From Traditional Security
Part of Information Security (INFOSEC) - Vault/Secure Room Standards- Openings in Perimeter
Associated with IA controls: PESS-1
Failure to meet standards for ensuring that there is structural integrity of the physical perimeter surrounding a vault or secure room (AKA: collateral classified open storage area) IAW DoD Manual 5200.01, Volume 3, Enclosure 3 could result in the undetected loss or compromise of classified material.
For vaults, secure rooms or areas (*containing inspectable SIPRNet assets): Utility openings such as ducts and vents and any holes or passages through the secure room perimeter will be kept at less than a man-passable (96 square inches) opening. Openings larger than 96 square inches will be hardened in accordance with Military Handbook 1013/1A. TACTICAL ENVIRONMENT: This check is applicable where secure rooms are used to protect classified materials or systems. The only exception will be for urgent (short term) tactical operations or other contingency situations where fixed facilities and equipment are not yet present or incapable of being used.
For vaults, secure rooms or areas (*containing inspectable SIPRNet assets): Utility openings such as ducts and vents and any holes or passages through the secure room perimeter must be kept at less than a man-passable (96 square inches) opening. Openings larger than 96 square inches will be hardened in accordance with Military Handbook 1013/1A.
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