Procedure No. SAF 018 Rev. No. 3
Certified / Refinery Wide / Procedure No.:SAF 018
Effective Date:
December 1, 2008 / Fire Hydrant Operation / Rev. No.: 3
Written By:
CJ Herman / Auth. By: Joe Hench
(signature on file) / Page 1 of 3
SCOPE / This procedure explains the proper operation of a fire hydrant.
HEALTH
Special PPE & Special Hazards / Normal personal protective equipment (PPE)
SAFETY / Care must be taken. Fire water system is under pressure. (Above 100 psi)
REFERENCE
DOCUMENTS / American Darling Company
Ohio Fire Service Training Modules
NFPA 1001
SPECIAL MATERIALS & EQUIPMENT / Specially designed wrench or hand wheel that fits the hydrants operating nut and outlet caps.
QUALITY / Hydrant must be completely open to assure maximum flow and to reduce unwanted hydrant damage.
ENVIRONMENTAL / N/A
OVERVIEW
Fire hydrants are an integral part of the Fire Water System. When put into operation, it allows access to large quantities of pressurized fire fighting water at ground level. Fire hydrants are strategically placed so that sufficient amounts of firefighting water can be supplied to fire scene during fire emergencies. Some fire hydrants have fire fighting monitors mounted on them that are operational when that hydrant is turned on.
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Procedure No. SAF 018 Rev. No. 3
1.0Before Turning on the Hydrant / NOTE:Specially designed wrenches that fit the fire hydrants operating nut and outlet caps must be used. Adjustable open end wrenches will damage the operating nut.1.1Verify all outlet valves are closed.
__1.2Close the monitor nozzle or position it towards the desired target.
WARNING
Stand to one side of the hydrant when removing outlet caps. If cap turns hard, outlet valve may be leaking or not completely shut off, which could cause a possible pressurized condition.
__1.3If use of the pumper connection is required loosen cap with hydrant wrench, turning counter-clockwise.
__1.4Attach hoses as necessary.
2.0Turning on the Hydrant / CAUTION
Always stand opposite the pumper connection then completely open the hydrant valves. Failure to do so will restrict water flow and cause hydrant leaks from its drain holes.
2.1Open hydrant valve. Using special wrench or hand wheel, turn operating nut counter-clockwise until it will no longer turn freely. This usually takes about 15 to 20 revolutions to accomplish.
NOTE:The first few turns will be the hardest until pressure equalizes on both sides of valve.
3.0Turning Off Hydrants / CAUTION
Excessive tightening may damage valve and operating nut.
3.1Close the hydrant valve using special wrench or hand wheel.
3.2Turn operating nut clockwise until the valve is shut.
3.3Pull snugly on final turn.
4.0After Hydrant is Turned Off / 4.1Observe water level in the hydrant. Make sure level is going down (draining). By opening a side outlet valve ¼ inch.
NOTE:Indicators of water level are flow from monitor nozzle and flow from outlet valves. Once flow stops from outlet valve, hydrant is draining.
4.2If water level goes down, hydrant is draining properly.
NOTE:If hydrant is not draining, Work orders must be written and the fire dept should be notified.
__4.3Replace outlet caps. Hand tighten only.
__4.4Loosen caps that you might have tightened.
5.0Winterization / __5.1To prevent hydrants from freezing, hydrant valve should be closed. Leave one outlet valve open (1/4” off the seat) with cap off. Close all other hydrant outlet valves and place caps on them. clean threads on caps and fittings, making sure that exposed threads on open outlet valves are free of dirt and grime to protect the threads.
__5.2To prevent monitor nozzles from freezing, nozzles should be tilted down and open. The monitor swivels should be loose for winter use.
__5.3 For foam stations ,Drain the concentrate line by removing the concentrate hose, at the barrel connection and drain, then reconnect.
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