ASNT Industrial Radiography Radiation Safety Practice Test

What is the minimum requirement for visible indicators on an X-ray system related to radiation exposure?

1. A green light and a buzzer

2. A milliammeter and a flashing light

3. A milliammeter and a red light

4. A numeric display and a sound alarm

The correct answer is: A milliammeter and a red light

The correct choice outlines the minimum requirement for visible indicators on an X-ray system concerning radiation exposure. A milliammeter provides crucial real-time feedback on the current amount of radiation being emitted during the X-ray process. The presence of a red light serves as an essential visual cue, indicating when the X-ray system is active and radiation is being produced. This is vital for ensuring safety in environments where radiation exposure could pose a risk to personnel and the surrounding area. The combination of a milliammeter and a red light effectively communicates the operational status of the X-ray system to all personnel, allowing them to take appropriate precautions when necessary. It ensures that everyone in the vicinity is aware of when the system is in use and that they should retain a safe distance to minimize their radiation exposure.