Offshore Pipelines Survey
Reference: BID901619 2/20/2012, Location: Africa
Category: Marine Survey
Scope of Work
The scope of work shall include but not limited to the supply of all required marine vessels, equipment, labour and supervision required to carrying out the following:
- Pipeline geographical position information, including start of pipelines coordinates, bearing and distance of each segment of the line, radii, pipeline crossing coordinates and end of pipelines coordinates.
- Pipeline orientation and gradient, pipeline depth of burial, and water depths along pipeline.
- Measurement and evaluation of the effectiveness of the Cathodic Protection systems along the pipelines, including identification and location of any sections along the pipelines where pipeline Cathodic potential is out of the protection range.
- Pipeline visual physical condition, including identification and location of pertinent pipeline features, any evidence of pipeline movement, or physical damage to pipelines.
- Seabed condition including location and evaluation of any indications of seabed disturbance (scarring), significant debris or anomalies that may present or indicate hazard to the pipelines.
- Pipeline support features including location and length of free spans.
- Cathodic Protection sacrificial anode retrofit/replacement, visual investigation of pipeline anomalies, debris removal, or pipeline span rectification.
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