Which of the following is NOT typically required in a controlled area?

• A. Random unposted entry without dosimetry
• B. Postings
• C. Access control
• D. Badge checks

Answer: (A)

Controlled areas are kept safe by making hazards obvious and tightly supervising who can enter and how exposure is tracked. Postings warn you that radiation is present and outline the rules for the area. Access control ensures only trained and authorized personnel can enter, limiting exposure opportunities. Badge checks help confirm that the people entering have the proper dosimetry and authorization, so dose monitoring can be ongoing and stay within limits. Allowing random unposted entry without dosimetry would bypass these protections, which is not a typical or acceptable practice in a controlled area.