LPG fire at service station in Maryborough Qld
in [Aussie Drivers]
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From: D Walford on 9 Aug 2010 03:22 On 9/08/2010 5:00 PM, Athol wrote: > D Walford<dwalford(a)internode.on.net> wrote: > >> Shell servo near my place used to fill barbecue bottles direct from the >> bowser without incident. > > The main problem is that BBQ cylinders, some upright domestic cylinders > and a small minority of forklift bottles are rated to a lower pressure > than the rest. The low pressure rating means that filling from a bowser > can produce sufficient pressure to rupture the cylinder, whereas the > ones that are rated for the higher pressure are fine to fill at a bowser > without risk of rupture. > > Of course, there's also the question of whether the cylinder was old and > past it's 10 year test date, or damaged prior to filling... > It was a long time ago but I'm sure that if there were an incident with the LPG I would have heard about it, I used to fill up there with LPG almost everyday there back when I was a courier, the manager knew I used to travel all over Melb so he would frequently come and ask me what LPG prices I'd seen and he would often adjust his price if I told him others were much different to his. Daryl
From: jonz on 8 Aug 2010 16:00 On 8/9/2010 8:49 AM, tipsy(a)beerlover.com.au wrote: > On Mon, 9 Aug 2010 07:43:25 +1000, "Milton"<millame23(a)yahoo.com> wrote: > >> I was reading in the Fraser Coast Chronicle the other day where a guy was >> filling up his LPG barbeque bottle at the LPG car pump and started a fire. >> Quite a bit of damage to the servo and looks like the guy is going to be >> charged. I've been trying to find the page on the Net to show you but can't >> find it. I only hope the guy isn't a regular of this n/g because I know of >> cases where some in here (I won't mention any names) have said it's cheaper >> to fill your barbeque bottle at the bowser if you had the adapter, because >> it's the same LPG. Could have been catastophic. Anyone else read about this >> in their local? > > A few people I know have been doing this for years with no ill effect. The bloke in Qld > probably had the wrong adapter or got bored and lit a ciggie. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ typical pisspot response................... > -- jonz "Usenet is like a herd of performing elephants with diarrhea - massive, difficult to redirect, awe-inspiring, entertaining, and a source of mind - boggling amounts of excrement when you least expect it." - Gene Spafford,1992
From: jonz on 8 Aug 2010 16:09 On 8/9/2010 5:00 PM, Athol wrote: > D Walford<dwalford(a)internode.on.net> wrote: > >> Shell servo near my place used to fill barbecue bottles direct from the >> bowser without incident. > > The main problem is that BBQ cylinders, some upright domestic cylinders > and a small minority of forklift bottles are rated to a lower pressure > than the rest. The low pressure rating means that filling from a bowser > can produce sufficient pressure to rupture the cylinder, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ know all...know nothing... whereas the > ones that are rated for the higher pressure are fine to fill at a bowser > without risk of rupture. > > Of course, there's also the question of whether the cylinder was old and > past it's 10 year test date, or damaged prior to filling... ~~~~~~~~~~~~~~~~~~~~~~~~~~~ read the regs........as i said, "know all know nothing"...u to a t...... > -- jonz "Usenet is like a herd of performing elephants with diarrhea - massive, difficult to redirect, awe-inspiring, entertaining, and a source of mind - boggling amounts of excrement when you least expect it." - Gene Spafford,1992
From: Atheist Chaplain on 9 Aug 2010 04:17 "Milton" <millame23(a)yahoo.com> wrote in message news:4c5f24fd$0$28648$c3e8da3(a)news.astraweb.com... > I was reading in the Fraser Coast Chronicle the other day where a guy was > filling up his LPG barbeque bottle at the LPG car pump and started a fire. > Quite a bit of damage to the servo and looks like the guy is going to be > charged. I've been trying to find the page on the Net to show you but > can't find it. I only hope the guy isn't a regular of this n/g because I > know of cases where some in here (I won't mention any names) have said > it's cheaper to fill your barbeque bottle at the bowser if you had the > adapter, because it's the same LPG. Could have been catastophic. Anyone > else read about this in their local? > > Regards > > Milton http://www.frasercoastchronicle.com.au/story/2010/08/02/explosion-under-investigation-united-service-gas/ -- [This comment is no longer available due to a copyright claim by Church of Scientology International] "I like your Christ. I do not like your Christians. They are so unlike your Christ"
From: Doug Jewell on 9 Aug 2010 05:45
Athol wrote: > D Walford <dwalford(a)internode.on.net> wrote: > >> Shell servo near my place used to fill barbecue bottles direct from the >> bowser without incident. > > The main problem is that BBQ cylinders, some upright domestic cylinders > and a small minority of forklift bottles are rated to a lower pressure > than the rest. The low pressure rating means that filling from a bowser > can produce sufficient pressure to rupture the cylinder, whereas the > ones that are rated for the higher pressure are fine to fill at a bowser > without risk of rupture. Nope. LPG (mostly propane) has a vapour of about 125psi at 25C, increasing to about 190psi at 40C. So long as the container is not overfilled or overheated, the pressure cannot exceed the vapour pressure, and as long as there is any liquid in the cylinder the pressure cannot drop below the vapour pressure. So EVERY LPG cylinder has a pressure of 125psi at 25C, no more, no less. It doesn't mater if it is a BBQ bottle, domestic cylinder or forklift cylinder, at the same temperature it will always have the same pressure in it. The risk is over filling or allowing the temperature to increase too much. Because liquid is not compressible, the pressure in an over-filled bottle will skyrocket if the temperature rises just a little bit. Likewise if the temperature is allowed to increase above 40C the vapour pressure will start to lift very fast. But as long as you keep temperature down and don't overfill, it is impossible to over-pressurise an LPG bottle with LPG. I think you may be confusing high pressure CNG bottles. Because CNG doesn't liquify at normal temperatures, it is stored as a very high pressure gas - typically anywhere between 500 and 3000 psi. Putting CNG into an LPG bottle is a sure recipe for a big bang. > > Of course, there's also the question of whether the cylinder was old and > past it's 10 year test date, or damaged prior to filling... The main thing that kills cylinders is metal fatigue from being repeatedly emptied and refilled. If you refill them before they are completely empty, and don't let them get too hot, the pressure will stay close to constant, hence minimal fatigue. They will then last a hell of a lot longer than the 10 year rating. > -- What is the difference between a duck? |