49 CFR 176.132
Magazine stowage Type B.
(a) Magazine stowage type B is the same as magazine stowage type A as prescribed in § 176.130 of this part, except:
(1) The floor need not be tightly sheathed with wood but must be sparred or protected by wooden pallets or dunnage; and
(2) Battening of the vessel's sides, bulkheads, and stanchions is not required.
(b) A compartment may be used for magazine stowage type B without a magazine structure provided that:
(1) The Class 1 (explosive) materials are stowed on wooden gratings, pallets, or dunnage, directly on the deck and not on other cargo;
(2) Other cargo stowed in the same compartment is not readily combustible material; and
(3) The position of the stowage is such that there is direct access to the hatchway.
(c) Class 1 (explosive) materials and other cargo in the same compartment must be secured to eliminate the possibility of significant movement. Where an entire deck is used as a magazine, the stowage must be so arranged that the Class 1 (explosive) materials stowed therein will be removed from the ship before working any cargo in any decks above or below the space in the same hatch.
[Amdt. 176-30, 55 FR 52696, Dec. 21, 1990, as amended at 56 FR 66282, Dec. 20, 1991]