Plan the GT2 combustion inspection outage

What is going on

GT2 tripped on 5 September on exhaust temperature spread and the trip investigation recommends bringing the combustion inspection forward from next year to November. OUT-26-11 sits in the schedule as a proposal for nine days from 23 November with an estimate of 1.42 million dollars. The scope must be built from the open defects on GT2, the trip investigation, the inlet filter change and the thermocouple replacement. The GT1 and steam turbine outage runs from 5 October and shares the crane and the scaffold contractor. The market operator needs the availability submission and the Station Manager will approve the plan at the meeting on 24 September.

Your brief

Build the outage plan to the outage planning procedure: scope from defects and the investigation, a critical path with isolation and switching windows, a resourced schedule, a cost estimate with a deferral option, the market submission and an approval pack for the Station Manager.

Work through it

You do not need to do it all. Doing a few of these will show you what the work is like. Your ticks and notes stay on this device.

• Read the Procedure: Planning a Scheduled Outage and the Quality Management Policy, and list the inputs, hold points and approvals the outage plan must contain.
• Review Maintenance Work Orders and Defects for every open GT2 item and the trip investigation in the HSE Incident Register, and compile the scope with each item linked to a work order.
• Build the critical path for the nine day outage with daily labour, crane and scaffold needs, noting the conflict with the GT1 outage resources.
• Prepare the isolation and switching windows for the outage using the Permit and Isolation Register and the High Voltage Switching Program Template for the generator breaker and transformer.
• Prepare the cost estimate by labour, contractors, parts and consumables, and evaluate a deferral option that carries the inspection to March with the risk of another trip.
• Update OUT-26-11 in the Outage and Generation Schedule with the revised scope, dates, estimate and the status Submitted to market, and draft the availability submission.
• Prepare the approval pack for the Station Manager with the scope, schedule, cost, risks and the recommendation.
• Draft the daily outage meeting agenda and the return to service checklist that the control room will use.

What someone in this role would produce

• Scope list linked to work orders
• Critical path schedule with resources
• Cost estimate with deferral option
• Updated outage record and market submission draft
• Approval pack