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By Romine Deming

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Read or Download Advances in Security Technology. Selected Papers of the Carnahan Conferences on Security Technology 1983–1985 PDF

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Extra info for Advances in Security Technology. Selected Papers of the Carnahan Conferences on Security Technology 1983–1985

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Secure/Inop. Access 30 31 32 Arm Arm Arm 1 Alarm/Neg. 2 Alarms/Neg. 1 Alarm/Inop. 2 Alarms/Inop. Alarm/Pos. 33 34 35 36 37 Arm Fire Arm Fire Fire 2 Alarms/Inop. 38 Fire Alarm/Pos. 39 Fire Access * * Proc. Proc. 50 Security Barrier Table 2 Technology Activated-barrier Decision Tree (Target Area in Access) Red Zone Leg Number Access Leg Secure/Neg. Secure/Inop. Access 40 41 42 * Alarm/Neg. Alarm/Inop. Alarm/Pos. 43 44 45 Arm Arm Fire Secure/Neg. Secure/Inop. Access 46 47 48 Proc. Proc. Proc. Alarm/Neg.

Figure 1 shows a typical layered security system that provides protection in depth for a vital area. The " y e l l o w " zone is typically the perimeter of a Protected Area (PA); the orange zone is an intermediate zone, usually within a building; the red zone is directly outside a vital area and may include the Materials Access Area (MAA). Each zone has layered sensors of perimeter and volumetric alarms, with closed circuit television (CCTV) for assessment. As can be seen in Figure 1, the yellow zone provides the initial detection for ground penetration, and the orange zone provides the first level of detection for airborne penetration.

Since the mid-70s, research has been under way to provide a new type of barrier—an active 1 barrier. An active barrier is a component that is installed in a passive mode and is activated by a security inspector after the positive assessment of an adversary. When the activated barrier is deployed, a delay of 30 minutes or more is provided. PHYSICAL PROTECTION Physical protection systems are often designed using a layered technique. Figure 1 shows a typical layered security system that provides protection in depth for a vital area.

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