Which safety set corresponds to a blast grenade with striker release?

• A. he, frag, move, c/s, 1hrwt
• B. he, frag, move, c/s
• C. He, Frag, Move, c/s, 1hrwt
• D. he, frag, move, 1hrwt

Answer: (A)

Safety sets are shorthand lists that tell you the hazards you’re facing with a suspected device and the actions you must take. For a blast grenade with striker release, the set must clearly signal both the explosive and fragmentation dangers and the immediate safety actions, plus any timing precautions that reflect how this kind of device behaves.

This option includes high explosive (HE) and fragmentation (frag), which are the two core hazards of a blast grenade—blast damage from the explosive itself and risk from flying fragments. It also includes a directive to move, which is the essential immediate safety action to reduce exposure to the blast and fragmentation. The presence of a 1 hour wait time (1hrwt) signals a timing precaution tied to striker-release devices, acknowledging that there may be a delayed or potential arming risk that requires a waiting period before further handling. The “c/s” element adds a component- or condition-related caution that further guides safe management of the device.

Other sets omit one or more of these critical pieces (for example, failing to flag the HE and frag hazards, or missing the movement directive, or not including the wait time), which would misrepresent the true risks and necessary precautions of a striker-release grenade.