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General

Legacy ID
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Pipeline Incident 20 Year Trends

Pipeline Incidents

PHMSA has collected pipeline incident reports since 1970. The reporting regulations and incident report formats have changed several times over the years. PHMSA merged the various report formats to create pipeline incident trend lines going back 20 years.

The...

General Approval Applications

ApprovalsM-Numbers and Visual ApplicationApproval App RegulationsThird Party Certification AgenciesList of UN Third-Party Certification AgenciesUN Criteria & Procedures for Termination of ApprovalUN Third-Party Public Meeting MinutesUN Third-Party Certification Agency Approval Letter (Not...

UN 3rd Party Public Meeting Minutes

September 19, 2013 Conference Call Meeting Minutes - Revised April 15, 2014May 9, 2013 Meeting MinutesMay 2 and 3, 2012 Meeting MinutesMay 15, 2014 Conference Call Meeting Minutes

Pipeline Incident Flagged Files

PHMSA regulations require incident and accident reports for five different pipeline system types. PHMSA incident reporting criteria have changed substantially over the years - see History of PHMSA Incident Reporting Criteria.

Accidents reported on hazardous liquid gravity lines (§195....