[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis

An approval document can only be issued if there is a specific approval citation in the Hazardous Materials Regulations (49 CFR). If there is no specific approval citation, the relief sought from the HMR must be in the form of a special permit.

Approvals Search Tools

The approvals search tool is a powerful and effective method to determine the current status of a submission, existing approval, pending approval, terminated approval or expired approval.

If you need information concerning application status that is not available in this search, please contact: approvals@dot.gov or call 202/366-3987.

More Information
The following are links to additional information about Approvals, Terminations, and associated documents.
Guidance and Criteria:
Competent Authority Numbering System
At the beginning of 2000, it became necessary to update the Competent Authority (CA) numbering system from the seven-digit sequence to the current 10-digit sequence. The old seven-digit number (and in a few cases, nine-digit number) and the new 10-digit number are interchangeable. It is not necessary to apply for a new number and the old number is still valid. All CA's issued by the Approvals Office will contain the new 10-digit number. If your company is using packagings, labels, and/or stamps with the old number, you may continue to use them when practicable.
How Do I Get an Approval?
Look Up
Locate official documents and records.
NTSB Recommendations: Hazmat
PHMSA is required by law to respond to recommendations issued by the National Transportation Safety Board (NTSB).
NTSB Recommendations: Pipeline
PHMSA is required by law to respond to recommendations issued by the National Transportation Safety Board (NTSB).
One-stop site to find, view, and comment on Federal regulations and other Federal actions.
eCFR - Code of Federal Regulations
The Electronic Code of Federal Regulations (e-CFR) provides daly updates to the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government, including PHMSA.
CFR Retrieve by Citation
Title, Part, and either a Section Number or a Subpart letter are required.
Federal Register
The official daily publication for rules, proposed rules, and notices of Federal agencies and organizations, as well as Executive Orders and other presidential documents.
Grant programs offered by all Federal grant making agencies.
Provides citizens access to federal agency forms.
Government information by topic.
The United States Code
Provides codification by subject matter of the general and permanent laws of the United States.
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