Uncontrolled scope change is unplanned work and this is a failure of either planning, reliability engineering, or management. Scope Change Management countermeasures include:

• Scope freeze, scope change cutoff
• Single point of authority to add/drop/change scope
• Risk-based decision making on ‘found’ or ‘discovered’ work
• Cost and duration offsets
• Post shutdown root cause analysis and corrective action

So, when scope change happens we celebrate because this is an opportunity to learn and improve.

For part shortages, we pre-stage and confirm parts be fore needed.

For ‘found work’, we freeze the scope.

Over runs and delays can happen, and so the turnaround plan has a single delay buffer.