Solid-State Track Recorder Pressure Vessel Surveillance Neutron Dosimetry at Commercial Light Water Reactors

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ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (125 download)

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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.

Reactor Dosimetry

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Publisher : ASTM International
ISBN 13 : 0803111843
Total Pages : 792 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Reactor Dosimetry by : Harry Farrar

Download or read book Reactor Dosimetry written by Harry Farrar and published by ASTM International. This book was released on 1989 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

LWR Pressure Vessel Surveillance Dosimetry Improvement Program

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ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis LWR Pressure Vessel Surveillance Dosimetry Improvement Program by : E. P. Lippincott

Download or read book LWR Pressure Vessel Surveillance Dosimetry Improvement Program written by E. P. Lippincott and published by . This book was released on 1984 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Neutron Dosimetry in the Three-Mile Island Unit 2 Reactor Cavity with Solid-state Track Recorders

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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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.

Solid-state Track Recorder Neutron Dosimetry in the Three-Mile Island Unit-2 Reactor Cavity

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ISBN 13 :
Total Pages : pages
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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.

LWR Pressure Vessel Irradiation Surveillance Dosimetry

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ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis LWR Pressure Vessel Irradiation Surveillance Dosimetry by : George Leslie Guthrie

Download or read book LWR Pressure Vessel Irradiation Surveillance Dosimetry written by George Leslie Guthrie and published by . This book was released on 1981 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

LWR Pressure Vessel Irradiation Surveillance Dosimetry

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ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis LWR Pressure Vessel Irradiation Surveillance Dosimetry by : Hanford Engineering Development Laboratory

Download or read book LWR Pressure Vessel Irradiation Surveillance Dosimetry written by Hanford Engineering Development Laboratory and published by . This book was released on 1977 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NUREG/CR.

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ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NUREG/CR. by : U.S. Nuclear Regulatory Commission

Download or read book NUREG/CR. written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1977 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Neutron Fluence Determination for Light Water Reactor Pressure Vessels

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ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Neutron Fluence Determination for Light Water Reactor Pressure Vessels by : R. Gold

Download or read book Neutron Fluence Determination for Light Water Reactor Pressure Vessels written by R. Gold and published by . This book was released on 1994 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general description of limitations that exist in pressure vessel neutron fluence determinations for commercial light water reactors is presented. Complexity factors that arise in light water reactor pressure vessel neutron fluence calculations are identified and used to analyze calculational limitations. Two broad categories of calculational limitations are introduced, namely benchmark field limitations and deep penetration limitations. Explicit examples of limitations that can arise in each of these two broad categories are presented. These limitations are used to show that the recent draft regulatory guide for the determination of pressure vessel neutron fluence, developed by the Nuclear Regulatory Commission, is based upon procedures and assumptions that are not valid. To eliminate the complexity and limitations of calculational methods, it is recommended that the determination of light water reactor pressure vessel neutron fluence be based upon experiment. Recommendations for improved methods of pressure vessel surveillance neutron dosimetry are advanced.

Reactor Dosimetry

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Publisher : Springer Science & Business Media
ISBN 13 : 940095378X
Total Pages : 995 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Reactor Dosimetry by : J.P. Genthon

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

Energy Research Abstracts

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ISBN 13 :
Total Pages : 1226 pages
Book Rating : 4.U/5 (183 download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1983 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effects of Radiation on Structural Materials

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Publisher : ASTM International
ISBN 13 : 9780803103276
Total Pages : 700 pages
Book Rating : 4.1/5 (32 download)

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Book Synopsis Effects of Radiation on Structural Materials by : James A. Sprague

Download or read book Effects of Radiation on Structural Materials written by James A. Sprague and published by ASTM International. This book was released on 1979 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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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.

Neutron Dosimetry for Reactor Pressure Vessel Applications

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ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Neutron Dosimetry for Reactor Pressure Vessel Applications by : WC. Morgan

Download or read book Neutron Dosimetry for Reactor Pressure Vessel Applications written by WC. Morgan and published by . This book was released on 1970 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron dosimetry analysis effort discussed is aimed solely at obtaining the most accurate projections of neutron fluence and future radiation embrittlement in the pressure vessel of an operating commercial power reactor. The mechanical property changes in materials for reactor pressure vessel applications are caused by neutron/atomic lattice interactions that are highly sensitive to material composition, irradiation temperature, and population and energy of the damage causing neutrons. Of these, the neutron fluence and spectra are most difficult to define accurately for a given irradiation condition since neither can be measured directly. Nevertheless, if radiation induced changes are to be understood and subsequently used as a basis for projecting changes in real reactor components, the neutron dosimetry analysis must be as precise as possible; the ultimate results of any such projections are highly dependent upon the accuracy of the neutron spectrum and neutron fluence used as input. Improvements in both of these areas, as well as in standardization of approaches, are needed for accurate projection of radiation induced changes in reactor pressure vessels. The current status of neutron dosimetry in power reactors is reviewed, and guidelines are provided for improving future dosimetry of reactor pressure vessel surveillance programs.

Annual Book of ASTM Standards

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ISBN 13 :
Total Pages : 1260 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Annual Book of ASTM Standards by : ASTM International

Download or read book Annual Book of ASTM Standards written by ASTM International and published by . This book was released on 2003 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Personnel Neutron Dosimetry Area Monitoring Using Solid-State Track Recorders

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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Personnel Neutron Dosimetry Area Monitoring Using Solid-State Track Recorders by : FH. Ruddy

Download or read book Personnel Neutron Dosimetry Area Monitoring Using Solid-State Track Recorders written by FH. Ruddy and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Personnel neutron dosimeters using a number of different techniques have been developed for routine use in neutron fields, but all of these dosimeters must be carefully corrected to account for the fact that their response is critically dependent upon the energy distribution of the neutron field. At present, personnel neutron dosimeters are typically calibrated in a standard neutron field (e.g., 252Cf or D2O-moderated 252Cf)- but may then be applied in neutron fields that vary considerably from the calibration field. Some widely used personnel dosimeters, such as TLD-albedo dosimeters, overrespond to low energy neutrons and therefore deliver high readings in fields that are more moderated than the standard field.

Transactions of the American Nuclear Society

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ISBN 13 :
Total Pages : 1282 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Transactions of the American Nuclear Society by : American Nuclear Society

Download or read book Transactions of the American Nuclear Society written by American Nuclear Society and published by . This book was released on 1958 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt: