General
Annual Report Mileage Summary Statistics
Hazardous Liquid
Gas Distribution
Gas Transmission & Gathering
Liquified Natural Gas (LNG) Facilities
-->Liquefied Natural Gas (LNG) Facilities and Total Storage Capacities
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Annual Report Mileage for Natural Gas Transmission & Gathering Systems
th { white-space: normal; } .table th, .table td { padding-left: 2px; May 1, 2026 Hazardous Liquid | Gas Distribution | Gas Transmission Gathering | Liquefied Natural Gas Annual Report Mileage for Natural Gas Transmission & Gathering SystemsYEARNUMBEROFRECORDSPIPETOTALON-...Independent Inspection Agencies Information
INDEPENDENT INSPECTION AGENCY (IIA)
49 CFR 107.803
Applicants seeking approval to requalify, repair, rebuild, reheat or manufacture DOT or UN ISO Cylinders in accordance with the 49 CFR must have an Independent Inspection Agency inspect their...
Independent Inspection Agencies - International
Independent Inspection Agencies - International
Domestic Independent Inspection Agencies
Domestic Independent Inspection Agencies
Pressure Vessels Overview
Authorization of cylinders manufactured in Canada to be filled, used, and requalified in the United StatesFederal Register / Vol.82, No. 60/ Thursday, March 30, 2017 / Rules and Regulations. PHMSA amended § 171.12 (a)(4) to authorize filling, maintenance, testing, and use of CTC...
Hazmat Special Permits
A special permit (previously called an exemption) is a document issued by the Associate Administrator under the authority of 49 USC 5117 permitting a person to perform a function that is not otherwise permitted under subchapter A or C of this chapter, or other regulations issued under 49 USC...