30 C.F.R. § 250.1002 Design requirements for DOI pipelines.
Title 30 - Mineral Resources
(a) The internal design pressure for steel pipe shall be determined in accordance with the following formula: For limitations see section 841.121 of American National Standards Institute (ANSI) B31.8 where—
P=Internal design pressure in pounds per square inch (psi). S=Specified minimum yield strength, in psi, stipulated in the specification under which the pipe was purchased from the manufacturer or determined in accordance with section 811.253(h) of ANSI B31.8. D=Nominal outside diameter of pipe, in inches. t=Nominal wall thickness, in inches. F=Construction design factor of 0.72 for the submerged component and 0.60 for the riser component. E=Longitudinal joint factor obtained from Table 841.1B of ANSI B31.8. (See also section 811.253(d)). T=Temperature derating factor obtained from Table 841.1C of ANSI B31.8. (b)(1) Pipeline valves shall meet the minimum design requirements of American Petroleum Institute (API) Spec 6A, API Spec 6D, or the equivalent. A valve may not be used under operating conditions that exceed the applicable pressure-temperature ratings contained in those standards. (2) Pipeline flanges and flange accessories shall meet the minimum design requirements of ANSI B16.5, API Spec 6A, or the equivalent. Each flange assembly must be able to withstand the maximum pressure at which the pipeline is to be operated and to maintain its physical and chemical properties at any temperature to which it is anticipated that it might be subjected in service. (3) Pipeline fittings shall have pressure-temperature ratings based on stresses for pipe of the same or equivalent material. The actual bursting strength of the fitting shall at least be equal to the computed bursting strength of the pipe. (4) If you are installing pipelines constructed of unbonded flexible pipe, you must design them according to the standards and procedures of API Spec 17J, incorporated by reference as specified in 30 CFR 250.198. (5) You must design pipeline risers for tension leg platforms and other floating platforms according to the design standards of API RP 2RD, Design of Risers for Floating Production Systems (FPSs) and Tension Leg Platforms (TLPs), incorporated by reference as specified in 30 CFR 250.198. (c) The maximum allowable operating pressure (MAOP) shall not exceed the least of the following: (1) Internal design pressure of the pipeline, valves, flanges, and fittings; (2) Eighty percent of the hydrostatic pressure test (HPT) of the pipeline; or (3) If applicable, the MAOP of the receiving pipeline when the proposed pipeline and the receiving pipeline are connected at a subsea tie-in. (d) If the maximum source pressure (MSP) exceeds the pipeline's MAOP, you must install and maintain redundant safety devices meeting the requirements of section A9 of API RP 14C (incorporated by reference as specified in §250.198). Pressure safety valves (PSV) may be used only after a determination by the Regional Supervisor that the pressure will be relieved in a safe and pollution-free manner. The setting level at which the primary and redundant safety equipment actuates shall not exceed the pipeline's MAOP. (e) Pipelines shall be provided with an external protective coating capable of minimizing underfilm corrosion and a cathodic protection system designed to mitigate corrosion for at least 20 years. (f) Pipelines shall be designed and maintained to mitigate any reasonably anticipated detrimental effects of water currents, storm or ice scouring, soft bottoms, mud slides, earthquakes, subfreezing temperatures, and other environmental factors. [53 FR 10690, Apr. 1, 1988. Redesignated at 63 FR 29479, May 29, 1998, as amended at 67 FR 51760, Aug. 9, 2002; 70 FR 41583, July 19, 2005]
Title 30: Mineral Resources
PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF
Subpart J—Pipelines and Pipeline Rights-of-Way
§ 250.1002 Design requirements for DOI pipelines.
