Tackle Regulations

• • 1 (1) Every winch with the whole of the gear accessory thereto (including derricks, goose-necks, eye plates, eye bolts or other attachments) shall be tested with a proof load that shall exceed the safe working load as follows:

    Safe Working Load	Proof Load
    Up to 20 t	25 per cent in excess
    20-50 t	5 t in excess
    Over 50 t	10 per cent in excess

  • (2) The proof load shall be lifted with the ship’s normal tackle with the derrick at an angle that should not be more than 15 degrees from the horizontal or the lowest practicable angle at which the boom can be worked; the angle at which the test was made shall be stated in the certificate of test; after the proof load has been lifted it should be swung as far as possible in both directions.

  • (3) All tests shall be carried out as required by subsection (2) by dead load, and no exception shall be allowed in the case of gear on new ships but, in the case of replacements or renewals, spring or hydraulic balances may be used where dead loads are not available and the gear being tested is not rigged for union purchase.

  • (4) Where a spring or hydraulic balance is used, it shall be one that has been calibrated to the satisfaction of an inspector not more than 12 months prior to the test, and the test shall not be regarded as satisfactory unless the indicator remains constant for a period of at least five minutes.

• • 2 (1) Every crane and other hoisting machine, with its accessory gear, shall be tested with a proof load that shall exceed the safe working load as follows:

    Safe Working Load	Proof Load
    Up to 20 t	25 per cent in excess
    20-50 t	5 t in excess
    Over 50 t	10 per cent in excess

  • (2) The proof load shall be lifted and swung as far as possible in both directions; if the jib of the crane has a variable radius, it should be tested with a proof load, as defined above, at the maximum and minimum radii of the jib; in hydraulic cranes where, owing to the limitations of pressure, it is impossible to lift a load of 25 per cent in excess of the safe working load, it will be sufficient to lift the greatest possible load.

• 3 Wire ropes shall be tested by sample, a piece being tested to destruction, and the safe working load shall not exceed one-fifth of the breaking load of the sample tested.

• 4 Chains, rings, hooks, shackles and other loose gear (whether accessory to a machine or not) shall be tested with a proof load equal to that shown against the article in the following table:

  	Article of Gear		Proof Load
  1	Chain, ring, hook, shackle or swivel	–	100 per cent in excess of the safe working load
  2	Pulley blocks Single sheave block	–	300 per cent in excess of the safe working load
  3	Multiple sheave block with safe load up to and including 20 t	–	100 per cent in excess of the safe working load
  4	Multiple sheave block with safe load over 20 t up to and including 40 t	–	20 t in excess of the safe working load
  5	Multiple sheave block with safe load over 40 t	–	50 per cent in excess of the safe working load
  6	Pitched chains used with hand-operated pulley blocks and rings, hooks, shackles or swivels permanently attached thereto	–	50 per cent in excess of the safe working load
  7	Hand-operated pulley blocks used with pitched chains and rings, hooks, shackles or swivels permanently attached thereto	–	50 per cent in excess of the safe working load

• 5 After being tested as aforesaid, all lifting machinery, with the whole of the gear accessory thereto, and all chains, rings, hooks, shackles, pulley blocks or other loose gear shall be examined, the sheaves and the pins of the pulley blocks being removed for the purpose, to see whether any part has been injured or permanently deformed by the test.

• 6 [Revoked, SOR/79-784, s. 16]

Safety Factors

• • 7 (1) For all metal structural parts used in lifting machinery the safety factor shall be as follows:

    when the safe working load is 10 t or less 5    

    when the safe working load is over 10 t 4    

    for wooden structural parts used in lifting machinery 8    

    for chains 4 ½

    for wire rope 5    

    for fibre rope 7    

  • (2) Where the Board is satisfied that the safety factors recommended by any national standards association or similar body are sufficient, such factors may be used.

  •  SOR/79-784, ss. 13 to 17
  • 1987, c. 7, s. 84(F)