Aqueos 2020 external (ROV) inspection:
The 16” oil pipeline was found to be in good condition with no visible damage or anomalies.
Aqueos inspection report, May 2020
One (1) CP test point that was installed in 2014 was found to be displaced from its location on the pipeline (this was also noted in the 2018 survey), and no damage was noted at the location (Fix #101).
Pipe‐to‐electrolyte potential values recorded were:
‐ 921 millivolts (mV) on the 6” gas pipeline
‐ 910 millivolts (mV) on the 10” water pipeline
‐ 963 millivolts (mV) on the 10” gross fluids pipeline
‐ 906 millivolts (mV) on the 16” oil pipelineAs the NACE Standard SP0169‐2013 “Control of External Corrosion on Underground or Submerged Metallic Pipelines” criterion is ‐800 mV, all readings indicate that Cathodic Potential is within specifications.
Aqueos inspection report, May 2020
Metal loss data from Baker Hughes internal inspection (12/2019):
Depth of Metal Loss | External Anomalies | Internal Anomalies |
30+% | 0 | 0 |
20-29% | 1 | 0 |
10-19% | 0 | 0 |
total | 1 | 0 |
The metal loss findings are consistent with those reported in a previous internal inspection (Baker Hughes, 11/2017).
BSEE has general authority to require pipeline inspections under 30 CFR 250.1005. BSEE, the State Lands Commission, and the operator appear to have implemented an effective inspection program for the Beta Unit.
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