2022 Manitoba Workplace Safety and Health Act and Regulation

Review of entry permit
15.7(1) An employer must review and revise an entry permit when
(a) a work activity in a hazardous confined space changes;
(b) circumstances at the workplace or in the hazardous confined
space change in a way that poses a risk to the safety or health of
a worker; or
(c) any of the workers or information listed in the permit changes.
15.7(2) An employer must ensure that a worker who may be affected by a
change to an entry permit or a work activity in a hazardous confined
space is informed of the change.
M.R. 128/2019
Standby worker
15.8(1) An employer must ensure that
(a) a standby worker is designated for every hazardous confined
space; and
(b) the standby worker remains present at the entrance to a
hazardous confined space at all times while a worker is in the
space.
15.8(2) An employer must ensure that
(a) a worker designated as a standby worker is
(i) qualified as a first aider, as set out in Part 5 (First Aid), and
(ii) trained in hazardous confined space work procedures, entry
permit system requirements and emergency and rescue
procedures;
(b) the designated standby worker has a suitable system to summon
assistance if necessary; and
(c) the worker in the hazardous confined space and the designated
standby worker are able to directly communicate with each
other at all times.
M.R. 159/2018; 128/2019
Purging and ventilating unsafe atmosphere
15.9(1) In any of the following circumstances, an employer must ensure that
a hazardous confined space is purged, ventilated or both before a
worker is required or permitted to enter it:

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(a) where there is or may be a concentration of a flammable or
explosive substance present at more than 10% of its lower
explosive limit, the space must be purged, ventilated or both so
that the concentration is reduced to less than 10%;
(b) where there is or may be an oxygen deficiency — oxygen
content less than 19.5% by volume — or oxygen enrichment —
oxygen content greater than 23% by volume — the space must
be purged, ventilated or both so that the oxygen content is at
least 19.5% but not more than 23%;
(c) where there is or may be a chemical or biological substance that
creates a risk to the safety or health of the worker, the space
must be purged, ventilated or both to eliminate or reduce the
risk associated with the substance, to the extent possible.
15.9(2) When a worker occupies a hazardous confined space that has an
atmosphere that may create a risk to the safety or health of a worker,
the employer must ensure
(a) the space is continuously ventilated to maintain a safe
atmosphere; and
(b) the atmosphere is continuously monitored by a competent
person.
M.R. 128/2019