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Passive Gamma Scanner
Demonstration System

MACRO NUCLEAR FUEL ROD GAMMA SCANNERS ARE SIMPLE!
EASY TO UNDERSTAND means EASY TO MAINTAIN!

Demo System

Shown is a complete Macro passive gamma scanner system (PGS), only lacking the material handling system. Production PGS are simply longer with more detectors. We are curently building PGS with 60 and 150 detectors to meet customer requirements.

We use a 4 detector system (item[7]) each with 2 KC14 Detector modules and Photomultiplier tubes, in order to travel to fuel plants and demonstrate the simplicity of Macro gamma scanners and to collect data from customer fuel for detailed performance analysis for larger (faster) systems. It illustrates the simplicity of Macro nuclear electronics, available for all gamma scanners: active and passive, MOX or UOX, new or retrofit.














Here's a brief description of the items shown:
  1. PC (laptop, desktop or rack mount) collects and collates gamma data from the detectors [7] for use with existing customer analysis software. Optionally, analysis software (including source codes) meeting your requirements can be provided.
  2. KC14 Detector Module (not shown)
  3. Junction box combines RS-422 serial data from USB Converter [6] with DC power [4] onto the flat cable [5] that connects all KC14/KD14 modules to the computer [1].


  4. DC power source 9-36 volts for KC14/KD14 modules.
  5. Flat cable (halogen free) provides all power and computer interface to the KC14 detector modules. Both share the same cable. This is the only cable needed (no coaxial cables).
  6. USB to RS-422 converter used for up to 32 detectors.
  7. Detector assembly (for UOX fuel) with 4 BGO crystal detectors with 8 KC14 detector modules and PM tubes. It enables fully automatic temperature compensation and electronic calibration. Production passive scanners are simply longer, with more detectors on 16 mm centers. Active scanner and MOX detectors are 25% larger, on 22 mm centers.
  8. Sample fuel tube, 9mm diameter, shown for illustration purposes.
KC14/KD14 nuclear electronic modules contain all electronics required for gamma data collection and computer interface. Red and green LEDs show module status (7). They buffer a full fuel rod's worth of data to eliminate data loss. Identical in form and function for all passive and active scanners and densitometers and easily replaced, they make it easy for technicians, even of modest skill and training to understand how gamma scanning is accomplished, and to rapidly diagnose and correct problems. Easy to Understand = Easy to Maintain!





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