Out of his element: yes, yes and yes. The tank will be listed for a WORKING pressure of 175 psi (you can probably find out what it was tested to on the mfg's data sheet), the system is regulated (presumably to 175), you're not doing anything at the tank (like heating it up) to raise the pressure, and the only time the thing will have pressure being introduced to it will be when water is flowing (a built-in in pressure reducing feature of fire sprinklers). The question is, Is it any more of a pressure vessel than that funny shaped water tank we call a sprinkler system and if it is why then aren't the heat activated pressure reducing devices spaced every 10- 12 feet a
On Mon, Dec 7, 2009 at 6:58 AM, <[email protected]> wrote: > Does a State Boiler inspector have any jurisdiction over a foam-water bladder > tank? > > Question has come to surface concerning the requirement for a pressure safety > valve on the tank, when it's required (which apparently is always according > to the inspector it must be ASME labeled.) > > Site residual pressure is 130 psi, static is 160psi , system is fed by diesel > fire pumps, private loop. Pumps have PRV's on them. > > Is this guy out of his element? Anyone actually ever completed and submitted > pressure relief valve calculations with a submittal? > > This is the first time I've ever had any inspector question this issue. > > > 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 > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.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, WSAFM _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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)
