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Old 09-15-2018, 07:12 PM   #3931
xoxoxoBruce
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If the pilot light goes out doesn't it shut off the gas supply?
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Old 09-15-2018, 08:33 PM   #3932
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It does in my house. There is some kind of thermal cutoff that cuts the gas if it cools. The pilot keeps it warm enough to keep the gas flowing.
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Old 09-16-2018, 01:56 AM   #3933
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Quote:
Originally Posted by xoxoxoBruce View Post
If the pilot light goes out doesn't it shut off the gas supply?
Yes for furnace and water heater. Oldest kitchen stoves and ovens (I believe pre-60s) - no.
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Old 09-16-2018, 09:20 AM   #3934
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We were talking about his wall heater.
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Old 09-16-2018, 04:08 PM   #3935
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Quote:
Originally Posted by xoxoxoBruce View Post
If the pilot light goes out doesn't it shut off the gas supply?
Yes.
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Old 09-16-2018, 04:09 PM   #3936
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It does in my house. There is some kind of thermal cutoff that cuts the gas if it cools. The pilot keeps it warm enough to keep the gas flowing.
That's the thermocouple that TW mentioned.
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Old 09-16-2018, 07:48 PM   #3937
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Now to understand the problem and what will be relevant in press reports. A gas system distributes gas at high pressures. At multiple points, regulators repeatedly reduce pressure until gas into a house is maybe 3 PSI. Apparently a high pressure surge started in Ohio. Then travels across three states. Somehow this pressure wave may have blown through layers of regulators.

Also are many pressure relief valves including one maybe at each consumer's gas meter. How did all this fail? A resulting investigation should be informative.
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Old 09-16-2018, 08:29 PM   #3938
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My gas meter is inside my house. It better not release any pressure.
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Old 09-16-2018, 09:09 PM   #3939
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Makes me wonder exactly how gas appliances work. Do modern ones only open the gas valves when certain ignition temperatures are confirmed? I know my oven works that way, but my 70 year old furnace doesn't. How about water heaters? Is there some sort of pilot light confirmation system?
Turns out that I was wrong. Our 1946 boiler has a thermocouple in the pilot light.



And! There is a cute little wolf spider down there that's hunting camel crickets. I tried to capture the reflection of his eyes, but it didn't come out so well. You can see it a little bit.
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Old 09-16-2018, 09:47 PM   #3940
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My gas meter is inside my house. It better not release any pressure.
Where is a regulator that feeds that meter?
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Old 09-16-2018, 10:00 PM   #3941
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Where is the cricket that feeds that spider?
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Old 09-16-2018, 10:10 PM   #3942
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I dunno.
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Old 09-16-2018, 10:12 PM   #3943
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It wiggles and jiggles and tickles inside her.
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Old 09-16-2018, 10:22 PM   #3944
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As long as it wasn't gassed.
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Old 12-06-2018, 03:34 PM   #3945
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Well, it ain't weird, but it is news.

If this sort thing happened more often this sort of thing wouldn't happen so often...

Woman kills jail escapee who kicks in her door

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