An area outside of a restricted area, access to which can be limited by the licensee for any reason is defined as?

• A. limited area
• B. uncontrolled area
• C. controlled area
• D. declared area

Answer: (C)

In radiation safety, areas are classified to control exposure: restricted area, controlled area, and unrestricted (uncontrolled) area. An area outside a restricted area where access can still be limited by the licensee for any reason is a controlled area. The licensee uses entry controls in a controlled area to manage occupational exposure, even though the area isn’t as hazardous as a restricted zone. The other terms aren’t official classifications for this purpose: a “limited area” isn’t a standard category; an “uncontrolled area” is one where access isn’t restricted; and a “declared area” isn’t used here to describe this level of access control.