Sellafield

Sellafield

As part of the Pile Fuel Storage Pond (PFSP) decommissioning programme at Sellafield, an integrated legacy pond sludge treatment process for building B29, the Local Sludge Treatment Plant (LSTP) was designed and built by BAM Nuttall and VT Nuclear Services. The PFSP is the world's largest open-air fuel pond and Sellafield’s oldest, having begun operations in 1952.

The project brief was to design, supply, manufacture, construct, install and commission a suite of plant and equipment for the retrieval containment and thickening of sludge from the PFSP, which included:

  • 3 stainless steel buffer storage tanks
  • Thickening and sentencing tanks
  • 3 100kW canned motor type 
recirculation pumps
  • Ventilation system with High Efficiency Particulate (HEPA) Filtering
  • Control room and field cabling
  • Sampling and monitoring systems
  • Nuclear specification stainless steel pipework
  • 70 actuated 'remotely maintainable' plug valves arranged on skids
  • Compressed air, chilled / flush water systems
  • Testing and inactive commissioning

The key to the success of the project was the ability to manufacture and test systems off site. The main components were manufactured on a modular basis with pumps and valves being mounted on skids and HVAC fans, filters and controls built within iso-containers which were lifted into position once containment cells and vaults were built . Once the main components were in position it only remained to connect these together with pipework and cabling.

Paul Osborne managed the M&E design, procurement and off site construction and commissioning within a close team environment with BAM Nuttall and VT Nuclear Services.

Paul Osborne, Qintec Electrical Engineering Consultants Paul Osborne, Qintec Electrical Engineering Consultants Paul Osborne, Qintec Electrical Engineering Consultants Paul Osborne, Qintec Electrical Engineering Consultants Paul Osborne, Qintec Electrical Engineering Consultants