I realize this is tongue in cheek, but you may want to check out section 3007.1 of the 2009 IFC.
Jack Fairchild -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, March 19, 2013 11:59 AM To: [email protected] Subject: RE: Sprinkler Tree - Code Path B-b-but this project does have that dangerous nitrogen gas! Had someone get all excited on a recent project because of nitrogen and argon and started down this same trail of great alarm and concern. It was kind of funny until I mentioned that neither were flammable or combustible. Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Davidson Sent: Tuesday, March 19, 2013 11:19 AM To: [email protected] Subject: RE: Sprinkler Tree - Code Path Oxygen is an oxidizer all the other chemicals are toxic or acids, if you look up the requirements for hazardous areas as per NFPA 70 The National Electric code you will find no requirement for explosion proof electrical equipment someone is trying to confuse the issue and get the architect or Engineer to sign off on requiring explosion proof electrical equipment as a change order. We just had a mechanical engineer PE no less who required explosion proof electrical equipment in a oxygen gas manifold room of concrete construction and no fuel load, he even wanted to have combustible gas detectors installed, he insisted that because he was the mechanical engineer he was defining what was required after the project was bid out and he was making changes during material & equipment submittal process. The Owner finally stood up to the engineer and demanded that the engineer show him where in the code this type of explosion proof equipment was required. The engineer could not find any requirement in any code for the explosion proof equipment. The Owner back-charged the Engineering firm for the cost incurred and delay in construction because of his demands for a requirement that the engineer made up. Have a fire safe day! Regards Jim DAVIDSON ASSOCIATES Fire Protection Engineering P. O. Box 4010 Code Consultants Greenville, DE 19807-0010 Medical Gas Systems Engineering (302) 994-9500 Fax (302) 234-1781 CONFIDENTIALITY This report and any attachments are confidential and also may be privileged. If you are not the named recipient, or have otherwise received this report in error, please destroy the report, notify the sender immediately, and do not disclose its contents to any other person, use them for any purpose, or store or copy them in any medium. Thank you for your cooperation. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Monday, March 18, 2013 1:01 PM To: [email protected] Subject: RE: Sprinkler Tree - Code Path I wasn't told this building had any classification until the questions came from the electrical contractor. The building is a Nitric Acid Plant, and the MSDS they gave me was for Nitrogen, Nitric Oxyde, Nitrogen Dioxyde and Oxygen. They have to sort out whether this building is classified class 1 div.2 as per the electrical code. If it is, the riser still has to be within the building, but the devices will have to comply with the electrical code. Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Cahill, Christopher Sent: March 18, 2013 9:51 AM To: [email protected] Subject: RE: Sprinkler Tree - Code Path Could ya enlighten us why you have a riser in a classified area? Can be done but highly unusual, no? And what's with the removal of brass? Chris Cahill, PE* Senior Fire Protection Engineer, Aviation & Facilities Group Burns & McDonnell 8201 Norman Center Drive Bloomington, MN 55437 Phone: 952.656.3652 Fax: 952.229.2923 [email protected] www.burnsmcd.com Proud to be one of FORTUNE's 100 Best Companies to Work For *Registered in: MN -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Monday, March 18, 2013 10:45 AM To: [email protected] Subject: RE: Sprinkler Tree - Code Path Thanks John and thanks to everyone that replied. I'm enlightened. Tony ----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Sun Mar 17 00:24:00 2013 Subject: Sprinkler Tree I had an electrical contractor commenting on a sprinkler tree, as following: "The tamper switch and low flow switch are not rated for Class 1 Division 2 applications. Also, the brass body valve and gauges should also be replaced". Anyone know what he is talking about? 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