Product Overview

Summary: This Fault Finding Technique Safe Operating Procedure provides a structured, step-by-step approach to diagnosing and rectifying equipment and system faults safely and efficiently. It helps Australian workplaces minimise downtime while protecting workers from the electrical, mechanical and operational risks that commonly arise during troubleshooting activities.

Fault finding is one of the highest-risk activities carried out on plant, equipment and electrical systems, particularly when work is performed under time pressure to get operations back online. This Fault Finding Technique Safe Operating Procedure sets out a disciplined, safety-first approach to diagnosing problems, from initial symptom reporting and risk assessment through to isolation, testing, rectification and verification of correct operation. It is designed for Australian workplaces that operate machinery, process equipment, electrical systems or automated plant and need a consistent, defendable method for troubleshooting without cutting corners on safety.

The procedure helps organisations move away from ad-hoc, technician-dependent fault finding and towards a standardised methodology that can be taught, audited and continually improved. It addresses common issues such as bypassing safety interlocks, live testing without adequate controls, incomplete documentation, and poor communication between operations and maintenance. By implementing this SOP, businesses can reduce repeat faults, shorten mean time to repair (MTTR), and strengthen their WHS compliance, while also building the competence and confidence of maintenance teams and apprentices.

This SOP is particularly valuable for organisations working under Australian WHS legislation that must demonstrate they have safe systems of work for maintenance and troubleshooting tasks. It provides clear guidance on when to stop and escalate, what isolation and verification steps are mandatory, how to capture fault data for root cause analysis, and how to safely return equipment to service. The result is a safer, more reliable and more productive operation.

Key Benefits

• Reduce the risk of electric shock, arc flash and mechanical injury during troubleshooting activities.
• Standardise fault finding methods across technicians to improve consistency, quality and safety of repairs.
• Shorten equipment downtime by providing a logical, repeatable diagnostic framework.
• Ensure compliance with Australian WHS legislation and electrical safety requirements for testing and isolation.
• Improve record-keeping and fault history data to support root cause analysis and preventative maintenance planning.

Who is this for?

• Maintenance Technicians
• Electrical Fitters and Electricians
• Mechanical Fitters
• Instrumentation and Control Technicians
• Service Technicians
• Production Supervisors
• Engineering Managers
• WHS Managers and Advisors
• Facility Managers
• Apprentices and Trainees in Technical Trades

Hazards Addressed

• Electric shock from contact with live parts during testing or fault investigation
• Arc flash and arc blast when working on energised electrical equipment
• Unexpected start-up or movement of machinery due to inadequate isolation or lockout
• Exposure to hazardous energy sources (electrical, pneumatic, hydraulic, mechanical, thermal) during fault finding
• Contact with moving parts, pinch points and rotating equipment while inspecting or testing machinery
• Slips, trips and falls around open panels, temporary test setups and tools on the floor
• Burns from hot surfaces, steam lines or heated process equipment during troubleshooting
• Eye and hand injuries from using test instruments, hand tools and temporary connections
• Ergonomic strain and musculoskeletal injuries from awkward postures or overreaching into panels and machinery
• Psychosocial risks from time pressure, fatigue and production demands influencing unsafe troubleshooting decisions

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Key Concepts (Fault Types, Symptoms, Root Cause)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Required Tools, Test Equipment and Personal Protective Equipment (PPE)
• 6.0 Pre-Work Requirements and Risk Assessment (JSA/SWMS)
• 7.0 Isolation, Lockout/Tagout and Verification of Zero Energy
• 8.0 Standard Fault Finding Methodology and Decision-Making Flowchart
• 9.0 Electrical Fault Finding Techniques (Low-Voltage and Control Circuits)
• 10.0 Mechanical and Process Fault Finding Techniques
• 11.0 Safe Testing Practices (Live Testing Controls, Test Leads, Meters and Proving Units)
• 12.0 Communication and Handover Between Operations and Maintenance
• 13.0 Escalation Criteria and When to Stop Work
• 14.0 Documentation, Fault Logging and Use of Maintenance Systems (CMMS)
• 15.0 Post-Repair Verification, Functional Testing and Return-to-Service Checks
• 16.0 Housekeeping, Panel/Guard Reinstatement and Sign-Off
• 17.0 Training, Competency Assessment and Supervision of Apprentices
• 18.0 Incident, Near Miss and Recurrent Fault Reporting
• 19.0 Review, Audit and Continuous Improvement of Fault Finding Practices

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory WHS Regulations
• Safe Work Australia – Code of Practice: Managing Risks of Plant in the Workplace
• Safe Work Australia – Code of Practice: Managing Electrical Risks in the Workplace
• AS/NZS 3000:2018 Electrical installations (Wiring Rules)
• AS/NZS 4836:2011 Safe working on or near low-voltage electrical installations and equipment
• AS/NZS ISO 45001:2018 Occupational health and safety management systems
• AS 4024 series – Safety of machinery (where applicable to plant and machinery fault finding)
• Safe Work Australia – Code of Practice: How to Manage Work Health and Safety Risks