Hydro Re-Test
Hydro Re-Test
(OP)
If an existing piping system was designed and built to a piping specification of 265 psi at 100F. Then given a operating pressure of 40 psig and hydro tested to 60 psig. Would the line have to be re-hydroed if the operating pressure needed to be increased to 150 psig? If it does need to re re-hydroed can you please reference the code?





RE: Hydro Re-Test
David
RE: Hydro Re-Test
YES! given the information you have (and have not) supplied, I'd say that it must be tested to a minimum test pressure of probably 187.5 psig and maybe up to 225 psig, depending under which code, and maybe even where in the system the pipe is located. Some codes have area class design factors.
No references until you state which code.
What would you be doing, if you knew that you could not fail?
RE: Hydro Re-Test
RE: Hydro Re-Test
What would you be doing, if you knew that you could not fail?
RE: Hydro Re-Test
RE: Hydro Re-Test
What would you be doing, if you knew that you could not fail?
RE: Hydro Re-Test
The way I read it the first time you probably wouldn't have had to re-test.
David
RE: Hydro Re-Test
The OP really needs to supply some more details. Pretty hard to supply code references without knowing what code this piping was designed to.
RE: Hydro Re-Test
Thank you for the quick responces.