312.11. Duties of the diving supervisor: Every dive must be supervised by a diving supervisor who must, in particular,(1) before performing underwater work upstream or downstream from a hydraulic structure or a hydroelectric plant, communicate with its owner. Section 312.89 applies if the work is performed in the area of influence;
(2) before each dive in seaways or port facilities, notify the authorities concerned;
(3) before each dive, prepare a dive plan that complies with section 312.31, brief the dive team members on the plan, discuss it with them and obtain their agreement;
(4) ensure that the diving equipment and installations comply with those described in this Division and are in good working order;
(5) ensure that each diver wears the required diving equipment, in particular that the standby diver’s mask or helmet and suit provide protection equivalent to the underwater diver’s mask or helmet and suit, and that it is installed correctly;
(6) ensure that each diver checks his or her equipment once in the water, before starting the dive;
(7) see to the implementation of the dive plan and to the prior setting up of any installation enabling the standby diver to take action quickly and in particular to deal with any emergency;
(8) supervise dive team members;
(9) remain on the surface unless an intervention is required because the safety of a diver is threatened and only after delegating the responsibilities of diving supervisor to a diver on the surface;
(10) designate the dive team member on the surface who is responsible for radio communication with each diver underwater;
(11) prepare and update a register of the dives supervised; and
(12) ensure that any other activity does not endanger the health or safety of the dive team members.