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Hey guys, sorry for the late response. 1. No, I can't send photos as this is not built yet; we're still in the design phase. 2. My boss wanted the fillet weld leg length to be at least 1.4x the nominal thickness of the run pipe. I'm going to go through those papers today but KevinNZ's point...

MJCronin you're a life saver. I think these references are exactly what I was looking for. Thanks a ton!

Yes, we have sufficient SW gap in our designs. **I also neglected to note, we are applying the 1.4x factor to the thickness of the run pipe, not to calculated Tmin

Thanks for your responses everyone. To clarify some points: 1. The location of this weld is not the same location as where we had a break before 2. The main source of stress is thermal. This pipe is essentially like a sparging line with water at ~150C which enters a steam pipe that's at...

There's no particular reason why we cannot use buttweld, but for this design we have used socketweld as standard in the past, and changing the design is not going to fly at this point. (This piping is going to be part of an assembly which we mfg and then ship to a customer) I understand that...

Hey guys, I'm working on some 1.5" piping that's going to be in Hi-temperature steam service. I was having a little argument with my boss because due to him wanting to use a higher weld size (1.5 x Tm) than required by ASME B31.1, because we've had pipe break in the field in this application...