Sect. VIII, Div. 1, U-1(e)(4)

[henderrj]

I can't think of anything that is applicable for this paragraph. All the gages and instruments I've seen are threaded into couplings, so the Code boundary
would end at the threaded joint. Can anyone enlighten me about anything that would apply to this paragraph?

 

[jte]

henderrj-

I think that's the point. The Code boundary ends at the threads, thus the gages and instruments are out of scope. There are some non-threaded means of inserting instruments into vessels. Agreeing on Code scope boundaries for some of these can be challenging.

 

[henderrj]

I read an interpretation that discussed electric immersion heaters, so that's one.