chart for low temperature 1

[Bobfromoh]

I am looking for the chart that shows the one day low mean temperature across the US. This chart is used to determine
the MDMT for pressure vessel design. I can visualize the chart but I don't know where I last saw it. It kind of looks like the wind charts in the ASCE standards.
Can anyone refresh my memory as to where this chart is?

 

[metengr]

Check with the US weather service.

 

[chandljm]

I believe it is in API 650.

 

[gr2vessels]

bobfromoh,
It is indeed the API650 as chandljm noted above, the 11th ed. 2007, Fig.4-2.
Check it out.
cheers,
gr2vessels

 

[JoeTank]

In ASME VIII, the MDMT is eastablished based upon process conditions, not necessarily by weather-related data. I don't think the API-650 charts should be the sole basis for pressure vessel service. Vesssels are much smaller and may react more quickly to atmosphereic changes. The thinking is different for a storage tank. It gives good data for average daily temps at at your site. AWWA D100 has a newer version of the same chart. So does NFPA-22

Joe Tank

 

[Bobfromoh]

Thanks for your responses. Your answers were just what I was looking for.

 

[LSThill]

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