Air outlets are to be located at a height of 2 m above the gangway, where the distance between the outlets and this gangway is less than 3m.
Suitable portable instruments for measuring oxygen and flammable vapours shall be provided.
Where measurement in double hull spaces cannot be carried out reliably using flexible sampling hoses, fixed sampling pipelines adapted to the configuration of these spaces shall be provided.
Materials and dimensions of the fixed lines shall be such as to prevent any restriction of their function.
