Good Afternoon All:
Does anybody know if a surge arrester exists for fire protection systems? I was testing a pump this morning at a clients facility, meanwhile one of our fitters was at the same clients other facility dealing with apparent water hammers (the pump had nothing to do with the scenario it takes suction from a tank). Coincidently I noticed a fire hydrant equipped with a hydrant meter and hose next to the property that I was at, two Tenders show up to fill at that time to fill up with water bingo there is the cause of the water hammers. The truck drivers were closing the 2 ½ ball valves on the truck fill line opposed to the gate valve on the hydrant meter. Talking to the maintenance people of the facility experiencing the hammers, they say this has been going one for 3 days now and mentioned the sprinkler system was really getting banged around because of the hammers. I educated the company that was hauling the water on shutting down with the gate valve, however company X might come along and do the same thing causing damage to the sprinkler system. So with this all said does anybody have any ideas on how to minimize the water hammers? My company got dragged into a lawsuit several years ago because of this very thing at a different location. Developer X was watering down a construction site getting the water from a hydrant attached to the lead in for the sprinkler system, building owner shut off the alarm line valve so the WMG wouldnt ring, 3 days later a 6 Vic coupling blew apart on top of the riser caused lots of water damage. We got blamed since we installed the system 10 years earlier. What a great legal system we have here, nobody seems to fess up to their own actions or lack of. Jim Johnston, P.E. Fire Protection Engineer Inland Fire Protection, Inc 1100 Ahtanum Road Yakima, WA 98903 Phone 509-248-4471 Fax 509-248-1180 [email protected] _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
