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Is it possible to avoid radiographic examination using AD-Merblatter ?

Is it possible to avoid radiographic examination using AD-Merblatter ?

Is it possible to avoid radiographic examination using AD-Merblatter ?

(OP)
I'd like to justified calculus of a pressure vessel using german design code AD-Merkblatter and I don't want to make non-destructively test.

It is permited in ASME VIII by using  a efficient joint of 0,7. The same is stated in European Directive 97/23/CE.

My question, if anyone is familiar to AD-Merkblatter, is to now if I can use a joint efficient of 0,7 (instead of 1 or 0,85) and have no obligation by this Code to make radiographic examination. Is it stated or accepted anywhere?

RE: Is it possible to avoid radiographic examination using AD-Merblatter ?

In AD -Merkblattet the extent of RT/UT is depending on the material , heattreatment and type of joint (long weld / circumferential/ weld crossing)and proven experience in some cases.. It is layed down in chapter HPO. No NDT is not possible.

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