Thanks Jim, exactly what I was trying to convey.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jim Davidson
Sent: Tuesday, March 19, 2013 8:19 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?
Tony
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
