​​​Underwater Pipeline Crossing Surveys & Remedial Works​​

Northern Gas Networks (NGN) requires the provision of specialist river crossing survey and assessment services across its gas distribution network to monitor the condition, integrity, and ongoing safety of pipeline assets located within river crossings and associated watercourses. The scope of services includes, but is not limited to: - Determination of pipeline cover depths and profiles within river crossings. - Identification and assessment of changes to riverbeds, banks, and watercourses that may affect pipeline...