image RCP can develop comprehensive Underwater Inspection Procedures to comply with 49 CFR 192.612 Underwater Inspection and Reburial of Pipelines in the Gulf of Mexico and its Inlets. The procedures include:

  • Generally accepted means of identifying water depths as well as pipe burial depths below the underwater natural bottom;
  • Criteria to determine whether pipelines being inspected meet the definition of “hazard to navigation” or “exposed underwater pipeline” as defined in 49 CFR 192.2; and,
  • Measures that could be taken by operators in the event their pipelines are determined to meet the definition of “hazard to navigation” or “exposed underwater pipeline.”

Inspection Interval Risk Model

RCP’s latest Inspection Interval Risk Model (IIRM) has been improved to include additional inspection trigger results for hazardous liquid pipelines that cross navigable waterways within Inlets of the Gulf of Mexico. We’ve also created an optional module that will incorporate risk-based evaluation for deeper water pipelines in addition to the shallow water pipelines already included in the IIRM. Several improvements have been incorporated in the Underwater Inspection Procedure based upon suggestions from PHMSA, other affected operators, and survey vendors.

RCP will study the specific external threats and consequences associated with the affected pipeline segments. These include third party intervention (such as shipping lanes, anchor patters, etc.); environmental or natural intervention; pipeline design and installation characteristics; potential HCA impacts; and release history.

The Inspection Interval Risk Model package is comprehensive and includes a results summary; a consolidated data summary; a copy of the Inspection Interval Risk Model for each pipeline segment; and, detailed maps that depict the specific aspects of the risk model inputs.