HD 1.3 and HD 1.4 refer to what classification?

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Multiple Choice

HD 1.3 and HD 1.4 refer to what classification?

Explanation:
Hazard divisions are used in explosives safety to categorize how a material could behave in an accident. The numbers show the specific risk level within that category. HD 1.3 signals a fire hazard with potential for a limited or non-mass explosion, while HD 1.4 indicates a minor explosion hazard with limited energy and no significant blast or projection under normal conditions. This classification guides how the material is handled, stored, and shipped. They’re about the hazard behavior, not environmental temperatures, initiation thresholds, or safety procedures.

Hazard divisions are used in explosives safety to categorize how a material could behave in an accident. The numbers show the specific risk level within that category. HD 1.3 signals a fire hazard with potential for a limited or non-mass explosion, while HD 1.4 indicates a minor explosion hazard with limited energy and no significant blast or projection under normal conditions. This classification guides how the material is handled, stored, and shipped. They’re about the hazard behavior, not environmental temperatures, initiation thresholds, or safety procedures.

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