A turnaround is the most contractually intense period in a plant's year. Thousands of contractor hours, dozens of firms, scaffolding and equipment rentals running simultaneously, scope discovered daily as vessels are opened, and a schedule where every day of delay carries a production cost that dwarfs the labor rate being argued over. The commercial terms were agreed in a procurement cycle months earlier, under very different conditions.
The pattern that follows is familiar. Actual crew composition drifts above the agreed mix toward higher-rate categories. Overtime multipliers are applied to hours that may or may not qualify. Equipment stays on hire past the point it was used. Scope is added verbally on the deck because the unit is open and the window is short. Each decision is individually defensible and the aggregate is a variance nobody can decompose afterwards.
The agreements usually contain the controls needed to prevent this. Rate schedules, composition assumptions, change authorization procedures and audit rights are all there. What is missing is the translation into something a turnaround team can apply at the pace the turnaround actually runs.
What the agreement actually commits
Turnaround contracts bundle several distinct commitments that are enforced by different people at different times. Separating them is the first step to controlling any of them.
- Qualification and access conditions, current certifications, medical and competency records, insurance at agreed limits and safety performance thresholds, all required before an individual reaches the worksite
- Rate schedule and composition, labor categories and rates, assumed crew mix, overtime and shift multipliers, equipment rates, consumables treatment and permitted markups on subcontracted work
- Mobilization and manning commitments, the agreed manning curve, mobilization and demobilization charges, and the consequences of under-manning against the curve
- Scope change authorization, who may authorize extra work, in what form, at what value threshold, and how the pricing basis for unplanned work is established
- Closeout and warranty, demobilization obligations, documentation and as-built handover, the deadline for final invoice submission and the warranty period on completed work
The access conditions are the same ones that govern routine contractor work, and the turnaround is where they are most likely to fail because of surge hiring. The approach in contractor prequalification and MSA control for operators applies directly, with a much shorter tolerance for stale evidence.
Rate and composition disputes raised during the window are resolved quickly because both parties need the work to continue. The same disputes raised after demobilization become invoice negotiations with no operational pressure behind them, and they settle materially worse for the operator.
Controls that work at turnaround pace
Anything that requires a contract to be read during the window will not happen. The controls have to be pre-loaded, short and available to the people on shift.
- Rate card in the field, not the file. Publish the agreed categories, rates and multipliers in a form the timekeeping process checks against daily. A rate card that lives only in the executed agreement is a rate card that is not applied
- Composition tracked against assumption. Compare the actual crew mix against the mix the estimate assumed, daily. Drift toward higher categories is the single largest controllable variance and it is invisible in a total-hours view
- Qualification status at the gate. Verify certification and insurance currency as an access condition rather than a periodic audit. Surge hiring means a meaningful share of the workforce was onboarded in the preceding weeks
- Change authorization with a value threshold. Define in advance who can approve extra work at each value, and require a written record before the work starts. Verbal authorization on the deck is the normal practice and the normal cause of disputed claims
- Equipment on and off hire dated. Track hire start and end against actual use. Equipment that remains on hire after the task completes is a predictable leak and a simple one to close
A five-step preparation sequence
Step 1, Abstract the agreements before mobilization
Pull rates, multipliers, composition assumptions, authorization thresholds and closeout deadlines from every turnaround contract into one register. Do this during planning, because it cannot be done during execution.
Step 2, Verify qualification evidence at award and again at gate
Confirm certifications, insurance and safety records when the contract is awarded, then re-verify currency immediately before mobilization. The interval between the two is where most expiries fall.
Step 3, Publish the rate and authorization rules
Give the turnaround team a one-page summary per contractor covering rates, multipliers, who authorizes what, and the closeout deadlines. Brief it in the pre-turnaround meeting rather than distributing it.
Step 4, Run a daily commercial check
Reconcile hours, composition and equipment against the agreement every day during the window. Daily cadence is what preserves leverage; weekly cadence does not, and post-turnaround review has none at all.
Step 5, Close out inside the contractual deadline
Track the final invoice submission deadline and the documentation handover obligations as dated items. Claims submitted after the contractual deadline are a routine source of dispute, and so are handover packages that never arrive.
Turnaround terms where the work happens
Aavenir publishes rates, thresholds and qualification status from the contract record to the teams running the window.
The variance nobody can decompose
Most turnarounds close with a cost variance and an explanation that amounts to discovered scope. Some of it genuinely is: vessels are opened, condition is worse than assumed, and work is added. But when the variance is decomposed properly, discovered scope is usually a minority of it. The larger components are composition drift, overtime applied beyond the contractual basis, equipment hire extending past use and subcontracted work marked up above the agreed rate. These are not estimating failures and they are not contractor misconduct. They are the predictable result of running a high-tempo operation against commercial terms that nobody is checking in real time. Decomposing the variance afterwards is useful for the next turnaround and recovers very little from this one. The decomposition has to happen daily, inside the window, which requires the commercial terms to be available to the people on shift in a form they can apply in minutes. That is a contract data problem rather than a procurement one. It is also the reason turnaround lessons learned so rarely change the next turnaround: the findings arrive as a cost analysis months later, when the contracts for the next window are already being negotiated against the same assumptions. A register that captured actual composition, overtime basis and equipment utilization during the window gives the next procurement cycle something better than an estimate to negotiate from.
Control points across the turnaround lifecycle
Each phase of a turnaround has a small number of commercial control points. Missing one is recoverable; missing the phase is not.
| Phase | Control point | Evidence | Consequence if missed |
|---|---|---|---|
| Award | Rates, composition and thresholds agreed | Executed agreement with rate schedule | No basis for daily verification |
| Pre-mobilization | Qualification and insurance currency | Certificates dated within validity | Unqualified personnel on site |
| Mobilization | Manning curve against commitment | Daily headcount by category | Under-manning discovered late |
| Execution | Composition, overtime and equipment | Daily reconciliation against rate card | Variance that cannot be decomposed |
| Closeout | Final invoice and handover deadlines | Submitted package with date | Disputed claims and missing records |
Turnaround commercial control is not a question of tougher contracts. The terms are generally adequate. It is a question of whether those terms are available, in a usable form, to the people making hundreds of small commercial decisions over a few weeks under schedule pressure. Pre-loading the register, verifying qualification at the gate and reconciling daily converts the post-turnaround argument into a set of decisions already made. The broader commitment model is in our energy and mining obligation management datasheet.
For related guidance, see The operator’s guide to oilfield master service agreements, The land manager’s guide to mining royalty obligations and Decommissioning and abandonment obligation tracking.
