OHS Code Explanation Guide

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

Section 59 Application

Subsection 59(1)

Except as described in subsection 59(4), all lifting devices with a rated capacity of 2000 kilograms or more are subject to the requirements of this Part. A lifting device is a device used to raise or lower materials or an object.

A crane is a lifting device that can move a load horizontally. Examples of cranes include the following:

  • Boom-type mobile – a self-propelled crane equipped with a boom and mounted on a chassis that is supported on either rubber tires, crawler treads or railway wheels running on railroad tracks. See Figure 6.1.

    Figure 6.1 Example of boom-type mobile crane

  • Floor operated – a crane that is controlled via a pendant or wireless control console by an operator on the floor or a platform independent of the crane.
  • Gantry – similar to an overhead travelling crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more movable legs running on fixed rails or other runway. See Figure 6.2.
    • Cantilever gantry – a gantry crane in which the bridge structure extends beyond the runway on one or both sides. Its runway may be either on the ground or elevated.
    • Portal (Whirley type) – a crane that has a boom attached to a revolving crane mounted on a gantry, with the boom capable of being raised or lowered at its head i.e. outer end. Portal cranes may be fixed or mobile.
    • Semi-portal – a portal crane mounted on a semi-gantry frame instead of a gantry frame.
    • Semi-gantry or single leg – a gantry crane with one end of the bridge rigidly supported on one or more moveable legs, running on a fixed rail or runway, the other end of the bridge running on an elevated rail or runway.
    • Yard crane – rubber tired gantry crane.

    Figure 6.2 Example of a gantry crane

  • Jib – a fixed crane consisting of a supported vertical member from which extends a horizontal swinging arm carrying the hoisting mechanism. See Figure 6.3
    • Travelling jib – a jib crane with the vertical member running on a track, its upper end guided by a parallel overhead track.

    Figure 6.3 Example of a jib crane

  • Overhead travelling (also known as a bridge crane) – a crane on parallel elevated runways and consisting of one or more trolleys operating from a bridge operating on the runways. Operation of the travelling crane is limited to the area between the runways. See Figure 6.4

    Figure 6.4 Example of an overhead travelling crane

  • Pillar – a fixed crane consisting of a vertical member with a revolving boom supported at the outer end by a tension member.
    • Pillar jib – a pillar crane carrying a trolley.
  • Polar – a bridge or gantry crane that travels on a circular track.
  • Tower – a crane in which a boom, swinging jib or other structural member is mounted on a vertical mast or tower. See Figure 6.5.
    • Climber – a crane erected upon and supported by a building or other structure and that may be raised or lowered to different floors or levels of the building or structure.
    • Free-standing – a crane with a horizontally swinging boom that may be on a fixed base or mounted on rails.
    • Mobile – a crane mounted on a crawler tractor, truck or similar carrier for travel or transit.
    • Self-erecting – truck carrier mounted and capable of self-erection.
    • Hammerhead – a rotating, counterbalanced cantilever, equipped with one or more trolleys and supported by a pivot or turntable on a travelling or fixed tower.

    Figure 6.5 Example of a tower crane

  • Wall crane – a crane having a jib with or without a trolley and supported from a side wall or line of columns of a building.

A hoist is a lifting device designed to lift and lower loads. Examples include:

  • Simple drum hoist – a hoist with one or more drums controlled by manual clutches, brakes or ratchet and pawl on a drum and powered by hand or electricity.
  • Electric hoist – an electrically powered, motor-driven hoist, having one or more drums or sheaves for a rope or chain.

Subsection 59(1.1) Drawworks

This subsection clarifies that drawworks used in activities and auxiliary processes associated with exploring for and drilling, operating or servicing wells for gas, crude oil or geothermal energy are covered by Part 37. Drawworks on equipment used for other purposes continue to be covered by Part 6.

Subsections 59(2) and 59(3)

All requirements of this Part apply to roofer’s hoists, regardless of size, except for the load chart requirements (section 63) and the log book provisions (sections 64(4) and 65).

This subsection prohibits the use, for vertical lifting, of devices not designed or intended for vertical lifting. This includes load binders, ratchet-drive pulleys (commonly known as “come-alongs”), grip-action devices (commonly known as “tirfors”), etc. These units are typically designed for pulling only in a horizontal plane and are not to be used for vertical lifting unless complying with relevant provisions of Part 6 and specifically defined for vertical lifting in a manufacturer’s specifications.

Subsection 59(4)

Subsection 59(1) states that this Part only applies to lifting devices with a rated load capacity of 2000 kilograms or more. Subsection 59(4) overrides this requirement with respect to the marking of rated load capacity. Knowing the load capacity of a lifting device is vital to preventing it from being overloaded. Subsection 59(4) requires all lifting devices with a rated load capacity of less than 2000 kilograms to have their rated load capacity shown on the equipment.