Which item is not part of SIMPCE in IED components?

• A. Sensors
• B. Switch
• C. Container
• D. Power

Answer: (A)

The concept being tested is which components are included in the SIMPCE framework used to categorize IED parts. SIMPCE stands for Switch, Initiator, Main charge, Power, Container, and Electrical circuit. Each element represents a functional part of the device’s firing system: the switch arms or disarms the circuit, the initiator provides the initial energy to start detonation, the main charge is the explosive, the power source supplies energy to the firing circuit, the container houses all components, and the electrical circuit connects everything to carry the firing signal. Sensors are not part of this framework, so the item that does not fit is Sensors. The other listed items—switch, container, and power—are components within SIMPCE.