You have completed a crude oil wash. What action should be taken with the oil in the lines running to the washing machines?

Correct Answer: Option A — Open a COW nozzle forward and one aft and drain the line into the after tank by gravity

Following a crude oil wash (COW), cleaning lines must be drained to prevent residual oil buildup and hardening. Opening a COW nozzle forward and aft allows the remaining crude oil inside the fixed deck piping to drain safely by gravity into a designated cargo tank.