Regulation 15 Precautions to prevent pressurisation of certain vesselsI1
England, Wales and Scotland
(1)
Paragraph (2) shall apply to a vessel–
(a)
which is constructed with a permanent outlet to the atmosphere or to a space where the pressure does not exceed atmospheric pressure; and
(b)
which could become a pressure vessel if that outlet were obstructed.
(2)
The user of a vessel to which this paragraph applies shall ensure that the outlet referred to in sub-paragraph (a) of paragraph (1) is at all times kept open and free from obstruction when the vessel is in use.