I think one basement room filled with gas would be enough. How long
it takes to fill a room to that degree I don't know, but apparently it
is no more than the time from the "POP" to the explosion.
When the air force bombs a building, they don't have to set of little
bombs throughout the building. A bomb that explodes in one room will
Remove NOPSAM to email me. Please let
me know if you have posted also.
This is still preliminary, but apparently they heard a bang, smelled gas, and
the son came outside. The explosion occured almost immediately after this, I
think the timeline was very very short. I think the mother was already
outside raking leaves, nobody else was home. They are lucky it happen in the
daytime, there were no serious injuries.
When I lived just a few towns away from the town where this happened, the
gas company had a slogan "Go modern, go gas".
We already had gas heat, hot water, cooking etc. The house two doors away
The slogan became " Go gas, go modern, go boom".
Really a freak accident. I would guess your chance of being injured by
a gas explosion (assuming you are following code) is about equal to the
added chance of fire or electrocution due to a malfunction of your heat
pump. Both are very remote. You have a far better chance of winning the
If you like explosions, a little research will find a number of
situations where gasoline has contaminated sewer lines and blown up areas of
In 1984, I was operating a service station I leased from the oil
company. They owned the building, the tanks and the gas in them. I
paid for gas through the pumps.
At that time (maybe still) the state required pressure testing of the
tanks at regular intervals. This time the tank failed. Before they
could release the pressure, 700 gallons of gas seeped into a 4 foot
storm drain 30 feet away. It dumped into a creek a half mile away
through a residential neighborhood. Major cleanup; major evacuation.
Contaminated soil was hauled away in sealed drums at $455 each.
Excavation equipment without electrical systems was used to dig the
soil out and later at the evaporation site to turn the soil daily.
They were started with APU carts at least 200 feet away. Operators
wore hazmat suits and respirators.
There is now a car wash on that site. Behind it is a 36" ventilation
well with a suction fan on a 25' stack. I'm told the air/fuel mixture
coming out is still combustible twenty-one years later
Yikes! I assume the tanks were underground, where did the leak occur? How did
it get to the storm drain, or did not just migrate from the tank directly to the
storm drain well? Was it leaded gas?
I'll bet it is! There are a few gas stations in my town that have histories of
leaking tanks many years ago, and are still being remediated today. One leaked
while it was a Chevron station, I don't even recall Chevron ever being in this
part of the country (Massachusetts). The environmental engineers were able to
track which plume was which by looking at what additives were in each brand of
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