Omega Owners Forum
Chat Area => General Discussion Area => Topic started by: Markjay on 01 November 2008, 22:10:34
-
http://www.dailymail.co.uk/news/article-1082088/Blast-All-I-wanted-quick-ciggie-Drivers-lucky-escape-liquid-gas-car-explodes.html
-
Thats somewhere else on oof. ::)
-
that will teach him 2 valuable lessons:
1) Smoking Kills!
2) Never buy French
-
that will teach him 2 valuable lessons:
1) Smoking Kills!
2) Never buy French
;D Both very true, But I would have a peugeot 407 very very nice :)
-
He had the second-hand Peugeot 607 checked over twice by garage mechanics before he got behind the wheel.
that counts for nothing, most mechanics are not that familiar with LPG.....
if you smell gas in the car then it is fair to say there is a gas leak......and you shouldn't use LPG.....
If i smelt gas at home, i would call the gas board and not use it
-
He had the second-hand Peugeot 607 checked over twice by garage mechanics before he got behind the wheel.
that counts for nothing, most mechanics are not that familiar with LPG.....
if you smell gas in the car then it is fair to say there is a gas leak......and you shouldn't use LPG.....
If i smelt gas at home, i would call the gas board and not use it
Another quality LPGA certified converson, no doubt. :(
Not good publicity for LPG at all.
.. and WTF light up a fag when you can smell gas? ::)
Kevin
-
before the ciggy why dont open the windows and wait a bit ;D
-
Is there not a way of turning off the LPG system ?. If I understand it correctly, the tank feed is controlled by a solenoid. If this were turned off, there will only be the LPG remaining inthe pipework, which won't be that much, and would hopefully evaporate quickly, if you drove the car some distance.
Ken
-
The only way you can get an explosion like that is if there is a substantial buildup of gas in the car, making a rich enough mixture for it to explode. A correct installation will duct all connections to components within the car outside, so leaks into the interior of the car can't happen.
This is certainly the combination of a very dangerous installation and someone with no sense of smell whatsoever. The stench at that level of gas leakage would have been unbearable.
Given that he'd just filled up, I'd say his filler line was leaking into the car somehow.
Kevin
Edited to say:
The feed from the cylinder is protected by a solenoid valve at the cylinder itself and the filler to the cylinder has a non-return valve.
The gas tank almost certainly remained intact. They don't explode because they simply contain too rich a mixture of gas. A cylinder ruptured in a fire would burn quite rapidly, and until there's not much left of the car, but it wouldn't blow windows out and leave the car almost intact.
-
He had the second-hand Peugeot 607 checked over twice by garage mechanics before he got behind the wheel.
that counts for nothing, most mechanics are not that familiar with LPG.....
if you smell gas in the car then it is fair to say there is a gas leak......and you shouldn't use LPG.....
If i smelt gas at home, i would call the gas board and not use it
Another quality LPGA certified converson, no doubt. :(
Not good publicity for LPG at all.
.. and WTF light up a f*g when you can smell gas? ::)
Kevin
Probably... Yet another reason to do as most of us have and fit it yourself... At least then you nkow 100% that everything has been done to standard!
-
The only way you can get an explosion like that is if there is a substantial buildup of gas in the car, making a rich enough mixture for it to explode. A correct installation will duct all connections to components within the car outside, so leaks into the interior of the car can't happen.
This is certainly the combination of a very dangerous installation and someone with no sense of smell whatsoever. The stench at that level of gas leakage would have been unbearable.
Given that he'd just filled up, I'd say his filler line was leaking into the car somehow.
Kevin
Edited to say:
The feed from the cylinder is protected by a solenoid valve at the cylinder itself and the filler to the cylinder has a non-return valve.
The gas tank almost certainly remained intact. They don't explode because they simply contain too rich a mixture of gas. A cylinder ruptured in a fire would burn quite rapidly, and until there's not much left of the car, but it wouldn't blow windows out and leave the car almost intact.
Exactly ..
There are many times that I hold a lighter in front of the gas in kitchen and it dont fire up ..The concentration must have reached very high levels.. And still you dont smell it :o
-
:o Doesn`t really matter if it was deflagration or detonation; he must`ve been scared absolutely-wittless and very lucky to escape so lightly! :o
-
I don't think that this necessarily saying don't get LPG...
Let's think for a minute, if you car was smelling very heavily of petrol, would you just ignore it and light-up...?
If you did, the results would have been similar....
Both LPG and petrol are highly flammable, and a leak is a leak, which means that poor design or poor workmanship are dangerous with both LPG and petrol systems....
-
The only way you can get an explosion like that is if there is a substantial buildup of gas in the car, making a rich enough mixture for it to explode. A correct installation will duct all connections to components within the car outside, so leaks into the interior of the car can't happen.
This is certainly the combination of a very dangerous installation and someone with no sense of smell whatsoever. The stench at that level of gas leakage would have been unbearable.
Given that he'd just filled up, I'd say his filler line was leaking into the car somehow.
Kevin
Edited to say:
The feed from the cylinder is protected by a solenoid valve at the cylinder itself and the filler to the cylinder has a non-return valve.
The gas tank almost certainly remained intact. They don't explode because they simply contain too rich a mixture of gas. A cylinder ruptured in a fire would burn quite rapidly, and until there's not much left of the car, but it wouldn't blow windows out and leave the car almost intact.
Thanks KW, the engineer strikes again. Examine the facts, not the crap in the news ;D papers.
This must have been caused by a crap installation, or a fundamental breakdown in the LPG feed system, and a driver with no sense at all. Whether he should be in charge of a car is another question .
Could this have been caused by a badly supported gas feed pipe and speed bumps ?. I have had an exhaust knocked off by them, is this another casualty ?.
Ken
-
I wonder if it was installed by the same crew who bodged Dannys ? :-/ :o
-
I don't think that this necessarily saying don't get LPG...
Let's think for a minute, if you car was smelling very heavily of petrol, would you just ignore it and light-up...?
If you did, the results would have been similar....
Both LPG and petrol are highly flammable, and a leak is a leak, which means that poor design or poor workmanship are dangerous with both LPG and petrol systems....
Depends whether I fancied the insurance money.
-
This must have been caused by a crap installation, or a fundamental breakdown in the LPG feed system, and a driver with no sense at all. Whether he should be in charge of a car is another question .
Could this have been caused by a badly supported gas feed pipe and speed bumps ?. I have had an exhaust knocked off by them, is this another casualty ?.
Ken
Relevant parts highlighted. ;D
If installed to the LPGA COP, gas pipes would have to be installed where "a fixed part of the vehicle comes into contact with the road surface before that of the fuel tank, its fittings and adjacent pipes." and "should follow the safest route and be protected from impact, preferably below the body shell where it may be shielded by structural members of the vehicle."
So, if the installers followed the LPGA COP... ::)
In addition, a ruptured feed pipe would spill gas (more likely liquid at that stage) under the vehicle, the vapour pressure would drop and, in response, the LPG system would switch back to petrol and close the tank valve, stopping the leak. Propane vapour is heavier than air so it would sink to ground level and not build up in a confined space where it could cause a risk of explosion.
I believe this unfortunate incident can only have been caused by a leak from a fitting inside the vehicle that wasn't adequately shrouded and vented to the underside of the vehicle.
On top of that, the driver decided to light up despite the smell of gas. ::)
When mixed with air, LPG can form a flammable mixture: the flammable range at ambient temperature and pressure extends between approx. 2% of the vapour in air at its lower limit and approx. 10% of the vapour in air at its upper limit: within this range there is a risk of explosion. Outside this range any mixture is either too weak or too rich to propagate flame, but over rich mixtures can become hazardous when diluted with air. It should be noted that at pressures greater than atmospheric, the upper limit of flammability is increased but the increase with pressure is notlinear.
LPG is normally odorised before distribution by the addition of an odorant such as ethyl mercaptan or dimethyl sulphide, enabling detection of smell of the gas as concentrations down to one-fifth of the lower limit of flammability (ie,approximately 0.4%of the gas in air).
Kevin
-
On another note, the poor chap just bought the car, and it was the first time he filled-up with LPG... :(
I hope his insurers were made aware that the car had an LPG conversion though... :-?