C.F.R. » Title 30 » CHAPTER II—BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE INTERIOR › SUBCHAPTER B—OFFSHORE › PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF › Subpart B—Plans and Information

30 C.F.R. § 250.207

How must barrier systems be used?

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You must install and maintain a primary and a secondary barrier system (redundant barriers) to prevent a loss of containment during any operational phase of a well, flowline, pipeline, production, or riser system.