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Applications Of Solid State Track Recorder Neutron Dosimetry For Fuel Debris Location In The Three Mile Island Unit 2 Reactor Coolant System
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Book Synopsis Applications of Solid State Track Recorder Neutron Dosimetry for Fuel Debris Location in the Three Mile Island Unit 2 Reactor Coolant System by :
Download or read book Applications of Solid State Track Recorder Neutron Dosimetry for Fuel Debris Location in the Three Mile Island Unit 2 Reactor Coolant System written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of the Three Mile Island Unit (TMI-2) accident on March 28, 1979, fuel debris was dispersed into the primary coolant and auxilliary systems of the reactor. The presence of fuel may be traced by using the neutron activity which is associated with the burn-in of higher actinides (about 300 neutrons/sec/kgU). Solid state track recorder (SSTR) neutron dosimetry is the most sensitive technique for measuring low neutron fluxes. Hence, neutron dosimetry is being performed at TMI-2 to locate fuel debris and subsequently aid the reactor recovery effort. Herein, the results of a scoping measurement on the fuel content of TMI-2 Makeup Demineralizer A are reported along with relevant calibration measurements. The total amount of fuel estimated in Demineralizer A, 1.7 kg, corresponds to a total neutron source of about 400 neutrons/sec. At the detector positions, data were obtained with neutron fluxes as low as 10−3 n/sec/cm2, demonstrating the extreme sensitivity of the SSTR method.
Book Synopsis Neutron Dosimetry in the Three-Mile Island Unit 2 Reactor Cavity with Solid-state Track Recorders by :
Download or read book Neutron Dosimetry in the Three-Mile Island Unit 2 Reactor Cavity with Solid-state Track Recorders written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid-state track recorder (SSTR) neutron dosimetry has been conducted in the Three-Mile Island Unit 2 (TMI-2) reactor cavity (i.e., the annular gap between the pressure vessel and the biological shield) for nondestructive assessment of the fuel distribution. Two axial stringers were deployed in the annular gap with 17 SSTR dosimeters located on each stringer. SSTR experimental results reveal that neutron streaming, upward from the bottom of the reactor cavity region, dominates the observed neutron intensity. These absolute thermal neutron flux observations are consistent with the presence of a significant amount of fuel debris lying at the bottom of the reactor vessel. A conservative lower bound estimated from these SSTR data implies that at least 2 tonnes of fuel, which is roughly 4 fuel assemblies, is lying at the bottom of the vessel. The existence of significant neutron streaming also explains the high count rate observed with the source range monitors (SRMs) that are located in the TMI-2 reactor cavity.
Book Synopsis Solid-state Track Recorder Neutron Dosimetry in the Three-Mile Island Unit-2 Reactor Cavity by :
Download or read book Solid-state Track Recorder Neutron Dosimetry in the Three-Mile Island Unit-2 Reactor Cavity written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid-state track recorder (SSTR) neutron dosimetry has been conducted in the Three-Mile Island Unit (TMI-2) reactor cavity (i.e., the annular gap between the pressure vessel and the biological shield) for nondestructive assessment of the fuel distribution. Two axial stringers were deployed in the annular gap with 17 SSTR dosimeters located on each stringer. SSTR experimental results reveal that neutron streaming, upward from the bottom of the reactor cavity region, dominates the observed neutron intensity. These absolute thermal neutron flux observations are consistent with the presence of a significant amount of fuel debris lying at the bottom of the reactor vessel. A conservative lower bound estimated from these SSTR data implies that there are at least 2 tonnes of fuel, which is roughly 4 fuel assemblies, at the bottom of the vessel. The existence of significant neutron streaming also explains the high count rate observed with the source range monitors (SRMs) that are located in the TMI-2 reactor cavity.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor Dosimetry written by J.P. Genthon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Fifth ASTM - Euratom Symposium on Rector Dosimetry, GKSS Research Centre, Geesthacht, F.R.G., September 24-28, 1984
Author :Jean Pierre Genthon Publisher :Springer Science & Business Media ISBN 13 :9789027720122 Total Pages :538 pages Book Rating :4.7/5 (21 download)
Book Synopsis Reactor Dosimetry by : Jean Pierre Genthon
Download or read book Reactor Dosimetry written by Jean Pierre Genthon and published by Springer Science & Business Media. This book was released on 1985 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solid State Nuclear Track Detectors by : G. Espinosa
Download or read book Solid State Nuclear Track Detectors written by G. Espinosa and published by Pergamon. This book was released on 1984 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1984 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Book Synopsis 6th International Conference on NDE in the Nuclear Industry and Equipment/services Exposition by : Haydn N. G. Wadley
Download or read book 6th International Conference on NDE in the Nuclear Industry and Equipment/services Exposition written by Haydn N. G. Wadley and published by . This book was released on 1984 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1984 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1984 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1985 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Long-term Post-accident Core Cooling of Three Mile Island Unit 2 by : U.S. Nuclear Regulatory Commission. Division of Systems Safety
Download or read book Evaluation of Long-term Post-accident Core Cooling of Three Mile Island Unit 2 written by U.S. Nuclear Regulatory Commission. Division of Systems Safety and published by . This book was released on 1979 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1984 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solid-State Track Recorder Pressure Vessel Surveillance Neutron Dosimetry at Commercial Light Water Reactors by : FH. Ruddy
Download or read book Solid-State Track Recorder Pressure Vessel Surveillance Neutron Dosimetry at Commercial Light Water Reactors written by FH. Ruddy and published by . This book was released on 1989 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid-state track recorder (SSTR) neutron dosimetry sets have been installed in the reactor cavity region of several commercial light water reactors for exposures during normal operating cycles. Analyses of SSTR sets which have been exposed for one operating cycle at four commercial light water reactors have been completed. Quality assurance procedures are in place and have been verified with neutron irradiations of representative dosimeters in NBS benchmark neutron fields.
