Planning a plant shutdown in a CMMS: building the work list, staging spares and permits, and restarting on time

A planned shutdown is a scheduled stop of a plant or unit to carry out maintenance, inspection, replacement and modification work that cannot be done while it runs. A turnaround means much the same thing; the term is more common in refining. Large operators often call the whole discipline shutdown, turnaround and outage (STO).

Shutdowns are routine in process industries. On 3 October 2026, Southern Petrochemical Industries Corporation (SPIC) told the National Stock Exchange that its plants had been shut down from that day "to undertake periodical maintenance, critical equipment replacement and other activities", and that it expected to resume operations "within four weeks' time", according to SPIC's filing.

Refinery-scale turnarounds often run on dedicated software. Many mid-market plants in chemicals, fertiliser, steel processing, pharma and food plan their annual or periodic shutdown with spreadsheets and meetings, and the same problems repeat:

• Scope arrives late, after parts lead times have already passed.
• Parts are not on site when the job starts.
• Permits queue up on the first days because every job needs one at once.
• Nobody can say with confidence whether the plant is ready to restart.

Most shutdowns move through the same phases, whatever their size:

1. Scope: collect candidate jobs and decide which need the plant down.
2. Plan: turn each job into a work package with steps, people, parts and permits.
3. Prepare: order and stage parts, line up contractors, prepare permits and isolations.
4. Execute: run the jobs, track progress daily and control new work.
5. Restart and close-out: complete pre-start checks, restart, and close work orders.
6. Review: compare planned against actual and carry lessons into the next shutdown.

How far ahead each phase starts depends on plant size and on long-lead parts. A single critical spare with a long delivery time can set the date by which scope must be fixed.

Most of the work list is already in the CMMS. Pull candidate jobs from:

• Deferred and backlog work orders that need the plant down.
• PM tasks that fall due during the shutdown window.
• Statutory inspections due, such as those in our guides on statutory inspections and boiler inspections during planned shutdowns.
• Condition and predictive findings that point to a repair. Our guide to condition findings covers thresholds that raise work orders, and IBM lists "schedule the maintenance during an upcoming shutdown to avoid unplanned downtime" as one possible prescriptive recommendation.
• Safety audit findings that need downtime to close.
• Project and modification jobs.

Then challenge each job: does it need the plant down, and what is the risk if it waits? Jobs that can run with the plant on come off the list.

Finally, freeze the scope. Name one owner who approves any late addition, and record the reason for each one. A frozen list is what lets parts, permits and contractors be prepared in time.

Each job on the frozen list becomes a work package: a work order with everything the crew needs attached.

Dependencies are where the critical path comes from: the chain of jobs that sets the earliest possible restart.

Parts that arrive on day three of a two-week shutdown cost days. Before the plant stops:

• Reserve parts against each work order, so stock for the shutdown is not used elsewhere.
• Identify long-lead items early and order them before the scope freeze if needed.
• Kit parts by job, so each crew collects one set of materials.
• Check stock against the frozen work list and resolve every shortage before the stop.

Our guide to spare parts and MRO covers criticality, min-max levels and reservations.

A shutdown concentrates months of permit and contractor activity into a few days. Know each job's permit type and isolation list in advance, so permits are prepared, reviewed and ready when work starts.

Our guides to digital permit-to-work and lockout/tagout cover the procedures. In India, the permit guide refers to IS 17893:2023; in the UK, HSE's HSG250, "Guidance on permit-to-work systems: A guide for the petroleum, chemical and allied industries", is the reference guidance.

During the shutdown, the work-order status is the progress report. Review each day:

• Jobs completed, in progress and not started, against the plan for that day.
• Jobs on the critical path and whether they are on time.
• New findings, often called discovery work, such as worn parts found once equipment is opened.

Raise each new finding as its own work order and approve it against scope before work starts. On every job, record findings, measurements and photos. That record is what the next shutdown's scope is built from.

Check readiness job by job and area by area. In the US, OSHA's lockout/tagout rule, 29 CFR 1910.147, sets out what must happen before locks come off and equipment is energised. It is a useful reference:

• Inspect the work area to ensure nonessential items have been removed.
• Confirm machine or equipment components are operationally intact.
• Check that all employees have been safely positioned or removed.
• After locks or tags are removed and before start-up, notify affected employees.

Where equipment or the process has changed, more is needed. For US processes covered by OSHA's process safety management (PSM) rule, 29 CFR 1910.119, a pre-startup safety review (PSSR) is required for new facilities and for modified facilities when the change is significant enough to require a change in the process safety information. It confirms that:

• Construction and equipment meet the design specifications.
• Safety, operating, maintenance and emergency procedures are in place and adequate.
• Management of change (MOC) requirements are met for modified facilities.
• Training of each employee involved in operating the process is complete.

The same rule requires written management-of-change procedures for changes other than "replacements in kind". If a shutdown job replaces a part with something that is not like for like, treat it as a change, not a repair. These are US rules; check the requirements that apply to your plant.

• Close every shutdown work order with its findings and evidence.
• Carry deferred items forward to the next window as work orders, with the reason they were deferred.
• Update PM plans where the shutdown showed a task interval or scope was wrong.
• Update the asset history with what was found and replaced.
• Compare planned against actual for scope, hours and duration, and track it with your maintenance KPIs.

Upvantix CMMS is designed to organise the asset register, schedule preventive maintenance and complete work orders with a connected history for every piece of equipment. It is designed for deployment in your AWS environment.

For shutdown work, the relevant parts are:

• Assets and equipment: asset register, equipment hierarchy, locations, documents and history.
• Work management: work requests, work orders, priorities and status, and completion records.
• Preventive maintenance: PM schedules, maintenance planning, checklists and inspections.
• Parts and knowledge: parts and inventory, procedures, technical documents and maintenance history.
• At the point of work: assigned work, asset lookup and QR access, procedures and checklists, photos, notes and measurements, and parts and time capture.

Upvantix CMMS is maintenance software, not a dedicated shutdown or turnaround scheduling tool. It keeps the shutdown's work, parts and findings on the asset record, where the next plan starts.

Talk to us about how your shutdown work list and parts would map onto work orders and the asset record.