Seismic Evaluation Method for Fault Sealing：a Case of Yingdong in Qaidam Basin

2019 ◽  
Author(s):  
Y. Gao
Keyword(s):  
Evaluation Method ◽  
Qaidam Basin ◽  
Seismic Evaluation

334 Study on seismic evaluation method for elbow pipe with local wall thinning

2007 ◽  
Vol 2007 (0) ◽  
pp. 218-219
Author(s):  
Takumi HARA ◽  
Hijiri TUNOI ◽  
Hajime TAKADA ◽  
Akira MIKAMI
Keyword(s):  
Evaluation Method ◽  
Seismic Evaluation ◽  
Wall Thinning ◽  
Local Wall Thinning

Using Limit Analysis for Seismic Evaluation of Component Located in Nuclear Power Plants

2002 ◽  
Author(s):  
Petr Zeman
Keyword(s):  
Limit Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Evaluation Method ◽  
Static Load ◽  
Seismic Load ◽  
Plastic Behavior ◽  
Seismic Evaluation ◽  
Perfectly Plastic ◽  
American Society

Using limit analysis for evaluation of the seismic resistance of the components located in NPPs is compared with the standard evaluation method. This comparison is based on the procedure specified in American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section III. Subsection NC, version 1992 standard. The limit analysis uses perfectly plastic behavior of the material. The seismic load is restricted when using limit analysis to the pseudo-static load. The possibility of building of more realistic non-linear model including contacts is another advantage of limit analysis. Using limit analysis is the way to move the evaluation method closer to the real collapse load and to reduce conservatism.

Applicability of Seismic Fatigue Evaluation by JSME Code Case, NC-CC-008

2019 ◽  
Author(s):  
Akihito Otani ◽  
Izumi Nakamura ◽  
Tomoyoshi Watakabe ◽  
Masaki Morishita ◽  
Tadahiro Shibutani ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Evaluation Methodology ◽  
Response Analysis ◽  
Analysis Method ◽  
Seismic Evaluation ◽  
Fatigue Evaluation ◽  
Conservative Result ◽  
Current Rule

Abstract A Code Case, JSME S NC1, NC-CC-008, in the framework of JSME Nuclear Codes and Standards has been published. New seismic evaluation methodology for piping by utilizing advanced elastic-plastic response analysis method and strain-based fatigue criteria has been incorporated into the code case. It can achieve more rational seismic design than the current rule. This paper demonstrates validity and applicability of fatigue evaluation method proposed in the code case. Experimental results of a shaking table test for a piping model is used for comparing the evaluation by the current rule with one by the code case. As a result, it is confirmed that the code case can provide a rational and conservative result in the fatigue evaluation of piping. Moreover, cycle counting in the fatigue evaluation was examined for further progress of the code case.

Comprehensive Evaluation of Gas Zone in Multi-Layer Sandstone Gas Reservoir

2014 ◽  
Vol 1056 ◽  
pp. 80-83 ◽  
Author(s):  
Cheng Hua Ou ◽  
Chao Chun Li ◽  
Jian He
Keyword(s):  
Analytical Hierarchy Process ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Qaidam Basin ◽  
Production Capacity ◽  
Gas Reservoir ◽  
Comprehensive Evaluation Method ◽  
Hierarchy Process ◽  
Field Production

This work, in view of the features of strong gas zone heterogeneity in Multi-Layer Sandstone Gas Reservoir (MLSGR), develops a methodology on Comprehensive Evaluation of Gas Zone (CEGZ). By using of the methodology, three grade gas zone classified score bounds were transformed from three grade field production capacity classified criteria by utilizing multi-factor comprehensive evaluation method in terms of analytical hierarchy process and comprehensive scores, and CEGZ of 13236 well-layers in Sebei MLSGR, Qaidam basin were fulfilled successfully, which lays the geologic foundations for subsequent balanced and fine exploitation of Sebei MLSGR, and validates the applicability and reliability of this methodology synchronously.

scholarly journals Seismic Evaluation Method of UHV Transformers for Soil-structure Interaction

2021 ◽  
Vol 791 (1) ◽  
pp. 012044
Author(s):  
Zhubing Zhu ◽  
Yongfeng Cheng ◽  
Zhicheng Lu ◽  
Haibo Wang ◽  
Yaodong Xue ◽  
...  
Keyword(s):  
Soil Structure ◽  
Evaluation Method ◽  
Soil Structure Interaction ◽  
Seismic Evaluation ◽  
Structure Interaction

Seismic Evaluation of Systems and Components

1991 ◽  
Vol 113 (2) ◽  
pp. 273-283 ◽  
Author(s):  
C.-W. Lin
Keyword(s):  
Evaluation Method ◽  
Seismic Analysis ◽  
Evaluation Process ◽  
Operating Conditions ◽  
Seismic Evaluation ◽  
Design Concepts ◽  
Methods Of Evaluation ◽  
History Of ◽  
Tremendous Amount ◽  
Evaluation Techniques

Analysis of systems and components for seismic loads has been under continuous development during the last decade. Unlike the early stages of development where the emphasis was on conservatism, the past decade has seen tremendous amount of growth in improved evaluation techniques, more realistic criteria, and better understanding in the dynamic behavior of systems and components under earthquake loads. Accuracy of the evaluation method and the effect of over conservatism on the reliability of the design during operating conditions have become the focus of attention. This has sparked renewed interest in revising many basic assumptions made in the early history of seismic analysis. This revision has also led to many new methods of evaluation and new design concepts. In this paper, developments in seismic evaluation during the last decade are reviewed. The objective is to provide a self-contained overview of the techniques, criteria, and procedures that have contributed to the state of the art development in the entire evaluation process leading to the design acceptability of systems and components.

Seismic Evaluation Method for Piping Systems With Local Wall Thinning Caused by LDI

2014 ◽  
Author(s):  
Michiya Sakai ◽  
Ryo Morita ◽  
Shinichi Matsuura ◽  
Fumio Inada ◽  
Shigenobu Onishi ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Liquid Droplet ◽  
Seismic Load ◽  
Seismic Evaluation ◽  
Loading Test ◽  
Pipe Model ◽  
Wall Thinning ◽  
Piping Systems ◽  
Static Loading Test ◽  
Local Wall Thinning

The earthquake-proof safety of piping systems with local wall thinning due to liquid droplet impingement erosion (LDI) was evaluated using a hybrid experiment which has been incorporated a numerical analysis of the whole system with a static loading test of elbow pipe model. Seismic performance effects of wall thinned elbow were clarified by comparing three cases of different thickness elbow models such as no defect, 50% defect and 75% defect. No damage was observed for in-plane and out-of-plane bending of elbows in the 75% condition under a seismic load equal to five times the design basis earthquake required to reach allowable stress level. In addition, torsion buckling occurred and through wall crack penetrated by cyclic loading under eight times large amplitude the above mentioned seismic motion.

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