Underwater Pipeline Crossing Surveys & Remedial Works

Northern Gas Networks
Yorkshire and the Humber
Selective procedure
1 November 2026 to 31 October 2028

Specialist river crossing survey and assessment services across a gas distribution network, including pipeline cover depth determination, topographical and hydrographic surveys, geomorphological assessments, scour and erosion monitoring, exposed section inspections, and CIPP corrosion surveys. Includes subsequent remedial works to maintain asset safety and integrity.

Open the official notice

Awarded value: £1.1m; As published
Published: 15 September 2026
Awarded: 15 September 2026; Northern Divers (Engineering) Limited
Contract length: 24 months; Ends 31 October 2028

What the contract covers

Provision of specialist underwater pipeline crossing surveys, asset integrity assessments, and associated remedial works for gas distribution networks.

Determination of pipeline cover depths and profiles within river crossings
Identification and assessment of changes to riverbeds, banks, and watercourses that may affect pipeline integrity or stability
Confirmation of pipeline locations through topographical and hydrographic survey techniques, supported by geomorphological assessments where required
Surveying of riverbed and bank levels to identify erosion, scour, exposure, or other changes in condition
Inspection and assessment of exposed pipeline sections
Evaluation of the condition and construction of riverbeds, banks, and associated crossing infrastructure
Close Interval Polarised Potential (CIPP) Surveys and other corrosion monitoring activities where specified by NGN
Provision of remedial works arising from survey findings to maintain the safety, integrity, and operational performance of the pipeline network

Terms and requirements

Procedure: Selective procedure
Initial term: 24 months
Extensions: 12 months + 12 months + 12 months
Longest it can run: 60 months
Contract dates: 1 November 2026 to 31 October 2028
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Not stated
CPV codes: 44161400, 71351810, 71354400, 98363000

Services in this contract

Hydrographic and bathymetric surveysMain service£75k typicalRiver crossing pipeline surveys and assessment, with remedial works if needed

Lifecycle

Published
15 September 2026
Contract awardedto Northern Divers (Engineering) Limited
15 September 2026
Contract starts
1 November 2026
Contract ends
31 October 2028

The buyer

Northern Gas Networks

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The supplier

Northern Divers (Engineering) Limited

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Main buyers

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Cite this contract

Link: https://bidskim.com/tender/3867541/underwater-pipeline-crossing-surveys-and-remedial-works
Buyer reference: Not published
Open contracting ID: ocds-h6vhtk-06fa27
Last checked: 5 November 2026

Northern Gas Networks. Underwater Pipeline Crossing Surveys & Remedial Works. Contract award, 15 September 2026. BidSkim, https://bidskim.com/tender/3867541/underwater-pipeline-crossing-surveys-and-remedial-works (accessed 5 November 2026).