FPSO cargo tanks vent
FPSO cargo tanks vent
(OP)
Dear Gen;
I looking your help for finding solution to our serious problems during venting of cargo tanks of FPSO especially with calm weather (gas” H2S” falling onto the vessel main deck/process modules triggering process gas detection system and subsequently causing an ESD )
Proposing solutions;
-Extend the existing vent length from 10 to 18 m
-Install blowers near specific vent to try dissipate the gas
-Install low pressure compressor for recovering the gas
Your assistance is highly appreciated
I looking your help for finding solution to our serious problems during venting of cargo tanks of FPSO especially with calm weather (gas” H2S” falling onto the vessel main deck/process modules triggering process gas detection system and subsequently causing an ESD )
Proposing solutions;
-Extend the existing vent length from 10 to 18 m
-Install blowers near specific vent to try dissipate the gas
-Install low pressure compressor for recovering the gas
Your assistance is highly appreciated





RE: FPSO cargo tanks vent
Where are you working?
I am facing the same problem here in Brazil, and the received proposal was to install two new vents on either boards of the FPSO.
I really do not think this will be the best option, but for now, is the one being considered.
Please tell me if you found another solution...
Regards.
RE: FPSO cargo tanks vent
Are the vent line purged (e.g. with smoke or inert gas)?
Are the vent lines supplied with "relief valves" in "" because i cant remember the right term -but they are spring loaded valves that will release the pressure once a pressure of a few mbar has build up and close again at near atmospheric?
RE: FPSO cargo tanks vent
RE: FPSO cargo tanks vent
? I have helped design vents on two fpso, and have never heard of vapor recovery for these (or any particular strict emission rules)? IMO have no legal authorities i would assume, so each country must adopt the convention and implement this in their laws. So they may choose to leave out certain types of vessel, and bvesides FPSO never reaches habour when the take in oil.
Best regards
Morten
RE: FPSO cargo tanks vent
However, I have also worked on the venting gases on FPSO and offshore platforms. Toxic gases were recovered/separated before entering the venting system.
I agree that the rules are not mandatory except in American, Australian waters and other signatories of IMO rules. Obviously, there are level of emissions allowed, so the quantifying is critical.
RE: FPSO cargo tanks vent
RE: FPSO cargo tanks vent
Cheers,
gr2vessels
RE: FPSO cargo tanks vent