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thnak you .. i'm asking that th ePSV has to be designed as per ASME 1 or ASME VIII ?

Dear Sheiko, 2/3 =0.666 and 10/13 =0.769 . 10/13 will give you a higher design pressure and API 521 also recommends. 10/13 only...

Dear all .. Can any one tell me ?... what code sholud be following in the steam exchaust line PSV. this is has been designed for blocked outlet conditions...... the turbine is back pressure turbine... the inlet is HP steam and Outlet is LP steam...

this exchnager is designed as per ASME 1 code.

since your are having high... flowrate... you need to consider the acoustic fatigue failure also in the PSV outlet line..

hope.... you can refer UOP design specification. this is give you good iede for choosing the feed distributor

my bypass valve size is 10". then what could be my pypass line size...

Dear all, i'm having a control valve which handles steam . the up stream pressure is 4 kg/cm2(g) and down stream pressure is .9 kg/cm2(g). The line sizes are : Upstream 20 " Down stream 24" Control valve size : 10". Can any one help me in selecting bypass line size and bypass valve size (gate)?

some says 25% ... they explanied me that it has been designed for fire case . liquid expansion ... they will allow 25%.

Dear all, can any onr tell me that the accumualtion pressure considered for thermal expansion case. My case is , there is heat exchanger shell side hydrocarbon and tube side cooling water. i wanted to have thermal expansino valve on tube side. my exhanger is designed for blocked outlet...