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

The items below are the currently open NTSB recommendations regarding rail and the OHMS responses. For copies of the specific letters containing the NTSB/OHMS dialog, click the link for the specific item and review the list of "Related Downloads" on the right.

NTSB Classifications:

  • OAR - Open Acceptable Response
  • OAA - Open Acceptable Action
  • OAAR - Open Acceptable Alternative Action
  • OUA - Open Unacceptable Action
  • OUR - Open Unacceptable Response
  • UCL - Unclassified (until NTSB Classifies)
Currently Open Recommendations
 
R-07-4 Immediate Notification to Emergency Responders; OAR Apr 24, 2007
 
R-08-13 Optimum Separation Requirements; OAR May 22, 2008
 
R-12-5 Enhanced protection of DOT-111 Tank Cars used in ethanol and crude oil service; OAR Mar 2, 2012
 
R-12-6 Bottom Outlet Valve Closure; OAR Mar 2, 2012
 
R-12-7 Adoption of American Association of Railroads (AAR) center sill or draft sill attachment designs; OAR Mar 2, 2012
 
R-14-4 Rail Routing of Trains Carrying Flammable Liquids; UCL Jan 23, 2014
 
R-14-5 Comprehensive Response Plan Threshold; UCL Jan 23, 2014
 
R-14-6 Shipper Testing and Documentation for Hazmat Classification; UCL Jan 23, 2014
Careers  |  Contact Us  |  No Fear  |  Privacy Policy  |  FOIA  |  Accessibility  |  FAQs  |  Web Policies  |  Site Map  |  Download Acrobat