CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
(OP)
Dear members,
In the gas process plant, where must(or can)the conventional double block and bleed valve be used?
any comments is appreciated.
In the gas process plant, where must(or can)the conventional double block and bleed valve be used?
any comments is appreciated.





RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
www.dlm.co.za: Over Pressure Protection; Flow, Level & Density Measurement; Automation and Control.
www.metermatic.co.za: Electronic Presets; Additive Systems.
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
David
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
but, In the offered matter it is reffered to the hot work for which the double block and bleed can be used for the isolation. but, some pepole consider other criteria required for considering double block and bleed. these criteria are:
1. in high pressure system, operating press. above or equal to 70 barg
2. H2S partial press. > 1 bara
3. all normally closed process lines connecting to drain.
what is your opinion?
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
David
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
Check with A) your company engineering standards, B) local and government regulations - then use you engineering sences.
Best regards
Morten
RE: CONVENTIONAL DOUBLE BLOCK AND BLEED VALVES SYSTEM CONFIGURATON
Regards