# The Merchant Shipping (Fire Protection) (Amendment) Regulations 1999, Regulation 24


For the first sentence of paragraph (3) of regulation 77 there shall be substituted:
“The number of ventilation openings in “B” Class divisions shall be kept to a minimum; such openings shall generally be provided only in the lower part doors or by utilising gaps under doors. Openings in doors shall be provided with a grille made from non-combustible material. Openings shall not be provided in a “B” Class division forming a stairway enclosure.”.

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Source: https://www.legislation.gov.uk/uksi/1999/992/regulation/24 (the official version)
Page: https://openlegislation.uk/merchant-shipping-fire-protection-amendment-regulations-1999/regulation-24
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.