A double-interlock preaction with open sprinks? How did the air pressure part of that work?
Ed Kramer Manhattan, KS > A story I have repeated often. Sometime after Adam was kicked out of > Eden KQED TV in San Francisco had an event. Fairly new preaction > system. > Normally energized solenoid to trip double interlocked system. Battery > backup for the system. Power failure lasting some time. Person on duty > hears water running under raised floor. Call water department. They > say call fire department. 28 sprinklers are flowing on the stage and in > the auditorium. PA valve in locked room. No key on premises. FD won't > break down door, as there is no fire. Building engineer arrives two > hours into the event and turns off water. > > Ed responds to find all this mess, and oddly enough 28 open sprinks and > one intact. Finds out later that the sprinkler foreman on this job had > just done a deluge system at the airport. Same equipment, same > manufacturer. At the end of installation he had the apprentice knock > out all the links. Of course he missed one. Total exposure carpet, > plush seats, close to > $900,000 in color cameras and the like. Total damage $20,000. Of > course those were 1970's dollars, but so were the $900,000 > > > Ed Vining > 4819 John Muir Rd > Martinez CA 94553 > 925-228-8792 > Cell 925-787-0465 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
