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DOT/PHMSA RIN: 2137-AE72 Publication ID: Fall 2018 
Title: +Pipeline Safety: Safety of Gas Transmission Pipelines, MAOP Reconfirmation, Expansion of Assessment Requirements and Other Related Amendments 

This rulemaking would amend the pipeline safety regulations to address the testing and pressure reconfirmation of certain previously untested gas transmission pipelines and certain gas transmission pipelines with inadequate records, require operators incorporate seismicity into their risk analysis and data integration, require the reporting of maximum allowable operating pressure exceedances, allow a 6-month extension of integrity management reassessment intervals with notice, and expand integrity assessments outside of high consequence areas to other populated areas.

Agency: Department of Transportation(DOT)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
EO 13771 Designation: Regulatory 
CFR Citation: 49 CFR 192   
Legal Authority: 49 U.S.C. 60101 et seq.   
Legal Deadline:  None

Statement of Need:

This rulemaking is in direct response to Congressional mandates in the 2011 Pipeline reauthorization act, specifically; section 4(e) (Gas IM plus 6 months), section 5 (IM), 8 (leak detection), 23(b)(2)(exceedance of MAOP); and section 29 (seismicity). These statutory mandates and recommendations stem from a number of high profile and high consequence gas transmission and gathering pipeline incidents and changes in the industry since the establishment of existing regulatory requirements (e.g., the San Bruno, CA explosion that killed eight people).

Summary of the Legal Basis:

Congress has authorized Federal regulation of the transportation of gas by pipeline under the Commerce Clause of the U.S. Constitution. Authorization is codified in the Pipeline Safety Laws (49 U.S.C. sections 60101 et seq.), a series of statutes that are administered by the DOT, PHMSA. PHMSA has used that authority to promulgate comprehensive minimum safety standards for the transportation of gas by pipeline.


PHMSA considered alternatives to establishing a newly defined moderate consequence area and evaluated requiring assessments for all pipelines outside HCAs.

Anticipated Costs and Benefits:

Preliminary estimates of annualized costs are in the range of $40 million; annualized benefits, including cost savings, are over $200 million.


This rule addresses known risks to gas transmission and gathering including the "grandfather clause" (exemption for testing to establish maximum operating pressure for transmission lines) and new unregulated gathering lines that resemble transmission lines.

Action Date FR Cite
ANPRM  08/25/2011  76 FR 53086   
ANPRM Comment Period Extended  11/16/2011  76 FR 70953   
ANPRM Comment Period End  12/02/2011 
End of Extended Comment Period  01/20/2012 
NPRM  04/08/2016  81 FR 20721   
NPRM Comment Period End  06/08/2016  81 FR 20721   
Final Rule  03/00/2019 
Additional Information: SB- Y IC-N SLT-N;
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: Yes 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Robert Jagger
Technical Writer
Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue, SE,
Washington, DC 20590
Phone:202 366-4595