Regarding key control in SHU, which statement is correct?

Regarding key control in SHU, which statement is correct?

• A. One officer may hold keys to both doors.
• B. The outer door key is kept by main control only.
• C. Inside SHU personnel hold keys to the inside door; the outer door is controlled by main control; no one may possess keys to both doors.
• D. Keys are rotated among staff with no fixed policy.

Answer: (C)

Key control in SHU relies on separating access responsibilities to maintain layered security. The inner door keys are held by personnel inside the SHU who are responsible for internal access, while the outer door is controlled by main control to regulate the outer perimeter. This separation ensures that no single individual can bypass both security barriers, reducing the risk of inside access being gained without proper oversight. It also supports clear accountability and makes it easier to lockdown or audit who has access to each area. The principle that no one should possess keys to both doors is a safeguard against a single point of failure; it preserves the integrity of the two-tier system.

Key control in SHU relies on separating access responsibilities to maintain layered security. The inner door keys are held by personnel inside the SHU who are responsible for internal access, while the outer door is controlled by main control to regulate the outer perimeter. This separation ensures that no single individual can bypass both security barriers, reducing the risk of inside access being gained without proper oversight. It also supports clear accountability and makes it easier to lockdown or audit who has access to each area. The principle that no one should possess keys to both doors is a safeguard against a single point of failure; it preserves the integrity of the two-tier system.