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DOT/PHMSA RIN: 2137-AF24 Publication ID: Spring 2017 
Title: Hazardous Materials: Volatility of Unrefined Petroleum Products and Class 3 Materials 
Abstract: PHMSA is considering revising the Hazardous Materials Regulations (HMR) to establish vapor pressure limits for unrefined petroleum-based products and potentially all Class 3 flammable liquid hazardous materials that would apply during the transportation of the products or materials by any mode. PHMSA is currently assessing the merits of a petition for rulemaking submitted by the Attorney General of the State of New York regarding vapor pressure standards for the transportation of crude oil. The petition requests that PHMSA implement a Reid Vapor Pressure (RVP) limit less than 9.0 pounds per square inch (psi) for crude oil transported by rail. PHMSA will use the comments in response to this ANPRM to help assess and respond to the petition and to evaluate any other potential regulatory actions related to sampling and testing of crude oil and other Class 3 hazardous materials. PHMSA will also evaluate the potential safety benefits and costs of utilizing vapor pressure thresholds within the hazardous materials classification process for unrefined petroleum-based products and Class 3 hazardous materials. 
Agency: Department of Transportation(DOT)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Undetermined  Unfunded Mandates: Undetermined 
CFR Citation: 49 CFR 171    49 CFR 172    49 CFR 177    49 CFR 173    49 CFR 174    49 CFR 178    49 CFR 179    49 CFR 180   
Legal Authority: 49 U.S.C. 5101 et seq.   
Legal Deadline:  None
Timetable:
Action Date FR Cite
ANPRM  01/18/2017  82 FR 5499   
ANPRM Comment Period End  03/20/2017 
ANPRM Comment Period Extended  03/21/2017  82 FR 14499   
ANPRM Comment Period Extended End  05/19/2017 
Additional Information: HM-251D;
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Undetermined 
Small Entities Affected: No  Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Information URL: www.regulations.gov   Public Comment URL: www.regulations.gov  
RIN Data Printed in the FR: No 
Agency Contact:
Lad Falat
Director, Engineering and Research
Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 366-4545
Email: lad.falat@dot.gov