What type of initiating device has a one-time use and is destroyed as a result of its activation?

What type of initiating device has a one-time use and is destroyed as a result of its activation?

• A. Restorable
• B. Rechargeable
• C. Reusable
• D. Non-restorable

Answer: (D)

Initiating devices are classified by whether they can be reset after they actuate. A device that is used only once and is destroyed when it activates fits the non-restorable category. Break-glass manual initiators are a common example: the glass is shattered and the device is permanently altered, so it cannot be reset and must be replaced to restore the system. This design ensures a definite, tamper-evident indication that actuation has occurred. Restorable devices, by contrast, can be reset and returned to service after activation, so they are not destroyed. That’s why this one-time-use, destruction-on-activation behavior points to non-restorable.

Initiating devices are classified by whether they can be reset after they actuate. A device that is used only once and is destroyed when it activates fits the non-restorable category. Break-glass manual initiators are a common example: the glass is shattered and the device is permanently altered, so it cannot be reset and must be replaced to restore the system. This design ensures a definite, tamper-evident indication that actuation has occurred. Restorable devices, by contrast, can be reset and returned to service after activation, so they are not destroyed. That’s why this one-time-use, destruction-on-activation behavior points to non-restorable.