nothing changed (except for dwelling units). The 500 gal w/o QOD or 750 gal limits still apply. The timed approach is just for exceeding them. As for dwelling units, it is not 15 sec regardless of size.
Roland On Jun 17, 2009, at 3:44 PM, Ron Greenman wrote: > So what drove the change from the old way of working trip times (under > 500 gal. all was good, 500-750 gals. and either 60 seconds or QOD, > over 750 gals. QOD and all is good)? was it due to systems failing due > to too long trip times or was it a way to sell an expensive computer > program? If due to failures did it happen in a cross section of > buildings or in certain types of buildings and if the latter is it > necessary to treat all systems equally? Certainly requirements to trip > test everything to 60 seconds in years past was based on local > requirements arrived at collectively by AHJs because they wanted it > and it was complied with enough to become the usual thing to do until > it became codified--first locally and then in 13. Where's the data > that supported this costly change at point in this migration from what > 13 said to what it says now? Enquiring minds want to know. > _______________________________________________ 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)
