Re: Is it a Pipe or a Vessel

For what its worth

In NH3 Refrigeration If a pipe has end caps and block valves and is over 12 cubic feet in volume. It is considered a vessel and requires a UP stamp and atmospheric relief.

On Thursday, July 19, 2001, at 03:40 AM, SARE, RALPH H. wrote:

> FAQ - whether a unit being made part of a piping system is classified as
> piping or as pressure vessel. Both Section VIII and B31 is not clear on
> this. Or put in another way, when is a "unit" called a piping or a
> pressure
> vessel. Note that some "unit" are fabircated completely out if piping
> and
> piping components yet it isclassified as pressure vessel.
>
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[Non-text portions of this message have been removed] Received on Thu Jul 19 07:58:00 2001