On June 18, 2018 (82 FR 28162), the Pipeline and Hazardous Materials Safety Administration (PHMSA) published a final rule correction in the federal register responing to appeals submitted to a previous final rule -published on June 2, 2016 (HM-218H; 81 FR 35483) that made miscellaneous amendments to the Hazardous Materials Regulations in 49 CFR Parts 172 - 180. This final rule specifically responds to appeals to extend the effective date of certain nitric acid packaging and emergency response telephone number amendments as previously adopted. This final rule also clarifies amendments associated with the trigger date of the 10-year test period for certain MC 331 cargo tanks in dedicated propane service and corrects editorial errors. This final rule is effective July 18, 2018 with a voluntary compliance date starting on its publish date of June 18, 2018. Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning September 17, 2018.

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PHMSA 06-18-2018 Misc correcting amendments