Conveyor Shutdown Planning Checklist — South Africa

Conveyor shutdowns on South African mines and plants are where planned maintenance meets tight windows, isolation rules, contractor coordination and site handover pressure. A well-briefed shutdown starts before the plant stops — with scope, spares, access, permits and sign-off understood by everyone who will turn a wrench or apply a lock. This checklist covers the planning layer: what engineering, procurement and maintenance teams should prepare before the outage, what contractors must know before they arrive, and what handover records prevent disputes after start-up.

It is written for South African industrial sites where isolation is governed by OHS Act requirements, where shutdown windows are often measured in shifts rather than weeks, and where getting a belt splice or gearbox swap wrong costs production, not only a call-back. Use this alongside your site-specific isolation and permit procedures, not as a substitute.

Pre-shutdown planning

Planning starts when you decide the work is needed, not when the conveyor stops. That gap is where you define scope, order long-lead parts, brief contractors, book cranage, arrange permits, and confirm isolation responsibility. Sites that skip this step lose days to clarification, missing spares or permit delays after the plant is already down.

Define the scope clearly

Write down what will be done, by whom, and what condition triggers a scope change. "Service the conveyor" is not a scope — it is a guess. Belt replacement, pulley re-lagging, idler changeout, drive alignment, scraper rebuild and structure inspection are different jobs with different durations, spares and trades. If inspection might reveal additional wear that extends the window, state who decides whether to proceed or defer, and document that decision.

Confirm isolation and energy sources

Under South African OHS regulations, the site remains accountable for isolation even when contractors do the work. Clarify in writing who locks out electrical supply, who drains hydraulics or pneumatics, who blocks gravity loads, and who verifies zero energy before the first hand touches equipment. If your site uses a lock-box system, explain it in the contractor brief. If hot work or confined entry is needed, state what permits apply and who signs them. Contractors who have not worked on your plant before will not guess your rules correctly.

Order spares and consumables early

Belting, gearboxes, large bearings and imported pulleys can have lead times that exceed your shutdown schedule. If possible, let the contractor inspect first so the parts list matches actual wear; on remote sites or critical conveyors, order the long-lead items early and adjust consumables like fasteners, seals and scrapers after inspection. Keep spares documentation: belt stamps, bearing numbers, gearbox nameplates and pulley drawings. Missing part numbers turn a two-day splice into a week-long wait.

Arrange access, cranage and staging

Conveyors are often in galleries, on elevated steel, underground or squeezed between other plant. Walk the route with the contractor before quoting so they see actual headroom, crane hook reach, stair width and whether a belt reel must be cut to fit the space. Contractors who quote assuming a clear pad and then arrive to find a narrow gallery will re-quote cranage and labour, or they will work unsafely. Neither outcome helps the shutdown.

If mobile cranes, forklifts or rigging gear are owner-supplied, confirm capacity, availability and operator competence. If the contractor must bring their own, state access routes, ground bearing and height limits. Cranage confusion is a top cause of shutdown overruns on South African sites.

Contractor briefing

Contractors new to your site need more than a purchase order. They need site rules, access procedures, PPE requirements, isolation and permit protocols, emergency contacts, waste disposal, and the sign-off process. Sites that assume contractors know these things discover gaps when the plant is stopped and the crew is waiting for a permit or locked out of a gate.

Site induction and access

Confirm whether contractors must complete a formal induction before starting, how long that takes, and whether it can be done online or must happen on-site. State gate hours, vehicle passes, tool and material inspection, and photography rules. Mining sites in particular have strict access control; a crew that arrives at 06:00 for a 06:00 start without prior clearance will lose half a shift to admin.

PPE and safety equipment

List mandatory PPE: hard hat, safety boots, high-vis, gloves, eye protection, ear protection, fall arrest if working at height. If your site requires specific colours, brands or expiry-date checks on harnesses, tell contractors up-front. If respiratory protection, gas monitoring or fire extinguishers are needed for the work, clarify whether the site supplies them or the contractor brings their own.

Isolation, hot work and confined space permits

Provide templates or copies of your isolation certificate, hot work permit and confined space entry form so contractors can see what information they must supply. Walk through who signs, when the permit expires, and what stops work if conditions change. If a permit-to-work system is new to the contractor, consider a toolbox talk before the shutdown rather than discovering confusion at lock-out time.

Waste and housekeeping

Conveyor shutdowns generate scrap belt, worn idlers, oil-soaked rags, welding rod ends and packaging. State where waste goes, whether skips are provided, and whether hazardous materials need manifests. Sites with ISO 14001 or zero-waste-to-landfill policies must brief contractors on segregation rather than discovering mixed waste in a general skip after start-up.

During the shutdown

Once isolation is confirmed and the contractor is on-site, the focus shifts to progress monitoring, scope changes, quality checks and documenting any deviations from the plan. South African plant managers know that a shutdown rarely goes exactly to schedule; the goal is to manage changes quickly and document them so the handover is not disputed.

Daily progress and scope changes

Hold a short progress meeting each shift: what was completed, what is behind, what spares or access issues have appeared, and whether the original scope still fits the window. If inspection reveals additional wear — belt carcass damage, pulley shell cracks, idler frame corrosion — decide immediately whether to extend the shutdown or defer that work. Ambiguity about who authorises a scope change leads to claims, delays and finger-pointing at handover.

Quality checks and photography

Photograph critical work before, during and after: belt splices, pulley lagging bonds, structure welds, coupling alignment. If a splice fails a week after start-up, those photos prove whether it was done correctly or whether the belt was damaged during commissioning. For work that will be buried under covers or cladding, photograph it before it is hidden. Sites that rely on contractor memory rather than photographic evidence lose disputes.

Weather and environment

Belt splicing, structural welding and painting are all weather-sensitive. Rain, high humidity, extreme cold (Highveld winter mornings) or wind-blown dust can stop work or compromise quality. If weather forces a delay, document it with dated photos or weather station logs. If the contractor proceeds against your advice, note that too. Weather claims are common on South African outdoor shutdowns; evidence decides them.

Post-shutdown handover

Handover is not "we are finished, please sign here". It is a documented transfer of responsibility with inspection records, test results, as-built dimensions, spare part details and any deviations from the original scope. Sites that accept verbal handovers discover missing information when the conveyor trips or when an invoice dispute arises months later.

Inspection and testing

Before removing isolation, inspect the work: belt tracking and tension, scraper clearance, guarding replaced, loose tools removed, idlers turning freely, structure fasteners tight. If hot work was done, check fire watch has been maintained for the required period. Run the conveyor unloaded first, then under light load, watching for belt wander, vibration, scraper dig-in or unusual noise. Do not load to full tonnage until you are confident tracking and alignment are correct.

Documentation and records

Collect from the contractor: signed isolation clearance, completed permits, belt splice records (vulcanising temperature, pressure, cure time), torque values for critical fasteners, alignment readings, test results, photographs of completed work, and any site instruction or scope-change forms. File these with the conveyor maintenance history. If the splice fails or a bearing seizes, you will need proof the work was done to specification.

Spare parts and consumables

Contractors often supply belting, fasteners, sealants and welding consumables as part of the job. Collect unused spares, off-cuts with part numbers visible, and packaging labels that confirm material grades. Store belt off-cuts with the splice details; if a warranty claim arises, the carcass construction must match the quote. Do not throw away evidence.

Lessons and deviations

Hold a short post-shutdown review with the maintenance team and the contractor: what went well, what delayed progress, what spares were wrong, what access or cranage assumptions failed, and what should change for the next shutdown. Write it down. South African plants that rely on institutional memory lose that knowledge when people leave. Sites that document lessons get better at shutdowns.

Common shutdown failures

Most shutdown overruns and disputes come from a small set of recurring problems. Recognising them early helps teams plan around them.

Unclear isolation responsibility

Site assumes the contractor will lock out; contractor assumes site isolation is complete before they arrive. Work stops while both parties argue. Solution: document in the contract who applies locks, who verifies, and what the contractor must do if they find isolation incomplete.

Missing or wrong spares

Belt width is 150 mm narrower than the conveyor; gearbox model changed since the last service; bearing supplier discontinued the old part number. Shutdown extends while spares are sourced. Solution: pre-shutdown inspection and measured data, not assumptions from old drawings.

Cranage and rigging underestimated

Contractor quotes for a forklift; job needs a mobile crane. Owner-supplied crane is not available when needed; contractor-supplied crane cannot access the site. Solution: walk the site with the contractor before quoting, agree cranage in writing, and confirm availability before the shutdown starts.

Weather stops work

Vulcanising press cannot maintain temperature in a Highveld frost; structural paint will not cure in 95% coastal humidity; rain stops welding. Work pauses or quality suffers. Solution: check historical weather for your shutdown month, have a weather plan (shelter, heaters, dehumidifiers), and document any delays with dated evidence.

Briefing suppliers for shutdown quotes

When requesting shutdown quotations via the quote form, include:

• Scope: Belt replacement, pulley lagging, idler changeout, drive alignment, structure repair — be specific, not "service the conveyor".
• Shutdown window: How many shifts or days are available, and whether the window is fixed or flexible.
• Site location: Suburb or mine name, so suppliers can price travel, accommodation and whether remote-site allowances apply.
• Access and cranage: Gallery, elevated, underground, outdoor; owner-supplied or contractor-supplied lifting gear.
• Isolation and permits: Whether the contractor must bring competent persons, hot work or confined space training, and electrical CoCs.
• Spares: Owner-supplied or contractor-supplied, and whether inspection before ordering is possible.
• Handover requirements: What documentation, test results and photography you expect at completion.

Suppliers who see a detailed brief can price the job accurately. Suppliers who receive a vague "shutdown in March" note will either ignore the request or quote high to cover unknowns.

FAQ

Who is responsible for isolation during a contractor shutdown?

The site remains accountable for isolation under South African regulations. Clarify who applies locks, who verifies zero energy, what permits are required, and how the contractor proves competence before work starts. Unclear isolation is a safety and legal failure.

Should we order spares before or after the contractor inspects the conveyor?

If possible, let the contractor inspect first so the parts list matches actual wear. On remote or high-criticality sites, order long-lead items like belting or gearboxes early and adjust the minor consumables after inspection. Missing spares extend shutdowns; wrong spares waste budget.

How do we brief contractors who have not worked on our site before?

Cover site access, PPE, isolation procedures, hot work permits, confined spaces, lift plans, waste disposal and your handover sign-off process. Document the briefing so there is a record if work is stopped or an incident occurs. Assumptions fail; briefings prevent surprises.