Our rule of thumb has always been that when codes conflict use the most
stringent,  then you know you are in compliance.   

If otherwise in doubt, contact the AHJ.




Craig L. Prahl, CET   
Fire Protection Group
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 danarbel
Sent: Tuesday, June 10, 2008 2:10 AM
To: [email protected]
Subject: Valve Supervision

Dear all

Confusion about electrical supervision of sprinkler control valves: 

According to NFPA 13, it is sufficient to chain lock the sprinkler
control valves. 

I.E. no requirement to monitor the position of the valves. 

Other NFPA codes such as 101 and 5000, require such supervision in
storage areas. 

IFC 2006 903.4 requires valves to be electrically supervised. 

I would appreciate your opinions

Dan Arbel




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