The door lock control mechanism in a nuclear waste storage facility is designed for safe operation. It ensures that entry to the storeroom is only permitted when radiation shields are in place or when the radiation level in the room falls below some given value (dangerLevel). So:
i. If remotely controlled radiation shields are in place within a room, an authorized operator may open the door
ii. If the radiation level in a room is below a specified value, an authorized operator may open the door
ii. An authorized operator is identify by the input of an authorized door entry code