Product Overview

Summary: This Lockout Tagout (LOTO) SOP provides a clear, step-by-step process to safely isolate, lock and tag machinery and equipment in metal manufacturing environments. It helps Australian businesses prevent unexpected energisation, crushing, entanglement and electrical incidents, while demonstrating robust WHS compliance and due diligence.

Metal manufacturing operations rely on powerful presses, guillotines, CNC machines, conveyors, furnaces and other high‑energy plant. Without a disciplined Lockout Tagout system, routine maintenance, cleaning, setup and fault‑finding can expose workers to sudden machine start‑up, stored energy release and serious, often life‑altering injuries. This SOP sets out a practical, standardised method for isolating, locking and tagging machinery before any work is carried out, tailored specifically to the hazards and workflows typical of Australian metal fabrication and manufacturing facilities.

The document translates WHS legislative duties into clear actions for supervisors, trades and operators on the floor. It covers everything from pre‑task planning and identification of all energy sources, through to application and removal of locks, verification of isolation, shift handover, group lockout and contractor management. By implementing this SOP, businesses can significantly reduce the risk of crush injuries, amputations, arc flash and entanglement events, while also providing defensible evidence of compliance during regulator inspections, incident investigations and audits. The result is a safer, more controlled maintenance environment, improved communication between production and maintenance teams, and a consistent approach across all sites and shifts.

Key Benefits

• Prevent unexpected energisation, movement or release of stored energy during maintenance, cleaning and setup tasks.
• Ensure consistent, site‑wide Lockout Tagout practices that align with Australian WHS legislation and industry expectations.
• Reduce the likelihood of serious injuries such as amputations, crush incidents, electric shock and entanglement.
• Strengthen communication and accountability between operators, maintenance personnel, contractors and supervisors.
• Provide clear, auditable evidence of isolation procedures for inspections, incident investigations and internal WHS audits.

Who is this for?

• WHS Managers
• Production Managers
• Metal Fabrication Supervisors
• Maintenance Supervisors
• Mechanical Fitters
• Industrial Electricians
• Machine Operators
• Health and Safety Representatives (HSRs)
• Engineering Managers
• Plant Managers

Hazards Addressed

• Unexpected start‑up of machinery during maintenance or cleaning
• Release of stored mechanical energy (springs, suspended loads, flywheels)
• Release of stored pneumatic or hydraulic pressure in lines and cylinders
• Exposure to live electrical energy and arc flash during electrical work
• Contact with moving parts leading to crush, entanglement or amputation injuries
• Release of thermal energy from furnaces, ovens or heated process lines
• Uncontrolled release of gases, steam or process fluids under pressure
• Inadvertent energisation by remote or automated control systems
• Contractor and multi‑trade interface risks during shutdowns and overhauls

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions (Lockout, Tagout, Isolation, Stored Energy, Group Lockout, Zero Energy State)
• 3.0 Roles and Responsibilities (PCBU, Officers, Supervisors, Workers, Contractors)
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Plant and Energy Source Identification in Metal Manufacturing
• 6.0 Required Tools, Devices and Personal Protective Equipment (PPE)
• 7.0 Pre‑Task Planning and Risk Assessment for Isolation Activities
• 8.0 Step‑by‑Step Lockout Tagout Procedure
• 9.0 Verification of Isolation and Zero Energy State
• 10.0 Group Lockout, Shift Handover and Contractor Management
• 11.0 Removal of Locks and Tags and Return to Service
• 12.0 Managing Exceptions, Difficult‑to‑Isolate Plant and Temporary Bypass Controls
• 13.0 Training, Competency and Authorisation Requirements
• 14.0 Inspection, Audit and Continuous Improvement of LOTO Practices
• 15.0 Incident Response, Reporting and Corrective Actions Related to Isolation Failures
• 16.0 Document Control, Recordkeeping and Review

Legislation & References

• Work Health and Safety Act 2011 (Cth and relevant state/territory variants)
• Work Health and Safety Regulation 2011 (plant and energy isolation provisions)
• 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 4024.1603: Safety of machinery – Design of controls, interlocks and guards – Prevention of unexpected start‑up
• AS/NZS 4024.1201: Safety of machinery – General principles for design – Risk assessment and risk reduction
• AS/NZS 4836: Safe working on or near low‑voltage electrical installations and equipment
• ISO 45001: Occupational health and safety management systems (as adopted in Australia)