http://ch3ch2ch3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32?format=rss Tribe.net. Local Connections http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#1ce6e2f1-721c-48dc-8b24-b3066b6b3dea As I understood the discussion, it seemed that the pilot light had indeed licked down to the ALUMINUM accumulator tank, thereby raising the temp of the AL, weakening it, and causing it to fail. as we know, Al at temp has very little tensile strength. No one was hurt. But we did learn that Al tanks should be kept from possible puncture and heat...... Fri, 07 Aug 2009 17:00:41 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#1ce6e2f1-721c-48dc-8b24-b3066b6b3dea "dexterous" 2009-08-07T17:00:41Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#c2f5f3e7-3b96-4309-81ba-5707ec4c0f4b Yeah, that's what I thought. Dry Chem extinguishers aren't rated for pressure. They hold the chemical AND a small rated tank of pressurized gas (like a big Whip-It container). When you activate them, the "whip-it" pops and discharges into the main tank. The pressure in the tank forces the chem to a pressure valve that opens when it's positive inside the tank (this keeps the dry chem inside until needed). The only ones that Don't work this way are CO2 and halon. Both of those types are pressure containers from the ground up. I kept my mouth shut during the "small accumulator' discussion because I figured "fire extinguisher" was short for "CO2, pressure rated extinguisher". But, I guess not. And therein lies the danger. People who /know/ what they're talking about using shorthand around people who don't. Eventually they cheap out, and someone gets hurt. Tue, 14 Jul 2009 23:09:00 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#c2f5f3e7-3b96-4309-81ba-5707ec4c0f4b Tedward 2009-07-14T23:09:00Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#182a96d0-e5a6-45b6-bfe5-c5ff80a94eab Fairly small... looked about the size of a 5 lb. dry-chem cylinder. No visible paint, so it may have been sanded if it actually originated as an extinguisher. At the time I didn't think to check if the metal was steel or aluminum. It looked quite charred. Tue, 14 Jul 2009 21:43:52 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#182a96d0-e5a6-45b6-bfe5-c5ff80a94eab shawn 2009-07-14T21:43:52Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#51034f4b-f7b8-446e-9a84-e604c8ad2251 What kind of fire extinguisher was it? A CO2 or a large ABC type? Mon, 13 Jul 2009 04:45:39 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#51034f4b-f7b8-446e-9a84-e604c8ad2251 Tedward 2009-07-13T04:45:39Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#a6a9b025-296c-4075-ac5a-82ba58c318a8 Unless the fill for the accumulator was closed, heating would not result in an overpressure situation. It seems more likely that the flame impingement raised the temp. of the aluminum cylinder to the point where it lost structural strength. It would also seem prudent to plumb the pilot flame in after the shutoff, so that the pilot is extinguished if the valve is shut. AND WE HAVE A WINNER!!!!!!!!!!!!!!!!! Mon, 13 Jul 2009 00:31:56 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#a6a9b025-296c-4075-ac5a-82ba58c318a8 Jack 2009-07-13T00:31:56Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#42b06f09-59e5-40e9-89e7-aa87c19b2ad0 Unless the fill for the accumulator was closed, heating would not result in an overpressure situation. It seems more likely that the flame impingement raised the temp. of the aluminum cylinder to the point where it lost structural strength. It would also seem prudent to plumb the pilot flame in after the shutoff, so that the pilot is extinguished if the valve is shut. Sat, 11 Jul 2009 05:49:51 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#42b06f09-59e5-40e9-89e7-aa87c19b2ad0 Bart 2009-07-11T05:49:51Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#45026bf4-bfb1-4a2e-9b18-6cffe88f1c5e I saw the ripped tank on display at a flame effects workshop. It was formerly a fire extinguisher tank, well-rated for normal accumulator pressure. Apparently, the problem was that the accumulator and valve were mounted in a raised position near the output nozzle of the device, too close to the pilot flame. Strong winds caused the pilot flame to lick downward towards the accumulator tank, raising the temperature (and therefore the pressure) of the cylinder to rupture levels. The accumulator tank split open on the side in a most impressive manner, but my understanding is that because the effect was raised overhead, nobody was injured nearby. Wed, 17 Jun 2009 00:40:37 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#45026bf4-bfb1-4a2e-9b18-6cffe88f1c5e shawn 2009-06-17T00:40:37Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#ef6c483d-110e-4515-b317-5821b8cabc68 more details please. What happenned? Thu, 02 Oct 2008 18:29:50 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#ef6c483d-110e-4515-b317-5821b8cabc68 Cinder 2008-10-02T18:29:50Z http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#d36d9861-2951-4cb5-b0d6-c9dcfe9b55fc Got a message from Jack stating thta the ruptured accumulator was on an art piece on the playa not an art car. Caused by fire impingement on a former fire extinguisher cyclinder 3x12 inches in size. No injuries. Burn on...carefully. Wed, 01 Oct 2008 22:01:58 GMT http://CH3CH2CH3.tribe.net/thread/90526def-2e28-4239-b93a-dad326798c32#d36d9861-2951-4cb5-b0d6-c9dcfe9b55fc Jason 2008-10-01T22:01:58Z