ERG2024 Summary of Changes

ERG 2024 Summary of Changes, page 1Official PDFUllore niti torere moluptassum quiae © SUMMARY OF CHANGES: ERG2024 Major changes from the 2020 edition of the Emergency Response Guidebook (ERG) PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION 1#

ERG 2024 Summary of Changes, page 2Disclaimer: This list is not exhaustive and should not be treated as a replacement for the ERG. In an emergency, be sure to consult the ERG2024 for accurate response guidance.#

ERG 2024 Summary of Changes, page 3We have compiled the most important changes from ERG2020 to ERG2024, organized by the color of the corresponding section in the guidebook-White, Yellow/Blue, Orange, and Green. In addition to the changes listed below, all sections have undergone minor editorial changes for accuracy and consistency. In this edition, we have added QR codes to the back cover of the hard copy version of ERG2024, offering quick access to critical incident reporting information for users on the scene of an emergency. WHITE SECTION FRONT MATERIAL MIDDLE MATERIAL • Updated the Table of Markings, Labels, and Placards • Added a table to help in deciding whether Evacuation to remove (2) obsolete designs: triangular Marine or Shelter-in-Place is the best option. Pollutant marking and yellow Division 5.2 placard • Updated the Road Trailer Identification Chart to include new descriptive text on some of the configurations/types. • Updated the Rail Car Identification Chart by adding a cryogenic railcar. END MATERIAL • Added Liquid Spill Control methods section, including guidance Expanded glossary, includes: on the types and uses of absorbent materials. • Added Considerations for Lithium Battery and Electric Vehicle • Air-reactive (EV) Fires, including identification of Damaged, Defective or • Combustible Recalled (DDR) lithium batteries. • Control temperature • Removed Chemical and Biological Warfare Agents considerations. • Criticality Safety Index (CSI) • Added a new Chemical and Biological Warfare Agents section Evacuate in the Criminal or Terrorist Use of Chemical, Biological and • Isolate Radiological Agents section. All Chemical and Biological Warfare Agents considerations that were found throughout the • Polar ERG are now collected in this new section. Chemical Warfare • Self-heating material Agents (CWA) are now listed based on their type and symptoms, not by their name. This new section includes: • Self-reactive material • Biological Warfare Agents table • Spontaneously combustible material • Chemical Warfare Agents table • Thermal runaway • Initial Isolation and Protective Action Distances for CWA. • Water insoluble • Water soluble • Clarified differentiation of Solid or Straight Stream. PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION#

ERG 2024 Summary of Changes, page 4YELLOW AND BLUE SECTIONS Added eleven (11) new UN numbers listed in the UN Model Recommendations on the Transport of Dangerous Goods (up to the 23rd revised edition) and assigned Orange guides: Re-evaluated materials to make sure that they are assigned to the appropriate Orange guide. Moved nineteen (19) materials to a different guide: ID No. Guide No. ID No. ERG2020 ERG2024 UN3550 151 UN1541 155 156 UN3551 147 UN1545 155 131 UN3552 147 UN1570 152 151 UN3553 116 UN1728 155 156 UN3554 172 UN1815 132 155 UN3555 113 UN1866 127 128 UN3556 147 UN2206 155 156 UN3557 138 UN2285 156 155 UN3558 147 UN2295 155 131 UN3559 171 UN2299 155 156 UN3560 153 UN2353 132 155 UN2395 132 155 UN2474 157 156 UN2643 155 153 UN2751 155 156 UN2947 155 127 UN3172 153 152 UN3293 152 153 UN3462 153 152 4#

ERG 2024 Summary of Changes, page 5YELLOW AND BLUE SECTIONS (cont'b) • Removed the following UN numbers that are obsolete: • UN1014 - Carbon dioxide and oxygen mixture, compressed • UN1015 - Carbon dioxide and nitrous oxide mixture • UN1366 - Diethylzinc • UN1370 - Dimethylzinc • UN2005 - Magnesium diphenyl • UN3051 - Aluminum alkyls • UN3053 - Magnesium alkyls • UN3076 - Aluminum alkyl hydrides. • Removed the Chemical Warfare Agents from the Yellow and Blue Sections (incorporated into the Criminal or Terrorist Use of Chemical, Biological and Radiological Agents section). • Added the polymerization hazard (P) to UN3302 - 2-Dimethylaminoethyl acrylate, Stabilized. ми PHMSA I PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION#

ERG 2024 Summary of Changes, page 6ORANGE SECTION • • Moved the general first aid recommendations to a new section called “General First Aid” (found before Guide 111)— kept only material-specific recommendations in Orange Guide pages. Added the following recommendations in the Guides: Guide No. CHANGE 115 Added caution statement for liquefied natural gas (LNG) released on/near water, product may vaporize explosively. 118, 136 Added reference to Table 1 for highlighted materials. 128, 130 Added alcohol-resistant foam to fire response guidance. 131 Added Potential Health Hazard: "Methyl chloroacetate (UN2295) is an eye irritant/ lachrymator (causes flow of tears)." 138, 159 Removed reference to Table 1. 140 Expanded guidance for ammonium nitrate products. 147 Revised firefighting recommendations for lithium-ion battery fires, and added guidance for electric vehicle (EV) fires. Now includes sodium-ion batteries. 151 Added response guidance for spills of solid materials. 153 Added Potential Health Hazard: “Methyl bromoacetate (UN2643) is an eye irritant/ lachrymator (causes flow of tears).” 156 Additional Response guidance: “For Acetyl bromide (UN1716), use CO2 or dry chemical only.” 166 Added Potential Health Hazard: “Toxic; may be fatal if inhaled, ingested, or absorbed through skin.” Revised Large Fire response guidance. 171 Added caution statement for delayed activation and projectile risk of Safety devices (UN3268) and Fire suppressant dispersing devices (UN3559). 6#

ERG 2024 Summary of Changes, page 7GREEN SECTION • • Table 1: | Chemical warfare agents removed, incorporated into the Criminal or Terrorist Use of Chemical, Biological and Radiological Agents section | Revised the distances | No new entries resulting from new UN numbers. Table 3: | Revised distances. ERG2024 MOBILE APPS The ERG2024 is also available as a mobile application, for both iOS and Android devices, in English, French, and Spanish! NEW TO THE ERG APP? To download the app, use the QR code (below) which corresponds to your device, or you can locate the app by name in either the App Store (iOS) or Google Play (Android). ERG FOR iOS ERG2024 FOR ANDROID ALREADY HAVE THE APP? If you have already downloaded ERG for iOS or ERG2020 for Android, published by the Pipeline and Hazardous Materials Safety Administration (PHMSA), no action needed! Your app will update automatically to ERG2024. For more ERG resources, visit PHMSA’s Emergency Response Guidebook (ERG) webpage: https://www.phmsa.dot.gov/training/hazmat/erg/emergency-response-guidebook-erg First responders, we want your feedback! Submit your name, organization, contact information, and comments to ERGComments@dot.gov PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION 7#

ERG 2024 Summary of Changes, page 8For additional information contact: The Hazardous Materials Info Center 1-800-HMR-4922 (1-800-467-4922) Email: infocntr@dot.gov Pipeline and Hazardous Materials Safety Administration Outreach, Training, and Grants Division East Building, 2nd Floor 1200 New Jersey Ave., SE Washington, DC 20590 Email: training@dot.gov 202-366-4900 202-366-7342 (Fax) PHH50-0207-0224#