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  1. psotil

    Allowable stresses for SA516 gr70 vs SA516 Gr 70N, ASME

    Can anyone advise on the allowable stresses to use for A516 gr70N? Due to the negative temperature application, B31.3 States that the normalised version must be used. I couldn't find a separate material entry for 516 gr70N and so I wanted to check if: 1) the allowable stresses are different...
  2. psotil

    leak sealling clamp tee with branch machined out of a solid made up of 3 plates weded together

    I am trying to come up with a leak sealing solution which will be built in the client country with the locally available materials that complies with Asme. I use ASME BPVC VIII to spec the required pipe with welded lug plate combination. I am trying to have a tee clamp with the branch lug...
  3. psotil

    Asme section ii part D- choosing the scale factor from table y-2 for Leak sealing

    I understand the concept of multiplying by a factor as described in the general note. What I want to know is how to choose the appropriate factor? the %Strain column ranges from 0.01-0.1%. I Want to know what is good engineering practice when selecting this. Is there a method? rule of thumb...
  4. psotil

    Asme section ii part D- choosing the scale factor from table y-2 for Leak sealing

    I am looking to use A240/316L as a flange/lug material for a leak sealing clamp. From reading section ii part D, this material has note (G5). The note states that this material is not recommended for applications where small deformation can cause leaks. Which is why I want to know the acceptable...
  5. psotil

    Mehanical Clamp repair design for a leaking pipe....Asme viii or B31.3

    Thanks jte, I have been asked not to reveal any info that could potentially reveal my company's identity. Apologies, my manager was very clear. I agree with you about using asme viii over b31.3, I was looking for a well justified explanation which I was hoping to find in the standards but that...
  6. psotil

    Mehanical Clamp repair design for a leaking pipe....Asme viii or B31.3

    Many thanks LittleInch and jte. I am looking into the maths side of this and the practical side. I want to be able to confidently say that A standard is more appropriate than B standard. Like you Little inch I am a part of a team that reviews a contractors work and so I have been assigned this...
  7. psotil

    Mehanical Clamp repair design for a leaking pipe....Asme viii or B31.3

    I am looking into the design a mechanical repair sealing clamp for a leaking pipe. The PCC-2 refers to the original construction code (b31.3) for design parameters. But the data in b31.3 refers to seamless pipe and doesn't account for the fact that the clamp is: - made up of 2 halves of a pipe...

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