In those conditions you do not provide the standard type of fire sprinkler systems. Buildings are constructed differently and arranged on the site to minimize fire spread and exposure, where automatic sprinkler systems are employed they are primarily self contained within the building including minimal water storage, more use of portable firefighting equipment and chemical extinguishment. You don't see water tanks and outside fire mains and hydrants. More stringent fire safety measures and controls are in place.
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 Ron Greenman Sent: Wednesday, April 06, 2011 1:12 PM To: [email protected] Subject: Re: Firewater Circulation Pump In areas of permafrost (which suggests very cold all the time) pipe is run above ground, sometimes steam jacketed. You may want to see what they do in Siberia, Lapland or the like. There are fire protection systems at the Antarctic research facilities. On Wed, Apr 6, 2011 at 9:26 AM, <[email protected]> wrote: > And that system was based on installation inside a building where it was tied > into a hydronic hvac system. So application to an underground fire main > would be a stretch. > > 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 Thom > Sent: Wednesday, April 06, 2011 12:23 PM > To: [email protected] > Subject: RE: Firewater Circulation Pump > > Two things to consider for any "Circulation system" to prevent freezing of > water in areas where the temp. would normally freeze the water. > Is all the water in motion? (your answer is NO. So at least parts of the > system will most likely freeze anyway.) Is there any heat source to create > input of sufficient BTU's to overcome any heat loss from exposure to the > below freezing elements? (Doesn't state this in your post.) > > NFPA 13, 2010 3.4.2 "Circulating Closed Loop Sprinkler System" might provide > some insight, but remember this was anticipated to be used with "Other > building systems" and not for freeze protection. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Damien > Shannon > Sent: Wednesday, April 06, 2011 6:40 AM > To: [email protected] > Subject: Firewater Circulation Pump > > Dear Forum, > > Wondering if anyone can share knowledge/experience in regards to 'Firewater > Circulation Pump' arrangements as a solution to freeze protection. > > Personally never heard of them before today but we have an enquiry in from a > facility that has one that is in place several years. 10" externally looped > main aboveground around a facility (approx 1500' worth). However it is not > performing as it was intended as he has had freeze ups. There are some > dead-end pipes feeding FHVs off this loop which I can't even see as being > feasible with the concept. > > Below is a link that discusses the topic (page 60), though it doesn't have > arrangement details/schematic or such. Can anyone provide info or refer a > source that would provide details for the valving/arrangement. > > Any insight would be appreciated. > > Damien Shannon > Provincial Sprinkler Company Ltd. > Unit 4, Cork Airport Industrial Estate > Kinsale Road, > Cork, Ireland. > Tel: (021) 4965058 > Fax: (021) 4317425 > > http://books.google.ie/books?id=1o6-H-ajj5oC&pg=PA60&dq=fire+water+recircula > tion+pumps&hl=en&ei=kc1sTfHELJSChQeQ2IWPDA&sa=X&oi=book_result&ct=result&res > num=1&ved=0CD4Q6AEwAA#v=onepage&q&f=false > > > > > _______________________________________________ > 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) > > _______________________________________________ > 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) > _______________________________________________ > 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 Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ 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) _______________________________________________ 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)
