The hydro is to find out if the thing is full of holes IIRC. Automatic dry has air pressure to monitor that, the others don't. Presumably this will be updated when all standpipes have to be air supervised for leakage (in the next edition, as of now, of 14)
Mike Morey CFPS 3229 • NICET S.E.T. 123677 Project Manager • Fire Protection Group Shambaugh & Son, LP an EMCOR Company 7614 Opportunity Drive • Fort Wayne, IN • 46825 direct 260.487.7824 / cell 260.417.0625 / fax 260.487.7991 email [email protected] -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of jaycs7919--- via Sprinklerforum Sent: Thursday, October 28, 2021 2:19 PM To: Sprinkler Forum <[email protected]> Cc: [email protected] Subject: Hydrostatic testing of Automatic Dry Standpipes BE ADVISED - This email originated outside EMCOR. Do you have to do a hydrostatic test of an automatic dry standpipe based on the 2017 or 2020 edition of 25? https://urldefense.com/v3/__http://6.3.2.1__;!!FaxH778!JXv4ug48P204AzhXwW0J9xcK7hgbtEeaK5RFdEz1iPXJcmBcCujziJZbsNmvcaLL$ calls out the hydrostatic test of manual stadpipes and semiautomatic dry standpipes; no mention of automatic dry standpipes. Under the definitions, the difference is that the semiautomatic uses a deluge valve with pull stations or some control device to activate the system. The automatic uses a dry valve and opening the valve operates the system. It doesn't make sense that you would test one type but not the other. What am I missing? Jay Stough NICET IV LAYOUT NICET III ITM _______________________________________________ Sprinklerforum mailing list [email protected] https://urldefense.com/v3/__http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org__;!!FaxH778!JXv4ug48P204AzhXwW0J9xcK7hgbtEeaK5RFdEz1iPXJcmBcCujziJZbsC2IrYI-$ This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
