Hull Construction Regulations

236 (1) Subject to subsection (2), no duct provided for the ventilation of an accommodation space, service space or control station shall pass through a machinery space of Category A, galley or car deck space unless the duct is

• (a) constructed of steel in accordance with subsection 235(1);

• (b) suitably supported and stiffened; and

• (c) fitted close to every boundary penetrated with a fire damper that is

  • (i) of the fail-safe automatic closing type, and

  • (ii) capable of being manually operated from either side of the division.

(2) A duct provided for the ventilation of an accommodation space, service space or control station may pass through a machinery space of Category A, galley or car deck space if the duct is

• (a) constructed of steel; and

• (b) insulated to an ‘A-60’ Class fire rating where it passes through the machinery space, galley or car deck space.