Insert plate width reduction 1

[K.P.M.]

Hello everyone ,

My custome has been asking to follow WRC insert plate width 1.65* sqrt(R×T)only. However, due to fabrication limitation we want reduce the width of insert plate by using FEA.
Q1. Can I customized the insert plate width.?
Q2. If nozzle has no external load but we want increase local thickness by the insert plate for nozzle reinforcement , still width of insert plate has to be as per WRC?
Q3. There is a statement WRC 297 , based on that can I use FEA to optimise the width ?
"
The rules of this bulletin do not directly cover the treatment of local reinforcement; however, with some judgment in the use of these rules, a reasonable analysis of reinforced penetration junctions can be made.

If the width of the shell reinforcement (pad plate or insert plate) is less than 1.65 RT, then conservatism would require that no credit be taken for the reinforcing material when calculating stress resultants at the junction."

Thanks.

 

[TGS4]

What is your Code of Construction?

 

[K.P.M.]

What is your Code of Construction?

Asme sec. VIII div 1

 

[TGS4]

ASME Section VIII, Division 1 has no such restrictions. You are able to access Appendix 46, which will lead you to Division 2, Part 5 (Design-By-Analysis) either through U-2(g) or UG-16(a). From the perspective of the Code, you can avail yourself of that option.

If your customer is asking you (is it a verbal request, or something in your contract??) to follow something beyond the Code, that is a contractual matter, best managed with your contracts department, and in negotiation with your customer.