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Technical Discussions
Michael Brault
Canada, Joined Nov 2018, 1

Michael Brault

Canada,
Joined Nov 2018
1
05:15 Nov-29-2018
ASME VIII Divison 2, Table 7.9 Evaluation

Hello,

I am wondering if anyone has clarification on ASME VIII, Division 2, 7.5.5 Table 7.9. In this flaw acceptance table, there are two main criteria. A/T and L. For a flaw to be considered rejectable does it need to have an A/T and L greater than both values or a single value greater than either A/T or L?

I have read some older material about code case 2235 which states only one of the values needs to be greater but I would like some clarification.

Thanks in advance,

Mike.

 
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William A Jensen
Other,
IHI Southwest Technologies, Inc., USA, Joined May 2017, 67

William A Jensen

Other,
IHI Southwest Technologies, Inc.,
USA,
Joined May 2017
67
14:32 Nov-29-2018
Re: ASME VIII Divison 2, Table 7.9 Evaluation
In Reply to Michael Brault at 05:15 Nov-29-2018 (Opening).

Mike,

Although not familiar with Section VIII that much, the tables are essentially the same asSection XI (Inservice Inspection of Nuclear Power Plant Components). In Section XI, you determine both your a/l and your a/t for a given thickness. This will likely require linear interpolation(s). You then compare your a/t% to your a/l for that thickness. If your a/t% falls below the allowable a/t% for that thickness, the flaw is allowable.
Basically the answer is both matter.

 
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