Title 49TransportationRelease 119-73

§60139 Maximum allowable operating pressure

Title 49 › Subtitle SUBTITLE VIII— - PIPELINES › Chapter CHAPTER 601— - SAFETY › § 60139

Last updated Apr 6, 2026|Official source

Summary

The Secretary of Transportation requires pipeline owners and operators to check their records within 6 months for all interstate and intrastate gas transmission lines in class 3 and class 4 locations and in class 1 and class 2 high-consequence areas. The check must make sure the records match the actual pipeline and confirm the pipeline’s maximum allowed operating pressure. The Secretary will say what the checks must include. Within 18 months, owners must tell the Secretary which pipeline segments lack enough records to confirm the pressure limit and give supporting documents. If a pipeline’s pressure goes above the allowed limit beyond the permitted build-up for pressure-control devices, the owner must report it to the Secretary and state authorities within 5 days. For segments with missing records, the Secretary will require a quick reconfirmation of the pressure limit and order safety measures until reconfirmed, weighing public safety, environmental risks, and system reliability. The Secretary must also issue testing rules within 18 months for previously untested pipelines in high-consequence areas operating above 30% of minimum yield strength, including pressure tests and other effective methods like inline inspections, and set timeframes with FERC and state regulators. High-consequence area — the places described in section 60109(a).

Full Legal Text

Title 49, §60139

Transportation — Source: USLM XML via OLRC

(a)(1)The Secretary of Transportation shall require each owner or operator of a pipeline facility to conduct, not later than 6 months after the date of enactment of this section, a verification of the records of the owner or operator relating to the interstate and intrastate gas transmission pipelines of the owner or operator in class 3 and class 4 locations and class 1 and class 2 high-consequence areas.
(2)The purpose of the verification shall be to ensure that the records accurately reflect the physical and operational characteristics of the pipelines described in paragraph (1) and confirm the established maximum allowable operating pressure of the pipelines.
(3)The verification process under this subsection shall include such elements as the Secretary considers appropriate.
(b)(1)Not later than 18 months after the date of enactment of this section, each owner or operator of a pipeline facility shall identify and submit to the Secretary documentation relating to each pipeline segment of the owner or operator described in subsection (a)(1) for which the records of the owner or operator are insufficient to confirm the established maximum allowable operating pressure of the segment.
(2)If there is an exceedance of the maximum allowable operating pressure with respect to a gas transmission pipeline of an owner or operator of a pipeline facility that exceeds the build-up allowed for operation of pressure-limiting or control devices, the owner or operator shall report the exceedance to the Secretary and appropriate State authorities on or before the 5th day following the date on which the exceedance occurs.
(c)(1)In the case of a transmission line of an owner or operator of a pipeline facility identified under subsection (b)(1), the Secretary shall—
(A)require the owner or operator to reconfirm a maximum allowable operating pressure as expeditiously as economically feasible; and
(B)determine what actions are appropriate for the pipeline owner or operator to take to maintain safety until a maximum allowable operating pressure is confirmed.
(2)In determining the actions for an owner or operator of a pipeline facility to take under paragraph (1)(B), the Secretary shall take into account potential consequences to public safety and the environment, potential impacts on pipeline system reliability and deliverability, and other factors, as appropriate.
(d)(1)Not later than 18 months after the date of enactment of this section, the Secretary shall issue regulations for conducting tests to confirm the material strength of previously untested natural gas transmission pipelines located in high-consequence areas and operating at a pressure greater than 30 percent of specified minimum yield strength.
(2)In developing the regulations, the Secretary shall consider safety testing methodologies, including, at a minimum—
(A)pressure testing; and
(B)other alternative methods, including in-line inspections, determined by the Secretary to be of equal or greater effectiveness.
(3)The Secretary, in consultation with the Chairman of the Federal Energy Regulatory Commission and State regulators, as appropriate, shall establish timeframes for the completion of such testing that take into account potential consequences to public safety and the environment and that minimize costs and service disruptions.
(e)In this section, the term “high-consequence area” means an area described in section 60109(a).

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

The date of enactment of this section, referred to in subsecs. (a)(1), (b)(1), and (d)(1), is the date of enactment of Pub. L. 112–90, which was approved Jan. 3, 2012.

Reference

Citations & Metadata

Citation

49 U.S.C. § 60139

Title 49Transportation

Last Updated

Apr 6, 2026

Release point: 119-73