View all text of Subjgrp 21 [§ 108.131 - § 108.147]
§ 108.139 - Boundary bulkheads and decks of a space containing emergency power.
Each boundary bulkhead and deck of a space containing an emergency electric power source or components of an emergency electric power source must be an A class bulkhead and A class deck respectively. When separate but adjoining spaces are provided for such equipment, boundary bulkhead type construction is not required for the separating partitions common to each space.