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    NEW GUIDANCE ON UNINTENDED PLANT MOVEMENT

    Industry Plant Safety Group highlights hazards and key control measures

    The Strategic Forum Plant Safety Group (SFPSG) has released a new publication on plant safety entitled – Reducing Unintended Movement of Plant – Managing Exposure to Consequential Risks.

    Unintended movement of plant machinery occurs when inadvertent operation of a control such as a switch, lever or pedal occurs, causing unintended machine movement which can potentially cause serious injuries and fatalities.

    The new publication, which has been developed in conjunction with HSE provides guidance on a range of control measures to help prevent this from happening.

    The SFPSG is chaired by the Construction Plant-hire Association (CPA) with membership from the HSE and many other industry bodies and significant representation from major construction companies.

    The guidance adds to current suite of Plant Safety Group publications on various topics.

    Awareness of hazards and control measures

    HSE commissioned a report published in 2014 on inadvertent operation of excavator controls which supported the notion that users of plant need to be made aware of the hazards and control measures required to mitigate consequential risks.

    The working group was therefore formed to identify the causes and provide guidance on suitable control measures. The group identified that in principle, inadvertent operation occurs through:

    1. Unknowing operation – the operator unknowingly activating a control lever
    2. Unexpected consequence – the operator intentionally activating a control lever but a different action occurs to what they expected
    3. Unauthorised modification –  the operator (or other) bypassing or defeating a safety system

    The group additionally recognised that mechanical malfunctions have the potential to cause inadvertent or partial operation but agreed that this subject area would not form part of the guidance being a maintenance issue.

    In identifying and documenting actions to help manage the exposure to the consequential risks of unintended movement, the following topics are covered within the guidance:

    • Planning of the task and the selection of plant
    • Attributes of personnel, supervision and training requirements
    • Control of the working zones and those within the area
    • Communication
    • Types of operating controls and means of isolation
    • Selection and fitting of additional control measures, including clothing specifications
    • Checks, inspections and maintenance requirements

    A large number of case studies of actual incidents have been documented in the guidance and included is an analysis of the causes, consequences and outcomes of each, for which there are often a number of causal factors. This emphasises how incidents have occurred and how they could have been prevented.

    Sector urged to act on new guide 

    Plant manufacturers were represented at the meetings of the working group with an intention that they would subsequently design out potential inadvertent operation and risks during the development of new machines. This latest publication encompasses all plant types including those operated through a remote control unit.

    CPA Director Kevin Minton said:

    “If construction plant moves unexpectedly, then anyone close to it is at risk of being seriously injured or killed. This new publication gives guidance on a range of control measures to prevent this happening. Drivers, people working near plant, supervisors and contractors all have a part to play.

    We urge all those in the construction sector and those involved with the operation of plant and machinery to implement the many recommendations in order to maintain safe plant activities.”

    CPA Technical Manager Peter Brown, who project managed work on the guidance said:

    “We’re pleased that this important and comprehensive piece of work is now complete, and I’d like to thank CPA Consultant Tim Watson, the working group and their organisations for their hard work and continued support in producing this guidance.”

    The Strategic Forum Plant Safety Group is also planning to produce a condensed version of the publication which could be used as part of a training package for operators and for those working with or near to plant.

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