Pipeline-inspection services

Tender description

The Contracting Entity is seeking applications from suitably experienced inspection companies to carry out offshore, near-shore and onshore inspection surveys of 2 submarine gas transmission pipelines each approximately 200 km long, Scotland to Ireland from shore to shore, and one spur and one umbilical approximately 11 km long to the Isle of Man. The network cathodic protection is provided by means of sacrificial aluminium alloy half shell bracelet anodes. The network entire lengths are either trenched, or rock-dumped in lieu of trenching. The seabed is varied and includes sand-waves towards the Scottish end. The maximum water depth is approximately 130 metres. The inspection scope requires vessels equipped for visual inspection, acoustic examination, cathodic protection monitoring and the assessment of the disposition of the pipeline relative to the seabed. The Contracting Entity is seeking applications from suitably experienced inspection companies to carry out offshore, near-shore and onshore inspection surveys of 2 submarine gas transmission pipelines each approximately 200 km long, Scotland to Ireland from shore to shore, and 1 spur and 1 umbilical approximately 11 km long to the Isle of Man.