Planner, scheduler, long term planner: three different jobs

What a planner does

A planner turns identified work into executable work. That means scoping the job from the notification or defect, deciding the method, estimating trade hours and crew mix, identifying and reserving parts, working out isolation, permits and access, and attaching the drawings, procedures and specialist resources the job needs.

The output is a job pack a competent crew could pick up and execute without hunting for anything. The planner works ahead of the schedule window, on jobs nobody has scheduled yet, which is exactly why the role is destroyed by being pulled into today. The honest measure of a planner is not how many jobs they touched, it is how many arrived at the schedule genuinely ready.

• Scope and method, written so the job runs the same way whoever picks it up.
• Trade hours and crew mix estimated well enough to schedule against, then corrected from actuals.
• Parts identified, reserved and kitted, with lead times understood before the job is promised.
• Isolation, permits, access and any lifting or confined space requirements sorted in advance.
• Drawings, procedures, torque figures and specialist tools attached rather than assumed.

What a scheduler does

A scheduler decides what actually happens next week. That starts with an honest view of capacity: hours available by trade after leave, training, standing commitments and callout cover, not the headcount on the org chart. Ready work is then sequenced against that capacity and against the access operations can genuinely give.

On fly-in, fly-out work that view also has to follow swings, rostered days off and fatigue limits, so capacity is best read from the roster rather than rebuilt in a spreadsheet each week. Rostering and workforce management software such as Humanz, which we partner with, keeps rosters, leave and credentials in one place the scheduler can draw from.

The schedule is published, frozen and defended, and break-in work goes through one approval path so urgency becomes a visible decision rather than a habit. A scheduler with nothing ready to schedule does not have a scheduling problem, and no amount of calendar discipline will fix it.

• Forecast capacity by trade honestly, including the hours already spoken for.
• Sequence ready work so shared constraints, cranes, isolations, permits and operations windows, do not collide.
• Negotiate access with operations rather than assuming it: a schedule the plant has not agreed to is a draft.
• Freeze and publish the week, then hold it through a single approval path for break-in.
• Report compliance against a definition that does not move between weeks.

The split in one table

Sites argue about where the boundary sits. It is worth arguing about once, then writing down, including the cases that fall between the two: parts chasing, permit lodgement, contractor bookings and who owns the job when it fails on the day.

Horizons, and where the long term planner sits

The roles separate again by horizon. A supervisor is deciding today, a scheduler is deciding next week, a planner is getting jobs ready for weeks nobody has committed to yet, and somebody has to be looking at the next twelve months. That last view is the one most commonly missing.

What the long term planner actually owns

A long term planner is not a planner with a longer list. The unit of work changes: they deal in workload, windows and commitments rather than job packs. The daily questions are whether the next twelve months of maintenance fits inside the production plan, which items have to be ordered now to exist later, whether shutdown scope is growing, and what happens to the following quarter if a major outage moves.

The role earns its keep on the constraints nobody can fix at short notice: a nine month lead time on a gearbox, a crane booking, a specialist contractor available in one window a year, a change-out that has to align with a rail closure, a wet season or a demand peak. It is also where maintenance and production stop negotiating week to week and agree a shape for the year.

• A forward workload by trade and by month, so the year is levelled rather than lumpy.
• Shutdown and outage windows agreed with production, and the scope held against each one.
• Long lead materials, rebuild exchanges and major components ordered against the plan, not the crisis.
• Contract labour and specialist services booked while the market still has capacity.
• The maintenance plan reconciled with the capital plan, so replacement and overhaul decisions are not made twice.

Shutdowns and turnarounds are a different job

A shutdown planner and a routine planner share a title and not much else. Shutdown work is built into a work breakdown and sequenced on a critical path through a fixed window, driven by a milestone schedule counting back from the start date: scope freeze, pack completion, materials on site, contractor mobilisation. Isolation and permit planning happens at a volume the routine week never sees, shifts run around the clock, and an allowance for discovery work is built in because opening equipment is how you learn what is inside it.

The stakes change the discipline. A weekly schedule that slips a day costs some tool time and a rescheduled job. A turnaround that slips a day costs a day of production plus a day of everyone mobilised for the window, which is why precision that would be over-engineering in a routine week is simply the standard here.

• A scope challenge that removes anything doable online: work that does not need the outage should not be consuming the window.
• A freeze date with a named owner and a change process, because uncontrolled late scope is the most common cause of overrun.
• Critical path logic, so everyone knows which jobs move the finish date and which have float to give.
• Resource histograms by trade and by shift, checked against what the site can physically absorb: beds, buses, laydown, cranes and permits.
• A deliberate allowance for discovery work, sized from history rather than optimism.
• A close out that captures actual hours and durations, so the next cycle estimates from evidence instead of memory.

The vocabulary changes by industry

The roles travel between industries better than the words do. What is called a shut in one operation is a turnaround, an outage, a possession or a changeover in the next, and turning up with the wrong vocabulary costs credibility faster than any technical gap.

• In mining the binding constraint is often production cover rather than labour: whether the circuit can be bypassed or the stockpile can carry the plant through the window.
• In oil and gas, inspection intervals on pressure equipment set turnaround timing, so planning starts years out and the date moves for very little.
• In manufacturing the planner negotiates with the order book, and changeovers are scheduling events in their own right.
• In utilities, outage dates carry external commitments, so a slipped window becomes a market and regulatory conversation rather than an internal one.
• In rail the scarce resource is access to the corridor, so a possession is planned like a shutdown even when the work inside it is small.
• In facilities, statutory servicing dates and building access dominate, and the evidence of completion matters as much as the completion.

Where the structure breaks down

• The planner spends the day expediting today's breakdowns, so nothing is planned and everything is scheduled.
• Scheduling from the backlog rather than the ready backlog, which fills the week with jobs that were never going to run.
• No long term view at all: every shutdown is planned from a standing start and every long lead item becomes an express freight order.
• The shutdown planner is borrowed from the weekly cycle for the three months before the window, so routine planning stops exactly when the site can least afford it.
• One measure covering both roles, so a readiness failure and a protection failure look identical on the report.

What good looks like

• The boundary is written down, including who owns parts chasing, permits and contractor bookings.
• Planning time is protected from today, in the routine and in where the planner physically sits.
• The ready backlog is counted in crew-weeks, so everyone can see whether there is enough ready work to fill a schedule.
• A named long term view exists, even if it is one person for one day a fortnight, keeping the forward load and the next shutdown scope current.
• Each role carries its own measures, reviewed together in the same weekly forum.

Common questions

Key terms

Plain-language definitions from our glossary for the concepts this article leans on.

Standards and further reading

• Best practices, metrics and guidelines for maintenance and reliability (SMRP)
• Recommended practices for planning, scheduling and cost engineering (AACE International)
• ISO 55001:2024 Asset management system requirements (ISO)
• Operations and maintenance best practices guide (US DOE Federal Energy Management Program)
• The Asset Management Landscape, third edition (GFMAM)
• Asset Management Council, Australian asset management community (Asset Management Council)

Related case studies and tools

• Work management and scheduling uplift (case study)
• Shutdown coordination platform (case study)
• Schedule Compliance Calculator (tool)

Related reading