Author: C. Z Serpan (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The deleterious effect of high energy neutrons upon the mechanical properties of reactor pressure vessel steels has prompted the employment of material surveillance programs in many nuclear power plants. These programs provide for the exposure of test specimens representative of the reactor pressure vessel at in-reactor locations, wherein they will experience the same thermal and radiation damage history as the vessel itself. Evaluation of these specimens, which reveals the progressive changes in the mechanical properties of the vessel, provides a basis upon which operational procedures and maximum lifetime exposure may be formulated for the plant. A review and an analysis of several instances of shortcomings in surveillance programs are presented along with a set of recommendations for consideration in planning new surveillance programs. In utilizing these recommendations, pressure vessel surveillance programs can be made to provide valuable information for use in determining plant operations; at the same time results from these programs may add to the general knowledge of radiation effects in pressure vessel steels or other materials subject to radiation. Recognition of the value of surveillance programs and their conscientious application should further the public acceptance of nuclear reactors as safe alternative power systems.
Radiation Damage Surveillance of Power Reactor Pressure Vessels
Author: C. Z Serpan (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The deleterious effect of high energy neutrons upon the mechanical properties of reactor pressure vessel steels has prompted the employment of material surveillance programs in many nuclear power plants. These programs provide for the exposure of test specimens representative of the reactor pressure vessel at in-reactor locations, wherein they will experience the same thermal and radiation damage history as the vessel itself. Evaluation of these specimens, which reveals the progressive changes in the mechanical properties of the vessel, provides a basis upon which operational procedures and maximum lifetime exposure may be formulated for the plant. A review and an analysis of several instances of shortcomings in surveillance programs are presented along with a set of recommendations for consideration in planning new surveillance programs. In utilizing these recommendations, pressure vessel surveillance programs can be made to provide valuable information for use in determining plant operations; at the same time results from these programs may add to the general knowledge of radiation effects in pressure vessel steels or other materials subject to radiation. Recognition of the value of surveillance programs and their conscientious application should further the public acceptance of nuclear reactors as safe alternative power systems.
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The deleterious effect of high energy neutrons upon the mechanical properties of reactor pressure vessel steels has prompted the employment of material surveillance programs in many nuclear power plants. These programs provide for the exposure of test specimens representative of the reactor pressure vessel at in-reactor locations, wherein they will experience the same thermal and radiation damage history as the vessel itself. Evaluation of these specimens, which reveals the progressive changes in the mechanical properties of the vessel, provides a basis upon which operational procedures and maximum lifetime exposure may be formulated for the plant. A review and an analysis of several instances of shortcomings in surveillance programs are presented along with a set of recommendations for consideration in planning new surveillance programs. In utilizing these recommendations, pressure vessel surveillance programs can be made to provide valuable information for use in determining plant operations; at the same time results from these programs may add to the general knowledge of radiation effects in pressure vessel steels or other materials subject to radiation. Recognition of the value of surveillance programs and their conscientious application should further the public acceptance of nuclear reactors as safe alternative power systems.
Radiation Embrittlement and Surveillance of Nuclear Reactor Pressure Vessels: An International Study
Author: L. E. Steele
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 226
Book Description
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 226
Book Description
Status of USA Nuclear Reactor Pressure Vessel Surveillance for Radiation Effects
Author: Lendell E. Steele
Publisher: ASTM International
ISBN: 9780803102293
Category : Technology & Engineering
Languages : en
Pages : 290
Book Description
Publisher: ASTM International
ISBN: 9780803102293
Category : Technology & Engineering
Languages : en
Pages : 290
Book Description
Procedures for Interpreting the Structural Implications of Radiation-Damage Surveillance Results on Nuclear Pressure Vessels
Author: L. E. Steele
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
The structural implications of radiation effects to nuclear reactor pressure vessels are assessed primarily through surveillance programs in which the properties of the vessel are projected from an evaluation of small specimens of the vessel steel. In the USA, the current fracture-safe criterion requires that the vessel operating temperature, at certain stress levels, be at the FTE (Fracture Transition Elastic) temperature, defined as NDT+60F(33C), derived from surveillance measurements. Review of available data from five reactor surveillance programs indicates that this criterion is adequate for the vessels concerned. Complete assurance of fracture-safe operating conditions can be attained through a limit-analysis procedure that considers and integrates the effects of five factors: (a) the radiation-induced shift in transition temperature, (b) the initial shelf energy, (c) the radiation-reduced ductile shelf energy, (d) the effects of the fluence (and toughness) gradient through a thick vessel wall, and (3) the effects of thickness-induced mechanical constraint. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
The structural implications of radiation effects to nuclear reactor pressure vessels are assessed primarily through surveillance programs in which the properties of the vessel are projected from an evaluation of small specimens of the vessel steel. In the USA, the current fracture-safe criterion requires that the vessel operating temperature, at certain stress levels, be at the FTE (Fracture Transition Elastic) temperature, defined as NDT+60F(33C), derived from surveillance measurements. Review of available data from five reactor surveillance programs indicates that this criterion is adequate for the vessels concerned. Complete assurance of fracture-safe operating conditions can be attained through a limit-analysis procedure that considers and integrates the effects of five factors: (a) the radiation-induced shift in transition temperature, (b) the initial shelf energy, (c) the radiation-reduced ductile shelf energy, (d) the effects of the fluence (and toughness) gradient through a thick vessel wall, and (3) the effects of thickness-induced mechanical constraint. (Author).
Analysis of Reactor Vessel Radiation Effects Surveillance Programs
Author: Lendell E. Steele
Publisher: ASTM International
ISBN: 9780803100664
Category : Freshwater microbiology
Languages : en
Pages : 269
Book Description
Publisher: ASTM International
ISBN: 9780803100664
Category : Freshwater microbiology
Languages : en
Pages : 269
Book Description
Radiation Damage Exposure and Embrittlement of Reactor Pressure Vessels
Author: K. Shure
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 72
Book Description
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 72
Book Description
Status of Usa Nuclear Reactor Pressure Vessel Surveillance for Radiation Effects
LWR Pressure Vessel Surveillance Dosimetry Improvement Program
Author:
Publisher:
ISBN:
Category : Light water reactors
Languages : en
Pages : 212
Book Description
Publisher:
ISBN:
Category : Light water reactors
Languages : en
Pages : 212
Book Description
Status of Usa Neuclear Reactor Pressure Vessel Surveillance for Radiation Effects
Integrity of Reactor Pressure Vessels in Nuclear Power Plants
Author:
Publisher:
ISBN: 9789201017093
Category : Business & Economics
Languages : en
Pages : 0
Book Description
This publication is intended to assist nuclear utilities in optimizing the service life of nuclear power plants. It reviews the latest research on the effects of neutron irradiation on the steels and welds of reactor pressure vessels within light water cooled and moderated reactors.
Publisher:
ISBN: 9789201017093
Category : Business & Economics
Languages : en
Pages : 0
Book Description
This publication is intended to assist nuclear utilities in optimizing the service life of nuclear power plants. It reviews the latest research on the effects of neutron irradiation on the steels and welds of reactor pressure vessels within light water cooled and moderated reactors.