Nova Scotia Offshore Area Petroleum Diving Regulations (SOR/95-189)

Regulations are current to 2014-08-05

Restrictions Respecting Category I Diving Operations

 No diving supervisor shall conduct a category I diving operation, other than a diving operation in which SCUBA is used, unless

  • (a) a suitable skip is used to transport the divers involved in the diving operation to an underwater work site that is 20 m or more in depth and, where practicable, to an underwater work site that is less than 20 m in depth;

  • (b) an umbilical directly from the surface or via a skip is used to supply the appropriate breathing mixture to the divers involved in the dive that is part of the diving operation;

  • (c) the supervisor is in oral communication with any divers, stand-by divers and attendants involved in the diving operation at all times during the diving operation;

  • (d) the supervisor has a means of monitoring the depth of each diver involved in the diving operation and the pressure of the breathing mixture being supplied to each diver and stand-by diver involved in the dive;

  • (e) each diver involved in the dive is securely connected to a lifeline; and

  • (f) the diving crew, for the duration of the diving operation, includes one diving supervisor, one diver and a minimum of

    • (i) one stand-by diver equipped with an umbilical at least 3 m longer than the umbilical of the diver for whom the stand-by diver acts as stand-by,

    • (ii) one attendant at the dive site of the diving operation, and

    • (iii) as many additional attendants as the supervisor considers necessary to ensure the safety of the divers involved in the diving operation.

Restrictions Respecting Category II Diving Operations

 No diving supervisor shall conduct a category II diving operation unless

  • (a) the requirements referred to in paragraphs 42(c) to (e) are complied with;

  • (b) a diving bell or diving submersible is used for any descent or ascent of a diver to or from the underwater work site of the diving operation;

  • (c) the diving supervisor has a means of monitoring the internal pressure of any diving bell or surface compression chamber or the compression chamber of any diving submersible used in the diving operation; and

  • (d) the diving crew, for the duration of the diving operation, includes one diving supervisor and a minimum of

    • (i) two divers who are in the diving bell or diving submersible used in the diving operation, one of whom is equipped with an umbilical at least 3 m longer than the umbilical of the diver for whom the stand-by diver acts as stand-by,

    • (ii) one additional stand-by diver and one attendant at the dive site of the diving operation, and

    • (iii) as many additional attendants as the supervisor considers necessary to ensure the safety of the divers involved in the diving operation.

Restrictions Respecting Category III Diving Operations

  •  (1) No diving supervisor shall, in a saturation dive supervised by the supervisor, permit the total dive time of any diver involved in the dive to exceed 31 days.

  • (2) No diving supervisor shall conduct a category III diving operation unless the diving crew, for the duration of the dive, includes the persons referred to in paragraph 43(d) and as many additional specialists and life-support technicians as the diving supervisor considers necessary to ensure the safety of the divers involved in the dive.