Ammonia (Toxis) Piping - NDE

[Zakaria ghrab]

Dear Expert,

  Could you please advise for applicable code for AMMONIA piping (Toxic) in power plant. 

The issue is that according B31.1 only Visual test is required (according table 136.4).

Due to Toxic fluid service , we think it's resonable to extend NDE scope but we need some reference from ASME; 

There're some ASME piping code for this type of piping ? or other suggestions from your part.

Thank you.

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Thanks and Regards, 

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زكرياء غراب
GHRAB Zakaria 

Tunisia : +216 96 635 805

Yesterday is the past, tomorrow is the future; and today? Today is the present, the gift: Enjoy it!

[Raghuram Bathula]

is it B31.1 or B31.3 you are asking? generally it is 20% for category M fluid in B31.3, but project specs may increase up to 100%