4-20-2010 Presentation Files - Ensuring the Quality of Installation: Charles Rayot

Presentation Files: Distribution Construction Workshop

4-20-2010 Presentation Files - Ensuring Company and Contractor Qualifications: New Construction: Michael Gruenberg

Presentation Files: Distribution Construction Workshop

4-20-2010 Presentation Files - Qualification of Personnel Performing New Construction Tasks & the Quality of Installation: Danny McGriff

Presentation Files: Distribution Construction Workshop

Stakeholder Documents - Advisory Bulletin ADB-10-03

PHMSA issued advisory bulletin ADB-10-03 to notify owners and operators of recently constructed large diameter natural gas pipeline and hazardous liquid pipeline systems of the potential for girth weld failures due to welding quality issues. Misalignment during welding of large diameter line...

American Metal Market, 4th Steel Tube and Pipe Conference 3-22-2011

Pictures of Pipeline Material and Construction Quality Issues 6-15-2012

Underground Natural Gas Storage: Key Documents

On December 19, 2016, PHMSA published in the Federal Register an Interim Final Rule (IFR) that revises the Federal pipeline safety regulations to address critical safety issues related to downhole facilities, including wells...

Risk Modeling Work Group Overview

The PHMSA Pipeline Risk Modeling Work Group was formed as a follow up to the September 2015 Pipeline Risk Modeling Methodologies Public Workshop. The purpose of the group is to provide technical, integrity management and operational input to PHMSA to aid in the development of a pipeline system...

Class Location Special Permits

Welcome. This page provides information concerning applications for special permits to operate certain gas transmission pipelines at pressures based on previous class location designation, under circumstances when class location has changed due to development or changes in population density...

Pipeline Enforcement Guidance

Enforcement Guidance documents are available to clarify PHMSA's enforcement authority by identifying and summarizing precedent, including those from interpretations, advisory bulletins, final orders, and decisions on petitions for reconsideration.  The material contained in these documents describe the practices used by PHMSA personnel in undertaking their compliance, inspection, and enforcement activities.  This guidance facilitates improved enforcement consistency and is particularly helpful when precedence exists for clarifying performance-based requirements.