The letter B in hazardous materials regulations pertains specifically to which requirement?

The letter B in hazardous materials regulations specifically refers to non-bulk packaging requirements. Non-bulk packaging is defined as packaging that has a maximum capacity of 450 liters (119 gallons) for liquids or a maximum net mass of 400 kilograms (882 pounds) for solids. These specifications are vital for ensuring safety during transportation, handling, and storage of hazardous materials.

Understanding non-bulk packaging requirements helps ensure that hazardous materials are transported in a way that minimizes risk, as these smaller packages are often used for consumer products or smaller quantities of hazardous substances. Various regulations govern the labeling, marking, and safe handling of these packages to prevent accidents and ensure compliance with safety standards.

In contrast, packaging requirements for bulk materials, explosive articles, and transportation by rail involve different criteria and specifications that pertain to specific types or quantities of materials, highlighting why non-bulk packaging is denoted with the letter B.