Environmental Fatigue Evaluation for Thermal Stratification Piping of Nuclear Power Plants 


Vol. 33,  No. 5, pp. 164-169, Oct.  2018
10.14346/JKOSOS.2018.33.5.164


PDF
  Abstract

A detailed fatigue evaluation procedure was developed to mitigate the excessive conservativeness of the conventional environmental fatigue evaluation method for the pressurizer spray line elbow of domestic new nuclear power plants. The pressurizer spray line is made of austenitic stainless steel, which is relatively sensitive to the environmentally assisted fatigue, and has a low degree of design margin in terms of environmentally assisted fatigue due to the thermal stratification phenomenon on the pipe cross section as a whole or locally. In this study, to meet the environmental fatigue design requirements of the pressurizer spray line elbow, the new environmental fatigue evaluation has been performed, which used the ASME Code NB-3200-based detailed fatigue analysis and the environmental fatigue correction factor instead of the existing NB-3600 evaluation method. As a result, the design requirements for environmentally assisted fatigue were met in all parts of the pressurizer spray line elbow including the fatigue weakened zones by thermal stratification.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

김태순 and 김규형, "Environmental Fatigue Evaluation for Thermal Stratification Piping of Nuclear Power Plants," Journal of the Korean Society of Safety, vol. 33, no. 5, pp. 164-169, 2018. DOI: 10.14346/JKOSOS.2018.33.5.164.

[ACM Style]

김태순 and 김규형. 2018. Environmental Fatigue Evaluation for Thermal Stratification Piping of Nuclear Power Plants. Journal of the Korean Society of Safety, 33, 5, (2018), 164-169. DOI: 10.14346/JKOSOS.2018.33.5.164.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5