Table 1.

Mandated periodic spot-checks.

1. Electrical interlocks at entrance to room

2. Source exposure indicator lights on the after loader, control console, and in the facility

3. Viewing and intercom systems

4. Emergency response equipment

5. Radiation monitors to indicate source position

6. Timer accuracy

7. Clock (date and time) in unit’s computer

8. Decayed source activity in unit’s computer