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RePad in two pieces

RePad in two pieces

RE: RePad in two pieces

Josep Maria Perdigo, please read UG-37(h) . I'd say this weld is not categorized.

Regards,

Mike

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

RE: RePad in two pieces

You can do it. It is not Category A or B as per SnTMan. It's been done many many times.

RE: RePad in two pieces

I concur with weldstan.

RE: RePad in two pieces

If ASME Code Section VIII Division 2 were being considered, would the joining weld be categorized "E"?

RE: RePad in two pieces

Best location of weld is transverse in your sketch, otherwise you need to RT the welds or possibly increase the area of repad.

RE: RePad in two pieces

The repad is suppose to be seamless and you can only equal it by cat A 100% RT. Then attach it transverse, Longverse,reverse in anyway you please.

General Blr. CA,USA

RE: RePad in two pieces

GenB,
Not sure what you are stating but:
Repad can be in two pieces....seamless is not required.
Weld in two-piece repad is not categorized.
Attach the two-piece repad with weld transverse to the longitudinal axis of the horizontal vessel, and save the money that would be spent on RT.

RE: RePad in two pieces

SnTMan already pointed to UG-37(h) which explicitly allows for two piece repads without 100% RT. However, unless A5 is decreased, the seam must not be less than 45° off the long axis. The weld seam can be transverse to the long axis (and from a hoop stress perspective this is optimal), but it does not have to be. A very simplistic look at the geometry and thinking about the joint efficiency of a non-RT Category A joint ties together nicely. Although it doesn't apply to repads, Fig. UG-37 at 45° also provides a bit of logic to the ~70-75% joint efficiency which is otherwise given by Div. 1 to the effective strength of a repad.

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