Investigation of molten fuel coolant interaction phenomena using real time X-ray imaging of simulated woods metal-water system

Ch.S.S.S. Avinash; Avinash Kumar Acharya; Anil Kumar Sharma; Sanjay Kumar Das; Lydia Gnanadhas; B.K. Nashine; P. Selvaraj

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자료유형: 학술저널

저자정보: Ch.S.S.S. Avinash Avinash Kumar Acharya Anil Kumar Sharma Sanjay Kumar Das Lydia Gnanadhas B.K. Nashine P. Selvaraj

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제49권 제7호

발행연도: 2017.1

수록면: 1,442 - 1,450 (9page)

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In liquid metal fast breeder reactors, postulated failures of the plant protection system may lead toserious unprotected accidental consequences. Unprotected transients are generically categorized astransient overpower accidents and transient under cooling accidents. In both cases, core meltdown mayoccur and this can lead to a molten fuel coolant interaction (MFCI). The understanding of MFCI phenomenais essential for study of debris coolability and characteristics during post-accident heat removal. Sodium is used as coolant in liquid metal fast breeder reactors. Viewing inside sodium at elevatedtemperature is impossible because of its opaqueness. In the present study, a methodology to depict MFCIphenomena using a flat panel detector based imaging system (i.e., real time radiography) is brought outusing a woods metal-water experimental facility which simulates the UO2-Na interaction. The developedimaging system can capture attributes of the MFCI process like jet breakup length, jet front velocity,fragmented particle size, and a profile of the debris bed using digital image processing methods likeimage filtering, segmentation, and edge detection. This paper describes the MFCI process and developedimaging methodology to capture MFCI attributes which are directly related to the safe aspects of a sodiumfast reactor.

#Image Processing #MFCI #Real Time X-Ray Imaging #Vapor Phase Imaging

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/ / Scilab manuals

/ / http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/MORSE/threshold.pdf / / http://physics.nist.gov/PhysRefData/XrayMassCoef/ComTab/water.html / / http://physics.nist.gov/PhysRefData/XrayMassCoef/ElemTab/z11.html A. E. Waltar / 1981 / Fast Breeder Reactors / Pergamon Press

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