- Pre-survey data gathering. Assess pipeline route maps, identify potential
locations where special circumstances may apply (residential, industrial, major
road crossings, waterways, etc.)
- Interference from foreign pipelines and structures are documented acrossthe
line.
- Pipe to soil potentials are recorded at each location to assess system prior to
starting the survey.
- GPS position is recorded every 100 feet of survey distance as well as at every
pipeline feature (valve, road crossing, stream, etc.)
- Depth of cover is recorded every 75 feet of survey distance as well as at
terrain features such as edges of bodies of water, road crossings, ditches, etc.
- Any areas of right of way deficiencies, exposed pipe, damaged pipeline signage,
or right of way encroachments are fully documented with GPS location and
photographs.
- Pipe to soil potentials are recorded at a client defined interval during the
survey. Pipe to soil potential will be collected at each teststation and will
include near ground, far ground, and IR between test points. It will also be
collected at each rectifier and bond for foreign structures and pipelines.
- Final reporting will include voltage potential graphs, depth of cover, span and
exposure documentation, all photographs, and a complete listing of all readings
recorded. Pipeline survey distance will be referenced to pipelint station number
and will also carry GPS coordinates.
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