Pipeline Oxygen Standards

[zdas04]

I'm looking at pipeline interstate tariffs and the maximum acceptable oxygen is most often 0.2% (2,000 ppm). I can't find any process that is enhanced or retarded by 2000 ppm gaseous oxygen and I'm driving myself crazy trying to find the genesis of this value.

The farthest back I've been able to find references is about 1990 (with the implementation of FERC Order 636) but I've been told that the 2000 ppm oxygen number is much older than that.

Does anyone have any idea where this number might have come from?

David

 

[GregLocock]

Not wanting to perpetuate an urban legend but might not a legislator have said 1% of atmospheric sounds reasonable??



Cheers

Greg Locock

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[zdas04]

Makes as much sense as anything else I've heard.

Another potential urban legend is that it represents minimum uncertainty of 1950's vintage oxygen detectors. I don't know if that is true since I was born in 1953.

David

David Simpson, PE
MuleShoe Engineering

http://www.muleshoe-eng.com

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