Fencing intruders out
Chain link fences are a component of almost every perimeter security system, and their use ranges from simply delineating a boundary to supporting sophisticated intrusion detectors. Standard chain link fences provide little delay, and often, fence-mounted sensors can be circumvented by using a lightweight ladder to jump over the fence with minimum fence disturbance. This investigation summarizes the results of approximately four hundred intrusions against several sensor combinations and fences from seven to twelve feet high. Fence climbing delays range from three to twenty seconds, depending on the fence and sensor combination used, and detection probabilities vary from low, in some cases, to very high for one configuration which has never been crossed without an alarm. A perimeter fence/barrier/sensor combination designed to delay and discourage intruders and provide for a high probability of detection is discussed as an end result of the investigation. 5 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7103496
- Report Number(s):
- SAND-88-1439C; CONF-880631-7; ON: DE88011185
- Resource Relation:
- Conference: 29. annual meeting of the Institute of Nuclear Materials Management, Las Vegas, NV, USA, 26 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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