Q.I have seen Minimum opening time for cargo valves in Framo system onboard. is there any such rule for non Framo ships?

Answer 1 Answers
Vikas Dhiman

Minimum opeining and closing times for valves are applicable for Non Framo ships also. The purpose is to prevent pressure surges in pipelines when cargo is flowing at high velocity. The minimum opening and closing times can be found in the opertators manual, or as a thumb rule it should not be less than 10% of the diameter of the valve.