Overhoff Technology Corporation New Developments in Tritium Monitors September 2012 HPIC

Overhoff Technolgy Our core business: Design and manufacturing of Tritium in Air monitors with ionization chamber detectors Portable Fixed September 2012 HPIC

Low Level Tritium in Air Gas Proportional Detectors Overhoff Technolgy Also: Low Level Tritium in Air Gas Proportional Detectors Passive Samplers (Bubblers) September 2012 HPIC

Additional Areas of Interest: Overhoff Technolgy Additional Areas of Interest: Tritium in Water Radon Environmental Gamma Data Acquisition September 2012 HPIC

Overhoff Tritium monitors Focus of Discussion New Developments in Overhoff Tritium monitors Portable 400AC, 200SS, 2x200-LD, TriCair Fixed 421-HTO; 321BWC, 593, Triathalon September 2012 HPIC

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 Calibration Diagnostics; battery life, power supplies Rechargeable NiMH Batteries Constant flow; 2 LPM (5 volume changes/min) September 2012 HPIC

Portable Model 200SS Based on the Model 200SB Non-Gamma compensated, uses both chambers for tritium measurement Successor 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 September 2012 HPIC

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. September 2012 HPIC

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. September 2012 HPIC

Portable Model 2x200-LD September 2012 HPIC

Portable TriCair Convertible hose connections and traps to measure Tritium or C14 Dual channel electrometer T2 and C14 are selected with a front panel toggle switch Measurement appears on one display. September 2012 HPIC

Fixed Monitor Model 421-HTO Nuclear Power Plant Monitor (Heavy Water) High Sensitivity Monitor in the presence of high concentrations of Noble Gases Uses Nafion Dryer, only HTO passes through September 2012 HPIC

Fixed Monitor Model 321BWC Cart mounted system Is semi-portable Dual chamber gamma compensated 1” thick lead shielding for additional gamma compensation September 2012 HPIC

Fixed Monitor Model 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 screen September 2012 HPIC

Tritium, C14, and Noble Gases Fixed Monitor Triathalon Family of monitors with multiple configurations for measurement of: Tritium, C14, and Noble Gases September 2012 HPIC

Thank You! Q and A September 2012 HPIC

Overhoff Technology Corporation 1160 U.S. Route 50 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 dwilliamson@overhoff.com September 2012 HPIC