S-2.1, r. 13 - Regulation respecting occupational health and safety

Section 312.46 Disposition versions

2012-09-01

312.46. Composition of the supply system: The system must supply the breathing mixture to the diver at the required temperature, pressure and rate.

The system must include the following components:

(1)  a main supply capable of supplying the required quantity of breathing mixture for the entire dive;

(2)  an auxiliary breathing mixture reserve at the diving station; and

(3)  an emergency self-contained breathing apparatus with sufficient breathing mixture reserve to allow the diver to resurface or re-enter a diving bell or another submersible chamber in case of emergency; the apparatus must contain the following minimum quantities:

(a)  for surface-supply diving

i.  to a depth equal to or less than 15 m, 1,415 litres at a minimum nominal pressure of 70%; and

ii.  to a depth greater than 15 m, under ice, in an environment with an obstruction or in a submerged pipe, 2,265 litres at a minimum nominal pressure of 70%;

(b)  for scuba diving

i.  to a depth equal to or less than 15 m, 368 litres; and

ii.  to a depth greater than 15 m, 850 litres.

Each component of the supply system must operate independently. An interruption of the main supply must not prevent supply from the auxiliary reserve or the emergency self-contained breathing apparatus.

O.C. 425-2010, s. 3.