Vents, ducts, and similar openings with a cross-sectional measurement greater than 96 inches shall be protected by a fixed barrier or security grill. (This requirement is not applicable to through-ducts that do not open into the SCIF.) Grills shall be fabricated of steel or aluminum grating or bars with a thickness equal to the perimeter barrier. If a grating is used, bridge center-to-center measurements will not exceed 1.5 inches by 4 inches. Bars be mounted in a grid pattern, six-inches on center. The grating or bars shall be welded into place. Construction of the SCIF perimeter shall afford adequate sound attenuation. Air handling units and ducts may require baffles if SCIF discussions can be overhead in adjacent areas. The SCIF shall be equipped with an AO-approved intrusion detection system (IDS) or other countermeasures if SCI-indoctrinated personnel cannot continuously occupy the area. Passing scuttles and windows should not be installed between the SCIF and any other space on the ship. If installed, they shall be secured on the inside of the SCIF. All SCI cryptographic and processing equipment shall be located within the SCIF. Unclassified telecommunications meet the requirements outlined in Chapter 11, to the greatest extent practical. telephones will not be permitted in the SCIF without additional mitigations determined by the AO. If a deviation is granted, sound-powered telephones located within the SCIF and connecting to locations outside the SCIF shall comply with the following: Telephone cables shall not break out to jack-boxes, switchboards, or telephone sets other than at designated stations. Cables shall not be shared with any circuit other than call or signal systems associated with the SCIF circuit. Telephone cables shall be equipped with a selector switch located at the controlling station and shall be capable of disconnecting all stations, selecting any one station, and disconnecting the remaining stations. telephones not equipped with a selector switch shall have a positive disconnect device attached to the telephone circuit. Within any SCIF, sound-powered telephones not used for passing SCI information shall have a warning sign prominently affixed indicating the restriction.
Vents, ducts, and similar openings with a cross-sectional measurement greater than 96 inches shall be protected by a fixed barrier or security grill. (This requirement is not applicable to through-ducts that do not open into the SCIF.) Grills shall be fabricated of steel or aluminum grating or bars with a thickness equal to the perimeter barrier. If a grating is used, bridge center-to-center measurements will not exceed 1.5 inches by 4 inches. Bars be mounted in a grid pattern, six-inches on center. The grating or bars shall be welded into place. Construction of the SCIF perimeter shall afford adequate sound attenuation. Air handling units and ducts may require baffles if SCIF discussions can be overhead in adjacent areas. The SCIF shall be equipped with an AO-approved intrusion detection system (IDS) or other countermeasures if SCI-indoctrinated personnel cannot continuously occupy the area. Passing scuttles and windows should not be installed between the SCIF and any other space on the ship. If installed, they shall be secured on the inside of the SCIF. All SCI cryptographic and processing equipment shall be located within the SCIF. Unclassified telecommunications meet the requirements outlined in Chapter 11, to the greatest extent practical. telephones will not be permitted in the SCIF without additional mitigations determined by the AO. If a deviation is granted, sound-powered telephones located within the SCIF and connecting to locations outside the SCIF shall comply with the following: Telephone cables shall not break out to jack-boxes, switchboards, or telephone sets other than at designated stations. Cables shall not be shared with any circuit other than call or signal systems associated with the SCIF circuit. Telephone cables shall be equipped with a selector switch located at the controlling station and shall be capable of disconnecting all stations, selecting any one station, and disconnecting the remaining stations. telephones not equipped with a selector switch shall have a positive disconnect device attached to the telephone circuit. Within any SCIF, sound-powered telephones not used for passing SCI information shall have a warning sign prominently affixed indicating the restriction.
Technical-Specifications-for-SCIF-Construction-V1.2.docx