11" Rigsaver air shut off Valve - Safety Bulletin

Diesel engines used for offshore power generation should be fitted with a shut off valve that blocks the engines intake system, cutting off both the external fuel source and air required to keep the engine running, preventing the catastrophic consequences of diesel engine runaway.

Legacy 11" air shut off valves manufactured prior to January 2014 are likely to require modification and servicing to ensure safe activation of the valve.

After extended periods of vibration the valve could require a higher air pressure to activate or may have a tendency to false trip.

See the attached safety bulletin from Rigsaver.