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Box headers for air cooled heat exchangers

Box headers for air cooled heat exchangers

Box headers for air cooled heat exchangers

(OP)
The header box is manufactured as per ASME Sec VIII Div.1 Ed 2013 and the MOC is SA 240 UNS 31803 (Duplex SS), MDMT (-)29 Deg C
Impact test is required for base material and Welding procedure as per UHA 51.
The header box consist corner joints UW-12 Type 7 (category C&D) and category C(Nozzle to Flange). There is no category A & B joints.

As per UHA 51(h), Vessel (Production) Impact test is required as per UG-84(i).

Since there is no category A & B joints, Is above still a requirement?

RE: Box headers for air cooled heat exchangers

jai2705 , my interpretation, no.


Regards,

Mike

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