CIRCULAR

ISSUING NATIONAL TECHNICAL REGULATION ON STATIONARY PUMPS FOR FIRE PROTECTION

Pursuant to the 2018 Law on Public Security;

Pursuant to the 2006 Law on Technical Standards and Regulations;

Pursuant to the Government's Decree No. 01/2018/ND-CP dated August 6, 2018, defining the functions, tasks, powers and organizational structure of the Ministry of Public Security;

Upon the request of the Director of the Central Department of Fire Safety, Firefighting, and Rescue;

The Minister of Public Security herein promulgates the Circular issuing the National Technical Regulation on stationary pumps for fire protection No. QCVN 02:2020/BCA.

Article 1. National Technical Regulation on stationary pumps for fire protection No. QCVN 02:2020/BCA is enclosed herewith.

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This Circular is entering into force as from October 4, 2020.

Article 3. Implementation responsibilities

1. Director of the Central Department of Fire Safety, Firefighting, and Rescue shall have the burden of inspecting, supervising and pushing for implementation of this Circular.

2. Heads of units directly under the Ministry of Public Security, Directors of Police Departments in centrally-affiliated cities and provinces and concerned entities and persons shall be obliged to implement this Circular.

In the course of implementation hereof, should there be any issue or problem, Police forces of units, local authorities and entities or persons involved must report to the Ministry of Public Security (Central Department of Fire Safety, Firefighting, and Rescue) for timely instructions./.

MINISTER




General To Lam

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NATIONAL TECHNICAL REGULATION ON STATIONARY PUMPS FOR FIRE PROTECTION

PREFACE

QCVN 02:2020/BCA is composed by the Central Department of Fire safety, Firefighting, and Rescue as a chief author; reviewed by the Ministry of Science and Technology; and released by the Ministry of Public Security as an annex to the Circular No. 52/2020/TT-BCA dated May 26, 2020.

NATIONAL TECHNICAL REGULATION ON STATIONARY PUMPS FOR FIRE PROTECTION

1. GENERAL PROVISIONS

1.1. Scope of application

This Regulation lays down safety and technical requirements for design, installation, operation, testing, field inspection, maintenance and management of stationary pumps for fire protection.  

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Not only does this Regulation apply, but other fire safety requirements set out in other relevant documents are also obeyed.

1.2. Subjects of application:

This Regulation is binding upon agencies, entities and persons involved in design, installation, operation, testing, field inspection, maintenance and management of stationary pumps for fire protection within the territory of Vietnam.  

1.3. Referenced publications

References used herein are those in the version mentioned hereunder. If any reference has been replaced by another version thereof, the new version of such reference, including amendments or supplements (if any), shall prevail. They include:

1.3.1. QCVN 06:2020/BXD: National Technical Regulation on fire safety for buildings and constructions.

1.3.2. TCVN 2622:1995: Fire safety for buildings and constructions – Technical requirements;

1.3.3. TCVN 4513:1988: Internal water supply – Design standard.

1.3.4. TCVN 7336:2003: Fire protection - Automatic sprinkler systems - Design requirements

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For the purpose of this Regulation, terms used herein shall be construed as follows:

1.4.1. Stationary pump for fire protection: A complex of pieces of equipment, including fire pumps, jockey pumps and fittings or accessories that interconnect to form a system to supply firefighting water to extinguishing systems.  The operating scope of a stationary pump for fire protection extends from the suction pipe to the stop valve connected to the main pipeline of the extinguishing system.  

1.4.2. Fire pump: An assembly set comprising a fire pump, drive motor, controller and other fittings or accessories. A fire pump is composed of the duty (main) fire pump, the standby pump and the jockey pump.  

1.4.3. Pressure maintenance (jockey or make-up) pump: A pump designed to maintain the fire extinguishing system’s pressure within the preset limits when firefighting water does not flow.  

1.4.4. Fire pump: A pump providing firefighting water pressure and flow.

1.4.5. Vertical turbine (vertical shaft turbine-type) fire pump: A centrifugal pump containing one or more staged impellers vertically mounted on the same pump shaft; the discharge outlet perpendicular to the shaft and the suction inlet.       

1.4.6. Diesel engine: An internal combustion engine in which the fuel is completely burned by the heat generated from compression of air occurring in the combustion chamber.  

1.4.7. Fire pump controller: A combination of devices used for commanding, in a predetermined manner, the start and stop of the fire pump drive, monitoring and signaling the status and condition of a fire pump cluster.

1.4.8. Series fire pump unit: A pump set in place to operate in a series arrangement where the first fire pump takes suction directly from a water supply and each sequential pump takes suction under pump pressure from the preceding pump.     Two pumps that operate in series through a tank(s) or break tank(s) are not considered part of a fire pump cluster.

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1.4.10. Drawdown: The vertical difference between the pumping water level and the static water level in a water tank. 

1.4.11. Alarm signal for fire pump supervision (supervisory signal):

A signal used for supervision and notification of the operational condition of a fire pump system.

1.4.12. Value of rotor overcurrent protection for a motor: A current value which is set to operate an overcurrent protection device when the current passing through a motor's rotor reaches this value in the specified time.     

1.4.13. Phase loss (phase failure): An event in which one or more, but not all of, phases of a multiphase power supply is/are lost.

1.4.14. Pressure regulating device: A device designed for reducing, regulating, and controlling or restricting water pressure.

1.4.15. Switch

- Isolating switch: A switch intended for isolating an electric circuit from its source of power. It has no interrupting rating, and it is intended to be operated only after the circuit has been open by some other means.    

- Automatic transfer switch (ATS): Self-acting equipment for transferring the connected load from one power source to another power source.

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1.4.16. Pressure reducing valve: A valve which is designed for the purpose of reducing the hydraulic pressure of water running through it in the direction from the pump to firefighting devices. 

1.4.17. Relief valve: A valve that is automatically open to let water flow at the preset pumping pressure in order to control pressure inside the pumping system at a specified value.  

1.4.18. Limit of fire resistance for a construction component determined by the time (in minutes) from the start of a fire resistance test performed in the standard temperature mode to the appearance of one or more consecutive signs of the prescribed limit states at the given component as follows:      

- Loss of load-bearing capacity (load-bearing capacity is designated by the letter “R”);

- Loss of integrity (integrity is designated by the letter “E”);

- Loss of thermal insulation (thermal insulation is designated by the letter “I”).

1.4.19. Fire prevention structure and fire resistance level (sometimes rating, category or class):

Fire prevention structure and fire resistance level are defined and categorized as per QCVN 06:2020/BXD.

1.5. General provisions

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- It is accessible for operation and repair.

- It is protected from any damage caused by fire, explosion, inundation, acts of sabotage and other adverse condition. 

- It is easily reached from outside in case of any fire or explosion emergency that occurs.

1.5.2. Fire pump components must adapt to the environmental conditions under which they are installed, such as humidity, temperature, their elevation compared to sea level, degree of corrosion caused by water and moisture.    

1.5.3. During use, operation, maintenance, repair and replacement of fire pump components must adhere to user manuals and instructions for care and maintenance provided by manufacturers and this Regulation.

2. DESIGN AND INSTALLATION OF STATIONARY PUMPS FOR FIRE PROTECTION:

2.1. Location of a stationary pump for fire protection

2.1.1. A stationary pump for fire protection shall be separate from and independent of other constructions

It must be placed inside a pump house and at the minimum distance of 16 m from other houses and structures (No distance requirement is applied when a stationary pump for fire protection is placed inside a pump house with fire resistance level I or II ; or when there is a fireproof wall between a stationary pump for fire protection and other construction).    

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The pump room or house must be isolated from other room or house by the wall with the minimum fire resistance level REI 150; the fireproof floor with the minimum fire resistance level REI 60; the fireproof door with the minimum fire resistance level EI 70. It is placed on the first floor or the first basement. It is permitted to place the stationary pump for fire protection on any other overhead floor of a building as long as the pump room has an exit access door connecting to or communicating with the buffer zone that encloses the exit staircase through the protected passageway of a fire resistance category 1.    

2.1.3. A stationary pump for fire protection shall be permitted to be located within the same room or house as the potable water or tapwater pump.

2.1.4. The minimum permitted distance between equipment installed in the pump room shall be regulated as follows:

- The distance from the side edge of the foundation where the pump base is built and electric motor to the building wall, and between the bases, shall be 70mm;

- The distance from the pump base edge on the suction pipe side to the wall surface of the opposite building shall be 1 m; from the pump base edge on the electric motor side to the building wall surface shall not be less than the required distance to withdraw the rotor of the electric motor without needing to remove the electric motor from the pump base.

- For fan-cooled diesel engines, the distance from the building wall to the radiator shall not be less than 3 times the height of the radiator of the diesel engine if there is no air release outlet directly venting air from the stationary pump for fire protection. Such distance may be at least 2 m.

- The diesel oil tank bottom shall be higher than the high-pressure pump inlet of the diesel engine.  Where the manufacturer has not yet specified the distance between the diesel oil tank bottom and the high-pressure pump inlet of the diesel engine, the acceptable distance can be 1.2 m. 

- Placing the fuel tank of an internal combustion engine too close to the pump controller without any in-between wall or partition shall not be allowed.     The minimum distance from the fire pump controller and the fuel tank shall be 2 m when there is none of walls or partitions separating them from each other.    

A pump with discharge pipe diameter from 100 mm or more is allowed to be located along the wall or partition without needing to have any passage between the pump and the wall on condition that the distance from wall to the foundation for the pump shall not be less than 200 mm. It is allowed to locate two pumps on the same foundation without the need to arrange a passageway between them provided that there shall be a separate passageway not less than 700mm in width around the foundation.

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2.1.6. Pump room or house shall measure 6 m by 9 m or, if greater, a fire hydrant with the flow rate of 2.5 l/s shall be set in place. Where a pump room or house is used to enclose a diesel engine and diesel fuel tank, it shall be protected by an automatic fire fighting system.

2.1.7. Pump rooms or houses shall be provided with emergency lighting; emergency lights shall be connected to standby power supply to be capable of maintaining the lighting level for a minimum of 3 hours, but not connected to a battery used for starting the pump engine. 

2.1.8. The pump room or pump house shall be provided with a floor drainage system that will prevent it from being inundated.

2.1.9. Provision shall be made for mechanical or natural ventilation of a pump room or pump house. The ventilation system must control the maximum air temperature to 40°C at a stationary pump for fire prevention.

2.1.10. Fire pump engines, fuel supply tanks and controllers shall be safely grounded. Ground wires shall be made of copper wires or sheets. The minimum section of each ground wire for a pump engine shall be 25 mm²; for a fuel supply tank, 10 mm²; and for a controller, 5 mm².

2.1.11. Firefighting water tank

When a water tank serves domestic and fire protection systems in a building, the suction piping system for domestic water supply shall be connected above the level required for fire protection demand. An automatic refill valve and a mechanical refill valve shall be provided separately on each water tank.

2.2. Fire pumps2.2.1. Rules for selection of fire pumps 

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A fire pump shall be selected based on rated capacity and head curve shapes (pump characteristics curves) given by each manufacturer so that the rated capacity for the selected pump shall range from 90% to 140% shown on the pump performance characteristic curves.

When a body of water is placed under the centerline of the discharge pipe and the water supply pressure is not enough to force water into a fire pump, vertical shaftline turbine pumps shall be used.    In this case, use of horizontal-shaft centrifugal pumps shall be prohibited.

2.2.2. Capacity and head of fire pumps

Fire pumps shall possess the capacity and head characteristics satisfying the following requirements and as indicated in the following figure:

- Pumps shall furnish not less than 150% of rated capacity.

- The head on a fire pump at the rated capacity shall not be less than the rated head.

- The shutoff head on a fire pump shall range from a minimum of 101% to 140% of rated head.

- Head at 150% of rated capacity on a fire pump shall not be less than 65% of rated head.

2.2.3. Pump drivers

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2.2.4. Suction pipes of stationary pumps for fire protection

If each pump station has at least 02 pumps, at least 02 suction pipes shall be provided.  Each pipe shall suction a rated maximum amount of firefighting water. If either of the two pipes is damaged or needs being maintained or repaired, pumps can still take suctions from the other suction pipe.   Suction pipes shall be provided with a valve. On water supply pipes, a pressure gauge shall be installed for testing and field inspection service and a drain valve 65 mm shall be provided. When using vertical turbine pumps, the number of suction pipes shall not be regulated.

2.2.5. Start and stop settings of fire pump components

- Stop pressure of a jockey pump equals 115% of the working pressure of the fire pump plus the static pressure at the suction flange of the compensator pump.

- Start pressure of a jockey pump is at least 01 bar lower than its stop pressure.

- Start pressure of the main fire pump is at least 0.5 bar lower than the stop pressure of a jockey pump.

- Start pressure of the standby fire pump is at least 01 bar lower than the start pressure of the duty pump.

- Start pressure of a relief valve or drain valve is from 0.1 to 0.5 bar greater than stop pressure of a jockey pump.   

- Duty pump and standby pump set for automatic starting shall be shut down by operation of a pushbutton at a pump controller. Automatic shutdown after automatic start of fire pumps shall be permitted only if all starting and running causes have been returned to normal, and after a minimum run time set for at least 10 minutes.  Where fire pumps serve as the only water supply for the fire sprinkler or standpipe system of a building, the automatic shutdown of these fire pumps shall not be permitted.   

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Figure: Pump characteristics curves

2.2.6. Series fire pump units

2.2.6.1. Arrangement rules

- No more than three pumps shall be allowed to operate in series as a part of a series fire pump unit.

- No pump in a series pump unit shall be shut down automatically for any condition of suction pressure.

- No pressure-reducing or pressure-regulating valves shall be installed between fire pumps arranged in series as a part of a series fire pump unit.

2.2.6.2. Series fire pump unit performance

- A series fire pump unit (pumps, rotating or driver shafts, controllers and fittings or other accessories) shall perform in compliance with this Regulation as an entire unit

- Within 20 seconds after a demand to start, pumps in series shall supply and maintain a stable discharge pressure (±10 percent) throughout the entire range of operation.

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- The complete series fire pump unit shall be field acceptance tested for proper performance in accordance with the provisions of this Regulation.

2.2.7. Each fire pump shall be provided with automatic air release valve to vent air and air bubbles.

2.2.8. Quantity and capacity of standby pumps

A standby pump with capacity equivalent to the duty pump shall be provided for each fire pump. The number of standby pumps is regulated as follows:

- Where the estimated number of running pumps ranges from one to three, a standby pump shall be provided.

- Where the estimated number of running pumps is at least four, at least 02 standby pumps shall be provided.

2.2.9. Fire pumps shall be marked on their casing according to regulations in force, indicating the basic technical specifications below:

- Pump make/design

- Pump model/type

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- Flow rate

- Pump net pressure (rated pressure at 100%)

- Pump net pressure at 150% of rated flow

- Pump net shutoff (churn) pressure (0 flow)

- Rated maximum capacity of the fire pump engine

- Rated speed

- Manufacturer

- Manufacturer's address

- Year of manufacture

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2.3.1. Jockey pump capacity

The calculated capacity of a jockey pump shall not be less than 1% of the rated capacity of a fire pump.

2.3.2. Pressure maintenance pumps shall be capable of maintaining pressure at the discharge port inside the fire protection system so that such maintained pressure is 0.3 – 0.8 bar greater than the system design pressure. 

2.3.3. A check valve shall be attached to the pump at the discharge port.

2.3.4. Where the total of the pump shutoff (churn) pressure and the maximum suction pressure exceeds the working pressure of all system equipment, a relief valve shall be installed on the pump discharge pipe of the jockey pump and ahead of a check valve.

2.3.5. Either duty (main or primary) pumps or standby pumps shall not be used to maintain the system pressure.

2.3.6. For fire pumps automatically actuated by signal of a pressure switch or pressure sensor, when the pressure switch is installed, the stable and accurate starting and stopping of pressure maintenance pumps and fire pumps shall be required.   

2.3.7. The minimum nominal size of the pressure sensing line shall be 15 mm. The pressure sensing line shall sense the discharge pressure behind a check valve in each pump. Pressure sensing lines shall be of stainless steel or copper material.

2.3.8. An isolation valve and pressure gauge should be installed at the end of the water supply piping to facilitate the testing and calibration of pump start pressure. 

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2.3.10. Pressure maintenance pumps shall be marked on their casing according to regulations in force, indicating the basic technical specifications below:

- Pump make

- Pump model/type

- Serial number

- Maximum pressure

- Flow rate

- Manufacturer

- Manufacturer's address

- Year of manufacture

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2.4.1. Electric motors

2.4.1.1. Electric drive for pumps can be either an asynchronous motor or a three-phase synchronous motor.

2.4.1.2. The value of locked rotor current for motors corresponding with the rated capacity shall not exceed the permissible value specified in Table 2.4.1.2

Table 2.4.1.2. Motor capacity and locked motor current motor designation

Rated motor capacity

Locked rotor current three-phase 380V at 50Hz (A)

Hp

KW

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20

1-1/2

1.12

27

2

1.49

34

3

2.24

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5

3.72

61

7-1/2

5.58

84

10

7.46

107

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11.19

154

20

14.91

194

25

18.64

243

30

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289

40

29.83

387

50

37.28

482

60

44.74

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75

55.93

722

100

74.57

965

125

93.21

1207

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111.85

1441

200

149.14

1927

250

186.42

2534

300

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3026

350

260.99

3542

400

298.28

4046

450

335.56

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500

372.85

5069

2.4.1.3. The rated capacity of electric drives for pumps shall be the capacity rated for continuous duty.   The motor capacity in horsepower shall be such that the maximum motor current in any phase under any condition of rated pump head and capacity curves and voltage unbalance shall not exceed 115% of the motor-rated full-load current. 

2.4.1.4. The minimum motor capacity shall be greater than or equal to the capacity of pumps operating at 150 percent of the rated pump capacity.  Any time the capacity of electric drive units for fire pumps shall not be less than 10% of the rated capacity shown in the nameplate. The drive capacity shall not be greater than 1.15 times the rated capacity corresponding to the rating speed of pump.  

2.4.1.5. Current limits

The motor capacity shall be such that the maximum motor current without any phase failure occurring under any condition of pump load and balanced voltage shall not exceed the motor-rated full-load current multiplied by the service factor.  The maximum service factor at which a motor shall be used is 1.15.

2.4.1.6. Power sources and protective devices

2.4.1.6.1. Each electric motor-driven pump shall be supplied from at least two power sources, including main power source and standby power source. Main fire pumps shall be permitted to connect to a power source if a standby pump is a diesel engine-driven pump.

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2.4.1.6.3. Fault interruption means

- No ground fault interruption means shall be installed in any fire pump control or power circuit. 

- No arc fault interruption means shall be installed in any fire pump control or power circuit.   

2.4.1.6.4. One disconnecting means and associated overcurrent protection device shall be installed in the power supply to the fire pump controller.

2.4.1.6.5. Voltage drop

- The voltage at the controller line terminals shall not drop more than 15 percent below normal (controller-rated voltage) under motor-starting conditions, except in case of an emergency start performed by mechanically closing the motor-circuit switch mechanism.

- The voltage at the contactor(s) load terminals to which the motor is connected shall not drop more than 5 percent below the voltage rating of the motor when the motor is operating at 115 percent of the full-load current rating of the motor.

2.4.1.6.6. Wiring from the controller(s) to the pump motor shall be in rigid metal conduit, intermediate metal conduit, electrical metallic tubing, liquid-tight flexible metal conduit, or liquid‐tight flexible nonmetallic conduit and cable with an impervious covering.

2.4.1.6.7. Electrical connections at motor terminal boxes shall be made with a means of connection listed by manufacturers. Twist-on type and soldered wire connectors shall not be permitted to be used for this purpose.

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- Motor name and type

- Model/frame size number, serial number

- Manufacturer’s name

- Manufacturer's address

- Make year

- Horsepower

- Rated speed

- Rated voltage/phase/frequency

- Full-load current

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2.4.2. Diesel engines

2.4.2.1. Diesel engines for fire pump drive shall be of the four-stroke compression ignition type.

2.4.2.2. Engines shall have a 4-hour minimum horsepower rating equal to or greater than the brake horsepower required to drive the pump at its rated speed under any pump load conditions.

2.4.2.3. The brake horsepower rating of a diesel engine in the continuous duty or service mode shall not be less than 110% of the maximum brake horsepower required to drive a pump under any pump load conditions.

2.4.2.4. Diesel engines shall be provided with a speed control governor capable of regulating engine speed within a range of 10 percent between shutoff and maximum pump brake horsepower. Shutoff and full-load speed. The governor shall be field adjustable to maintain the engine operation at the rated speed.

2.4.2.5. Diesel engines shall be equipped with an engine overspeed shutdown device when the engine speed ranges from 20% above the rated engine speed and shall be reset by the manual restart mechanism. An overspeed trouble signal shall be indicated to the automatic engine controller such that the controller cannot be reset until the overspeed shutdown device is manually reset to normal operating position.

2.4.2.6. Diesel engines shall be provided with instrument panels (engine junction boxes) and measuring instruments, including the following parts and fittings:

- A tachometer shall be provided to indicate engine speed measured in revolutions per minute of the engine. The tachometer shall be the totalizing type or an hour meter to record total time of engine operation.

- An oil pressure gauge provided to indicate lubricating oil pressure.

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- Manual pump start and stop switches or pushbuttons used for local demand.

- A connection to the diesel engine-driven fire pump controller. Numbers of all connecting wires in an engine junction box and in the pump controller that are required to correspond.  

- A connection to engine speed, oil pressure and coolant temperature sensing devices.

- A measuring and control circuit diagram.

2.4.2.7. All wiring on the engine shall be harnessed on a continuous-duty basis. Terminals used for connecting wires in an engine junction box shall be numbered according to the control circuit diagram. Sensor wiring, electrical conduits or tubing and binding elements shall be made of fire-rated materials.

2.4.2.8. Each engine shall be provided with two main contactors supplying battery current to the diesel engine cranking motor that, in addition to battery isolation by automatic control wiring, can be capable of manually closing emergency start circuit in the event of any breakdown or failure in the engine junction box or controller.      

2.4.2.9. Diesel engines shall be provided with a relay to signal engine running and cranking. Power for this signal shall be taken from a source other than the engine generator or alternator.

2.4.2.10. Two battery units shall be provided to start an engine. Each battery unit shall have its power capacity which is twice the rated power output to be sufficient to maintain cranking during six consecutive cycles of 15 seconds of cranking and 15 seconds of rest. Batteries shall be supported by metal rack at an elevation of 305 mm above the floor level.  Batteries shall be capable of carrying its full rated load within room ambient temperature range between 4.5°C and 80°C.

2.4.2.11. Each battery unit shall be provided with a voltmeter, ammeter, and a separate visible indicator or lamp indicating battery charger and battery failure. Metering results shall not vary by greater than 5%.

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- The charger shall be a type that automatically reduces the charging rate to less than 500 mA when the battery reaches a full charge condition.

- The battery charger shall be capable of delivering energy into a fully discharged battery to restore to the fully charged battery in such a manner that it will not damage the battery.

- The battery charger shall be capable of indicating the charging current output on a control panel and the failure or damage status of the charger.

- The charger shall be designed such that it will not be damaged or blow fuses during the cranking cycle of the engine when operated by an automatic or manual controller.

2.4.2.13. Diesel engines may be provided with the following cooling system types:

- A heat exchanger type that includes a circulating pump driven by the engine mechanical shaft, a heat exchanger, and an engine jacket temperature regulating device.

- A radiator type that includes a circulating pump driven by the engine mechanical shaft, a radiator, an engine jacket temperature regulating device, and an engine-driven fan for providing positive movement of air through the radiator.

2.4.2.14. The fan used for dissipating the heat from a radiator of a diesel engine shall be driven by the engine mechanical shaft. The fan shall be provided with a fan guard and drive belt.

2.4.2.15. The radiator shall be designed to limit the engine temperature, even when an inlet air temperature is 49°C, in a manner that limits temperature to the temperature permitted by the manufacturer, but to 80°C in all instances. Total loss in pressure of air moving through the radiator and discharge ventilators (if any) shall not exceed 13 mm water column. The exhaust outlet shall be extended to outdoors.

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2.4.2.17. Fuel supply tank(s) shall have a capacity at least equal to 1 gal per hp (5.07 L per kW), plus 5 percent volume for expansion and 5 percent volume for sump, which is calculated according to the brake horsepower required to drive the pump. The fuel supply tank and fuel shall be reserved exclusively for the fire pump diesel engine. There shall be a separate fuel supply tank for each engine.

Tanks shall be constructed to ensure that the fuel supply piping connection to the engine is not located at the point lower than the fuel level switch connection. 

Each fuel supply tank shall include but not limited to the followings: a vent valve; a fuel piping; a protection cover; drain valve; fuel level indicator. An electromagnetic type valve used to control fuel supply to the engine shall be provided with the hand valve open available for use in case of damage or failure.    

2.4.2.18. Below are diesel engine start methods:

- Cranking motor

- Compressed air

- A combination of both cranking motor and compressed air

2.4.2.19. Engine exhaust piping

Each pump engine shall have an independent exhaust pipe which is not any smaller in diameter than the engine exhaust outlet. The exhaust pipe shall be covered with high temperature insulation or otherwise guarded to protect personnel from injury.

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2.4.2.20. Each diesel engine shall be marked on its jacket according to regulations in force, indicating the basic technical specifications below:

- Engine model/serial number

- Manufacturer’s name

- Manufacturer's address

- Year of manufacture

- Horsepower

- Rated battery voltage

- Rated speed

2.5. Fire pump controllers

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2.5.1.1. Each pump shall be controlled by an independent controller that is designed to start the pump automatically and manually. Electric motor-driven fire pump control equipment and pressure maintenance pump control equipment can be located inside the same control panel cabinet. However, this arrangement method shall not be permitted to apply to main fire pump control equipment and jockey pump control equipment.   When an electric motor-driven fire pump controller and a pressure maintenance pump controller are located on the same controller enclosure, magnetic pump start attempts shall be independent. Each of them shall be placed in separate spaces inside that controller enclosure 

2.5.1.2. A comprehensive instruction manual fully describe operations of a controller shall be provided and attached onto the panel at a conspicuous position.     

2.5.1.3. Fire pump control panel shall be capable of starting a fire pump from the pump stop status to the full load level within 30 seconds after receiving pump start signals. On each control panel, connecting ports or terminals shall be provided to indicate the running state and remotely control the pump.

2.5.1.4. All controller devices, fittings and accessories shall be mounted on metal enclosure painted in red. They shall be mounted rigidly on the control panel, but can be removed, installed or replaced easily. Where the controller is located outside or where special environments exist, suitably rated enclosures shall be used.  All electric devices of a controller shall be suitable for use in environments where they are installed, and any place where the nominal 95% humidity exists.

2.5.2. Electric-driven fire pump controllers

2.5.2.1. Type of the starting circuitry is selected according to the output of power supply to the fire pump. One of the following starting circuits shall be selected to start a motor driving the fire pump as follows: 

- Direct-on-line (DOL) start

- Autotransformer start

- Wye - Delta open or closed start

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- Soft Start

2.5.2.2. Starting methods of an electric-driven pump controller: An electric-driven pump controller shall provide three starting methods:

- Automatic starting;

- Starting by operation of a pushbutton on the outside of the controller enclosure;

- Emergency starting performed by mechanically closing the motor-circuit switch mechanism. Motor-circuit switching equipment shall provide for nonautomatic operation of motors and be independent of electric control circuits, magnets or equivalent devices and independent of the pressure-activated control switch.

2.5.2.3. Control, monitoring or supervisory devices mentioned below shall be mounted on the controller, including:

- Pump start, stop, indicator light testing or inspection pushbuttons.

- Indicators, timers or liquid-crystal display (LCD) panels, indicating the following information: Availability of power supply; source power failure (power loss, phase differentiation, phase loss or failure); pump running or stopping; dismissed or failed automatic start operations; phase voltage and system pressure.

- Handle or lever used for closing or cutting off power supply to the controller. An isolating switch shall be installed to permit the opening of the controller only when this isolating switch trips in an open position.

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2.5.2.4. A control panel cabinet shall be designed to be suitable for the short-circuit current occurring at the at the line terminals of the controller, and shall be clearly marked with the Vietnamese legend saying that the maximum short-circuit current symmetrical at a specific voltage rating.

2.5.2.5. Connections and wiring in a controller shall satisfy the following requirements:

- All busbars and connections of the controller shall be readily accessible for maintenance work, where necessary, without requiring any disconnection of the external circuit conductors.

- Gauges or meters shall be used for line voltage and current readings without any disconnection of conductors or busbars inside the controller.

- Except conductors that are in a circuit only during the motor starting period, conductors and busbars inside the controller shall be sized to be capable of supplying power to the motor on a continuous-duty basis at the full load state.

2.5.2.6. The rated current of an isolating switch shall not be less than 115% of the rated full-load current of the electric motor.

2.5.2.7. Each electric motor shall be protected by a circuit breaker (disconnecting means) and connected directly to the output port of the isolating switch. The circuit breaker shall have the following technical specifications:

- Availability of the manual-trip handle.

- Trip free of the handle.

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- Overcurrent-sensing elements of the nonthermal type.

- Instantaneous overcurrent protection.

- Capability of allowing normal and emergency starting and running of the motor without tripping.

- An instantaneous trip setting of not more than 20 times the full-load current.

2.5.2.8. An electric motor overcurrent protective device must be installed for the controller. The overcurrent protective device shall be required between the isolating switch and the fire pump motor, and possess the following characteristics:

- For a squirrel-cage:

+ The device shall be capable of adjusting the stripping delay time that ranges between 8 seconds and 20 seconds at locked rotor current.

+ The device shall be capable of adjusting and setting the tripping current which is at least 300 percent of the motor full-load current.

- For a direct-current motor:

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+ The device shall be capable of calibrating and setting the tripping current which equals at least 400 percent of the motor full-load current.

+ There shall be visual elements and gradations clearly indicated on the device that proper settings have been made.

+ It shall be possible to reset the device for resumption of motor operation immediately after tripping activation.

2.5.2.9. The contactor of the motor controller shall be of the magnetic actuation type with the rated continuous-duty current for main magnetic operations that equals at least 115% of the rated motor current. When magnetically operated on a continuous duty basis in the motor starting mode, starting contactors shall provide the rated current symmetrical with the working current provided through magnetic operation in the corresponding duty mode.

2.5.2.10. For reduced-voltage motor controllers, the time it takes for the motor to reach the rated speed from the start shall not exceed 10 seconds.

2.5.2.11. For controllers of up to 600 V, the operating coil(s) for any motor contactor(s) shall be supplied directly from the main power voltage and not through a transformer.

2.5.2.12. Undervoltage, phase failure, incorrect frequency, or other sensors shall not be provided to deliver signals for the fire pump to stop.

2.5.3. Diesel engine-driven fire pump controllers

- Controllers shall be located as close as is practical to the engines they control and shall be within sight of the engines.

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- Controllers shall be located near the pump in an easy-to-operate position and not less than 0.3 m above the floor level.

- There are two methods of operation of the diesel fire pump controller, including: Automatic operation and operation of a pushbutton on the outside of the controller enclosure.

- A controller shall display the charging current, voltage of each battery, operating mode, system pressure and errors or failure in engine overspeed, charging current, voltage of each battery.

2.5.4. Each fire pump controller shall be marked on its enclosure according to regulations in force, indicating the basic technical specifications below:

- Name

- Manufacturer’s name

- Manufacturer's address

- Year of manufacture

2.6. Fire pump fittings and accessories

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2.6.1.1. The discharge components shall consist of pipe, valves, and fittings extending from the pump discharge flange to the system side of the discharge valve of fire prevention systems.

2.6.1.2. The size of pump discharge pipe and fittings shall not be less than that given in Section A1 of Appendix A.

2.6.1.3. A check valve or backflow preventer shall be installed in the pump discharge assembly. A gate or butterfly valve shall be installed on the discharge pipe immediately behind the pump discharge check valve. Where pumps are installed in series, a butterfly valve shall not be installed between pumps.

2.6.2. Suction pipes

2.6.2.1. The suction components shall consist of all piping, valves, and fittings from the pump suction flange to the connection to the water supply that feeds water to the pump.

2.6.2.2. Where pumps are installed in series, the suction pipe for the subsequent pump(s) shall begin at the system side of the discharge valve of the previous pump.

2.6.2.3. Suction size

The size of the suction pipe for a single pump or of the suction header pipe for multiple pumps designed to operate together shall be such that, with all pumps operating at maximum flow, the gauge pressure at the pump suction flanges shall be 0 psi (0 bar) or higher. Where the supply is a suction tank with its base at or above the same elevation as the pump, the gauge pressure at the pump suction flange shall be permitted to drop to –3 psi (−0.2 bar) with the lowest water level.

The size of that portion of the suction pipe located within 10 pipe diameters upstream of the pump suction flange shall be not less than that specified in Section A1 of Appendix A.

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- Valves in suction pipes shall be of OS&Y gate valve type. No control valve other than a listed OS&Y valve and no other devices shall be installed in the suction pipe within 15.3 m of the pump suction flange.

2.6.2.5. Suction pipe installation

- Suction pipe shall be laid carefully to avoid air leaks and air pockets.

- Elbows and Tees

Elbows and tees with a centerline plane parallel to a horizontal split-case pump shaft shall not be permitted to exist in suction pipes. The aforesaid requirement shall not apply to elbows and tees with a centerline plane parallel to a horizontal split-case pump shaft where the distance between the flanges of the pump suction intake and the elbow and tee is greater than 10 times the suction pipe diameter.

Elbows and tees with a centerline plane perpendicular to the horizontal split-case pump shaft shall be permitted at any location in the pump suction intake.

2.6.2.6. Suction Screening

Mesh screens shall be brass, copper, Monel, stainless steel, or other equivalent corrosion-resistant metallic material wire screen of 0.50 in. (12.7 mm) maximum mesh.

2.6.2.7. Valve Supervision

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2.6.3. Pressure gauges

2.6.3.1. Discharge pressure gauge

Each pump shall be fitted with a separate pressure gauge at the pump flange or near the pump side on the discharge pipe which, however, is installed in front of that pump's check valve and constrained by a ball drip valve.

A gauge shall include a dial not less than 89 mm in diameter. The dial shall indicate the maximum pressure to at least twice the rated working pressure of the pump but not less than 200 psi (13.8 bar).

2.6.3.2. Suction pressure gauge

The pressure gauge shall be mounted on the pump flange or on the suction line close to the pump side and controlled by a ball drip valve. The face of the dial shall clearly indicate a unit of pressure measurement. The suction pressure gauge shall provide the pre-zero graduated pressure range.

Where the minimum pump suction pressure is below 20 psi (1.3 bar) under any flow condition, the suction gauge shall be a compound pressure and vacuum gauge.

A gauge shall include a dial not less than 89 mm in diameter. The dial shall indicate the maximum pressure to at least twice the rated working pressure of the pump but not less than 100 psi (6.9 bar).

2.6.4. Casing relief valve

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All electric pump(s) shall be provided with casing relief valves; installed on the discharge port of the pump casing or the discharge side of the pump before the discharge check valve. The aforesaid requirements shall not apply to diesel engine driven pumps for which engine cooling water is taken from the pump discharge.

Each pump shall be provided with one casing relief valve independent of the system relief valve.

Casing relief valves shall have a service rating corresponding with the pump pressure and be capable of setting the discharge pressure.

The outlet line of the pump casing relief valve shall be kept separate and independent, and provide discharge into a visible open wastewater system. Where water discharged from the casing relief valve is returned back to the storage tank, such water flowing in the pipe shall be visible.

The casing relief valve shall have a nominal size of 19 mm for pumps with a rated capacity not exceeding 9,462 L/min (2500 gpm) and have a nominal size of 25 mm for pumps with a rated capacity of 11,355 l/min to 18,925 l/min.

2.6.5. Pump relief valve

2.6.5.1. Where a diesel engine fire pump is installed and where a total of the net rated shutoff (churn) pressure plus the maximum static suction pressure exceeds the pressure for which the system components are rated, a pressure relief valve shall be installed.

2.6.5.2. Relief valve size

The relief valve shall be permitted to be sized hydraulically to discharge sufficient water to prevent the pump discharge pressure from exceeding the pressure rating of the system components, but such size shall not be less than that given in Appendix A.

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2.6.5.4. Water discharge from the pump relief valve shall be readily visible or easily detectable by the pump operator. Stop valves shall not be installed in the pipe before and after pump relief valves.

2.6.6. Flow test pipes and devices

2.6.6.1. Piping of flow testing devices or fixed nozzles shall be installed to determine if the pump is operating within its design conditions. Metering devices or fixed nozzles shall be capable of water flow of not less than 175 percent of rated pump capacity.

2.6.6.2. During the test run of a pump, it shall be permitted to discharge water into a tank or any locations that do not affect pump components. When discharging back into a tank, the discharge nozzle(s) or pipe shall be located at a point as far from the pump suction as is necessary to prevent the pump from drafting air introduced by the discharge of test water into the tank.

2.6.6.3. All of the meter system piping shall be sized as specified by the meter manufacturer but not less than the meter device sizes shown in Appendix A.

2.6.6.4. Hose valves: The number and size of hose valves used for pump testing shall be as specified in Appendix A. A gate or butterfly valve shall be installed in the pipeline to the hose valve header.

2.6.7. Automatic air release valve: This valve shall be located at the highest point of the pump casing to vent air completely.

3. FIRE PUMP TEST RUN AND ACCEPTANCE TESTING

3.1. Fire pump test run and acceptance testing

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3.1.1.1. The fire pump shall perform at minimum, rated, and peak loads without objectionable overheating of any component.

3.1.1.2. Vibrations of the fire pump assembly shall not be of a magnitude to pose potential damage to any fire pump component.

3.1.1.3. The minimum, rated, and peak flow of the fire pump shall be determined by controlling the quantity of discharge water by using approved test devices.

3.1.1.4. Where simultaneous operation of multiple pumps is required, the acceptance test shall include a flow test of all pumps operating simultaneously.

3.1.2. Variable speed pressure limiting control

3.1.2.1. Variable speed pumps shall be tested at no flow, 25 percent, 50 percent, 75 percent, 100 percent, 125 percent, and 150 percent of rated load in the variable speed mode.

Variable speed pumps shall also be tested at minimum, rated, and peak loads, with the fire pump operating at rated speed.

3.1.2.2. The fire protection system shall be isolated and the pressure relief valve closed for the rated speed tests required in 3.1.2.1.

3.1.2.3. The fire protection system shall be open and the relief valve set for the variable speed tests required in 3.1.2.1.

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3.1.4. Phase Reversal Test For electric motors, a test shall be performed to ensure that there is not a phase reversal condition in either the normal power supply configuration or from the alternate power supply (where provided).

3.1.5. Alternate power supply

3.1.5.1. On installations with an alternate source of power and an automatic transfer switch, loss of primary source shall be simulated and transfer shall occur while the pump is operating at peak load.

3.1.5.2. Transfer from normal to alternate source and retransfer from alternate to normal source shall not cause opening of overcurrent protection devices in either line.

3.1.5.3. At least half of the manual and automatic operations of 3.2.2 shall be performed with the fire pump connected to the alternate source.

3.1.6. Measurement Procedure

3.1.6.1. The quantity of water discharging from the fire pump assembly shall be determined and stabilized.

3.1.6.2. Immediately thereafter, the operating conditions of the fire pump and driver shall be measured.

3.1.7. Field Retest Results

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3.1.7.2. The field retest results shall meet or exceed the performance characteristics as indicated on the pump nameplate, and the results shall be within the accuracy limits of field testing as stated elsewhere in this standard.

3.2. Fire pump controller acceptance test

3.2.1. Fire pump controllers shall be tested in accordance with the manufacturer's recommended test procedure.

3.2.2. As a minimum, no fewer than six automatic and six manual operations shall be performed during the acceptance test.

3.2.3. An electric-driven fire pump shall be operated for a period of at least 5 minutes at full speed during each of the operations required in 3.1.1.

3.2.4. The automatic operation sequence of the controller shall start the pump from all provided starting features. This sequence shall include pressure switches, sensors or remote starting signals. Tests of engine-driven controllers shall be divided between both sets of batteries. The fire pump shall be started once from each power service and run for a minimum of 5 minutes.

3.3. Preparation of testing, acceptance testing records and reports, manuals for operation and maintenance of fire pump components

3.3.1. Upon completion of the acceptance testing of stationary pumps for fire prevention, an acceptance testing dossier shall be made as follows:

- Fire pump testing, operation and acceptance testing reports.

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- Record of documentation and instruction manuals for operation, maintenance and repair of fire pump components. 

3.3.2. Fire pump supplying and installing units must provide record of documentation and instruction manuals for all main components of stationary pumps for fire prevention as follows:

3.3.2.1. The manual shall contain the following:

- A detailed explanation of the operation of the component;

- Instructions for routine maintenance;

- Detailed instructions concerning repairs

- Parts list and parts identification;

- Schematic electrical drawings of controller, transfer switch, and fire pump control panels;

- List of recommended spare parts and lubricants.

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4. FIRE PUMP TESTING, FIELD INSPECTION AND MAINTENANCE

4.1. Weekly fire pump testing and maintenance

4.1.1. On-site Inspection shall be conducted as follows:

4.1.1.1. Status of pump house

- Temperature of a diesel pump room without an engine heater is not lower than 4.4°C.

- Vent duct is free of obstructions.

4.1.1.2. Status of pump system

- Bypass valve, pump discharge and suction head is open completely.

- No visible pipe leakage occurs.

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- System line pressure reading is within normal rating.

- Reserve supply tank is full.

- Suction strain or wet pit screen is not obstructed and set in place.

4.1.1.3. Status of power system

- Controller alarm (power available) is on.

- Transfer switch common alarm is on.

- (Emergency) standby power supply isolation switch is in closed position.

- Phase reversal alarm is off, or phase transition common alarm is on.

- Tank level shown in the vertical shaft turbine sight glass is within normal rating.

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- Fuel tank is two-thirds filled.

- Electronic Control Module (ECM) selector switch is positioned to the alternate ECM position.

- Battery voltage (volt) reading is within normal rating.

- Battery charge current (amp) reading is within normal rating.

- Battery alarm is on; or battery failure alarm is off.

- All alarms are off.

- Run timer (running period timer) is active.

- Fuel level in the right-angle gear drive is within normal rating.

- Engine jacket fuel level is within normal rating.

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- Battery electrolyte level is within normal rating.

- Battery case is not corroded.

4.1.2. Testing shall be conducted as follows:

4.1.2.1. Testing of automatically- or manually-started offload operation of fire pumps

- At least 10 minutes/test/week for electric pumps.

- At least 30 minutes/test/week for diesel pumps.

4.1.2.2. While the pump is running, appropriate visual monitoring or calibration actions mentioned hereunder shall be as follows

- Procedures applied to the pump system:

Record discharge pressure and suction pressure.

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Reposition gaskets where required.

Check for unusual vibrations or noises.

Check for working temperature of pump enclosure, bearing or casing.

Record pump start pressure

- Procedures applied to the electrical system:

Monitor the time required for acceleration to full speed.

Record the time required for the controller to stop at the first step (in case of starting in the derated voltage or current state)

Record pump run time after start-up (with automatic stop controller)

- Procedures applied to the diesel engine:

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Monitor the time required for the engine to reach the rated operating speed.

Periodically monitor fuel tank pressure readings, speed meter values, water, and other fuel temperature readings while the engine is running.

Record any abnormalities.

Check cool water flow in the heat exchanger.

4.2. Annual fire pump testing, field inspection and maintenance

4.2.1. A fire pump cluster shall be tested based on minimum, rated, and peak flow determined by controlling the quantity of discharge water by using approved test devices.

4.2.2. Appropriate visual supervision, measurement and calibration service mentioned hereunder shall be conducted while a fire pump is running and loading water with the corresponding discharge condition as follows:

4.2.2.1. Field inspection of non-flow condition (maximum threshold): Check whether the circulation relief valves and pressure-reducing valves (where installed) are working properly within 0.5 hour.

4.2.2.2. Field inspection of each water flow condition: Record the voltage and amperage of the electric motor; record the pump speed; record the simultaneous (relative) readings of pressure and suction pressure, and pump discharge flow.

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4.2.2.4. For installations with an automatic transfer switch, the following test shall be carried out to ensure that the overcurrent protective device (such as a fuse or circuit breaker) is not open:

- Simulate an electrical failure event while the pump is operating under maximum load condition;

- Make sure the transfer switch can transfer to an alternate power source;

- Ensure the pump continues to operate under maximum load condition;

- End the failure simulation and check to ensure the pump reconnects to common power source after delay time.

4.2.2.5. Simulating an alarm event by activating the alarm circuitry at the alarm sensing locations, and locally or remotely supervising operation of all alarm devices.

4.3. Field retest results

4.3.1. Pump performance retest results

The fire pump cluster remains in proper working condition if one of the following conditions is satisfied during testing:

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- Field retest results shall meet the performance characteristics as indicated on the pump nameplate.

If the pump pressure drops by more than 5% as indicated in the original acceptance test characteristics curves where no calibration is applied, or as indicated in the nameplate, the cause of the performance decrease should be investigated.

4.3.2. Pump motor/engine performance retest results

Where amperage and voltage readings do not exceed the product of rated voltage and rated full-load amperage multiplied by the rated motor service factor, such performance is deemed acceptable. Motor voltage reading 5% below or 10% above rated voltage (marked on the nameplate), as a maximum, will be deemed acceptable.

4.3.3. Maintenance of a stationary pump for fire protection

A routine maintenance plan must be developed for all equipment and components of the stationary pump for fire prevention according to the manufacturer's instructions. If the manufacturer does not give any instructions on routine maintenance, Annex B issued with this Regulation shall be followed.

The project management unit shall create a record of documentation and log to monitor the periodic inspection of maintenance and operation of the stationary pump for fire prevention as prescribed.

5. MANAGEMENT REGULATIONS

5.1. The project owner shall have the following responsibilities: Formulate a construction design plan; take charge of construction; inspect and supervise construction in accordance with the approved fire prevention design; carry out the required inspection and maintenance of stationary pumps for fire prevention according to regulations. Also, retain full records and results of the periodic inspection of maintenance and operation for submission to the competent authority where required.

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5.3. Stationary pumps for fire prevention shall obtain declarations for conformity and conformance to this Regulation according to Approach 8 "Testing of all products and goods" referred to in the Circular No. 28/2012/TT-BKHCN dated 12 December 2012 of the Ministry of Science and Technology, providing for standard conformity, regulation conformity declaration, and methods of assessing conformity with technical standards and regulations, and the Circular No. 02/2017/TT-BKHCN dated March 31, 2017 of the Ministry of Science and Technology, amending and supplementing a number of Articles of the Circular No. 28/2012/TT-BKHCN dated December 12, 2012 of the Ministry of Science and Technology, regulating the declaration of conformity with technical standards, declaration of conformance to technical regulations and methods of assessment of conformity with technical standards and regulations.

5.4. Central Department of Fire Safety, Firefighting, and Rescue and provincial Police Departments serve as agencies receiving records of inspection of fire prevention means and equipment in accordance with law.

5.5. Government agencies in charge of construction shall be responsible for inspecting and supervising application of this Regulation to design, review of design, construction, acceptance testing, commissioning and maintenance of buildings and construction structures in accordance with applicable law.

5.6. Transfer provisions

5.6.1. Stationary pumps for fire protection that have been installed, acceptance tested and put into use before the effective date of this Regulation shall not be required to apply the provisions of Section 2 and Section 3 of this Regulation.

5.6.2. If any projects for development of stationary pumps for fire protection that have been approved by Fire Safety Police, but have not been built or installed, do not conform to regulations laid down herein, based on the current context, project owners can apply solutions to adapting them to this Regulation under the guidance of Fire Safety Police before construction, installation and acceptance test in accordance with regulations.

6. IMPLEMENTATION

6.1. Heads of related entities shall be responsible for communicating this Regulation to their affiliates and staff members so that it shall be implemented;

6.2. In the course of implementation hereof, should there be any issue or problem that arises, agencies, entities and persons involved must report to the Ministry of Public Security (via Central Department of Fire Safety, Firefighting, and Rescue) for timely instructions.

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APPENDIX A

Chart of minimum sizes of fire pump components and fittings or accessories

Pump rating (l/min.)

Minimum pipe sizes (Nominal) (mm)

Suction

Discharge

Relief valve

Relief valve discharge

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...

...

Number and size of hose valves

Hose header supply

95

189

379

568

757

25

38

...

...

...

65

75

25

32

50

65

75

19

32

...

...

...

50

50

25

38

50

65

65

32

50

...

...

...

75

75

1 - 38

1 - 38

1 - 65

1 - 65

1 - 65

25

38

...

...

...

65

65

946

1,136

1,514

1,703

1,892

85

100

...

...

...

125

125

75

100

100

125

125

50

65

...

...

...

75

75

65

85

125

125

125

85

85

...

...

...

100

125

1 - 65

1 - 65

2 - 65

2 - 65

2 - 65

75

75

...

...

...

100

100

2,839

3,785

4,731

5,677

7,570

150

200

...

...

...

200

250

150

150

200

200

250

100

100

...

...

...

150

150

150

200

200

200

250

125

150

...

...

...

200

200

3 - 65

4 - 65

6 - 65

6 - 65

6 - 65

150

150

...

...

...

200

200

9,462

11,355

13,247

15,140

17,032

18,925

250

...

...

...

300

350

400

400

250

300

300

300

350

...

...

...

150

200

200

200

200

200

250

300

300

...

...

...

350

350

200

200

250

250

250

250

8 - 65

...

...

...

12 - 65

16 - 65

16 - 65

20 - 65

250

250

300

300

300

...

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APPENDIX B

Fire pump testing, field inspection and maintenance

No.

Item description

Inspected on site

Tested by metering/measuring  devices

Replaced

Cleaned

...

...

...

Maintenance frequency

A

Pump System

...

...

...

Lubricate pump bearings

X

Every 12 months

2

Check pump shaft end play

...

...

...

X

Every 12 months

3

Check accuracy of pressure gauges and sensors

X

...

...

...

Every 12 months (changed or calibrated in case of 5% difference that occurs)

4

Check pump coupling alignment

X

...

...

...

Every 12 months

5

Wet pit suction screens

X

X

After each pump run

...

...

...

Mechanical Transmission

1

Lubricate coupling

...

...

...

X

Every 12 months

2

Lubricate right-angle gear drive

...

...

...

Every 12 months

C

Electrical System

...

...

...

1

Exercise isolating switch and circuit breaker

X

Every month

...

...

...

Trip circuit breaker

X

Every 12 months

3

Operate manual starting means (electrical)

...

...

...

X

Every 06 months

4

Inspect and operate emergency manual starting means (without power)

X

...

...

...

X

Every 12 months

5

Tighten electrical connections as necessary

X

...

...

...

Every 12 months

6

Lubricate mechanical moving parts (excluding starters and relays)

X

Every 12 months

...

...

...

Calibrate pressure switch settings

X

Every 12 months

8

Grease motor bearings

...

...

...

X

Every 12 months

D

Diesel Engine System

...

...

...

1

Fuels

...

...

...

-

Tank level

X

X

Every week

...

...

...

Tank float switch

X

X

Every week

-

Solenoids valve operation

...

...

...

X

Every week

-

Strainer, filter, or dirt leg, or combination thereof

...

...

...

X

Every 03 months

-

Water and foreign material in tank

X

...

...

...

Every 12 months

-

Water in system

X

X

Every week

...

...

...

Flexible hoses and connectors

X

Every week

-

Tank vents and overflow piping unobstructed

...

...

...

X

X

Every year

-

Piping

X

...

...

...

Every 12 months

2

Lubrication System

...

...

...

-

Oil level

X

X

Every week

...

...

...

Oil change

X

Every 50 working hours

-

Oil filter

...

...

...

X

Every 50 working hours or 12 months

-

Lube oil heater

X

...

...

...

Every week

-

Crankcase breather

X

X

X

...

...

...

Every 03 months

3

Cooling System

...

...

...

Level

X

X

Every week

-

Adequate cooling water to heat exchanger

...

...

...

X

Every week

-

Rod out heat exchanger

...

...

...

X

Every 12 months

-

Water pump

X

...

...

...

Every week

-

Condition of flexible hoses and connections

X

X

Every week

...

...

...

Jacket water heater

X

Every week

-

Inspect duct work, clean louvers (combustion air)

...

...

...

X

X

Every 12 months

-

Water strainer

...

...

...

X

Every 03 months

4

Exhaust System

...

...

...

-

Leakage

X

X

Every week

...

...

...

Drain condensate trap

X

Every week

-

Insulation and fire hazards

...

...

...