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Simulated workplace
Scenario · Plant and Maintenance

Isolate the primary jaw crusher for a liner change

You are a maintenance fitter and permit holder at Wattle Creek Quarry.

Intermediate3 to 4 hours8 tasks
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The situation

What has happened

The primary jaw crusher CR01 at Wattle Creek is scheduled for a liner change on 17 September 2026 with a crew of three. The Maintenance Superintendent wants the isolation permit raised in the Permit to Work and Isolation Register, every energy source identified from the isolation drawing, a job hazard analysis prepared with the crew and the lock box process explained before she issues the permit. A guard was found missing on conveyor CV03 after a belt change earlier in the month, so the return to service check is under scrutiny. The crusher has electrical, hydraulic and gravitational energy sources and a feeder upstream that must also be locked.

Your brief. Plan and document the isolation of CR01 to the Isolation and Permit to Work Procedure: identify energy sources, raise the permit, prepare the job hazard analysis with the crew, explain the lock box and test for dead steps, and set out the return to service checks including guarding.
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Tasks

Deliverables

  • Energy source and isolation point table
  • Isolation permit raised in the register
  • Completed Job Hazard Analysis Form
  • Return to service checklist and permit closure

Documents to use

Systems to use

Permit to Work and Isolation Register

Permits for isolation, confined space, hot work, working at heights and excavation, with the isolations applied, the crew and the permit status.

Mobile Plant and Prestart Register

The fleet list with each machine's prestart inspections, defects, service status and whether it is available for operation.

Hazard and Incident Register

The register of hazards, near misses, high potential incidents, injuries, environmental events and complaints with investigation status and corrective actions.

For trainers and assessors

Units of competency

Current on training.gov.au for the Resources and Infrastructure Industry Training Package as at 10 September 2026.

RIISAM202EIsolate and access plant
RIISAM307EService and maintain crushers
RIIRIS301Apply risk management processes
RIIWHS201EWork safely and follow WHS policies and procedures

Qualifications

RII30420Certificate III in Resource Processing
RII30120Certificate III in Surface Extraction Operations
Assessor notes

What to look for

Evidence guide

Evidence must show every energy source identified, including the upstream feeder and stored hydraulic pressure, a permit that matches the procedure, and a job hazard analysis built step by step with the hierarchy of controls. Check the student knows that only the person who applied a lock removes it, that late arrivals are added to the permit and lock on, and that guards are confirmed before return to service.

The student's evidence summary lists every record they created or changed in the systems named above, their notes and the tasks they ticked. Verify it against the deliverables and your own assessment tool.