Aging management of containment structures in nuclear power plants

Naus, D.J.; Oland, C.B.; Ellingwood, Bruce R.; Graves, Herman; Norris, W.E.

doi:10.1016/s0029-5493(96)01254-x

Cited by 15 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In nuclear power generating facilities, RSC has been used for containment structures lined with steel surrounding a reactor or steam generator [ 8 ]. RSC that is used to protect a reactor needs to have a high content of heavyweight coarse aggregate to attenuate radiation [ 7 ]. For the secondary containment, which includes the steam generator, prestressed concrete is required to contain the high pressure generated from the pressurized steam generator [ 8 ].…”

Section: Classifications and Major Functions Of Rscmentioning

confidence: 99%

“…The composition of RSC is mostly similar to that of conventional concrete except for its aggregates. Certain RSCs incorporate a heavyweight aggregate to improve their radiation shielding property, hence requiring less thickness for a containment structure [ 7 ]. Similar to conventional concrete, RSC is made of a binder, aggregate, and additive.…”

Section: Alternative Materials Used In Rscmentioning

confidence: 99%

“…The shielding performance of concrete is improved with the incorporation of nano-material, as steel and glass provide higher EM shielding [ 220 ]. For RSC, it has been used as construction material for nuclear-related structures; more than 60% of light water reactor nuclear power plants in the United States are constructed using RSC [ 7 ]. RSC is employed in pressurized water reactor shield and boiling water reactor buildings.…”

Section: Applications Of Rscmentioning

confidence: 99%

“…Concrete has been used in the construction of nuclear power plants since before 1975 [ 7 ]. It has certain advantages, such as low permeability to protect embedded steel reinforcement, durability against fire, ubiquitous materials for forming concrete, and flexibility to form any molded shapes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

et al. 2022

View full text Add to dashboard Cite

Nuclear energy offers a wide range of applications, which include power generation, X-ray imaging, and non-destructive tests, in many economic sectors. However, such applications come with the risk of harmful radiation, thereby requiring shielding to prevent harmful effects on the surrounding environment and users. Concrete has long been used as part of structures in nuclear power plants, X-ray imaging rooms, and radioactive storage. The direction of recent research is headed toward concrete’s ability in attenuating harmful energy radiated from nuclear sources through various alterations to its composition. Radiation shielding concrete (RSC) is a composite-based concrete that was developed in the last few years with heavy natural aggregates such as magnetite or barites. RSC is deemed a superior alternative to many types of traditional normal concrete in terms of shielding against the harmful radiation, and being economical and moldable. Given the merits of RSCs, this article presents a comprehensive review on the subject, considering the classifications, alternative materials, design additives, and type of heavy aggregates used. This literature review also provides critical reviews on RSC performance in terms of radiation shielding characteristics, mechanical strength, and durability. In addition, this work extensively reviews the trends of development research toward a broad understanding of the application possibilities of RSC as an advanced concrete product for producing a robust and green concrete composite for the construction of radiation shielding facilities as a better solution for protection from sources of radiation. Furthermore, this critical review provides a view of the progress made on RSCs and proposes avenues for future research on this hotspot research topic.

show abstract

Section: Classifications and Major Functions Of Rscmentioning

confidence: 99%

Section: Alternative Materials Used In Rscmentioning

confidence: 99%

Section: Applications Of Rscmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

et al. 2022

View full text Add to dashboard Cite

show abstract

“…However, there have been several instances where the capacity of the containment or other safety-related structures has been challenged by sources of degradation. A questionnaire was sent to U.S. utilities concerning inspection, degradation and repair of reinforced concrete structures in light-water reactor plants (Naus, et al 1994). Responses provided by 29 utilities representing 41 units revealed that the majority of plants are inspected visually only in compliance with integrated-leak rate tests and surveillance of post-tensioning systems as required by RG 1.…”

Section: Nuleg/cr-6425mentioning

confidence: 99%

Impact of structural aging on seismic risk assessment of reinforced concrete structures in nuclear power plants

Ellingwood¹,

Song²

1996

View full text Add to dashboard Cite

The Structural Aging Program is addressing the potential for degradation of concrete structural components and systems in nuclear power plants over time due to aging and aggressive environmental stressors. Structures are passive under normal operating conditions but play a key role in mitigating design-basis events, particularly those arising from external challenges such as earthquakes, extreme winds, fires and floods. Structures are plant-specific and unique,.often are difficult to inspect, and are virtually impossible to replace. The importance of structural failures in accident mitigation is amplified because such failures may lead to common-cause failures of other components. Structural condition assessment and service life prediction must focus on a few critical components and systems within the plant. Components and systems that are dominant contributors to risk and that require particular attention can be identified through the mathematical formalism of a probabilistic risk assessment, or PRA. To illustrate, the role of structural degradation due to aging on plant risk is examined through the framework of a Level 1 seismic PRA of a nuclear power plant. Plausible mechanisms of structural degradation are found to increase the core damage probability by approximately a factor of two.

show abstract

Progress in Ionizing Radiation Shielding Materials

Wu,

Wang

2024

Adv Eng Mater

View full text Add to dashboard Cite

The continuous development of ionizing radiation in medical imaging and treatment, nuclear reactors, food irradiation, and other fields is accompanied by potential risks. It protects related equipment and personnel by adopting radiation shielding materials to reduce irradiation. Due to the advancement of science and technology, many high‐performance radiation protection materials have been reported. Ionizing radiation is a complex environment involving X‐ray imaging, radiation therapy, nuclear power operation, and space radiation. Irradiation energy, irradiation type, and the measurement of shielding material have essential effects on shielding efficiency. However, there has not been a general review of the preparations and properties of ionizing radiation shielding materials in the light of different matrixes in recent years. Herein, a comprehensive overview of recent advancements in radiation shielding materials, categorized into alloys, concretes, glasses and ceramics, and polymer composites, is presented. Furthermore, the synthesis methods employed for these materials and their respective radiation shielding properties are discussed. Finally, the current research gap and possible future scope of radiation shielding materials are proposed.

show abstract

Aging management of containment structures in nuclear power plants

Cited by 15 publications

References 10 publications

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

Impact of structural aging on seismic risk assessment of reinforced concrete structures in nuclear power plants

Progress in Ionizing Radiation Shielding Materials

Contact Info

Product

Resources

About