1 reply to this topic

[SPC]

Dear all,

 

       Following is System description:

 

Centrifugal Pump system P&ID

 

Observation:

 

Case -1 Pump suction line (starting from upstream of DP & strainer ) main isolation valve -Pipe line class same as discharge line.

 

Case -2 Pump Minimum recirculation line (  Starting from NRV including Flow control valve of Min. Recirc. line - Pipe Line class same as discharge line.

 

 

Query:

 

1) In both above cases ,why it is not considered pipe class same as suction line Pipe class ( lower rating)?

 

2) In above case no.2- Why Pipe rating has considered upto NRV ? Why not upto FLow control valve upstream?

 

 

Your advise / guidance on this subject would be highly appreciated.

 

 

Regards,

 

SPC

[SPC]

Dear all,

 

       Kindly review my query.

 

Hope for your answers.

 

Regards,

SPC