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Technical Bulletins

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Hazardous Materials Enforcement

Several field personnel have inquired about the calculations used to determine if a material meets the poison-by-inhalation requirements of 49 CFR Section 173.3a. As an illustration of these calculations, two material safety data sheets (MSDS) are analyzed.

Hazardous Materials Enforcement

Please find attached an interpretation of the legal enforceability of 49 CFR Appendix B to Subpart B of Part 107 prepared by the Senior Attorney, Research and Special Programs Administration.

Hazardous Materials Enforcement

This notice amends the 1983 Edition of the Hazardous Materials Enforcement Manual to: (1) define explicitly the statutory base for regulation; (2) to require inspection of in process tank car manufacturing and repair facilities; (3) to amend the allocation of inspection resources; and (4) to...

Special Approvals

Similar in many aspects to a Department of Transportation Exemption (DOT-E), Special Approvals (SA) are granted or denied to parties seeking approval over a packaging or specific operational constraint. The fundamental difference lies in the manner of which the application is processed. For...