Pipeline Integrity

Antero Midstream established the Pipeline Integrity Program as part of its overall comprehensive asset management system, to meet and exceed safety, environmental and integrity expectations. Hazardous liquid and natural gas transmission pipelines and facilities are included in the scope of this program. The purpose of the integrity program is to protect the public, our employees and contractors, and the environment through adherence to a set of safety management, analytical, operating, and maintenance Processes.

The program framework includes five assessment categories:

Governing Factors

The pressure and flow of transported product passing through our midstream assets, along with environmental, climate, and topography in our areas of operation, are the factors that govern this program. The following regulating bodies that help govern the integrity of our regulated assets are:

  • Pipeline and Hazardous Materials Safety Administration (PHMSA)
  • Department of Transportation (DOT) 49 CFR Parts 191, 192 and 195
  • West Virginia Public Service Commission (WVPSC)
  • Public Utilities Commission of Ohio (PUCO)
  • Occupational Safety & Health Administration (OSHA)
  • National Association of Corrosion Engineers (NACE)
  • American Petroleum Institute (API)
  • American Society of Mechanical Engineers (ASME)

Program Management

Integrity management tasks are shared across many company departments including engineering, operations, HSSE and management.

Procedures and Training

Antero’s procedures and training programs support our integrity programs.

Training

  • HSSE training
  • Operator Qualifications (OQ) Program, tracked through Veriforce with
  • 81 active tasks
  • Antero Midstream has 16 internal operators trained on 46 OQ tasks
  • Antero Midstream has 3 internal OQ trainers qualified to test 40 of 46 different OQ
  • tasks with the remaining 6 tasks being testing by 3rd party trainers
  • Contractors perform the other 35 OQ tasks for Antero Midstream

Antero Midstream Operations, Maintenance, Construction Manuals, and Pipeline Integrity Management Plans

  • Internal Corrosion
  • External Corrosion
  • Maintenance & Inspection

Conservation Actions

We use the following conservation actions to assure integrity and compliance:

  • Continuous Pigging Regiment
  • Chemical Injection
  • Right-of-Way Surveys
  • In-Line Inspection (ILI) Smart Pigging
  • Corrosion Coupon Evaluation
  • Cathodic Protection
  • Valve Inspections
  • 811 Program/One Call
  • Emergency Response Plan
  • Public Awareness Program
  • Atmospheric Corrosion Inspections
  • Class Location Studies
  • Engine Emissions Testing
  • Ground Flare Inspections
  • Re-boiler Inspections
  • Pressure Safety Device Testing
  • Vessel Inspections
  • Oil and Triethylene Glycol Testing
  • Aboveground and Underground Storage Tank Inspections
  • Leak Detection and Repair (LDAR)
  • Annual Safety Device Testing

Documentation & Regulated Reporting

Antero documents and reports activities in annual reports as part of the Integrity Management Program.

Pipeline Integrity

Antero’s Integrity Management Program (IMP) is designed to meet the requirements of 49 CFR 192 Subpart O and 49 CFR 195 Subpart F & H, which are required for covered pipelines that could affect High Consequence Areas (HCAs). The purpose of the IMP is to guide actions to proactively identify and manage risks associated with pipelines such as ruptures and leaks. Through the IMP, we are committed to the structural integrity of our pipeline infrastructure. We analyze information collected on the pipeline systems to determine what measures to take to detect and prevent leaks and unintentional releases. Antero operates approximately 10.37 miles of jurisdictional natural gas transmission pipelines and 5.73 miles of jurisdictional Type A pipelines, as defined in 49 CFR Part 192. We also operate approximately 19.46 miles of jurisdictional hazardous liquid pipelines, as defined in 49 CFR Part 195.

The pipelines are located in the following areas:

West Virginia

10.4 miles of Transmission Pipelines

2.9 miles of Gathering Type A Pipelines

Ohio

1.9 miles of Gathering Type A Pipelines

19.5 miles of Hazardous Liquids Pipelines

Antero operates approximately 415 miles of non-jurisdictional gas gathering pipelines in West Virginia (308 miles) and Ohio (107 miles).

Table 11: Volume of Natural Gas Transported by Pipeline Type (SASB EM-MD-000.A)

1. Antero did not transport any volume of liquids in the hazardous liquids pipeline in 2019.

In 2019, Antero Midstream made progress on its baseline assessment plan (BAP) for jurisdictional and non-jurisdictional pipeline segments totaling up to 15 miles, or approximately 2.5%, of its total infrastructure. In 2020, Antero plans to inspect up to six jurisdictional pipeline segments that total 11 miles, or approximately 3.3% of its total infrastructure, and 42% of its jurisdictional pipeline infrastructure.

Antero performs annual evaluations of its asset management program to assess effectiveness and documents the results in an annual report. We use the evaluation process to compare current performance against past performance and develop specific goals for the program. Antero employs the following best integrity management practices: