The quantity of CO2 free gas shall be sufficient to give a volume equal to the larger of the following volumes, either.
· 40% of the gross volume of the largest machinery space so protected, the Volume to exclude that part of the casing above the less of the horizontal area of the space concerned taken midway between the tank top and lowest part of the casing. or · 35% of the gross volume of the largest machinery space protected, including the casing. 难以理解?清求高手帮助 |