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Pipeline Safety: Request for Waiver; Rockies Express Pipeline

Notice of intent to consider waiver request.

The Rockies Express Pipeline LLC (Rockies Express) has requested a waiver of compliance from the pipeline safety regulation that prescribes the design factor to be used in the design formula for steel pipe. The waiver will allow Rockies Express to operate at hoop stresses up to 80 percent specified minimum yield strength (SMYS) in Class 1 locations.

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