Every cubicle, magazine, pad, or building where explosives are stored or handled must have an explosive limit sign displaying ___.

Every cubicle, magazine, pad, or building where explosives are stored or handled must have an explosive limit sign displaying ___.

• A. HC/D limits
• B. NEW limits
• C. HC/D and NEW limits
• D. Neither HC/D limits nor NEW limits

Answer: (C)

Explosive safety signage must convey both the distance hazards and the storage quantity limits for a given space. HC/D limits indicate the Hazard Class/Distance—the required separation distances and protective actions based on the explosive’s hazard category and total quantity. NEW limits correspond to Net Explosive Weight—the maximum amount of explosive that can be stored or handled in that space. Posting a sign that includes both sets of limits gives a complete, enforceable instruction for workers: know how far to stay away and how much material is allowed in that cubicle, magazine, pad, or building. If a sign only shows one of these, you’re missing part of the safety requirement and could fail to meet regulatory standards. Therefore, both HC/D limits and NEW limits should be displayed.

Explosive safety signage must convey both the distance hazards and the storage quantity limits for a given space. HC/D limits indicate the Hazard Class/Distance—the required separation distances and protective actions based on the explosive’s hazard category and total quantity. NEW limits correspond to Net Explosive Weight—the maximum amount of explosive that can be stored or handled in that space. Posting a sign that includes both sets of limits gives a complete, enforceable instruction for workers: know how far to stay away and how much material is allowed in that cubicle, magazine, pad, or building. If a sign only shows one of these, you’re missing part of the safety requirement and could fail to meet regulatory standards. Therefore, both HC/D limits and NEW limits should be displayed.