scope:

General

This Standard applies to mast-climbing work platforms (MCWPs) that are primarily used to provide a working surface for personnel, along with their necessary tools and materials, at elevated work locations.

An MCWP typically includes the following features (see Figures 1 and 2):

(a) one or more work platforms;

(b) one or more masts that are

(i) free-standing or laterally supported above their bases;

(ii) of fixed or variable height;

(iii) vertical or inclined between 0 and 30° to the vertical; and

(iv) vertically supported only at their bottom or top;

(c) a chassis that is static or capable of transfer at a work site by self-propulsion or towing; and

(d) an elevating mechanism that is manually or power operated. Raising and lowering speeds are limited to a maximum of 0.20 m/s (0.8 ft/s).

Purpose

The purpose of this Standard is to specify minimum design, manufacturing, remanufacturing, rebuilding/ reconditioning, testing, performance, inspection, training, maintenance, and safe operation requirements for MCWPs to achieve the following objectives:

(a) prevention of personal injuries and accidents;

(b) uniformity in ratings; and

(c) understanding by manufacturers, dealers, installers, maintenance personnel, operators, owners, and users of their respective responsibilities.

MCWPs are generally intended for use over level surfaces. Normally, they are not insulated for use near electrically energized circuits, nor are they intended to be used in hazardous locations. For aerial platforms intended for use near electrically energized circuits, see CAN/CSA-C225. The operation of MCWPs is subject to certain hazards and therefore needs to be performed by competent, careful personnel trained in the intended use, safe operation, maintenance, and servicing of MCWPs.