Dismantling joint on pump suction 8

[Bahman07]

Hi
I am new here, and this is my first activity.
I am working on a water pump station. there is a debate on using dismantling joint on pump suction pipe for maintenance. Since we are using expansion joint on this line, is there a way to not considering dismantling joint? I have to say that suction pipe is from a concrete tank to pump nozzle.
Basically, are there any standards or practices for mandatory using of dismantling joint?
Thanks in advance

 

[HTURKAK]

Dear BAHMAN, regarding the above question , you want to ask the question to me but with mistake, you mentioned mr. TugboatEng. Is that correct?
If thaht is so,

I never proposed expansion joint and qualified that the use of expansion joint shall be approved , recommended by the pump manufacturer. In your case, The driver 355 kW , if expansion joint is used at pressure side, the thrust developing shall be resisted by pump body and foundation. Moreover, the pressure pipe will experience unbalanced high loads which may buckle if not properly supported.

With your proposed piping, i proposed fixable dismantling joint at inlet side but not expansion joint. and for pressure side, no dismantling joint, no EJ. since one can facilitate the repair just by loosening the dismantling joint at inlet side.

The horizontal bend 45 degr. complicating the force transfer. I am not sure how the developing thrust is transferred to the PS.'s.

Good Luck..

 

[Bahman07]

Dear BAHMAN, regarding the above question , you want to ask the question to me but with mistake, you mentioned mr. TugboatEng. Is that correct?
If thaht is so,

I never proposed expansion joint and qualified that the use of expansion joint shall be approved , recommended by the pump manufacturer. In your case, The driver 355 kW , if expansion joint is used at pressure side, the thrust developing shall be resisted by pump body and foundation. Moreover, the pressure pipe will experience unbalanced high loads which may buckle if not properly supported.

With your proposed piping, i proposed fixable dismantling joint at inlet side but not expansion joint. and for pressure side, no dismantling joint, no EJ. since one can facilitate the repair just by loosening the dismantling joint at inlet side.

The horizontal bend 45 degr. complicating the force transfer. I am not sure how the developing thrust is transferred to the PS.'s.

Good Luck..

YOU ARE RIGHT
THANKS FOR YOUR REPLY.