Hiring heavy diesel (HD) mechanics for a planned shutdown takes more than filling roster slots. The crew needs the right equipment experience, verified competencies, site access and a clear work scope to complete jobs safely within a limited maintenance window. For mining, civil, farming and transport operations across Western Australia, confirming these details early helps reduce mobilisation delays and avoidable downtime.
Use this checklist when preparing a shutdown labour request or assessing a maintenance contractor. Requirements vary by site, equipment and task, so confirm the specific standards and approvals that apply to your operation.
1. Match mechanic experience to the equipment and work scope
Start with a clear list of assets, reported faults and planned work. Heavy diesel experience is important, but it is also worth confirming whether candidates have worked on equipment similar to yours and completed comparable shutdown tasks.
- Identify the equipment make, model and component involved.
- Describe the work required, such as scheduled maintenance, fault diagnosis, component changeouts or breakdown repairs.
- Ask about relevant experience with heavy mobile plant, trucks or site-specific equipment.
- Confirm familiarity with technical manuals, service procedures, diagnostic tools and reporting requirements where relevant.
- Check whether the work also needs auto electricians, hydraulic support, fabrication or other specialist trades.
Use the actual work scope to decide the crew mix. A team with the right number of people but the wrong skill coverage can still cause delays.
2. Verify qualifications, competencies and site requirements
Before mobilisation, confirm the qualifications, task-specific competencies and evidence required by the employer, principal contractor and site. Check any licences, high-risk work licences, permits or equipment authorisations relevant to the tasks being assigned. Requirements differ depending on the job, equipment and jurisdiction, so do not assume the same documents are sufficient for every shutdown.
Also check site induction status, medical or fitness-for-work requirements where applicable, and whether any refresher training must be completed before the worker can access the work area. Keep a record of what has been verified and who is responsible for any outstanding approvals.
3. Confirm shutdown dates, rosters and fatigue controls
Share the planned shutdown window, start and finish times, shift pattern, handover arrangements and expected work hours before confirming the crew. For regional and FIFO operations, make mobilisation dates and travel arrangements explicit. Confirm where workers need to report, who will meet them on site and what happens if flights, transport or site access are delayed.
Agree on realistic shift coverage and rest arrangements in line with the site’s rules and applicable requirements. A schedule that depends on unplanned extra hours or assumes every task will go perfectly can create safety risks and put the completion date at risk.
4. Set the scope, priorities and completion criteria
Give the contractor an asset list and task register with priorities, work instructions and any known defects. Separate must-complete work from tasks that may be deferred if time or parts become constrained. Identify dependencies, such as isolations, access equipment or another trade needing to finish first.
Define what completion means for each task. It may include inspection records, measurements, service sheets, diagnostic results, functional checks or sign-off by an authorised site representative. Agree how additional defects discovered during the shutdown will be documented, quoted if needed and approved before extra work proceeds.
5. Check safety systems and site readiness
Confirm the contractor understands the site’s safety management system and the controls required for the work. Depending on the task, this can include risk assessments, job safety analysis or safe work method statements, permits to work, isolation and lockout/tagout procedures, control of stored energy, lifting plans, exclusion zones and emergency arrangements.
Clarify who is responsible for isolating and releasing equipment, issuing permits, conducting pre-start meetings and coordinating work with operations and other contractors. Ensure the work area, access routes and necessary support equipment will be ready when the crew arrives. Work should not start until the required approvals and safety controls are in place.
6. Confirm tools, parts, consumables and support
Ask who will provide tools, diagnostic equipment, lifting gear, consumables and replacement components. Confirm that specialist tooling is suitable for the assets and work scope, and that parts have been checked against the correct equipment details. For critical or long-lead items, agree what contingency options are available if delivery is delayed or inspection reveals additional damage.
Also clarify the contractor’s mobilisation requirements, accommodation and transport arrangements where relevant, access to site facilities, and who supplies PPE. Clear responsibilities help prevent duplicated orders or a crew arriving without what it needs to begin.
7. Agree on supervision, communication and progress reporting
Nominate a site contact and contractor lead, and establish when progress updates will be provided. A short daily review can cover work completed, tasks in progress, parts and access issues, new defects, safety concerns and decisions that could affect the schedule.
Use an agreed process for escalating delays or scope changes. Record who approved additional work and how the change affects labour, materials and the shutdown finish time. This helps maintain a shared view of progress across operations, maintenance and contractor teams.
8. Plan handover before the crew starts
Before work begins, agree how completed tasks will be inspected, tested and signed off. Handover records should identify the equipment, work performed, parts fitted, inspection or test results, remaining defects and recommended follow-up maintenance. Confirm any restrictions or monitoring instructions that operations must know before using the equipment.
At the end of the shutdown, review actual hours, completed scope, delays and lessons for the next maintenance window. This information can improve future workforce planning and make later shutdown estimates more realistic.
HD mechanic support for shutdowns across WA
A practical hiring checklist covers suitable equipment experience, verified competencies, site induction, roster and mobilisation, safety controls, a defined work scope, tools and parts, reporting and documented handover. Confirm these items with the contractor before the shutdown begins and revisit the plan if the scope or site conditions change.
Merge Mechanical Services supports heavy-equipment maintenance across Perth and regional WA, including shutdown support, heavy diesel mechanical work, scheduled maintenance and component changeouts. Crew availability, required competencies and mobilisation details should be confirmed against your specific scope and site requirements.
Learn more about Merge Mechanical Services and its maintenance support, or call 1300 063 743 to discuss your shutdown requirements.
MERGE MECHANICAL PTY LTD
Workshop: 4 Lakewood Cove, Kenwick WA 6107
Phone: 1300 063 743
