In-Service Inspection Guidelines for Concrete Structures in Nuclear Power Plants PDF Download
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Author: C. J. Hookham
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 77
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Book Description
Author: C. J. Hookham
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 77
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Book Description
Author: Dan J. Naus
Publisher: RILEM Publications
ISBN: 9782912143075
Category : Concrete
Languages : en
Pages : 224
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Book Description
Author: U.S. Atomic Energy Commission
Publisher:
ISBN:
Category : Nuclear power plants
Languages : en
Pages : 252
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Safety-related nuclear power plant concrete structures are described and commentary on continued service assessments of these structures is provided. In-service inspection and testing requirements in the U.S. are summarized. The license renewal process in the U.S. is outlined and its current status noted. A summary of operating experience related to U.S. nuclear power plant concrete structures is presented. Several candidate areas are identified where additional research would be of benefit to aging management of NPP concrete structures. Finally current ORNL activities related to aging-management of concrete structures are outlined: development of operating experience database, application of structural reliability theory, and compilation of elevated temperature concrete material property data and information.
Author: D. J. Naus
Publisher:
ISBN:
Category : Nuclear power plants
Languages : en
Pages : 300
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Book Description
The Structural Aging Program provides the US Nuclear Regulatory Commission with potential structural safety issues and acceptance criteria for use in continued service assessments of nuclear power plant safety-related concrete structures. The program was organized under four task areas: Program Management, Materials Property Data Base, Structural Component Assessment/Repair Technology, and Quantitative Methodology for Continued Service Determinations. Under these tasks, over 90 papers and reports were prepared addressing pertinent aspects associated with aging management of nuclear power plant reinforced concrete structures. Contained in this report is a summary of program results in the form of information related to longevity of nuclear power plant reinforced concrete structures, a Structural Materials Information Center presenting data and information on the time variation of concrete materials under the influence of environmental stressors and aging factors, in-service inspection and condition assessments techniques, repair materials and methods, evaluation of nuclear power plant reinforced concrete structures, and a reliability-based methodology for current and future condition assessments. Recommendations for future activities are also provided. 308 refs., 61 figs., 50 tabs.
Author: Tarek M. Refai
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 94
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Book Description
Safety-related nuclear power plant (NPP) structures are designed to withstand loadings from a number of low-probability external and interval events, such as earthquakes, tornadoes, and loss-of-coolant accidents. Loadings incurred during normal plant operation therefore generally are not significant enough to cause appreciable degradation. However, these structures are susceptible to aging by various processes depending on the operating environment and service conditions. The effects of these processes may accumulate within these structures over time to cause failure under design conditions, or lead to costly repair. In the late 1980s and early 1990s several occurrences of degradation of NPP structures were discovered at various facilities (e.g., corrosion of pressure boundary components, freeze- thaw damage of concrete, and larger than anticipated loss of prestressing force). Despite these degradation occurrences and a trend for an increasing rate of occurrence, in-service inspection of the safety-related structures continued to be performed in a somewhat cursory manner. Starting in 1991, the U.S. Nuclear Regulatory Commission (USNRC) published the first of several new requirements to help ensure that adequate in-service inspection of these structures is performed. Current regulatory in-service inspection requirements are reviewed and a summary of degradation experience presented. Nondestructive examination techniques commonly used to inspect the NPP steel and concrete structures to identify and quantify the amount of damage present are reviewed. Finally, areas where nondestructive evaluation techniques require development (i.e., inaccessible portions of the containment pressure boundary, and thick heavily reinforced concrete sections are discussed.
Author: International Atomic Energy Agency
Publisher: IAEA Nuclear Energy
ISBN: 9789201029140
Category : Science
Languages : en
Pages : 0
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Book Description
This publication is one in a series of reports on the assessment and management of ageing of major nuclear power plant (NPP) components. Current practices for assessment of safety margins (fitness for service) and inspection, monitoring and mitigation of ageing related degradation of selected concrete structures related to NPPs are documented. Implications for and differences in new reactor designs are discussed. This information is intended to help all involved directly and indirectly in ensuring the safe operation of NPPs, and also to provide a common technical basis for dialogue between plant operators and regulators when dealing with age related licensing issues.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Nuclear power plant concrete structures are described. In-service inspection and testing requirements in the U.S. are summarized. The license renewal process in the U.S. is outlined and its current status provided. Operating experience related to performance of the concrete structures is presented. Basic components of a program to manage aging of the concrete structures are identified and described: degradation mechanisms, damage models, and material performance; assessment and remediation (i.e., component selection, in-service inspection, non-destructive examinations, and remedial actions); and estimation of performance at present or some future point in time (i.e., application of structural reliability theory to the design and optimization of in-service inspection/maintenance strategies, and determination of the effects of degradation on plant risk). Finally, areas are noted where additional research would be of benefit to aging management of nuclear power plant concrete structures.
Author: International Atomic Energy Agency
Publisher: Bernan Press(PA)
ISBN:
Category : Business & Economics
Languages : en
Pages : 68
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Book Description
This guide outlines provisions for the preparation of in-service inspection programmes for critical systems and components of primary reactor coolant systems. Recommendations cover methods and techniques applicable to in-service inspection and the minimum frequency of examinations and tests. Methods of evaluating the results are described and acceptance standards defined. Methods of preparing the necessary documentation, procedures and records are recommended.
