13.14 Machine guards shall be operated, maintained and repaired by a qualified person.

13.15 Subject to section 13.16, where a machine guard is installed on a machine, no person shall use or operate the machine unless the machine guard is in its proper position.

• 13.16 (1) Subject to subsection (2), where it is necessary to remove a machine guard from a machine in order to perform repair or maintenance work on the machine, no person shall perform the repair or maintenance work unless the machine has been locked out in accordance with a written lock out procedure provided by the employer.

• (2) Where it is not reasonably practicable to lock out a machine referred to in subsection (1) in order to perform repair or maintenance work on the machine, the work may be performed if

  • (a) the person performing the work follows written instructions provided by the employer that will ensure that any hazard to that person is not significantly greater than it would be if the machine had been locked out; and

  • (b) the person performing the work

    • (i) obtains a written authorization from the employer each time the work is performed, and

    • (ii) performs the work under the direct supervision of a qualified person.

13.17 A copy of the instructions referred to in section 13.16 shall be kept readily available by the employer for the information of persons who perform repair and maintenance work on his machines.

13.18 Abrasive wheels shall be

• (a) used only on machines equipped with machine guards,

• (b) mounted between flanges, and

• (c) operated

in accordance with sections 4 to 6 of CSA Standard B173.5-1979, Safety Requirements for the Use, Care and Protection of Abrasive Wheels, dated February, 1979.

13.19 A bench grinder shall be equipped with a work rest or other device that

• (a) prevents the work piece from jamming between the abrasive wheel and the wheel guard; and

• (b) does not make contact with the abrasive wheel at any time.

13.20 Equipment used in the mechanical transmission of power shall be guarded in accordance with sections 7 to 10 of ANSI Standard ANSI B15.1-1972, Safety Standard for Mechanical Power Transmission Apparatus, dated July, 1972.

13.21 Woodworking machinery shall be guarded in accordance with clause 3.3 of CSA Standard Z114-M1977, Safety Code for the Woodworking Industry, dated March, 1977.

13.22 Punch presses shall meet the standards set out in CSA Standard Z142-1976, Code for the Guarding of Punch Presses at Point of Operation, dated February, 1976.