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Retest requirement of impact test as Per ASME B31.3

Retest requirement of impact test as Per ASME B31.3

Retest requirement of impact test as Per ASME B31.3

Dear Experts,

The three specimens from the HAZ side are tested found two values are less than minimum value permitted for single specimen whereas the average of the three specimens exceeds the average value required.
Am I allowed to go for retest?.

The code retest criteria is "when the average value of the three specimens equals or exceeds the minimum value permitted for a single specimen and the value for more than one specimen is below the required average value, or when the value for one specimen is below the minimum value permitted for a single specimen , a retest of three.........

based on the above 1st condition, since the average of three values exceeds the minimum value required and two speciemns value less than the average value required (even it is less than the minimum value permitted), i believe the retest can be done.

RE: Retest requirement of impact test as Per ASME B31.3

Assuming you're asking about 323.3.5(d)(1), then yes, you are allowed a retest.

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