Looking over a job where the EOR wants to use cylinders to supply the air for a dry system. There is plenty of power to the building so that's not the issue. They are showing lab air cylinders from both air (NC) and nitrogen (NO) into an AMD into the system. I get automatic air is not required. But I'm seeing NFPA 13 '12-7.2.6.5.1 limiting air supply when AUTOMATIC to dependable shop system or a compressor. I don't see bottles being allowed. Or that is to say I don't see bottles as being a dependable shop system.
I assume some of you have done bottles for the air to a dry system? As I read you can have them if someone manually opens a valve and refills the system when needed? Of course this is even confusing. Is there something on a manual fill system that requires daily checking? Or are they relying on the low pressure alarm to note when time to refill? Actually, the low pressure alarm isn't even required, right, so are they waiting for a system trip to know when to add air? If manual is allowed isn't an AMD off a bottle a little better but not quite the full blown compressor? Why would they restrict the middle on the order of worst to best? Who wants to straighten me out 'cuz none of us here have ever seen bottles used on a system? 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]<mailto:[email protected]> www.burnsmcd.com<http://www.burnsmcd.com/> Proud to be one of FORTUNE's 100 Best Companies to Work For *Registered in: MN -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20121004/0e12d424/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
