Quantity of CO 2 for protection of spaces.

(a) The number of pounds of CO 2 required to protect a space must be equal to the gross volume of the space divided by the appropriate factor from Table 108.439. (b) If a machinery space includes a casing, the gross volume of the space may be calculated using the reductions allowed in 46 CFR 95.10-5(e). (c) If fuel can drain from a space to an adjacent space or if two spaces are not entirely separate, the requirements for both spaces must be used to determine the amount of CO 2 to be provided and the CO 2 system must be arranged to discharge into both spaces simultaneously. Table 108.439— CO 2 Supply Factors [Gross volume of space in cubic feet] Over Not over Factor 0 500 15 500 1,600 16 1,600 4,500 18 4,500 50,000 20 50,000 22