Singapore legislation
Regulation 16
of Workplace Safety and Health (Confined Spaces) Regulations 2009
Regulation 16
Periodic testing of atmosphere
Subregulation 1
It shall be the duty of the responsible person of a person entering or working in a confined space to ensure that —
the atmosphere in the confined space is tested by a confined space safety assessor at such intervals as is necessary to evaluate the safety and health of the person entering or working in the confined space;
if there are 2 or more persons present in the confined space, at least one of them continuously monitors the atmosphere in the confined space with a suitable gas detector; and
if a hazardous atmosphere in a confined space is detected by the tests or continuous monitoring referred to in sub-paragraphs (a) and (b) —
all persons in the confined space shall vacate the confined space immediately;
an evaluation is made to determine how the hazardous atmosphere developed; and
no person re-enters the confined space until a new confined space entry permit is issued by the authorised manager for the confined space.
Subregulation 2
It shall be the duty of the confined space safety assessor referred to in paragraph (1)(a) to record the results of the tests referred to in that paragraph.
Subregulation 3
It shall be the duty of the responsible person to ensure that each of the records referred to in paragraph (2) are kept for not less than 2 years from the date it is made.