U.S. PHMSA Issues Amendments to the Hazardous Materials Regulations

Posted on: June 21, 2018

by Steve Schulte, CHMM, CPP

On June 16, 2018, the U.S Pipeline and Hazardous Materials Safety Administration (PHMSA) issued a rule in response to appeals made regarding a Final Rule that had originally been published two years before. This rulemaking amendment – formally known as HM-218H – provides corrective adjustments to HM-218, which had been previously published on June 2, 2016.

What has PHMSA amended by HM-218H?

The corrective amendments are as follows:

  • 49 CFR 172.101 – Removal of the packing group for UN0501, Propellent Solid, and UN0190, Samples Explosive.
  • 49 CFR 173.129 – Removal of the section which notes that Organic Peroxides are packing group two. Since PHMSA removed packing group two from the hazardous material table for Organic Peroxides, it was deemed that this section would create confusion, and has therefore been removed.
  • 49 CFR 180.407 – PHMSA clarified amendments regarding the trigger date for the 10 year test periods on certain MC331 cargo tanks in dedicated propane service.

When does HM-218H take effect?

The voluntary compliance date of HM-218H is June 18, 2018 with an effective date of July 18, 2018The delayed mandatory compliance date is September 17, 2018. 

Full details on HM-218H can be found in the Federal Register document.

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Useful Information

Pipeline and Hazardous Materials Safety Administration. “Hazardous Materials: Miscellaneous Amendments; Response to Appeals; Corrections.”  Federal Register 83 (18 June 2018):


PHMSA, Hazardous Materials, Cargo Tanks, Hazardous Materials Table, Transportation, DOT, Dangerous Goods, Emergency Response


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