Horizontal Drum Tap Locations for Level Indicators

[CGonsalves]

Hi All,

My department is going through some spec reviews and something brought up a discussion about our horizontal Drum level tap locations and how we arrived at the standards that we have now.
For reference, we set a standard that the upper level tap shall be 4" above HHWL and the lower tap is 1" below LLWL. Of course this may change on a project-to-project basis but that's the "norm" for us.

So I was wondering if there's a specific standard that lays out a requirement for these taps.


Thanks!

 

[mk3223]

Not sure for a specific standard for the level taps setup. IMO, it's more related to the process design and/or the specific instrument requirements.