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Simulated workplace
Scenario · Maintenance and Engineering

Plan the silo 2 clean and confined space entry

You are a maintenance fitter in Maintenance and Engineering acting as the permit holder.

Intermediate3 to 4 hours7 tasks
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The situation

What has happened

Cement silo 2 at Yatala has a build-up on the cone that is restricting discharge, and it is scheduled for cleaning during the shutdown on 14 September. Permit PTW-26-0318 has been requested. The silo is on the confined space register. Marcus Delaney wants the job planned so that entry is avoided if possible, and if entry is required, that every control in the confined space entry procedure is in place before Rowan Fitzgerald issues the permit. The silo fill line is fed by the pneumatic tanker connection and the discharge feeds the blender weigh hopper through a rotary valve. The multi-gas detector was last calibrated in July. An apprentice will be the standby person for the first time.

Your brief. Plan the silo clean so that entry is avoided or, if unavoidable, is fully controlled: identify the isolations, prepare the job safety analysis, arrange atmospheric testing, ventilation, standby and rescue arrangements, and prepare the permit to work and confined space permit ready for issue.
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Tasks

Deliverables

  • Written assessment of whether entry can be avoided
  • Isolation list matched to the isolation schedule
  • Completed job safety analysis
  • Permit to work form with confined space details ready for issue
  • Standby and rescue briefing note

Documents to use

Systems to use

Permit to Work Register

Tracks every permit to work, confined space permit and isolation from issue to close-out.

Maintenance Work Orders

Plans and tracks preventive and breakdown maintenance on fixed plant, mobile plant and lifting equipment.

For trainers and assessors

Units of competency

Current on training.gov.au for the Manufacturing Training Package as at 10 September 2026.

MSMPER205Enter confined space
MSMPER300Issue work permits
MSMWHS217Gas test atmospheres
MSMWHS201Conduct hazard analysis
MSMSUP404Coordinate maintenance

Qualifications

MSM30116Certificate III in Process Manufacturing
MSM40116Certificate IV in Process Manufacturing
Assessor notes

What to look for

Evidence guide

The student must genuinely consider avoiding entry and document the decision. If entry is planned, look for all material and energy sources identified including the material above the entry point, atmospheric testing planned with a calibrated detector, a practical rescue plan that does not rely on the standby person entering, and a permit that is complete enough for the issuer to approve without rework.

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.