Requesting an Approval

Must be sent to:

Associate Administrator for Hazardous Materials SafetyPHMSAU.S. Department of TransportationAttention: PHH-301200 New Jersey Avenue, SE East Building, 2nd FloorWashington, DC 20590-0001

Energetic Materials Overview

The Energetic Materials Office reviews explosives, oxygen generators, self-reactive materials, organic peroxides, and fireworks applications for the approval to perform a function that requires prior consent under subchapter C of this chapter (49 CFR parts 171 through 180).

An Approval...

Hazardous Materials Approvals and Permits Overview

PHMSA's Approvals and Permits Division is responsible for the issuance of DOT Special Permits and Approvals. A Special Permit sets forth alternative requirements, or variances, to the requirements in the HMR. Federal hazardous materials transportation law...

Approval & Permits Procedures & Policies

The materials contained in these documents consist of guidance and other information for PHMSA's Office of Hazardous Materials Safety (OHMS) and its supporting program offices. This document is issued exclusively for the internal management of PHMSA and the guidance of its officers and...

Explosive Program Reform Memo

Special Permits Program Desk Guide

Approvals Program Desk Guide

Florida Public Service Commission’s Cast Iron Update (July 2, 2012)

Federal Energy Regulatory Commission (FERC) Support Letter to USDOT (November 21, 2011)

FERC Letter to PHMSA (March 22, 2012)