Pipeline and Hazardous Materials Safety Admin.
Short name: PHMSA
Pipeline safety, hazardous materials transportation, gas leak detection requirements.
Latest items
Open in Browser →Pipeline Safety: Joint Meeting of the Gas and Liquid Pipeline Advisory Committees
This notice announces a joint public meeting of the Technical Pipeline Safety Standards Committee, also known as the Gas Pipeline Advisory Committee (GPAC), and the Technical Hazardous Liquid Pipeline Safety Standards Committee, also known as the Liquid Pipeline Advisory Committee (LPAC). The meeting will be held virtually to discuss 13 notices of proposed rulemaking (NPRMs) covering topics such as special permit conditions, in-plant piping, incidental gathering lines, coating damage assessments, atmospheric corrosion, class change pressure tests, maximum allowable operating pressure (MAOP) reconfirmation, operator identification notifications, limitations on welding operators, remote monitoring valves, property damage definition, right-of-way patrols, and reporting deadlines.
Pipeline Safety: Crimson Pipeline LP's Petition for Declaratory Order Regarding the Requirements for Baseline Integrity Assessments
The Pipeline and Hazardous Materials Safety Administration is seeking comment on a Petition for Declaratory Order (Petition) requesting PHMSA issue an order regarding requirements for baseline integrity assessments.
Hazardous Materials: Notice of Applications for Modification to Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations, notice is hereby given that the Office of Hazardous Materials Safety has received the application described herein.
Hazardous Materials: Notice of Applications for New Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations, notice is hereby given that the Office of Hazardous Materials Safety has received the application described herein.
Hazardous Materials: Notice of Actions on Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations, notice is hereby given that the Office of Hazardous Materials Safety has granted or denied the application described herein.
Pipeline Safety: Guidance for Enhancing the Effectiveness of Distribution Integrity Management Programs
PHMSA issues this advisory bulletin to remind owners and operators of gas distribution systems of the distribution integrity management program (DIMP) requirements under 49 CFR part 192, subpart P. The guidance is intended to improve implementation of DIMP risk evaluations by addressing factors such as high-risk infrastructure, interactive threats, and leak management effectiveness. In addition, the guidance urges pipeline operators to adopt the most appropriate risk models for use within their integrity management programs, with full consideration of probabilistic risk models.
Pipeline Safety: Information Collection Activities
In compliance with the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.), this notice announces that the information collection request abstracted below is being forwarded to the Office of Management and Budget (OMB) for review and comment. A Federal Register notice with a 60-day comment period soliciting comments on this information collection was published on January 14, 2026.
Pipeline Safety: Repair Criteria for Hazardous Liquid and Gas Transmission Pipelines
PHMSA proposes to modernize and to clarify the anomaly response criteria in the Federal pipeline safety regulations for gas transmission and hazardous liquid pipelines. Driven by twenty years of technological development, modern engineering concepts allow operators to identify, schedule, and remediate pipeline anomalies more effectively and in a less costly manner. PHMSA proposes incorporating these improved safety practices into its regulations by finalizing certain safety improvements advanced in recent rulemakings for gas transmission pipelines and extending those changes to hazardous liquid pipelines. In addition, PHMSA proposes certain non-substantive revisions to its gas and hazardous liquid repair regulations to improve compliance.
Hazardous Materials: Information Collection Activities
In accordance with the Paperwork Reduction Act of 1995, this notice announces that the Information Collection Requests (ICRs) discussed below will be forwarded to the Office of Management and Budget (OMB) for renewal and extension. These ICRs describe the nature of the information collections and their expected burdens. A Federal Register notice and request for comments with a 60-day comment period on these ICRs was published in the Federal Register on January 30, 2026 (91 FR 4172) under Docket No. PHMSA-2026-0199 (Notice No. 2026-04). PHMSA received one comment in response to the 60-day notice from the Railway Safety Institute (RSI) regarding OMB Control Number 2137-0559, "Rail Carrier and Tank Car Tanks Requirements, Rail Tank Car Tanks-- Transportation of Hazardous Materials by Rail" (expiring September 30, 2027). However, PHMSA is not addressing the renewal of this OMB Control Number in today's notice. Instead, RSI's comments will be addressed either through a separate 30-day notice or in conjunction with responding to the proposals in the HM-265 Notice of Proposed Rulemaking (NPRM).\1\ ---------------------------------------------------------------------------
Pipeline Safety: Advisory Bulletin on Preventing Excavation Damage During National Safe Digging Month and Beyond; Correction
PHMSA published a document in the Federal Register on April 21, 2026, issuing an advisory bulletin on preventing excavation damage. This notice corrects references to the Common Ground Alliance (CGA) Best Practices.
Pipeline Safety: Declaratory Order Procedures; Response To Petition for Reconsideration
PHMSA alerts the public to a petition for reconsideration and PHMSA's response.
Hazardous Materials: Notice of Applications for New Special Permits
The Department of Transportation's Office of Hazardous Materials Safety has received applications for special permits under the Hazardous Material Regulations. This notice announces the receipt of such applications and indicates the processing procedures that will be followed.
Hazardous Materials: Notice of Actions on Special Permits
The Department of Transportation's Office of Hazardous Materials Safety announces decisions on special permit applications for the transport of hazardous materials under DOT regulations. This notice documents grants or denials of permits requested by entities seeking exceptions or modifications to standard hazardous material shipping requirements.
Hazardous Materials: Notice of Applications for Modification to Special Permits
The Department of Transportation's Office of Hazardous Materials Safety has received applications for modification to special permits under hazardous materials regulations. This notice announces the initiation of review procedures for permit modifications.
Pipeline Safety: Breakout Tank Inspection Rule
PHMSA proposes updating regulations for breakout tanks in hazardous liquid pipeline systems by incorporating the 5th edition of API Standard 653 (2014) by reference, replacing the 3rd edition (2001). The rule authorizes risk-based inspection procedures for determining inspection intervals of in-service breakout tanks.
Hazardous Materials: Streamlining Requirements for the Approval of Certain Energetic Materials
PHMSA amends Hazardous Materials Regulations to streamline approval processes for transporting low-hazard fireworks and small arms cartridges (including tracer ammunition) through simplified classification and self-classification options. The rule designates the PHMSA portal as the exclusive submission method for explosives approvals and permits approval holders to voluntarily terminate explosive approvals.
Pipeline Safety: Class Location Change Requirements; Correction
PHMSA issues a technical correction to clarify the 24-month deadline for implementing integrity management alternatives when gas transmission pipeline operators restore maximum allowable operating pressure following class location changes. The deadline runs from the later of the final rule's effective date or when the operator decides to initiate restoration, aligning with MAOP confirmation timelines.