31.1 or ASME SEC I ???

[juliomendez]

can someone explain me the main difference between the standard 31.1 and the ASME SEC I... i´m very confused with them...
yours truly JM

 

[vpl]

One applies to pipe and the other to pressure vessels.

Patricia Lougheed

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[StevenHPerry]

Adding to vpl's response: Sec 1 is for power boilers.

Both codes include graphics that clearly define their jurisdiction. Look around page 41 in Sec I and page 2 in B31.1.



- Steve Perry

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[Mr168]

You can also reference the Section I Preamble and PG-58.

There is an overlap of the two codes in regards to Boiler External Piping, where B31.1 has technical jurisdiction while ASME I has administrative.

 

[curtis2004]

juliomendez,

The main difference between the standard 31.1 and the ASME SEC I is one is about "small and fat and always boiling" (ASME Sec I), and another is about "round and very lo-o-ong" (B31.1).
Now, you won't be confused anymore.

Regards,

Curtis

 

[eyec]

asme extends from the boiler to the first valve/weld outside the boiler where 31.1 takes over.