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

  1. Williams historically has had a strong safety record and we remain above the industry safety average. We have operated pipelines safely in Pennsylvania for more than 50 years. For the Central Penn Line, we are proposing to demonstrate our commitment to safety by exceeding federal safety regulations in a number of critical areas, including:
  • The pipe material will meet and generally will exceed the API-5L requirements;
  • Use a 0.5 design factor for all fabricated MLV assemblies
  • Class 2 pipe will be installed in all Class 1 locations in order 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 the be tested in Class 1 locations); and
  • Providing additional cover depth at certain locations (36 inches in class 1 locations where only 30 inches of cover is required; 60 inches of cover under ditches of all public roads and railroad crossings where only 36 inches is required)
  • Prior to placing the line into service, the pipe will be hydrostatically tested at a maximum pressure that will exceed industry standards identified in 49 CFR 192 (1.5 times the maximum allowable operating pressure).