Title:
SYSTEM AND METHOD FOR PASSIVE ASSAY OF HOLDUP DEPOSITS IN NUCLEAR PIPING
Document Type and Number:
WIPO Patent Application WO/2019/060745
Kind Code:
A3
Abstract:
Disclosed herein are a method, apparatus, and software for passive, non-destructive assay of holdup deposits in nuclear piping by in-pipe apparatus. A detector deployed within a pipe is collimated to observe radiation impinging radially inward from decay of deposits that lie on the pipe wall. A radiation detector is centered in the pipe and collimated by a pair of coaxial shielding discs disposed equidistant from the detector. This arrangement causes radiation from a truncated cylinder of pipe deposit within a field of regard to impinge on the detector, while precluding radiation emanating from pipe walls beyond the field of regard from reaching the detector. Hence, observations are unique to a known cylindrical length of pipe. The detector assembly is translated through pipes by an autonomous mobile robotic apparatus. Computer software controls the robotic apparatus, logs data, and post-processes to assay deposits.
Inventors:
WHITTAKER WILLIAM LAWRENCE (US)
MALEY SIRI KATRINA (US)
JONES HEATHER LOUISE (US)
SAPUNKOV OLEG BORISOVICH (US)
MALEY SIRI KATRINA (US)
JONES HEATHER LOUISE (US)
SAPUNKOV OLEG BORISOVICH (US)
Application Number:
PCT/US2018/052245
Publication Date:
July 11, 2019
Filing Date:
September 21, 2018
Export Citation:
Assignee:
UNIV CARNEGIE MELLON (US)
International Classes:
G01T3/08; G01T7/00; G01V5/12
Foreign References:
| US5686674A | 1997-11-11 | |||
| US20160018532A1 | 2016-01-21 | |||
| EP1548464A1 | 2005-06-29 | |||
| US20060284094A1 | 2006-12-21 | |||
| US6806475B1 | 2004-10-19 | |||
| US20060290779A1 | 2006-12-28 |
Attorney, Agent or Firm:
CARLETON, Dennis M. (US)
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