Pipeline integrity management is a process for evaluating and reducing pipeline risks. The Pipeline Safety Improvement Act of 2002 required the federal Pipeline and Hazardous Materials Administration (PHMSA) to develop and issue regulations that address risk analysis and integrity management programs (IMP) for pipeline operators. In 2003, PHMSA finalized the IMP regulations which pipeline operators were required to implement the following year. As a result of these regulations, natural gas and hazardous liquids transmission companies were required to conduct baseline evaluations of pipe segments within high consequence areas (HCAs) by the end of 2012. HCAs are defined as areas where a pipeline failure would have a significant impact on public safety or the environment.
Integrity Management Program
Enable Midstream Partners implemented a robust IMP to achieve or exceed the requirements mandated by PHMSA. This program builds on an existing foundation of pipeline safety regulations covering design, construction, testing, operation and maintenance - a foundation that was laid many years ago. Enable Midstream's IMP is required for approximately 329 miles of HCA pipeline segments, but we have evaluated many times that requirement.
Our Integrity Management Program consists of seven main steps:
- HCA Identification: Enable Midstream Partners evaluates population densities each year to determine the HCAs along the pipeline system.
- Data Integration: We gather and integrate information from historical construction documents, pipeline operating history, and pipeline evaluations.
- Risk Analysis: We then analyze individual pipeline segments for exposure to threats as well as the public safety and environmental consequences of a pipeline failure.
- Evaluation: Using state of the art tools, Enable Midstream evaluates the pipeline segments for corrosion, damage or other issues detrimental to the safe operation of the pipeline segment.
- Repair: We then investigate and repair any issues found during the evaluation step to ensure the pipeline continues to operate safely.
- Minimize Risks: We utilize data integration, risk analysis, evaluations and repairs to develop actions that can be taken to minimize or eliminate future damage and/or consequences.
- Improve: Finally, we evaluate the IMP for areas of success and look for other areas on our pipeline system where improvements can be made. We incorporate these improvements into our ongoing safety initiatives and the cycle starts again.
The ultimate goal of our IMP is to protect people living, working and playing near our pipelines, as well as protecting the environment surrounding our pipelines.
- To combat internal corrosion, we run cleaning "pigs" to clean our pipelines, use corrosion inhibitors, and monitor internal corrosion using metal probes.
- To reduce external corrosion, we use cathodic protection equipment and routinely take test point readings to evaluate the pipeline's level of protection. We also perform pipeline coating surveys.
- To help prevent third party damage, we employ pipeline markers, aerial patrols, foot patrols and right-of-way clearing. In addition, Enable Midstream is fully committed to, and participates in, the 811 Call Before You Dig Program.
Enable Midstream Partners has a comprehensive Public Awareness program. We dedicate a great deal of time and resources to keeping in contact with the public, excavators, emergency responders and public officials located near our pipelines. Each year we mail hundreds of thousands of information packets to people living near our pipelines. We also have safety meetings with excavation contractors, law enforcement and fire prevention officials. In addition, we send age appropriate educational materials to the schools near our pipelines. It is our goal to partner with the officials dedicated to protecting the public.
We are a proud participant and supporter of industry efforts to continually improve pipeline safety and reliability. We are a member of Interstate Natural Gas Association of America (INGAA) and actively participate in the INGAA Integrity Management Continuous Improvement (IMCI) initiative. IMCI has set a goal of zero incidents as one of its guiding principles. Another IMCI goal is to apply integrity management principles on a much larger scale than required by current regulations. Enable Midstream Partners supports these INGAA initiatives and participates on IMCI planning teams.
We are a member of the Common Ground Alliance (CGA). CGA is a member-driven association dedicated to ensuring public safety, environmental protection, and the integrity of services by promoting effective damage prevention practices. In recent years, the association has established itself as the leading organization in an effort to reduce damages to all underground facilities in North America through shared responsibility among all stakeholders.
Enable Midstream Partners is committed to protecting the public and environment. Our dedication to safety is a reflection of our company values: Safety, Integrity, Customer Service, Teamwork and Accountability. If you need further information or have additional questions, please contact us using the Online Contact Form link at the bottom of this page.