| Description | Each pipeline has its own volume summarising the results of the survey. Volumes comprising the following chapters: Introduction, Acoustic survey with Sonarmarine, Submersible survey with Intersub, Divers survey shore approach with Mobell, Acoustic survey shore approach with Decca; Riser survey; Conclusion, and three appendices (comments on the survey results and freespans, and dive charts). Some minor annotations or other markings.
Also a Pipeline Inspection Programme for Pipeline 1, dated April 1978. With the following chapters: Installation to be inspected; Methods of inspection; Detailed 78 inspection programme; Framework for 1979/1980/1981 inspections.
Volume concerning Freespans Reduction concerning an operation carried out in February 1979. With an overview, location, chronology of operation, general procedure, drawings comparing results of submersible and divers' surveys, and conclusions. |