Isolation of Plant and Machinery

Version: 1.0

Updated: 1 December 2024

Document Summary

This Safe Work Procedure outlines comprehensive isolation protocols for plant and machinery to mitigate risks associated with hazardous energy. Isolation procedures must be developed by qualified personnel familiar with the equipment and its energy sources. Only authorized and trained individuals may place or remove isolation devices. Pre-isolation precautions include testing procedures, barricading work areas, and posting "NO ENTRY" signs to restrict access to authorized personnel only.

The basic isolation process involves identifying and de-energizing all energy sources, such as electricity, air, gas, and hydraulics, and locking out controls. Pressure lines and vessels must be bled, and mechanical parts secured to prevent movement. Personal danger tags and lockout devices must be attached by each worker, ensuring clear identification and accountability. Return-to-service protocols require the removal of all locks and tags by the individual who placed them, verifying the safety of all systems before startup. Adherence to these procedures ensures safe maintenance and repair operations.

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