Radiant energy – Geological testing or irradiation
Patent
1995-06-30
1996-12-17
Hannaher, Constantine
Radiant energy
Geological testing or irradiation
G01V 500
Patent
active
055856284
ABSTRACT:
A method of surveying a surface to determine the existence of a radiation source, e.g., a radioactive source, providing a procedure for determining an optimum scan velocity for scanning past a source so as to provide the required degree of confidence to detect the presence of radiation sources while avoiding false source detection. A first scan velocity is selected based upon detector information and the nature of the survey surface, following which spreadsheet-type calculations are made based upon the expected maximum source count rate, background rate and the selected velocity. The spreadsheet calculations provide an indication of the confidence of distinguishing source activity from background radiation at the selected scan velocity. The indicated confidence is compared to the required confidence level, and when the indicated confidence is not optimally close to the required confidence, another scan velocity is selected and the spreadsheet calculations are repeated. These steps are repeated iteratively until an indicated confidence is found which is optimally close to the predetermined confidence, following which the last selected scanned velocity is used in actually carrying out the surface survey.
REFERENCES:
patent: 3735415 (1973-05-01), Craig
patent: 4155007 (1979-05-01), Beckmann
patent: 4924450 (1990-05-01), Brashear et al.
patent: 5025150 (1991-06-01), Oldham et al.
patent: 5214281 (1993-05-01), Rowe
patent: 5324948 (1994-06-01), Dudar et al.
patent: 5416321 (1995-05-01), Sebastian et al.
Andrews John P.
Policastro Gerard V.
Hannaher Constantine
Westinghouse Electric Corp.
LandOfFree
Method of surface surveying for radioactive sources does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of surface surveying for radioactive sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of surface surveying for radioactive sources will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1993262