Canada Oil and Gas Diving Regulations — 38
38 (1) The supervisor of a diving operation shall be present at the diving station from which the diving operation is controlled at all times during the diving operation or during the period in which the supervisor is on duty, as the case may be, and shall (a) directly control the diving operation; (b) use, during the total dive time of the diving operation, a sufficient number of trained persons to operate the diving plant and equipment used in that diving operation; and (c) follow the relevant provisions of the applicable procedures manual for that diving operation. (2) Notwithstanding any other provision of these Regulations, the supervisor of a diving operation may, in the case of an emergency, allow or direct the use of diving techniques, equipment and procedures not permitted by these Regulations where that use provides the only available practicable means of ensuring or enhancing the safety of the persons involved in the diving operation. (3) The supervisor of a diving operation shall interrupt or discontinue the diving operation where (a) continuation of the diving operation would or is likely to compromise the safety of any person involved in the diving operation; (b) the water currents at the underwater work site of the diving operation are likely to compromise the safety of a diver or pilot involved in the diving operation; or (c) combustible material is stored too close for safety to any diving plant and equipment used in the diving operation. (4) The supervisor of a diving operation that involves the use of a diving submersible shall, where practicable, discontinue the diving operation where the unused stored electrical power of the diving submersible reaches 20 per cent of the electrical power capacity of the diving submersible, excluding the back-up capability referred to in paragraph 14(c). (5) Where the supervisor of a diving operation wishes to commence or continue the diving operation and the person in charge of the craft or installation from which the diving operation is being conducted considers that the commencement or continuation of the diving operation would compromise the safety of any person on the craft or installation or the safety of the craft or installation, the decision of the person in charge of the craft or installation respecting the commencement or continuation of the diving operation shall overrule the supervisor’s decision. (6) In the event of an accident, the supervisor of the diving operation shall (a) take such measures as are necessary to provide treatment to any person injured in the accident and to ensure the safety of the persons involved in the diving operation; (b) interrupt the diving operation or any portion of the diving operation that may have caused or contributed to the accident until the diving operation or portion of the diving operation can be safely resumed; (c) deliver the diving operations logbook referred to in paragraph 9(5)(m) to the operator responsible for the diving operation as soon as possible after the accident; (d) keep the site of the accident undisturbed until a conservation engineer has completed inspection of the site; (e) prepare a written report that contains a description of the accident, a summary of the events that led to the accident and the measures taken following the accident; and (f) deliver to the operator responsible for the diving operation the report referred to in paragraph (e).