PHMSA Guidance
951
Safety Advisory Notice: Encouraging the Use of Real-Time Train Consist Info in 911 Call Centers
PHMSA encourages 9-1-1 call centers—including both emergency communications centers and public safety answering points—to download, register, train on, and use available technologies, such as the AskRail® application (AskRail app or application), that are designed to provide critical information...
Safety Advisory Notice: Cylinders Requalified by BJ MedQuip Repair Service, Inc.
PHMSA is issuing this safety advisory to notify the public that BJ MedQuip Repair Services, Inc., located at 6495 S. Highway 48, Mannford, OK 74044, marked specification cylinders as authorized for hazardous materials transportation without properly requalifying the cylinders. More than 10,000...
Notice of Enforcement Discretion for the Transportation of Over-Pressurized Cylinders
The U.S. Department of Transportation’s (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) is providing notice that it will not take enforcement action against trained collecting personnel who transport the below-specified over-pressurized cylinders for the purpose of venting...
Approval of Phast v8.4 as an Alternate Model for Liquefied Natural Gas (LNG) Flammable Vapor-Gas Dispersion Exclusion Zones
On April 13, 2023, PHMSA approves DNV’s petition for Phast version 8.4 as an alternative model for calculating the flammable vapor dispersion exclusion zones under 49 C.F.R. § 193.2059(a). The Final Environmental Assessment discusses the analysis of the validation results. Other documentations...
Onshore Gas Gathering FAQs for Type C and R Pipelines
The Onshore Gas Gathering FAQs for Type C and Type R Pipelines include general guidance on gas gathering and specific guidance on requirements applicable to Type C and Type R gathering lines.
PHMSA Safety Advisory Notice: Transportation of Electric Vehicles Containing Lithium Batteries Damaged by Extreme Weather Events
PHMSA published a Safety Advisory Notice on the "Transportation of Electric Vehicles Containing Lithium Batteries Damaged by Extreme Weather Events" to serve as a reminder of PHMSA's current requirements under the Hazardous Materials Regulations for transport and shipment of electric vehicles...
DOT-111 Ethanol Phase-Out Frequently Asked Questions (FAQs)
PHMSA issues responses to FAQs addressing questions about the upcoming phaseouts for transporting ethanol in DOT-111 tank cars. These FAQs will respond to questions and requests for guidance from railroads and tank car shippers on the upcoming May 1 and July 1 ethanol phaseout deadlines.