The safest way to blow down natgas lines
The safest way to blow down natgas lines
(OP)
I would like to know...I know you have to gas free it and all....is it possible for one of you engineers to design a type of "mini-flare" system, equipped with a reducer, a propane tank to pre-light it before the gas hits it so it can be burning already, like at methane plants, of which have large flares with the same thing...sort of..I just thought after that mess up there in Middleton, Conn. that it was possible to flare it off instead of just letting it blow all over the place, causing a dangerous situation





RE: The safest way to blow down natgas lines
Better, is to just make sure the gas reaches somewhere safe, open, and is diluted beyond flammability without an ignition source available.
Keith Cress
kcress - http://www.flaminsystems.com
RE: The safest way to blow down natgas lines
In western Canada, you have to have an available flarestack to blowdown a pipeline as regulations would not permit blowing down sour gas to atmosphere.
If the gas in the pipeline is too rich to burn (the normal situation) then there is little risk of blow back / detonation in a properly design flare stack. If the gas may contain a combustible mixture then you could add additional gas to make it too rich to burn or install a detonation arrestor in piping immediately upstream of the flare stack.
RE: The safest way to blow down natgas lines
RE: The safest way to blow down natgas lines
I would monitor the CSB site for future updates.
No amount of rules and regulation can overcome a lapse in common sense.
http://www
RE: The safest way to blow down natgas lines
RE: The safest way to blow down natgas lines
**********************
"The problem isn't working out the equation,
its finding the answer to the real question." BigInch
http://virtualpipeline.spaces.live.com/
RE: The safest way to blow down natgas lines
5%/15%. So you can e.g. mix 50% air into your NG - and it still cant ignite it.
This is actually done here in Denmark to make "city gas". City gas has a lower heating value and therefore consumers would have to replace all their equipment if the utility company switched to NG in those cities where "city gas" was installed before NG came around.
But - small mobile flares do exist. Heres a link (just found it by google search. Do not know the quality or limits of their services):
ht
Best regards
Morten
RE: The safest way to blow down natgas lines
We would mow down the grass and set up the flare all 2" with ansi 150 4 bolt flanges.