OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 19 Powered Mobile Equipment

Section 290.2 Safety requirements

The 2009 edition of the OHS Code marks the first time that requirements specific to concrete pump trucks have been included. Their inclusion reflects ongoing safety issues with these relatively new pieces of equipment. In Alberta and British Columbia for the period 2001 to 2004, 20 incidents involving truck-mounted concrete pumping units happened, including one fatality in Alberta.

Seventeen of the reported incidents involved equipment failures and three incidents involved power line contacts. The equipment failure incidents were further classified as follows:

  • 4 failures resulted from design or manufacturing deficiencies;
  • two failures were due to inadequate inspection and maintenance; and
  • one failure was reported to be the result of unsafe operating practices.

The failures occurred in rotation drive components, an outrigger, a boom linkage, elbows, boom rods, cylinders, welded connection points, a pedestal and a king post tube failure. Most of the equipment failures were on machines that were less than one year old with many only a few months old. The incidents reported were not limited to one manufacturer.

In addition, a survey of recently reported incidents elsewhere in Canada and the United States shows that concrete pumping trucks are involved in overhead power line contacts and loss of stability due to improper placement of outriggers on unstable soil.

As a result,

(a) all load bearing components must undergo non-destructive testing at 12-month intervals,
(b) operators must visually inspect all load bearing components and safety and control devices before each use,
(c) outriggers must be extended according to the manufacturer’s instructions,
(d) no worker or other person can be positioned under a distribution boom or mast. The person handling the concrete delivery hose must therefore stand beside it or change the work process so that the worker pushes the hose as the operator booms in (rather than the common practice of pushing the hose as the operator booms out). This requirement also refers to other workers at the work site. No worker or other person can be allowed to be under the boom or mast, and
(e) the concrete pump truck cannot be moved when the distribution boom or mast is partially or fully extended, unless the truck has been designed to allow this.