Box headers for air cooled heat exchangers

[jai2705]

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?

 

[SnTMan]

jai2705 , my interpretation, no.


Regards,

Mike