Recent content by SG12345

Thanks for your reply. I'll give an example. Let's say we have a pressure gage with a 1/2" Male NPT connection. The pressure gage is screwed into a welded 1/2" Female NPT half coupling on the piping. Are there specific B31.3 pressure gage requirements? My understanding is that inline...

I was wondering if anyone knows whether or not ASME B31.3 addresses requirements for piping instrumentation e.g. pressure and temperature gages. When I read through the exclusions for B31.3, instrumentation was not listed yet when I look through B31.3, there are no specifics in regards to...

Thanks moltenmetal. Much appreciated. This confirms my feelings as well.

I should say Male threaded NPT Swagelok fitting....

Thank you MoltenMetal. I may not have been clear so I will clarify. Per B31.3, would it be permitted to tap a female NPT hole in a pipe and as an example, install a threaded NPT Swagelok fitting into it?

Just wondering if anyone is aware of a clause in B31.3 that specifically disallows the use of threaded branch connections. I've had a read through and I can't find a specific paragraph that explicitly disallows it though my instincts say that threaded branch connections should not be permitted...

Found it. Though it is shown in another Figure (Fig. 127.4.8(G)). It should be shown in Fig. 127.4.8(F) as well.

Hoping someone can help me on this one. Does anyone know where I can find the definition of variable 'tw' as called out in ASME B31.1 2010 Ed. Section 104.3.1(C.2)? Any help would be most appreciated.

Thank you both for your replies. The response was much like what I had expected.

My company has supplied several vessels that are now approaching their -3 sigma fatigue life as defined by ASME Section VIII, Div.2 which our client has been made aware of. The vessels are made from SA 516 Grade 70 and swing between 0 psig and 170 psig every 2.5 minutes. The operating...

Thanks for the info gr2. Interestingly, we haven't received any specs from the client. This should prove to be interesting.

I was wondering if anyone has experience fabrating ASME Sect. VIII, Div.1 vessels for export to India. I know that India has its own set of Boiler regulation laws. I also know that many companies in India(more than 80) are authorized to adorn the U stamp to their vessels. It would seem that...

Thanks Jamesl. I suspected this as well.

I have a question regarding the Appendix 41 analysis in ASME Section VIII, Div.1. I recently ran an analysis for a 8" 300# B16.5 SA 105 heater flange with holes drilled in it. I wanted to find out what the MAWP of the heater flange was going to be. It turns out that the MAWP of the heater...