Defentect™ Deployment for Increased Security
What Is Defentect™?
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Dirty Bomb Threat Detection

DEFENTECT™ DEPLOYMENT FOR INCREASED SECURITY

The capability of Defentect to protect, defend and act as an early warning system in the detection of a dirty bomb terrorist attack depends on its deployment in three strategic venues. As the deployment of Defentect becomes more pervasive, society will achieve a greater degree of security against this threat.

Deter. Deploying Defentect in locations that store radiological materials will help safeguard them by alerting authorities of illicit movement. These storage sites include hospitals, food irradiation plants, oil and energy exploration firms, university and other laboratories, as well as various government and military installations.

Detect. Locating Defentect at transportation choke points provides the opportunity to detect the illicit movement of radioactive material or dirty bombs and assist in thwarting such a terrorist attack. These transit sites include foreign and domestic border entries; airports and train stations; seaports; bridges and subways.

Defend. Targets of potential dirty bomb attacks represent the third type of location for Defentect deployment. These include commercial buildings, shopping malls, sports venues, entertainment centers, landmarks and tourist sites and critical infrastructure and economic sites.

What Is Defentect™?

Defentect™ is an unattended gamma radiation detection network that integrates data from a wide-area pervasive grid of sensors to an incident command center. Defentect™ is networked using IP and managed over the Web. When high-energy gamma rays from dirty bomb components interact with Splinternet's Gammatect™ sensors, Defentect's™ proprietary algorithms analyze the data and alert authorities to radiation that may pose a security threat. Communication features of Defentect™ provide the ability to receive and process data over a network from the radiation sensor to the command center as well to PDAs, cellphones or pagers. The addition of strategically placed Gammatect-Plus™ sensors enables Defentect™ to identify the isotope causing the radiation, providing control over false positive alarms.

Gammatect™ sensors detect gamma radiation above 20 mR/hr in less than one second. They'll detect a dirty bomb made with 60 curies of Cesium-137 at a distance of 29.5 meters, or about 100 feet. Sensors can be positioned adjacent to security cameras to provide visual identification of a threat. They can be hidden above ceilings or behind walls to prevent compromise by terrorists. Gammatect™ has been validated at two highly respected commercial radiation laboratories. Additional evaluations are scheduled at Oak Ridge National Laboratories.

Gammatect Plus™ is scintillator-based and enables real-time alerts and gamma radiation isotope identification in an unattended perimeter or portal network. If threat-level high energy gamma violations occur, a series of photographs is taken by integral digital cameras. During a high radiological count event, photos, isotope ID and date are sent to a remote command center, triggering an alarm. System administrators can designate alerts to be triggered to PDAs, cell phones, pagers or other mobile clients. Gammatect Plus™ combines passive surveillance with active alarms and can be set to ignore medical or other benign environmental isotopes. Even high radiation areas may be monitored since the system automatically subtracts predictive background radiation. Set in 'patient mode,' individuals undergoing medical treatments pass without triggering innocent alarms.

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