Personnel who enter the hot zone, or who are within the decontamination line are documented via:

• A. Entry Logs
• B. Exit Logs
• C. Entry / Exit logs
• D. Sign-in sheets

Answer: (C)

Accounting for everyone in the hot zone and along the decontamination corridor requires tracking both who goes in and who comes out. An entry/exit log gives a single, complete record of all personnel movements, so you can instantly tell who is inside at any moment and verify that everyone who enters has also completed decon on the way out. This supports crew rotation, exposure management, and rapid response if a problem arises.

Logging only entries misses who has departed, which can leave you with uncertain or unsafe conditions. Logging only exits doesn’t tell you who actually entered in the first place. Sign-in sheets may be informal and not tied to the zone boundaries or decon steps, making them less reliable for hot-zone accountability. The combined entry and exit approach is the most robust practice for documenting personnel in these areas.