21 (1) All chains, rings, hooks, shackles, swivels and pulley blocks used in hoisting or lowering shall be tested and examined by a competent person in the manner set out in Schedule I before being used.
(2) All new chains, rings, hooks, shackles and swivels used in hoisting or lowering shall be heat treated under the supervision of a competent person in the manner set out in Schedule II before being placed in service.
(3) Subject to subsections (5) and (6), all Class A chains, rings, hooks, shackles, or swivels used in hoisting or lowering shall be annealed in accordance with Schedule II, under the supervision of a competent person, at the following intervals:
(a) 12 mm and smaller gear in general use, once at least in every six months; and
(b) all other similar gear in general use, once at least in every 12 months, except that in the case of such gear used solely in cranes and other hoisting appliances worked by hand, the intervals shall be 12 months and two years respectively.
(4) For the purposes of subsection (3), the expression in general use means on 52 or more occasions in a year at the rate of once at least in each week.
(5) Where the Chairman is of opinion that, owing to the size, design, material or infrequency of use of any gear or class of gear, the requirements of subsection (3) as to annealing is not necessary for the protection of workers, he may, by certificate in writing, exempt such gear or class of gear from such requirements subject to such conditions as he thinks fit.
(6) The following classes of special gear are exempted from the requirements for heat treatment subject to the condition that such gear shall be thoroughly examined by a competent person once at least in every 12 months:
(a) plate link chains;
(b) pitched chains;
(c) rings, hooks, shackles and swivels permanently attached to pitched chains, pulley blocks, weighing machines, masts, derricks, slings or spreaders;
(d) eyebolts, hooks and swivels having screw-threaded parts or ball-bearings or other case-hardened parts; and
(e) Bordeaux connections.
(7) Chains made of malleable cast iron, also chains, rings, hooks, shackles and swivels of Class B gear and all pulley blocks shall be thoroughly examined by a competent person once at least in every 12 months.
(8) All chains, other than bridle chains attached to derricks or masts, and all rings, hooks, shackles, swivels and pulley blocks shall be inspected by a competent person immediately before each occasion on which they are used in hoisting or lowering, unless they have been inspected within the preceding three months.
(9) Subject to subsection 3(2) of Schedule II, all chains, rings, hooks, shackles and swivels used in hoisting or lowering, which have been altered or repaired,
(a) shall be heat treated before being placed in service; and
(b) shall be tested and examined by a competent person in accordance with the provisions of sections 4 and 5 of Schedule I.
(10) All pulley blocks used in the processes, which have been altered or repaired, shall, before being used, be tested and examined by a competent person in accordance with the provisions of sections 4 and 5 of Schedule I.
(11) Subject to subsection (6), gear used in hoisting or lowering that is a composite of Class A and Class B shall not be used unless the design is such that the Class A parts may be readily removed for periodic annealing.
- SOR/79-784, s. 7
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