The pump assembly auxiliary equipment shall includethe following: h f ll i Pump shaft coupling Automatic air release valve Pressure gauges Circulation relief valve (not used in conjunction with diesel engine drive with heat exchanger) Pump test device(s) Pump relief valve and piping (where maximum pump discharge P li f l d i i ( h i di h pressure exceeds the rating of the system components or the driver is of variable speed) Alarm sensors and indicators Right‐angle gear sets (for engine‐driven vertical shaft turbine pumps) Pressure maintenance (jockey) pump and accessories
Visual observations specified in the following g checklists shall be performed weekly:1. Pump House Conditions. Heat is adequate, not less than 40°F (4.4°C) [70°F d l h ( )[ (21°C) for pump room with diesel pumps without engine heaters]. Ventilating louvers are free to operate
2.Pump System Conditions. y Pump suction and discharge and bypass valves are fully open. Piping is free of leaks. Piping is free of leaks Suction line pressure gauge reading is normal. System line pressure gauge reading is normal. y p g g g Suction reservoir is full.
3.Electrical System Conditions. y Controller pilot light (power on) is illuminated. Transfer switch normal pilot light is illuminated. Isolating switch is closed — t db ( I l ti it h i l d standby (emergency) ) source. Reverse phase alarm pilot light is off or normal phase p p g p rotation pilot light is on. Oil level in vertical motor sight glass is normal.
4. Diesel Engine System Conditions. Fuel tank is two‐thirds full. Fuel tank is two thirds full Controller selector switch is in AUTO position. Batteries’ (2) voltage readings are normal. Batteries’ (2) charging current readings are normal. ( ) g g g Batteries’ (2) pilot lights are on or battery failure (2) pilot lights are off. All alarm pilot lights are off. Engine running time meter is reading. Engine running time meter is reading Oil level in right angle gear drive is normal. Crankcase oil level is normal. Cooling water level is normal. g Electrolyte level in batteries is normal. Battery terminals are free from corrosion. Water‐jacket heater is operating.
Purpose. The purpose of testing the pump assembly is to ensure automatic or manual operation upon demand and continuous delivery of the required system output. continuous delivery of the required system outputA weekly test of electric motor‐driven pump assemblies shall be conducted without flowing water. This test shall be conducted by starting the pump automatically. The pump shall run a minimum of 10 minutes.
A weekly test of diesel engine‐driven pump assemblies gshall be conducted without flowing water. This test shall be conducted by starting the pump automatically, and the pump shall run a minimum of automatically and the pump shall run a minimum of 30 minutes.A weekly test of steam turbine driven pump A weekly test of steam turbine‐driven pump assemblies shall be conducted.The pertinent visual observations or adjustments specified in the following checklists shall be conducted while the pump is running.
1. Pump System Procedure. y Record the system suction and discharge pressure gauge readings. Check the pump packing glands for slight discharge. Check the pump packing glands for slight discharge Adjust gland nuts if necessary. Check for unusual noise or vibration. Check packing boxes, bearings, or pump casing for overheating. Record the pump starting pressure. R d th t ti
2. Electrical System Procedure. y Observe the time for motor to accelerate to full speed. Record the time controller is on first step (for reduced voltage or reduced current starting). voltage or reduced current starting) Record the time pump runs after starting (for automatic stop controllers).3. Steam System Procedure. Record the steam pressure gauge reading. Observe the time for turbine to reach running speed.
4. Diesel Engine System Procedure. g y Observe the time for engine to crank. Observe the time for engine to reach running speed. Observe the engine oil pressure gauge, speed indicator, Ob th i il d i di t water, and oil temperature indicators periodically while engine is running. Record any abnormalities. Check the heat exchanger for cooling water flow.
The water level and the condition of the water in the tank shall be inspected monthlyException: Tanks equipped with supervised water level alarms that are connected to a constantly attended l h d l d d location shall be permitted to be inspected quarterlyThe exterior of the tank, supporting structure, vents, The exterior of the tank supporting structure vents foundation, condition of the water in the tank, and catwalks or ladders, where provided, shall be inspected quarterly for signs of obvious damage or weakening
The area surrounding the tank and supporting structure, where provided, shall be inspected quarterly to ensure that the following conditions are met: The area is free of combustible storage, trash, debris, brush, or material that could present a fire exposure hazard. The area is free of the accumulation of material on or near parts that could result in accelerated corrosion or rot. parts that could result in accelerated corrosion or rot The tank and support are free of ice buildup The exterior sides and top of similar walls are free of erosion (embankment‐supported, coated‐fabric tanks only). ( b k d df b k l )
The interior of the tank shall be inspected every 5 years. Exception No. 1: The interior of steel tanks without corrosion protection shall be inspected every 3 years. corrosion protection shall be inspected every 3 years Exception No. 2: The interior of pressure tanks shall be inspected every 3 years.
The interior inspection of the tank shall include the following: The interior coating shall be inspected for signs of local or general failure. Center columns of tubular design shall be inspected to make sure they are not holding water. Center columns shall be inspected to ensure that they are not permanently attached to the floor. Tanks on ring‐type foundations with sand in the middle shall be inspected for voids beneath the floor. Such voids shall be filled by pumping in grout or accessing the sand and replenishing. replenishing The heating system and components including piping shall be inspected. Damaged components and corroded pipe shall be replaced. The anti‐vortex plate shall be inspected
The hoops and grillage of wooden tanks shall be inspected annually.annuallyExterior painted, coated, or insulated surfaces of the tank and supporting structure, where provided, shall be inspected annually for signs of degradation. y g gThe air pressure in pressure tanks shall be inspected monthly. Exception: Pressure tanks that have their air pressure source supervised in accordance with NFPA 72, National Fire Alarm Code®, i d i d i h NFPA N i l Fi Al C d ® shall be permitted to be inspected quarterly.The heating system, where provided, shall be inspected daily during the heating season. Exception: Tank heating systems installed on tanks equipped with a supervised low water temperature alarm that are connected to a constantly attended location shall be permitted to be inspected weekly. weekly
Where the tank is subject to freezing, the water j gtemperature shall be inspected daily. The coldest water temperature shall not be less than 40°F (4°C). Exception: Tanks equipped with low water temperature E ti T k i d ith l t t t alarms that are connected to a constantly attended location shall be permitted to be inspected weekly and have the results recorded weekly.Expansion joints, where provided, shall be inspected annually for leaks and cracks.inspected annually for leaks and cracks
NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water‐Based Fire 5 p , g,Protection Systems , 1998 Edition