Statistical analysis of events related to emergency diesel generators failures in the nuclear industry

Kančev, Duško; Duchac, Alexander; Benoît, Zerger; Maqua, Michael; Wattrelos, Didier

doi:10.1016/j.nucengdes.2014.03.050

Cited by 8 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The used methodology was utilized previously for identification of operational events of the diesel generators failures [13] and LOOP events [14].…”

Section: Events Identification and Classification Methodologymentioning

confidence: 99%

Analysis of Loss of Essential Power System Reported in Nuclear Power Plants

Volkanovski

Veira

2018

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

The essential power supply system is important for the nuclear safety and accident mitigation of the currently operating nuclear power plants. This system provides electrical power to the essential instrumentation and control systems of the nuclear power plant when all alternate current power sources are lost. This event is known as station blackout (SBO) event. Operational events of failure or deficiency of the essential power supply system are analyzed in this paper. The relevant events were searched and identified in four databases of operational events. The report includes events identified in French SAPIDE and German VERA operational events records for the time period 1996 to 2015. The International Atomic Energy Agency (IAEA) IRS and Nuclear Regulatory Commission (NRC) LER operational events databases were screened for relevant events that occurred in the period between 2000 and 2016. In total, 308 relevant events are identified in the SAPIDE, 103 in VERA, 56 in LER, and 15 in IRS operational events database. Classification and in-depth analysis were done on the identified events considering the following predefined categories: the plant status during the event, circumstances, affected equipment, cause of the event (direct and root), and implications of the event on plant safety. Main findings from the evaluation of the events are presented. Observations of the causes resulting in the events and potential actions that can decrease the number and consequences of the events are presented.

show abstract

“…The used methodology was utilized previously for identification of operational events of the diesel generators failures [13] and LOOP events [14].…”

Section: Events Identification and Classification Methodologymentioning

confidence: 99%

Analysis of Loss of Essential Power System Reported in Nuclear Power Plants

Volkanovski

Veira

2018

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

show abstract

“…Within the microgrid area, human errors usually emerge without warning but have a tremendous impact. Whether it is an instant impact, such as the immediate failure of the equipment or is long deteriorated system, such as mishandling the worn-out component [92]. From outside the microgrid, the long-distance operator sometimes causes a ruckus in the cyber setting of the microgrid and disturbs the transmission line or distribution network [93] [94].…”

Section: Other Performance Reduction Factormentioning

confidence: 99%

“…The microgrid lost the power support Loss of power supply [91] The transmission line setting is not properly conducted Energy supply disturbance Expected energy not achieved [92] Human error in DG operation led to DG Failure Energy production is disturbed Expected energy not achieved [93] The cyber failure led to a fault in the transmission line Disturbance on the transmission network Expected energy not achieved [98] Unsupportive policy on item procurement Acquiring a low-quality item Early microgrid failure…”

Section: Refmentioning

confidence: 99%

Component degradation and system deterioration: An overview of early termination of PV-DG microgrid system

Atmaja

Said

Idrus

et al. 2022

J. Mechatron. Electr. Power Veh. Technol.

View full text Add to dashboard Cite

Degradation of components and system failure within the microgrid system is deteriorating the performance of electrification. The aim of this study is to discuss the relationship and connections between issues resulting from degradation and deterioration in the microgrid system, in addition to introducing the prominent impacts which may eventually lead to the premature termination of the microgrid system. This study explored the microgrid degradation and deterioration issues within four microgrid sections: generation section, storage section, transmission section, and distribution section. Subsequently, this study analyzes, derives, and classifies all emerging issues into four types of prominent impacts. The degradation and deterioration invoked many component performance issues into four main damaging outcomes, namely (i) deteriorated transmission line yielded issues regarding expected energy not achieved; (ii) energy deficit and unpredicted blackout come after the depth of discharge (DOD) reduction and invoke a loss of power supply; (iii) a shorter battery life cycle, shorter transformer lifespan, and decreased DG lifetime concluded as a shorter microgrid life expectancy; and (iv) rapid microgridbroke down and the crash of the key component inadvertently fastened the time to failure and gave rise to the early failure of a microgrid system. It is envisaged that the discussion in this study can provide useful mapped information for the researcher, stakeholder, operator, and other parties for thoroughly addressing various degradation and deterioration issues and anticipating the early termination of the microgrid system.

show abstract

“…The relevant events were selected and classified based on predefined criteria. The methodology for events screening and selection was also applied for analysis of the EDG failures presented in [5].…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Loss of Offsite Power Events

Volkanovski

Avila

Veira

2016

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

This paper presents the results of the statistical analysis of the loss of offsite power events (LOOP) registered in four reviewed databases. The reviewed databases include the IRSN (Institut de Radioprotection et de Sûreté Nucléaire) SAPIDE database and the GRS (Gesellschaft für Anlagen- und Reaktorsicherheit mbH) VERA database reviewed over the period from 1992 to 2011. The US NRC (Nuclear Regulatory Commission) Licensee Event Reports (LERs) database and the IAEA International Reporting System (IRS) database were screened for relevant events registered over the period from 1990 to 2013. The number of LOOP events in each year in the analysed period and mode of operation are assessed during the screening. The LOOP frequencies obtained for the French and German nuclear power plants (NPPs) during critical operation are of the same order of magnitude with the plant related events as a dominant contributor. A frequency of one LOOP event per shutdown year is obtained for German NPPs in shutdown mode of operation. For the US NPPs, the obtained LOOP frequency for critical and shutdown mode is comparable to the one assessed in NUREG/CR-6890. Decreasing trend is obtained for the LOOP events registered in three databases (IRSN, GRS, and NRC).

show abstract

Statistical analysis of events related to emergency diesel generators failures in the nuclear industry

Cited by 8 publications

References 7 publications

Analysis of Loss of Essential Power System Reported in Nuclear Power Plants

Analysis of Loss of Essential Power System Reported in Nuclear Power Plants

Component degradation and system deterioration: An overview of early termination of PV-DG microgrid system

Statistical Analysis of Loss of Offsite Power Events

Contact Info

Product

Resources

About