Applicability of Pseudoprobabilistic Method of Liquefaction Hazard Assessment for Nuclear Power Plants at Diffuse Seismicity Sites

Katona, Tamás János; Győri, Erzsébet; Tóth, László

doi:10.1155/2019/5010814

Cited by 5 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rate of change is decreasing with increasing return period. The same conservatism level of the two approaches at high return periods was not reached as it was noted by Katona et al [16], nevertheless the conservatism of the pseudo-probabilistic approach reduced considerably.…”

Section: Resultssupporting

confidence: 58%

“…Katona et al [16] performed a similar analysis for the site of Paks NPP, however the considered return periods were considerably larger: 10,000 and 100,000 years, which are typical for design and safety analyses for nuclear power plants. The authors proposed a simple method, that is based on the proper selection of M w as mean value from the distribution of magnitudes contributing to the mean a max at given hazard level, for the evaluation of liquefaction hazard for screening and margin assessment purposes.…”

Section: Liquefaction Hazard In Areas With Low To Moderate Seismicitymentioning

confidence: 99%

See 1 more Smart Citation

Characterization and Liquefaction Hazard Assessment of Two Hungarian Liquefied Sites from the 1956 Dunaharaszti Earthquake

Bán¹,

Győri²,

Tóth³

et al. 2020

Period. Polytech. Civil Eng.

Self Cite

View full text Add to dashboard Cite

The seismicity of Hungary can be considered moderately active, nevertheless contemporary reports from the past approx. 350 years documented surface manifestations of liquefaction occurrences. The last such earthquake was the 1956 Dunaharaszti ground motion, for which the location of two liquefied sites could be identified approx. 60 years after the event. This provided an excellent opportunity to analyze possibly the only accessible liquefied sites in Hungary. Analysis of the two sites included field and laboratory tests allowing the back-calculation of maximum horizontal ground acceleration of the earthquake. This parameter was previously unknown because the closest seismometer saturated during the event. The performed back-analysis using the principles of paleoliquefaction studies was the first of such analyses in the country. In areas with low to moderate seismicity, geotechnical engineers often neglect and overlook liquefaction hazard, however, when it is addressed, the hazard is often overestimated due to improper characterization of the seismic loading and site characterization. To explore this observation more deeply, probabilistic seismic and liquefaction hazard assessment were carried out at the two liquefied sites and it was found that this conclusion is also valid for Hungary, but the degree of conservatism of the pseudo-probabilistic procedures decreases with increasing earthquake return period (lower annual probability of occurrence).

show abstract

Section: Resultssupporting

confidence: 58%

Section: Liquefaction Hazard In Areas With Low To Moderate Seismicitymentioning

confidence: 99%

Characterization and Liquefaction Hazard Assessment of Two Hungarian Liquefied Sites from the 1956 Dunaharaszti Earthquake

Bán¹,

Győri²,

Tóth³

et al. 2020

Period. Polytech. Civil Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It does not seem practicable to assume that the site location can be affected by several sources within the site area. Furthermore, it should be noted that, in case of seismic design basis at hazard levels 10 −4 to 10 −5 per annum, the dominating sources are generally close to the site (see, Figure 1) and the magnitudes tend to maximum potential (or cut-off) magnitude Mw max * (see, Figure 2) for the Paks site, Hungary [27].…”

Section: Concept Proposed For Definition Of Design Basis Pgdmentioning

confidence: 99%

Safety of Nuclear Power Plants with Respect to the Fault Displacement Hazard

Katona

2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

The hazard of permanent ground displacements/deformations can challenge the safety of the nuclear power plants. Increasing knowledge of the hazard and development of methods for structure–fault–displacement interaction motivates the designing of nuclear power plants for permanent ground displacement instead of abandoning the sites that could be affected by this kind of hazard. For the design basis, permanent ground displacement should be defined at the hazard level that complies with the probabilistic criteria for accounting for the natural hazards in the design that also ensure compliance with probabilistic safety criteria. In this paper, a procedure is proposed for the definition of the design basis permanent ground displacement that is based on the deaggregation of seismic design basis hazard. The definition of the displacement for the margin evaluation is also proposed. The feasibility of safe design is also demonstrated for the proposed definition of design basis hazard via qualitative judgement on the sensitivity of the structures, systems and components ensuring the fundamental safety functions with respect to the permanent ground displacement that is supported by existing case studies.

show abstract

“…e estimated LPI or other related hazards are assumed to correspond to the same return period of PGA. is approach is named the "pseudoprobabilistic" approach [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Introduction and Application of a Simple Probabilistic Liquefaction Hazard Analysis Program: HAZ45PL Module

Chou

Hsieh²,

Pan³

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

The 2016 Meinong Earthquake hit southern Taiwan and many shallow foundation structures were damaged due to soil liquefaction. In response, the government initiated an investigation project to construct liquefaction potential maps for metropolitans in Taiwan. These maps were used for the preliminary safety assessment of infrastructures or buildings. However, the constructed liquefaction potential map used the pseudo-probabilistic approach, which has inconsistent return period. To solve the inconsistency, the probabilistic liquefaction hazard analysis (PLHA) was introduced. However, due to its complicated calculation procedure, PLHA is not easy and convenient for engineers to use without a specialized program, such as in Taiwan. Therefore, PLHA is not a popular liquefaction evaluation procedure in practice. This study presents a simple PLHA program, HAZ45PL Module, customized for Taiwan. Sites in Tainan City and Yuanlin City are evaluated using the HAZ45PL Module to obtain the hazard curve and to construct the liquefaction probability map. The liquefaction probability map provides probabilities of different liquefaction potential levels for engineers or owners to assess the performance of an infrastructure or to design a mitigation plan.

show abstract

Applicability of Pseudoprobabilistic Method of Liquefaction Hazard Assessment for Nuclear Power Plants at Diffuse Seismicity Sites

Cited by 5 publications

References 12 publications

Characterization and Liquefaction Hazard Assessment of Two Hungarian Liquefied Sites from the 1956 Dunaharaszti Earthquake

Characterization and Liquefaction Hazard Assessment of Two Hungarian Liquefied Sites from the 1956 Dunaharaszti Earthquake

Safety of Nuclear Power Plants with Respect to the Fault Displacement Hazard

Introduction and Application of a Simple Probabilistic Liquefaction Hazard Analysis Program: HAZ45PL Module

Contact Info

Product

Resources

About