Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Delayed Hydride Cracking In Zirconium Alloys In Pressure Tube Nuclear Reactors Iaea Tecdoc Series
Download Delayed Hydride Cracking In Zirconium Alloys In Pressure Tube Nuclear Reactors Iaea Tecdoc Series full books in PDF, epub, and Kindle. Read online Delayed Hydride Cracking In Zirconium Alloys In Pressure Tube Nuclear Reactors Iaea Tecdoc Series ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors. IAEA TECDOC Series by : International Atomic Energy Agency
Download or read book Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors. IAEA TECDOC Series written by International Atomic Energy Agency and published by . This book was released on 2004 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes all of the research work undertaken as part of the IAEA coordinated research program on hydrogen and hydride induced degradation of the mechanical and physical properties of zirconium based alloys, and includes a review of the state of the art in understanding crack propagation by Delayed Hydride Cracking (DHC), and details of the experimental procedures that have produced the most consistent set of DHC rates reported in an international round-robin exercise to this date.
Book Synopsis Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors by : International Atomic Energy Agency
Download or read book Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors written by International Atomic Energy Agency and published by IAEA. This book was released on 2004 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dated October 2004. With CD-ROM containing additional information inside back cover
Book Synopsis The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components by : Manfred P. Puls
Download or read book The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components written by Manfred P. Puls and published by Springer Science & Business Media. This book was released on 2012-08-04 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: By drawing together the current theoretical and experimental understanding of the phenomena of delayed hydride cracking (DHC) in zirconium alloys, The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components: Delayed Hydride Cracking provides a detailed explanation focusing on the properties of hydrogen and hydrides in these alloys. Whilst the emphasis lies on zirconium alloys, the combination of both the empirical and mechanistic approaches creates a solid understanding that can also be applied to other hydride forming metals. This up-to-date reference focuses on documented research surrounding DHC, including current methodologies for design and assessment of the results of periodic in-service inspections of pressure tubes in nuclear reactors. Emphasis is placed on showing how our understanding of DHC is supported by progress in general understanding of such broad fields as the study of hysteresis associated with first order phase transformations, phase relationships in coherent crystalline metallic solids, the physics of point and line defects, diffusion of substitutional and interstitial atoms in crystalline solids, and continuum fracture and solid mechanics. Furthermore, an account of current methodologies is given illustrating how such understanding of hydrogen, hydrides and DHC in zirconium alloys underpins these methodologies for assessments of real life cases in the Canadian nuclear industry. The all-encompassing approach makes The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Component: Delayed Hydride Cracking an ideal reference source for students, researchers and industry professionals alike.
Book Synopsis Delayed Hydride Cracking of Zirconium Alloy Fuel Cladding by : International Atomic Energy Agency
Download or read book Delayed Hydride Cracking of Zirconium Alloy Fuel Cladding written by International Atomic Energy Agency and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication examines the phenomena of delayed hydride cracking (DHC) in Zircaloy-4 claddings and presents the results of a coordinated research project on this subject. It discusses the circumstances and the mechanisms that lead to DHC in Zircaloy-4 cladding materials and documents the knowledge gained through an inter-laboratory comparison where the physical conditions for DHC have been studied. An advanced DHC testing methodology developed in Studsvik, Sweden, and consistent experimental data of international round-robin DHC velocity measurements in CANDU/PHWR and LWR cladding Zircaloy-4 materials are also attached.
Author :A. H. Jackman Publisher :Mississauga, Ont. : Atomic Energy of Canada Limited, Power Projects ISBN 13 : Total Pages :24 pages Book Rating :4.:/5 (318 download)
Book Synopsis Delayed Hydrogen Cracking of Zirconium Alloy Pressure Tubes by : A. H. Jackman
Download or read book Delayed Hydrogen Cracking of Zirconium Alloy Pressure Tubes written by A. H. Jackman and published by Mississauga, Ont. : Atomic Energy of Canada Limited, Power Projects. This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Is Spent Nuclear Fuel Immune from Delayed Hydride Cracking During Dry Storage? An IAEA Coordinated Research Project by : Christopher E. Coleman
Download or read book Is Spent Nuclear Fuel Immune from Delayed Hydride Cracking During Dry Storage? An IAEA Coordinated Research Project written by Christopher E. Coleman and published by . This book was released on 2018 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delayed hydride cracking (DHC) has been responsible for cracking in zirconium alloy pressure tubes and fuel cladding and is a concern for spent fuel storage. For cracking to start, sufficient hydrogen must be present for hydride to form at a flaw tip and the local tensile stress must be sufficiently large to crack the hydride (a crack will not extend if the threshold in the stress intensity factor, KIH, is not exceeded. A high-temperature limit exists when the yield stress of the cladding alloy becomes too low to crack the hydride. In this paper we describe measurements of KIH and the crack growth rate, V, in unirradiated Zircaloy-4 fuel cladding containing approximately 130 ppm hydrogen in the cold-worked stress-relieved condition representing pressurized water reactors (PWRs) and pressurized heavy-water (PHWR) reactors. Four methods are used to evaluate KIH. The test specimen and fixture used in these methods was the pin-loading tension configuration. The test temperature ranged from 227 to 315°C. The mean value of KIH below 280°C had little temperature dependence; it was about 5.5 MPa?m in the PWR cladding and slightly higher at 7 MPa?m in the PHWR material. At higher test temperatures, KIH increased dramatically to more than 12 MPa?m, whereas the crack growth rate declined toward zero. This behavior suggests that unirradiated Zircaloy-4 fuel cladding is immune from DHC above about 320°C; this temperature may be increased to 360°C by irradiation. The implications for spent fuel storage are that during early storage when the temperatures are high, any flaw will not extend by DHC, whereas at low temperatures, after many years of storage, flaws would have to be very large, approaching through wall, before being extended by DHC. To date, spent nuclear fuel is not known to have failed by DHC during storage, confirming the inference.
Book Synopsis Creep of Zirconium Alloys in Nuclear Reactors by :
Download or read book Creep of Zirconium Alloys in Nuclear Reactors written by and published by ASTM International. This book was released on with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crack Propagation Tests on Normal and Hydrided Zircaloy-2 Reactor Pressure Tubing by : R. C. Aungst
Download or read book Crack Propagation Tests on Normal and Hydrided Zircaloy-2 Reactor Pressure Tubing written by R. C. Aungst and published by . This book was released on 1964 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creep of Zirconium Alloys in Nuclear Reactors by : D. G. Franklin
Download or read book Creep of Zirconium Alloys in Nuclear Reactors written by D. G. Franklin and published by ASTM International. This book was released on 1983 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Delayed Hydride Cracking of Zirconium Alloy Fuel Cladding by :
Download or read book Delayed Hydride Cracking of Zirconium Alloy Fuel Cladding written by and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This publication examines the phenomena of delayed hydride cracking (DHC) in Zircaloy-4 claddings and presents the results of a coordinated research project on this subject. It discusses the circumstances and the mechanisms that lead to DHC in Zircaloy-4 cladding materials and documents the knowledge gained through an inter-laboratory comparison where the physical conditions for DHC have been studied. An advanced DHC testing methodology developed in Studsvik, Sweden, and consistent experimental data of international round-robin DHC velocity measurements in CANDU/PHWR and LWR cladding Zircaloy-4 materials are also attached ... Subject Classification : 0800 - Nuclear fuel cycle and waste management. Responsible Officer : Mr. Victor Inozemtsev, NEFW."--Résumé de l'éditeur.
Book Synopsis Measurement of Rates of Delayed Hydride Cracking (DHC) in Zr-2.5Nb Alloys--An IAEA Coordinated Research Project by : Christopher E. Coleman
Download or read book Measurement of Rates of Delayed Hydride Cracking (DHC) in Zr-2.5Nb Alloys--An IAEA Coordinated Research Project written by Christopher E. Coleman and published by . This book was released on 2008 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Values of DHC rates in Zr alloys are sensitive to measurement procedures. A standard method has been developed at the laboratories of AECL and evaluated in a round-robin involving ten IAEA member states. Two test materials were used--Zr-2.5Nb pressure tubes in the cold-worked (CANDUTM) and heat-treated (RBMK) conditions. Cracks were grown from fatigued starter cracks in the axial direction on the axial-radial plane of the original tubes. To obtain the maximum value of Vc, specimens were heated to dissolve all their hydrogen, then cooled at 1 to 3°C/min to the test temperature before loading at 15 MPa?m. Although the start of cracking was detected by potential drop, the extent of cracking was measured directly on the crack faces. The values of incubation time to the start of cracking were highly variable but Vc was well behaved. The values of Vc were normally distributed with a range varying from a factor of 1.2 to 5.2. At 250°C the mean value of Vc from 80 specimens of cold-worked material was 8.9(±1.12)x10-8 m/s and from 41 specimens of heat-treated material the mean value of Vc was3.3(±0.64)x10-8 m/s. Tests were also done at six other temperatures between 144 and 283°C, using up to 22 specimens at each temperature. Both materials had an Arrhenius-type temperature dependence, Vc=Aexp(-Q/RT). The use of strictly defined and coordinated experimental procedures gave a consistent set of Vc values, allowing effective comparison of results obtained in different national laboratories and resulting in good correlations between the DHC velocity values and differences in strength, crystallographic texture, and distribution of ?-phase in the test materials.
Book Synopsis Susceptibility of Zirconium Alloys to Delayed Hydrogen Cracking by : JFR Ambler
Download or read book Susceptibility of Zirconium Alloys to Delayed Hydrogen Cracking written by JFR Ambler and published by . This book was released on 1977 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smooth and notched cantilever beams and round-notched bars were machined from pressure tubes of cold-worked Zr-2.5Nb and Zircaloy-2. They were loaded in the temperature range 290 to 520 K. After two thermal cycles and at high stress, cracks were initiated in smooth beams of cold-worked Zr-2.5Nb. Under the same test conditions, cold-worked Zircaloy-2 plastically deformed with no cracking. When notches were present, cracks propagated at the same rate in both materials by delayed hydrogen cracking. In cold-worked Zr-2.5Nb, the crack velocity followed an Arrhenius plot with an apparent activation energy of 42 kJ/mol. Below 420 K, the threshold stress intensity factor for delayed hydrogen cracking was about 5 MPa m. Therefore, cracking can be prevented by keeping tensile stresses very low.
Book Synopsis Hydrogen concentration limit and critical temperatures for delayed hydride cracking in zirconium alloys by : S.-Q. Shi
Download or read book Hydrogen concentration limit and critical temperatures for delayed hydride cracking in zirconium alloys written by S.-Q. Shi and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nucirc2 is a steady state thermohydraulic code designed to analyze the primary heat transport system of a candu nuclear reactor for a variety of operating conditions. this document describes the nucirc2 capabilities and options as well as the information necessary for the preparation of the input data.
Book Synopsis Advances in the theory of delayed hydride cracking in zirconium alloys by : S-Q. Shi
Download or read book Advances in the theory of delayed hydride cracking in zirconium alloys written by S-Q. Shi and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zirconium written by Oswald Kubaschewski and published by . This book was released on 1976 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Initiation of Delayed Hydride Cracking in Zr-2.5Nb Micro Pressure Tubes by : Ravi Kumar Sundaramoorthy
Download or read book Initiation of Delayed Hydride Cracking in Zr-2.5Nb Micro Pressure Tubes written by Ravi Kumar Sundaramoorthy and published by . This book was released on 2009 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure tubes pick up hydrogen while they are in service within CANDU reactors. Sufficiently high hydrogen concentration can lead to hydride precipitation during reactor shutdown/repair at flaws, resulting in the potential for eventual rupture of the pressure tubes by a process called Delayed Hydride Cracking (DHC). The threshold stress intensity factor (KIH) below which the cracks will not grow by delayed hydride cracking of Zr-2.5Nb micro pressure tubes (MPTs) has been determined using a load increasing mode (LIM) method at different temperatures. MPTs have been used to allow easy study of the impact of properties like texture and grain size on DHC. Previous studies on MPTs have focused on creep and effects of stress on hydride orientation; here the use of MPTs for DHC studies is confirmed for the first time. Micro pressure tube samples were hydrided to a target hydrogen content of 100 ppm using an electrolytic method. For DHC testing, 3 mm thick half ring samples were cut out from the tubes using Electrical Discharge Machining (EDM) with a notch at the center. A sharp notch with a root radius of 15 mu m was introduced by broaching to facilitate crack initiation. The direct current potential drop method was used to monitor crack growth during the DHC tests. For the temperature range tested the threshold stress intensity factors for the micro pressure tube used were found to be 6.5-10.5 MPa.m1/2 with the value increasing with increasing temperature. The average DHC velocities obtained for the three different test temperatures 180, 230 and 250oC were 2.64, 10.87 and 8.45 x 10-8 m/s, respectively. The DHC data obtained from the MPTs are comparable to the data published in the literature for full sized CANDU pressure tubes.
Book Synopsis Prevention of delayed hydride cracking in zirconium alloys by : B. A. Cheadle
Download or read book Prevention of delayed hydride cracking in zirconium alloys written by B. A. Cheadle and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
