overhoff technology corporation new developments in tritium monitors 1september 2012 hpic
TRANSCRIPT
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Overhoff Technology Overhoff Technology CorporationCorporation
New Developments New Developments inin
Tritium MonitorsTritium Monitors
1September 2012 HPIC
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Overhoff Technolgy
Our core business:
Design and manufacturing ofTritium in Air monitors
with ionization chamber detectors
• Portable• Fixed
2September 2012 HPIC
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Overhoff Technolgy
Also:
Low Level Tritium in Air
• Gas Proportional Detectors• Passive Samplers (Bubblers)
3September 2012 HPIC
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Overhoff Technolgy
Additional Areas of Interest:
• Tritium in Water• Radon
• Environmental Gamma• Data Acquisition
4September 2012 HPIC
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Focus of Discussion
New Developments inOverhoff Tritium monitors
• Portable400AC, 200SS, 2x200-LD, TriCair
• Fixed421-HTO; 321BWC, 593, Triathalon
5September 2012 HPIC
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Portable
Model 400AC
• MDA of about 2 Ci/m3 • Immune to radon• Dual channel Electrometer• Quad chamber for total Gamma
compensation• Communication to PC via RS-232;
Automatic Gamma CalibrationDiagnostics; battery life, power
supplies• Rechargeable NiMH Batteries• Constant flow; 2 LPM (5 volume
changes/min)
6September 2012 HPIC
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Portable
Model 200SS
• Based on the Model 200SBNon-Gamma compensated, usesboth chambers for tritium measurementSuccessor to the Model 394 and AN/PDR-74
• 400cc volume; MDA of 2-3 Ci/m3
• Radon suppression• Fast response, 10 seconds to 90% of final
reading• Low cost
7September 2012 HPIC
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Portable
Model 2x200-LD
can be configured as a “sniffer” to provide real-time indication of the T2
and T2O concentrations which allow
the user to quickly identify the source of leakage of tritium from
containers.8September 2012 HPIC
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Portable
Model 2x200-LD
• Dual channel electrometer
• T2 and T2O, are selected with a front panel toggle switch
• Measurement appears on a single digital display.
9September 2012 HPIC
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September 2012 HPIC 10
T2O + T2 SAMPLE IN
HEPA FILTER
T2 OUTDRIERITE
PUMP
T 2O/T 2
MODEL 2x200AS CONFIGURED ON DEMO UNIT
MAT2O/T2
Switch 2
1
+
+
-
-T2
T2O
Model 2x200-LD
Portable
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Portable
TriCair
• Convertible hose connections and traps tomeasure Tritium or C14
• Dual channel electrometer
• T2 and C14 are selected with a front panel toggle switch
• Measurement appears on one display. 11September 2012 HPIC
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Fixed MonitorModel 421-HTO
Nuclear Power Plant Monitor
(Heavy Water)
High Sensitivity Monitor in the
presence of high concentrations
of Noble Gases
Uses Nafion Dryer, only HTOpasses through
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Fixed MonitorModel 321BWC
Cart mounted systemIs semi-portable
Dual chambergamma compensated
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1” thick lead shieldingfor additional gamma compensation
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Fixed MonitorModel 593 Revamped in
2012
Gas proportional detectors, MDA is 1 kBq/m3
Measures T2 and T2O, Oxidizer included
Noble gas compensation
Updated preamplifier
Single Board Computer
LCD touch screen14September 2012 HPIC
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Fixed MonitorTriathalon
Family of monitors with multipleconfigurations for measurement of:
Tritium, C14, and Noble Gases
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September 2012 HPIC 16
Thank You!
Q and A
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September 2012 HPIC 17
Questions and comments may be directed to:
Dell Williamson
Overhoff Technology Corporation
1160 U.S. Route 50
Milford, Ohio 45150 U.S.A.
Ph 513-248-2400, Fx 513-248-2402