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HG - Appendix Y Calc

HG - Appendix Y Calc

HG - Appendix Y Calc

(OP)
I am trying to establish HG for Appendix Y flange. (Not self sealing gasket)
There is no calc in App. Y for HG.
Do I revert to App. 2 where HG = W - H?, where W = ((Am +Ab)x SA)/2 for gasket seating?
And where Am = Am2 (bolt area required for gasket seating)?

Any thoughts?

RE: HG - Appendix Y Calc

david339933, yes, I think you are on the right track there. See Y-1(b). I'd assume you'd need to check both operating and gasket seating (HG = W-H) cases.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: HG - Appendix Y Calc

(OP)
Thanks Mike....that seems to be the problem. Operating conditions W=Wm1 in App. Y, where Wm1 = H + HC + HG....when HG is unknown. Are you saying Wm1 be calculated as per App. 2 instead?..then use HG in App. Y where Wm1 = H + HC + HG?

RE: HG - Appendix Y Calc

Yes, so it would seem. It appears that as Appendix Y is based around a self energizing gasket, if that type is not used then you will have to design for both seating and operating conditions, as per Apx 2.

But, understand that I have not (and likely will not) go thru it in detail.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: HG - Appendix Y Calc

(OP)
Ha...yes, understood...I don't expect you to do it all for me! Turns out bolt stress was too great for App. Y anyhow, so I used App. 2 for all.
Just curious as to methodology for my own knowledge.

RE: HG - Appendix Y Calc

david339933, no, I didn't expect you did :)

The problem with sloppy work is that the supply FAR EXCEEDS the demand

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