Jay , Your question about locks may be considered engineering. Everything should be listed, and a competent Engineer must answer this question. Drawings stamped by a PE showing the chain arrangement should be submitted to the AHJ for approval.
-----Original Message----- From: Ron Greenman <[email protected]> To: [email protected] Sent: Fri, 7 Aug 2009 08:53:14 -0700 Subject: Re: Locks And would the number of locks being sold specifically to lock up fire system control valves be enough for any lock company to pay for a fire protection listing? Does UL have a protocol for listing locks in fire protection applications? Most of the pipe we use (scheduled steel) isn't listed but allowed by the standard. Is this lock thing being over thought? Am I guilty of contributing to the collection of over thought things? On Fri, Aug 7, 2009 at 5:43 AM, <[email protected]> wrote: > Typically when the situation arises that a valve for example is not electronically monitored the fire department will require you to provide a break-away style lock. This can be easily broken by the FD if they need to operate the valve. Check with your AHJ first to see if they will permit the lock in lieu of electronic supervision. > > If the lock has to be listed does the chain need to be also? Where would it stop? I think we are getting hung up on what really needs a listing and what doesn't. It can20easily get way out of hand as there are some components that you are never going to find listed because it isn't necessary. > > Craig L. Prahl, CET > Fire Protection Specialist > Mechanical Department > CH2MHILL > Lockwood Greene > 1500 International Drive > PO Box 491, Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > [email protected] > http://www.ch2m.com > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of Jay Jay Blocker > Sent: Thursday, August 06, 2009 11:31 PM > To: [email protected] > Subject: Locks > > I hope someone can shed light on this. Using this as a baseline: >> NFPA 13 (2002, Edition) 6.1.1.5 >> Components that do not affect system performance such as drain piping, >> drain valves and signs shall not be required to be listed. > > I have had a question presented to me regarding locks. If the control valve is locked utilizing chain and pad lock does the lock have to be listed? It prevents the valve from operating which affects the operation of the system so therefore the lock affects the operation. This was what was presented to me. > > The other side says that it affects stopping operation NOT operation. Basically this would stop someone from shutting off the supply after operation so the lock does not need to be listed. > =0 A> Any help? > > J > > > > _______________________________________________ > 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) > _______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA _______________________________________________ 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) _______________________________________________ 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)
