An Evaluation Methodology Development and Application Process for Severe Accident Safety Issue Resolution

Martin, Roy E.

doi:10.1155/2012/735719

Cited by 5 publications

(2 citation statements)

References 21 publications

(22 reference statements)

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“…Although the emphasis of the safety analysis is on a deterministic evaluation that safety criteria are met, concerns relating to overall plant safety and the risk impact of power uprates also require that the safety margins be evaluated with Probabilistic Safety Analysis (PSA) methods (Martin, 2012). This is necessary to support and supplement deterministic analysis, technical judgment and to enable risk informed decision making process.…”

Section: Safety Marginsmentioning

confidence: 99%

Analysis of Power Uprate in Nuclear Power Plants

Nuñez-Carrera¹,

Carreño-Padilla²,

Espinosa-Martínez³

et al. 2017

Energy Research Journal

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The three main strategies used by the utilities in order to obtain more benefits from the nuclear installations focused on electricity production and in order to satisfy their demand without carbon dioxide emissions are: (1) Power uprate, (2) plant life management and (3) plant life extension. Alone in the United States, the Nuclear Regulatory Commission has approved more than 140 Nuclear Power Plant (NPP) power uprates since 1977, which represent the equivalent of five new Nuclear Power Plants (NPPs). While in the rest of the world the NPP uprates represent the equivalent of two new NPP. This study is a compilation of the power uprate experience in the whole world and a discussion about important problems detected due to this process in Light Water Reactors (LWR), specifically for Boiling Water Reactors (BWR). The power uprate involves the reanalysis of many topics in order to assure that the safety operational margins are kept. The new radiological consequences, structural integrity of the systems, vibrations, core heat balance and thermal-hydraulics behavior under transient and accident conditions, are some of the aspects to be considered during power uprate processes. As special case the Laguna Verde Power Nuclear Power Plant (LVNPP) Extended Power Uprate (EPU) is presented, whose experience indicated that the steam dryer loads are crucial for uprates in BWR´s.

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Section: Safety Marginsmentioning

confidence: 99%

Analysis of Power Uprate in Nuclear Power Plants

Nuñez-Carrera¹,

Carreño-Padilla²,

Espinosa-Martínez³

et al. 2017

Energy Research Journal

View full text Add to dashboard Cite

show abstract

“…(Erbacher & Leistikow, 1985) La evaluación preliminar de los posibles estados de daño del núcleo de un BWR proporcionará suficiente información para la resolución de problemas graves de seguridad en accidentes. (Martin, 2012) Se presentó una simulación hipotética de un LOCA con SBO y sin inyección de agua de refrigeración con la propuesta de evaluar la distribución de temperatura y el calentamiento de la parte inferior de la RPV. El código SCDAPSIM/RELAP5 3.2 se usó para construir el modelo del BWR y realizar la simulación numérica.…”

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