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Oil Cargo pump line-up
Three Steam-driven crude oil Cargo pumps can be lined up
for a variety of different services including:
• Cargo transfer between tanks
• Cargo offloading (to shuttle tanker)
• Tank stripping
• Tank washing
Incorrect line-up, or omission of closure of isolation valves
can result in the over-pressurisation of the suction piping
and/or gas separator vessel.
Some scenarios are slow developing, thanks to the slow
run-up time of the Cargo pumps.
However, where hazards are caused by a valve opening,
because the system is liquid filled, the PST is milliseconds.