Free Safe Operating Procedure (Air Line Isolation) Template

Purpose of the Free Safe Operating Procedure (Air Line Isolation) Template

Working on machinery powered by compressed air presents significant risks if not managed correctly. Stored pneumatic energy can cause unexpected movement or projectile hazards, leading to serious injuries.

This page provides a Free Safe Operating Procedure (Air Line Isolation) Template to help your organisation establish a robust system of work for controlling these hazards.

The primary purpose of this SOP is to provide a formal, step-by-step guide for safely isolating and de-energising pneumatic equipment before maintenance, cleaning, or repair tasks. It serves as a critical administrative control measure that standardises behaviour, reduces the chance of human error, and provides a clear reference for training and supervision.

Implementing documented procedures like this is a fundamental part of an effective WHS management system, helping a Person Conducting a Business or Undertaking (PCBU) meet their primary duty of care.

How to use the Free Safe Operating Procedure (Air Line Isolation) Template

This Safe Operating Procedure template is provided as a user-friendly starting point. It comes in an easily editable DOCX format, allowing you to add your company logo and specific details.

The PDF version is also included for straightforward printing and distribution.

Important: This is a template and must be customised to your specific workplace. You are responsible for ensuring the final document reflects the unique equipment, processes, and risks present in your operations.

We cannot be held liable for incidents arising from the use of an un-adapted or improperly implemented procedure.

1. Conduct a Risk Assessment

Before customising the template, perform a thorough risk assessment for the task of isolating air lines on your equipment. Identify all potential hazards, including stored energy (pressure), uncontrolled equipment movement, noise, and ergonomic risks.

Use the findings to inform the specific steps and precautions in your SOP.

2. Detail the Procedure Steps

Fill in the template with clear, sequential instructions for the entire isolation process. This must include:

• Preparation: Identifying the correct machine and isolation points.
• Notification: Informing all affected workers and supervisors.
• Shutdown: Following the normal equipment shutdown procedure.
• Isolation: Closing the designated valve or energy-isolating device. For example, the valve from the equipment detailed in a Free Air Compressor SOP Template.
• Lockout/Tagout: Applying a lock and tag to the isolation device to prevent it from being operated.
• De-energisation: Bleeding, venting, or otherwise dissipating all stored downstream pressure to achieve a zero-energy state. This is the most critical step and is often missed.

3. Document the Re-energisation Process

A safe return to service is just as important as the isolation itself. Your SOP should also detail the steps for removing locks and re-introducing energy to the system.

This typically involves ensuring all tools and personnel are clear, removing locks and tags, notifying workers that power is being restored, and slowly re-opening the isolation valve.

When to use this Safe Operating Procedure

This Safe Operating Procedure for Air Line Isolation should be used whenever a worker is required to place any part of their body in a danger zone where the unexpected release of pneumatic energy could cause harm. It is not just for major overhauls; it applies to routine tasks as well.

Common situations include:

• Performing maintenance on pneumatic cylinders or actuators.
• Replacing air hoses, fittings, or filters.
• Clearing jams in machinery with pneumatic components, such as a brake press.
• Servicing air-powered tools and equipment like a plasma cutter.
• Cleaning parts of a machine that are normally in motion.

Who should use this document

The isolation of hazardous energy must only be performed by personnel who are trained, competent, and explicitly authorised by the organisation to do so. This document should be used by:

• Authorised Personnel: Maintenance staff, fitters, electricians, and technicians tasked with performing the isolation.
• Supervisors: To verify that the correct procedure is being followed and to ensure that only authorised individuals perform the task.
• WHS Managers: As a tool for training, inductions, and risk management. The existence and correct application of such procedures are often key verification points during WHS compliance auditing.

The SOP also informs 'affected persons'—operators or other workers in the vicinity—about the process, ensuring they do not attempt to restart equipment that is locked out. By implementing a clear procedure, you build a safer, more predictable work environment. To find more templates and checklists to strengthen your safety framework, explore our complete free WHS resources library.