Radiant energy – Invisible radiant energy responsive electric signalling – Plural signalling means
Patent
1995-12-29
1997-09-09
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Plural signalling means
2502521, 250266, 250337, G01T 1169, G01T 111
Patent
active
056659725
ABSTRACT:
A method for measuring the fixed contamination level in a confined area such as small diameter pipe. The method measures the accumulated detection response over a given area and prescribed time period. To obtain the measurement a plurality of sensors are connected in tandem to form a flexible detector string and remotely positioned within the area to be monitored. The measurement is correlated to a standard obtained by using a known source in a simulated mockup environment. In one embodiment a passive monitor such as a Thermo-Luminescence Dosimeter is employed as the sensor.
REFERENCES:
patent: 4378498 (1983-03-01), Givens
patent: 4757201 (1988-07-01), Kanter
patent: 5025158 (1991-06-01), Veronesi et al.
patent: 5371363 (1994-12-01), Lilimpakis
Dickinson Jeffrey W.
Hudson Charles G.
Johnson Daniel S.
McGinley Richard
Sexton Richard J.
Hannaher Constantine
Westinghouse Electric Corporation
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