The Enterprise Products hazardous liquid pipeline system integrity management program was developed to effectively evaluate and maintain the integrity of its hazardous liquid pipeline systems. The hazardous liquid integrity management program is designed to minimize the risks and consequences of having a pipeline failure that could impact populated areas, unusually sensitive areas, commercially navigable waterways, and surrounding environments.
Enterprise Products hazardous liquid integrity management program follows strict federal and state pipeline regulations that require companies to develop, maintain and continuously improve integrity management programs to protect high consequence areas (HCAs).
High Consequence Areas
For liquid petroleum pipelines, high consequence areas (HCAs) are defined as any of the following :
- High population areas, defined by the Census Bureau as urbanized areas.
- Other populated areas, defined by the Census Bureau as places that contain a concentrated population.
- Unusually sensitive areas.
- Commercially navigable waterways.
Unusually sensitive areas include populated areas, drinking water supplies, ecological resources, parks and forests, commercial fishing and recreation waters and other environmentally important areas.
Enterprise Products uses data from the National Pipeline Mapping System (NPMS) as well as other informational sources to identify pipeline segments that could affect HCA's. In addition to NPMS data, information obtained from routine field activities and other information sources may be used to identify additional HCA's.
When information is available from reliable sources, such as from Census Bureau maps, that population density around a pipeline segment has changed so as to fall within the definition of a high population area or other populated area per 49 CFR 195.450, the newly-identified HCA's are incorporated into the baseline assessment plan within one year from the date identified.
This process addresses the overall risk analysis/information analysis process employed to support various hazardous liquid integrity management program elements, which may include Baseline Assessment Plan development, continuing evaluation and assessment of pipeline integrity, and identification of preventive and mitigative measures.
Enterprise Products hazardous liquid pipeline integrity management personnel provide expertise in managing the risks of pipeline operations. These individuals manage the identification, assessment and mitigation of risk as it relates to pipeline design and construction, system operations and system integrity.
To assist in hazardous liquid pipeline integrity assessments, Enterprise Products uses In Line Inspection, or "smart pig" tools or other tools capable of detecting corrosion and deformation anomalies including dents, gouges and grooves and hydrostatic pressure tests for the integrity assessment of its pipelines.
This process identifies additional measures to prevent a pipeline failure and to mitigate the consequences of a pipeline failure that could affect a high consequence area, as well as to determine a required integrity reassessment interval. Additional preventive and mitigative measures will be based on available information about the integrity of each pipeline segment and the consequences of a failure. The integrity reassessment determination will be based on all available risk factors that reflect the risk conditions on the pipeline segments.
IMP Program Evaluation
Enterprise Products performs evaluations to assess the effectiveness of its hazardous liquid pipeline integrity management program to determine the program effectiveness through a set of performance metrics that provides a meaningful measure of the program's performance and effectiveness in reducing risk and protecting the high consequence areas.
Further information regarding hazardous liquid pipeline integrity management regulations can be found at: