Case Study: Aberthaw Power Station

Location: Vale of Glamorgan, Wales

Operator: RWE Npower

As part of a planned outage, Alstom, principal engineering contractor, commissioned Sureclean to complete the works associated with the cleaning of the steam turbine oil system pipework.

Sureclean Scope

Provide manpower and equipment for the completion of the following scope of workassociated with the steam turbine oil system pipework, ranging in sizes from 2" - 14" diameter, located in unit 7;

  • Pre Cleaning Camera Inspection / Survey of the complete system.
  • Removal and safe disposal of all residues from the system.
  • Cleaning of the pipework using high pressure water jetting applications.
  • Post Cleaning Camera Inspection / Survey of the complete system.

Technical Challenge

The design, complexity and configuration of the system provided engineering challenges. Accordingly an appropriate method of work encopassing isolation of the sytem and the removal of some sections, spools and valves etc. was identified. This afforded better access and allowed the system to be broken down into "mini" systems ensuring that acceptable levels of cleanliness were achieved. The lay-out of the system provided the requirement for certain aspect of the project to be undertaken under confined space entry working conditions.

Restrictions / Considerations

  • Design, complexity and configuration of the system.
  • Hazardous Environment - Confined Space Entry Working, access and egress.
  • Waste containment and transfer.
  • Critical Path Project - 5 weeks.
  • Integrated working plan to account for other actvities in the area.

Key Facts

  • Project completed without safety or environmental incident.
  • Project completed ahead of the 5 week schedule and within budget.
  • Involved 17 Sureclean personnel, dayshift and nightshift working.
  • Commendations received from the client.

Additional Information

In addition to completing the cleaning and camera inspection / survey work scope, Sureclean personnel also assisted with Alstom in the re-commissioning of the system.

Similar Projects

Following the success of the Unit 7 project Sureclean were awarded the cleaning and camera inspection / survey contract relating to the Unit 8 steam turbine oil sytem.