Hull Construction Regulations

239 (1) The main inlets and outlets of all ventilation systems shall be capable of being closed from outside the spaces served by the system.

(2) Subject to subsection (3), the power ventilation of accommodation spaces, service spaces, cargo spaces, control stations and machinery spaces shall be capable of being stopped from at least one place outside the space and such place shall be easily accessible and not readily isolated in the event of a fire in the space.

(3) The means provided for stopping the power ventilation of machinery spaces shall be separate from the means provided for stopping the power ventilation of other spaces.