracy and discovering and dealing with mistakes after installation and during operation.

- Wiring the electric motor and circuit breaker of small capacity associated to the mechanical equipment.

- Using measuring and testing equipment in a proficient manner.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

- How to read the drawing of plane distribution of a workshop or a machine combination such as concrete plant and crushing and screening plant.

- How to read structural and sectional drawings of the foundation and machine pedestal and signs at construction site requiring equipment installation.

- The structure and function of materials used for making metal and non-metal bearings.

- How to select and deal with allowable errors of joints.

Capability:

- Casting alloy main bearings.

- Using drilling, reaming and polishing machines and testing bearings in an accurate manner.

- Checking and setting the crankshaft engines and compressors.

- Performing arc welding in a proficient manner and using oxy-fuel welding machine to cut and weld simple joints.

...

...

...

- Checking, accepting and discovering mistakes during installation and suggesting solutions.

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings of construction, power grid, pipes and mechanical equipment used in a production line then suggesting methods for installing mechanical equipment and connecting with other relevant tasks.

- Methods and making technological estimate used for construction, organize construction and preparing economical and technical plans for the construction.

- The notion of automation.

Capability:

- Transporting, installing or giving guidelines for installing and checking turbine bearings, drive systems and simple electric generators.

...

...

...

- Designing, renovating and working new advanced tools and shuriken for checking and assembling purpose.

- Adjusting and operating equipment of high accuracy.

- Performing relevant tasks of workers in charge of welding, craning, electric assembly in construction.

2. ELECTRIC EQUIPMENT INSTALLER

Grade 2/7

Acquire knowledge and perform tasks as follows:

Knowledge:

- Nature of the current and basic electric and electronic phenomenon.

- How to apply basic rules for direct current an alternative current in electric techniques.

...

...

...

- Functions of cold and electrical devices and ordinary checking devices.

- The function and using purpose of the electrical machine.

- Mechanics and electricity safety requirements.

Capability:

- Using tools to perform cold-work and common devices used in electricity industry such as saws, rasps, types of piles and phase testers.

- Making simple consoles and tapping saddles.

- Marking, drilling and assembling consoles and electrical panels.

- Wiring consoles and running cable supporters.

- Wiring meeting contacting and good electrical insulation requirements.

...

...

...

- Transporting electric motors and equipment to the installation position meeting safety requirements.

Grade 3/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Nature, use and maintenance of electrical conductors and insulators.

- How to use and maintain electrical wires, cables and common accessories.

- The structure and working principles of electrical equipment such as electrical motors, transformers and generators.

- The structure and working principles of common devices.

- The structure and working principles of common testing devices.

...

...

...

- Basic techniques of cold mechanics.

- Methods for lifting and transporting equipment.

Capability:

- Using cold-work devices such as chisels, rasps, saws and drills in a proficient manner.

- Using electrical devices to assemble dismantle and wire electrical equipment serving daily activities.

- Making electrical circuit for lighting purpose and sockets for equipment serving daily activities.

- Wiring small-size 3-phase alternating current motors.

- Applying tin welding to the wire head to ensure good contact.

- Bending pipes of diameter of 25 mm and installing terminal blocks and distribution boxes meeting technical and artistic requirements.

...

...

...

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read the drawing of electrical design of three to five-storey houses with 2 sections including lighting system, refrigeration appliances, pumps, etc.

- How to read electrical drawings of common cutting machines.

- Conductivity principles of the 3-phase electrical motor and understanding technical data thereof.

- Principles for wiring and installing low-voltage power pole.

Capability:

- Welding and compressing cosses.

...

...

...

- Installing, dismantling, checking and drying engines of small capacity. Determining technical parameters of the engine to work out methods for maintaining, repairing and drying such engine.

- Installing the grounding system inside and outside of the five-storey house with 2 sections.

- Building a low-voltage cable system running from the distribution cable to floors and rooms consuming power in each apartment.

- Building the low-voltage power pole and laying underground cables meeting technical requirements.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- The structure and working principles of electrical measurement devices such as voltmeters, amperemeters and multimeters.

- The structure and working principles of complicated electrical instruments such as types of relays and gas or electric automatic structure.

...

...

...

- Structure and working principles of the electrical circuit installed on the dedicated devices.

- How to measure wires and electrical equipment of the power consuming household.

- How to measure the following materials: wires, cables, different electric equipment and electrical insulators used for a civil work or industrial work under different environments (wet, hot, dusty, acid or alkali environment)

Capability:

- Using electrical measurement tools such as ohmmeters, voltmeters and ampmeters.

- Making heads of high and low-voltage cables.

- Repairing mechanical and electrical elements of common electrical equipment. Winding electrical motors and small and medium-size transformers.

- Using equipment and devices serving cold-work, repair and working of accessories of electrical equipment.

- Adjusting inter-joints between the engine of the electrical generator and other conjugate equipment such as the pump and power system

...

...

...

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read the drawing of electrical system design and installation of the area with power station, underground routes, pumping station, concrete plant and crane.

- Technical regulations on installation and technical parameters of the cable, wire and equipment for operation assurance.

Capability:

- Establishing technological procedures for construction of houses, stations and workshops and electrical equipment installation.

- Operating the power grid after construction for transfer purpose.

- Checking and adjusting mechanical and electrical elements of electrical generator combination of 55 KVA, direct current and alternating current transformers and cutting machines.

- Blending materials for tin welding suitable for welding of copper and aluminium wires.

...

...

...

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- Procedures for designing simple civil and industrial power grids.

- How to apply electrical technique manuals in installation and repairing work.

- The process for checking, testing and adjusting electrical equipment and operation process for acceptance of construction works after such work is put in use.

Capability:

- Drying, checking, maintaining and repairing electrical equipment.

- Connecting parallel electrical equipment in a power grid.

...

...

...

- Preparing construction plans in terms of material and human resource arrangement that achieve high efficiency in construction.

- Testing and adjusting equipment of magnetic starters, circuit breakers and miniature circuit breakers.

3. PETROLEUM PIPE INSTALLER

Grade 2/7

Acquire knowledge and perform tasks as follows:

Knowledge:

- Nature and function of metal, alloy and non-metal.

- How to distinguish types of seaming tubes and steel tubes.

- How to distinguish common accessories used in tube industry such as valves, tees, elbows, gaskets.

...

...

...

- Using common tools used for cold-working of pipelines such as hammers, chisels, iron saws, screw-cutters, threads, etc.

- Threading pipes of diameter of less than 30 mm by pipe threading machine.

- Performing hot and cold bending of metal pipes.

- Filing the pipe openings for joining or welding purpose

- Installing the flanges for pipe joining by bolts and bearing plates.

- Chiseling and making a drain on foundation and walls for laying pipes.

Grade 3/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

...

...

...

- Nature, use and maintenance of metal and nonmetal pipes and accessories thereof.

- Cold-working, bending and welding work.

- Tasks of lifting work.

- Tasks of pipe installation.

Capability:

- Using devices used for cold-working such as hammers, chisels, files and saws in a proficient manner.

- Using devices serving pipe installation such as camlock couplings, pipe cutting and bending devices, tackles, hoists, tees, etc.

- Bending pipes of diameter of less than 50 mm at accurate angle.

- Carrying out tack welding to join pipes together after adjustment as required.

...

...

...

- Biding cables to put pipes in the installation position by hand.

- Using simple measuring and checking tools used in pipe installation such as rulers and spirit levels in a proficient manner.

Grade 4/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings of simple pipes used in construction of work components.

- How to locate the central point of the surface when excavating soil and installing pipes.

- Expansion of pipe installation.

- Pipeline pressure (high, medium and low-pressure)

...

...

...

- Bending pipes of diameter of from 50 to 100 mm at accurate angle by hand (for hot bending) or machine.

- Testing to make sure there is no clearance in valves of diameter of from 50 to 150 mm of medium pressure.

- Working hose clamp used for joining steel pipes of diameter of 16 mm to 50 x 50 L-shaped steel and connecting pipes by flanges at the center in such a way that no clearance is found.

- Using types of reducers, tees, elbows and joining planes together.

Welding to join metal pipes together to ensure no clearance is found in pipes of medium pressure.

- Connecting plastic pipes to rubber pipes by glue to ensure no clearance is found in medium-pressure pipes.

- Making estimates of materials, devices and human resources needed for installation of a simple piping system and testing the pressure of such piping system.

Grade 5/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

...

...

...

- How to read the piping drawing of the construction work with more than one piping system.

- Working properties of high, medium and low-pressure pipes or pipelines of different solvents.

- Nature and use of pipeline cleanser.

- Methods for establishing procedures for testing pressure of a complicated piping system.

Capability:

- Testing large-size gas valves.

- Bending expansion pipes or working expansion pipes by iron sheet.

- Bending pipes of diameter of 159 mm by hot bending or pipe bending machine.

- Using reducers, T tees, elbows depending on the pipe size.

...

...

...

- Using lifting equipment in a proficient and safe manner in conjunction with manual methods to install the pipe.

- Using the welding machine in a proficient manner to join metal pipes.

Grade 6/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read piping drawings of construction works including drawings of combined piping system to work out methods for construction in conjunction with other works.

- Types of pipes and piping systems of different materials to work out appropriate construction methods.

- The function of machines used for checking tightness and durability of welding joints of modern pipelines.

Capability:

...

...

...

- Putting heavy valves in the installation position by hand or lifting machine.

- Adjusting the safety valve of the pressure system requiring advanced techniques.

- Preparing plans for construction of a project component (arrangement of human resources, materials and equipment).

- Performing arc welding and oxy-fuel welding in a proficient manner to connect pipes together and tighten pipes.

Grade 7/7

Acquire knowledge and perform all tasks of lower-level workers and the following:

Knowledge:

- How to read drawings of piping systems of new construction works and knowing how to renovate such system to make technological charts and prepare methods for installing quite complicated piping system by coordinate.

- Rasping ventilation principles to work out technological methods for installing ventilation system of civil and industrial works.

...

...

...

- Structure and use of equipment in the piping system to install pipes and deal with technical incidents.

- Principles and methods for lifting, transporting and installing pipes.

- Allowable errors in installation of pipes and equipment used and reading the allowance list in a proficient manner.

Capability:

- Transporting, installing, repairing and operating complicated piping system used in construction requiring complicated combined equipment.

- Installing, dismantling, repairing and adjusting complicated valves of blowers.

- Checking and adjusting the piping system of construction work, discovering damage and recording the repairing process.

- Restoring pipes and pipe components of complicated piping systems used.

- Using lifting equipment together with machine and manual methods to construct large-scale works.

...

...

...

- Understanding and conducting maintenance of pipelines which is similar to the job of grade-3 maintenance workers (working under the guidance of technicians).

Quyết định 163/BXD-KHCN năm 1997 về tiêu chuẩn cấp bậc công nhân kỹ thuật xây dựng do Bộ trưởng Bộ Xây dựng ban hành