Provision of offshore and/or nearshore inspection surveys of two submarine gas transmission pipelines each approximately 200km long, Scotland to Ireland from shore to shore, and one spur and one umbilical approximately 10 km long to the Isle of Man.
The maximum water depth is approximately 130 metres. The inspection requires vessels equipped for visual inspection, acoustic examination and cathodic protection monitoring and the assessment of the disposition of the pipeline relative to the seabed.
There is also a requirement for a capability for conducting intervention tasks involving the removal of seabed debris and/or freespan rectification and maintenance capability for a subsea tee in approximately 30 metres water depth. There is a further requirement for a capability to mobilise an offshore diving spread to conduct subsea intervention tasks using divers.
Tender deadline is 05/05/2011.
[mappress] Source: Promoter, April 08, 2011; Image: integra