Canada Oil and Gas Diving Regulations — 50
50 (1) A supervisor shall enter in the diving operations logbook referred to in paragraph 9(5)(m), for each diving operation or portion of a diving operation supervised by the supervisor, (a) the date and the time the diving operation was commenced and terminated including any time during which the diving operation was interrupted, or the date and the time at which the supervisor began the supervision and the time at which that supervision ended; (b) the name of the diving contractor, if any, who conducted the diving operation; (c) the name of the operator or the operator’s representative responsible for the diving operation; (d) the name or other designation and the location of the craft or installation from which, or other dive site at which, the diving operation was conducted; (e) the identification number of any dive supervised during the diving operation or during the period of supervision referred to in paragraph (a); (f) the name of the supervisor, the names of all other persons involved in the diving operation including those who operated any diving plant and equipment used in the diving operation, the names of the persons consulted pursuant to paragraph 39(1)(a) and the names of any other persons consulted in respect of the diving operation and the positions or titles of all the persons named; (g) the procedures followed during the diving operation; (h) the decompression table and the schedule in that decompression table that were used in the diving operation; (i) the time at which any diver involved in the diving operation and any skip, diving bell, diving submersible or ADS used in the diving operation left the surface and returned to the surface; (j) the maximum depth, bottom time, dive time and total dive time for each dive conducted during the period of supervision referred to in paragraph (a); (k) the type of diving plant and equipment and the type of breathing mixture used in the diving operation; (l) the type of discomfort, injury or illness, including decompression sickness, suffered by any person involved in the diving operation; (m) the particulars of any environmental conditions that affected or might have affected the diving operation; and (n) any other factor relevant to the safety or health of any person involved in the diving operation. (2) A supervisor shall, after completion of an entry in the diving operations logbook in accordance with subsection (1), immediately sign the entry and request the operator or the operator’s representative responsible for the diving operation to countersign the entry as soon as possible. (3) No person shall make any alteration to an entry in a diving operations logbook referred to in subsection (1) unless the alteration is initialled by the supervisor who made the entry and by the person who countersigned the entry. (4) The supervisor of a diving operation shall produce, on request, the diving operations logbook for the diving operation for inspection by a conservation engineer pursuant to paragraph 43(b) of the Act. (5) At the time there is no space for further entries in a diving operations logbook for a diving operation, or at the time the diving operation is completed, whichever occurs first, the supervisor who made the last entry in the logbook shall deliver the logbook to the diving contractor who conducted the diving operation, but, in the event of an accident in connection with the diving operation, the supervisor on duty at the time of the accident shall deliver the logbook to the operator responsible for the diving operation as soon as possible after the accident.