12. (1) The diving supervisor for a diving operation shall have proof of his or her training and his or her diving log book or equivalent statement of diving experience at the dive site and available for inspection by an inspector. O. Reg. 32/14, s. 11 (1). (2) The diving supervisor for a diving operation shall be present at the dive site and shall be in direct control of the diving operation whenever the diving operation is being carried out. O. Reg. 629/94, s. 12 (2); O. Reg. 32/14, s. 11 (2). (3) The diving supervisor for a diving operation shall, (a)  ensure that the operational plan and the contingency plan for the diving operation are followed; (b)  brief the workers associated with the diving operation on the operational plan, the contingency plan and the procedures to be followed during the diving operation; (c)  ensure that each diver participating in the diving operation is competent and fit to perform the work; (d)  ensure that each diver has his or her diving log book at the dive site and available for inspection by an inspector; (e)  immediately before each dive, review the nature of the hazards that could be encountered in the underwater work site and brief divers on those hazards; (f)  ensure that any diving equipment to be used in the diving operation is examined by a competent person at least once on each day on which it is to be used, before the use, and is tested and repaired as appropriate; (g)  ensure that, whenever the diving operation is being carried out, adequate warning devices are displayed to indicate the area around the dive site that is to be kept clear of any equipment other than that associated with the diving operation; (h)  except in the case of a health or safety emergency, ensure that a diver is not permitted to remain at any depth longer than the maximum time planned for the depth of the dive; (i)  supervise all decompression and therapeutic recompression in strict accordance with adequate decompression procedures and tables; (j)  terminate or interrupt the diving operation if continuing the operation may endanger the health or safety of any worker. O. Reg. 629/94, s. 12 (3); O. Reg. 32/14, s. 11 (3). (4) The diving supervisor for a diving operation shall supervise the standby divers associated with the diving operation and, in particular, shall, (a)  ensure that an adequate number of standby divers are present and properly positioned at the dive site or submersible compression chamber so that each submerged diver can be reached as quickly as possible in the event that he or she needs to be rescued; (b)  ensure that no person is permitted to act as a standby diver unless he or she is adequately trained, having regard to the depths and circumstances in which the standby diver would have to operate should a rescue become necessary; (c)  ensure that each standby diver is adequately dressed and has adequate diving and communication equipment checked, ready and at hand, having regard to the depths and circumstances in which the standby diver would have to operate should a rescue become necessary; (d)  ensure that each standby diver is equipped with a lifeline or umbilical bundle that is at least 10 feet longer than the lifeline of any submerged diver the standby diver might need to rescue; (e)  ensure that no standby diver is assigned any duties other than, (i)  duties of standby diver, (ii)  where the standby diver is also acting as diving supervisor, duties of diving supervisor, and (iii)  duties of communicating with a submerged diver; and (f)  ensure that no standby diver dives or leaves the submersible compression chamber except in the event of a health or safety emergency. (g)-(i) Revoked: O. Reg. 32/14, s. 11 (5); O. Reg. 629/94, s. 12 (4); O. Reg. 32/14, s. 11 (4, 5). (5) The diving supervisor for a diving operation shall supervise the divers’ tenders associated with the diving operation and, in particular, shall, (a)  ensure that a diver’s tender is acceptable to each diver to be tended by him or her; (b)  ensure that no diver’s tender is assigned to any duties other than, (i)  duties of diver’s tender, and (ii)  where the diver’s tender is also acting as diving supervisor, duties of diving supervisor; (iii)  Revoked: O. Reg. 32/14, s. 11 (6). (c)  ensure that no person is permitted to act as a diver’s tender unless he or she meets the competency requirement applicable to the type of diving operation being participated in as set out in Clause 7 of CSA Standard Z275.4-12, “Competency Standard for diving, hyperbaric chamber, and remotely operated vehicle operations”. O. Reg. 629/94, s. 12 (5); O. Reg. 32/14, s. 11 (6, 7). (6) Except in the event of a health or safety emergency, a person acting as a diving supervisor for a diving operation shall not dive. O. Reg. 32/14, s. 11 (8). (7) Revoked: O. Reg. 32/14, s. 11 (8). Duties of Divers and Standby Divers