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If a knock out pot is constructed simply out of 18 inch pipe and fittings, can it be considered a "piping component" under API to avoid relief calculations? Probably the only credible scenario would be fire (that is, if its not considered a piping component). The equipment is not otherwise...

Thanks for the information. I had forgotten about considering the local codes and will definitely bring that up with my client. On the other hand, and for reference if anyone else needs to know..... I did find a copy of the 1971 ASME BPVC Section 1 code at my local University library. Not...

Oops - I think we were posting at the same time!

Thanks, but I need to dig a bit further. Do you know if the 6% rule on Section 1 has been in effect since at least 1976? My client is trying to invoke a 10% over-pressure rule (116% for multiple devices), similar to an ASME Section VIII vessel. Their thinking is that the 6% rule was not in...

Hello- I am sizing relief devices for a client who has an ASME Section 1 boiler. Per the current code, if I set the valve at the MAWP, then my overpressure is limited to 6%. My client wants to invoke relief requirements for equipment at the time of installation (not necessarily current...

Hello all- I'm sizing a pressure relief valve on the non-steam producing side of my ASME Section 1 boiler. My entire boiler (shell and tube) are rated as ASME Section 1 per the U-1 form. However, does the non-steam side relief valve have to comply with Section 1 (106% accumulation, etc)? Thanks-

I have a process stream that has been characterized by Distillation Method UOP76, "High Vacuum Distillation of High Boiling Range Petroleum Products". I need to enter this into my simulation model, but only have options for ASTM or TBP methods. Does anyone know if there is a way to convert...

Does anyone know if the 12th edition of API 12F changed the thermal inbreathing requirement to be consistent with the 6th edition API 2000 calculation which is much more conservative than the previous method based on tank capacity?

Hi- I'm sizing conservation vents and emergency vents for several older API 650 tanks and need some advice. The mechanical drawings for the tanks say the MAWP is "atmospheric", but there is a noted test pressure of 2-3 psig. These tanks are NOT API 650 appendix F tanks, so the MAWP is...