Preliminary Market Engagement - Winfrith Terrestrial Pipeline Decommissioning Reference number: Preliminary Market Engagement

Concepts

• pipelines
• thornbury
• magnox limited
• winfrith sea
• preliminary market engagement
• pipeline lifting and relaying
• current market capabilities
• terrestrial section of winfrith
• market engagement
• sea-discharge pipelines

Location

Description

Magnox Limited is currently preparing to initiate a procurement process for the removal of the terrestrial element of the Winfrith sea pipeline. Magnox wish to carry out pre-market engagement with interested suppliers to investigate the current market capabilities and gain knowledge about existing and future products and techniques which may assist informing Magnox in the development of the tender documentation. The procurement is for the removal of the 9.3km terrestrial section of Winfrith's sea-discharge pipelines (SDP) and their associated components (wash-out pits, air-valve pits, and break-pressure tanks) the segmentation of the pipeline into 5.0m sections, and the transport of the pipeline sections to the Winfrith site for temporary storage.

CPV Codes

• 42997200 - Machines for cleaning the internal surface of pipelines
• 45231111 - Pipeline lifting and relaying
• 45231300 - Construction work for water and sewage pipelines
• 45232150 - Works related to water-distribution pipelines
• 71355200 - Ordnance surveying
• 98391000 - Decommissioning services

Other Information

Magnox Limited is currently preparing to initiate a procurement process for the removal of the terrestrial element of the Winfrith sea pipeline. Magnox wish to carry out pre-market engagement with interested suppliers to investigate the current market capabilities and gain knowledge about existing and future products and techniques which may assist informing Magnox in the development of the tender documentation. This will ensure that the requirements are effectively met and delivered in a strategy that meets market capabilities and requirements. It also provides procurement awareness for suppliers regarding this requirements. Any information gathered through this market consultation exercise may inform internal business planning and any possible subsequent procurement process and will NOT be appraised in any future tender evaluation exercise. Should you wish to participate in this exercise please register your interest by contacting Neil Allsopp using the contact details listed in this notice. The procurement is for the removal of the 9.5km terrestrial section of Winfrith's sea-discharge pipelines (SDP). The twin pipelines run approximately 1.0m below ground level through predominantly arable farmland. They are constructed from Schedule 40 API 5L carbon-steel and comprise two 6"- 8" diameter 'active' pipelines contained within two 12"- 18" diameter 'low-active' pipelines leading to a concrete shore valve-house structure at Arish Mell. The outer surface of the SDP has a bitumen-asbestos glass-fibre reinforced coating. In addition to the pipeline, the removal of a large concrete break-pressure tank, six concrete wash-out pits and six brick air-valve pits is also required. The procurement shall include the following: • Removal of the entire terrestrial section of the SDP including wash-out pits, air valve pits, the break-pressure tank, cathodic protection, and the shore valve-house. • Controlled segmentation of the SDP into 5.0m sections and 'end-capping' (or wrapping) of the cut ends prior to transportation. • Stockpiling of the SDP sections at the Mx Winfrith Site. • Radiological monitoring and disposal of all demolition rubble at suitably licensed facilities. • Reinstatement of the pipeline corridor.