Good evening all, Im looking for some field experiences or even fire losses / saves where sprinkler protected warehousing also contains ceiling fans known as HV/LS or high-volume / low speed. These fans can span 24 feet in diameter and produce downdrafts of +300,000 cubic feet / minute.
I was inspecting an ESFR system in a high pile warehouse and noticed the fans and took an interest in them for their potential impact on sprinkler operation or performance. I've done some phone calls back and forth with the manufacturer and sales people, even an engineer or two. So far there is just two sides of the story: I see this large downward airflow as being a potential delay or impairment to initial head operation and therefore an AHJ problem. The other side sees this as not a problem because they have mustered an NFPA 'approval' since they allegedly do not violate the obstruction rules. There also is an article in this months NFPA journal on these fans and some preliminary testing. Naturally the manufacturer is quick to point out these fans are installed 'everywhere' and Im the only guy raising his concerns .... so since they are everywhere I'd like to hear about other people's experiences with them. Thanks group. Dave P. An AHJ in NJ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
