I22.In tankers, isolation valves shall be fitted in the fire main at the poop front in a protected position and on the tank deck at intervals of not more than () m to preserve the integrity of the fire main system in case of fire or explosion.
I22.In tankers, isolation valves shall be fitted in the fire main at the poop front in a protected position and on the tank deck at intervals of not more than () m to preserve the integrity of the fire main system in case of fire or explosion.