Impact test exemption as per B 31. 3

[prem_nautiyal26]

A piping spool is to be fabricated.

Construction code: ASME B 31.3

Service LPG liquid

MDMT : minus 45 degree Celsius

Client spec calls for impact requirements. 

Pipe MOC is A 333 grade 6; Size 2 inch schedule 80 and 3 inch schedule 40.

My question is are these two thicknesses of 5.54mm and 5.49mm exempt from impact testing as per B 31.3 Fig. 323.2.2A curves ??

Please provide B 31.3 code reference. 

Regards

Prem Nautiyal

9769316004

Sent from Samsung Mobile

[Hafiz Ali Alvi]

Impact testing is mandatory requirement for A333.

Hafiz Ali Alvi

Sent from my iPhone

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[MW]

base metal can be exempted, unless your project specification says so. refer Table A-1, however welding procedure impact tests are required

A listed material may be used at any temperature not lower than the minimum shown in Table A-1, provided that the base metal, weld deposits, and heataffected zone (HAZ) are qualified as required by the applicable entry in Column A of Table 323.2.2.