EXII might be a bit over the top. Look at the situation, a trailer only, no tractor = no fuel loading. The trailer is being upfitted with electronic equipment. Probably installing cabinets, counters, soldering wires, etc. Kind of like a kitchen upfit with the addition of some really cool gadgets.
If you looked at NFPA 13 occupancies an electronic plant is manufacturing or assembling components, that's an OHI. A Repair Garage is OHII. This operation as compared to a MFGD home assembly occupancy has few if none of the same components that make the MFGD plant an EXII. And if it be known, the NFPA 13 reference to modular or mfgd home assembly was probably based on construction practices from 20-30 years ago when they were built with cheap 1/8" wood paneling throughout, plastic insulated panel ceilings, not based on GB walls and ceilings that most are made from now. So looking at all the issues It would appear that OHII at the most with portable FE's within the trailer during working hours could be deemed suitable. If they are installing portable generators within the trailer they should be unfueled and never started while the trailer is within the building. Any wood working such as building and cutting cabinets or counters should be done outside the trailer not inside. You may have to place some caveats within your design criteria to make sure everyone understands the limitations of the design. 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 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Thursday, January 07, 2010 12:19 PM To: [email protected] Subject: Re: trailer parked inside Maybe I've been confused from the beginning but I thought we were talking about a trailer with communications equipment in it for use as a mobile TV station that's been brought in for repair or modification and not a 40' van full of high piled combustibilium. Doesn't sound like storage or light wood manufacturing. if that's the case perhaps this is being over thought? And it's only a small part of the building being intermittently used for this activity. In fact, this sounds like even less than a repair garage to me unless, as I said, I misunderstood the original posting. On Thu, Jan 7, 2010 at 9:02 AM, Chris Cahill <[email protected]> wrote: > At least the few I have been involved with are designed for fire > safety in mind with truck shows or boats...Some don't even have > sprinklers above the main display area especially when over 200'. So > very large fires are anticipated and people are dealt with safely. > For example no one is allowed above the main concourse when there is a > combustible show on the event floor. The structure is not in > jeopardy. If all this applies to Todd's case then great, sprinklers > don't matter. Older convention centers yeah they probably are OHII but that > doesn't make it the right density. > > I'd play it IMHO it is EXII over the area and leave the final decision > up to the AHJ and owner. As long as you are on record you should be > safer if anything goes wrong. > > Chris Cahill, P.E. > Fire Protection Engineer > Sentry Fire Protection, Inc. > > 763-658-4483 > 763-658-4921 fax > > Email: [email protected] > > Mail: P.O. Box 69 > Waverly, MN 55390 > > Location: 4439 Hwy 12 SW > Waverly, MN 55390 > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Thom > McMahon > Sent: Thursday, January 07, 2010 10:46 AM > To: [email protected] > Subject: RE: trailer parked inside > > Anyone ever been to one of those Auto or truck shows for big rigs? > There the fuel load is enhanced by all the lighting and displays, > carpet ect. What would you protect an auditorium with? Is your roof > deck 100'-0" AFF? .3/2000 for the storage? I see no great difference > in your single trailer issue? Do you think every trailer in every > truck shop is unloaded before they bring it in to repair those burnt > out brakes, yet 13 would class that as auto repair, even if there were 100 > trucks and trailers inside. OHII? > > I think that if they are limited by space or whatever to one trailer > at a time, the protection you provide for the storage should just be > extended over the installation area. > > Not being a PE it is only my opinion, cause I'm not allowed to make > that kind of determination. > > (just a little testy this AM) > > Thom McMahon, SET > Firetech, Inc. > 2560 Copper Ridge Dr > P.O. Box 882136 > Steamboat Springs, CO 80488 > Tel: 970-879-7952 > Fax: 970-879-7926 > > > > _______________________________________________ > 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 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) _______________________________________________ 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)
