What will you do to make sure this pipeline project is constructed and operated safely?

Williams is a nearly 110-year-old energy company which has safely and reliably operated in Pennsylvania for more than 65 years. Williams historically has a strong safety record, and we remain above the industry safety average. For Atlantic Sunrise, we are demonstrating our commitment to safety by exceeding federal safety regulations in a number of critical areas, including:

  • Pipe material to meet and generally exceed the API-5L requirements
  • Using a 0.5 design factor for all fabricated MLV assemblies
  • Class 2 pipe to be installed in all Class 1 locations to increase the safety factor
  • 100 percent nondestructive inspection of mainline welds (for example, 49 CFR 192 requires only 10 percent of the welds to be tested in Class 1 locations)
  • Providing additional cover depth at certain locations (36 inches in Class 1 locations where only 30 inches of cover is required and 60 inches of cover under ditches of all public roads and railroad crossings where only 36 inches is required)
  • Hydrostatically testing the pipe at a maximum pressure that will exceed industry standards identified in 49 CFR 192 (1.5 times the maximum allowable operating pressure) before placing the line into service