OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 6 Cranes, Hoists and Lifting Devices

Section 96 Safety code for personnel hoists

CSA Standard CAN/CSA-Z185-M87 (R2006), Safety Code for Personnel Hoists, applies to structures and hoists that are not a permanent part of buildings, structures, or other work and that are used during construction, alteration, or demolition to raise and lower persons and/or materials connected with or related to a building project. The Standard covers the design, construction, installation, operation and acceptance inspection and testing of personnel hoists. See Figure 6.29.

Figure 6.29 Example of a personnel hoist

The Standard does not apply to:

(a) hoists for raising and lowering materials and that are not intended to carry personnel;
(b) temporary elevators installed in their hoistways during the construction of buildings and incorporating a part of the permanent elevator to be installed later;
(c) manlifts, counterbalanced or endless-belt type;
(d) mine elevators;
(e) cranes and derricks;
(f) window cleaners and swingstages;
(g) mobile forklift trucks and similar equipment;
(h) rope-guided and non-guided personnel construction hoists.

The following are some critical requirements of the Standard:

  • Part 6 Hoistway Enclosure: The “hoistway” is the shaftway space travelled by the car or counterweight extending from the pit floor to the overhead structure. A “hoistway enclosure” is a structure that isolates the hoistway and on which hoistway doors are installed. Figure 6.30 shows the design requirements that a hoistway enclosure must meet.

    Figure 6.30 Example of a hoistway enclosure (plan view)

  • Part 7 Hoistway landings and doors: This part describes requirements for that portion of a floor, a balcony or platform used to receive and discharge passengers.
  • Part 8 Cars: This part describes requirements for the load-carrying unit. The car’s rated load capacity is based on its inside net platform area, determined using the “a” and “b” measurements shown in Figure 6.31. The maximum allowable number of passengers is determined by:
    (a) multiplying the net inside area of the car, in square metres, by five, or
    (b) dividing the net inside area of the car, in square feet, by two.

    Figure 6.31 Net inside area of the car (plan view)

  • Part 11 Counterweights: This part describes the design and guiding requirements for counterweights.
  • Part 14 Operation and control devices: This part describes requirements for the actuating controls.
  • Part 19 Safeties and governors: This part describes requirements for devices to stop and hold the car in case of overspeed or free fall or if the hoisting rope slackens.
  • Part 20 Drive, machines, sheaves, drums: This part describes requirements for the hoist’s drive mechanism. Maximum car speeds are:
    (a) 1.75 metres per second for traction machines and winding drums machines;
    (b) 0.75 metres per second for single-speed operation;
    (c) 1.60 metres per second for rack and pinion machines;
    (d) 0.75 metres per second for inspection purposes.
  • Part 23 Communication: A two-way voice communication system between all landing entrances is required.
  • Part 24 Required inspections and tests:

(1) Before being placed into service, a hoist must be inspected and tested after it has been installed or when:

(a) the mast is extended,
(b) entrances are added,
(c) hoisting ropes are changed, and
(d) a rack section is added or changed.

The tests must include:

(a) operation of drive machine brakes;
(b) plunger-return and load/speed of buffers, except bumpers or spring buffers;
(c) operation of car safeties and governors;
(d) operation of ground fault circuit interrupter.

The inspections are to include:

(a) electrical grounding;
(b) wire rope; and
(c) teeth wear and clearances on rack and pinion devices.

(2) All parts of the machine and mast should be inspected daily before operations begin to ensure the hoist is in safe condition. The inspection must be conducted by a competent person and the tests must be conducted in the presence of a competent person.