0

Full Content is available to subscribers

Subscribe/Learn More  >

KI Evaluation Method on Crack Growth of Bottom Mounted Instrumentation Penetrations in a Reactor Pressure Vessel

[+] Author Affiliations
Masayuki Mukai

Mitsubishi Heavy Industries, Ltd., Hyogo-ku, Kobe, Japan

Tetsuo Yamashita

Mitsubishi Heavy Industries, Ltd., Takasago, Hyogo, Japan

Naoki Chigusa, Masashi Kameyama

Kansai Electric Power Company, Inc., Osaka, Japan

Seiji Asada

Mitsubishi Heavy Industries, Ltd., Kobe, Japan

Paper No. PVP2004-2990, pp. 177-186; 10 pages
doi:10.1115/PVP2004-2990
From:
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Elevated Temperature Design and Analysis, Nonlinear Analysis, and Plastic Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4667-9
  • Copyright © 2004 by ASME

abstract

A method to evaluate a Mode I stress intensity factor KI for bottom mounted instrumentation (BMI) penetrations (nozzles) in a reactor pressure vessel (RPV) has been developed in order to perform the crack growth analysis simply and accurately. As regards the KI evaluation method, the several studies has been reported for a simple pipe with inside surface crack [1][2][3]. However, the study on the structure like the BMI nozzle joined with the vessel head by J-welding, has never been reported. Therefore, KI for BMI nozzles should be evaluated considering the load and the displacement by this interaction. The KI is evaluated simply by multiplying three correction factors to the one for a two-dimensional crack in a flat plate. These factors are to correct the flat plate’s KI to pipe’s one, two-dimensional crack shape to three-dimensional one, and to consider bottom head influence by the interaction. As regards a stress distribution in the wall thickness to be used, it is divided into the load control type and the displacement control one because the excessive conservativeness is excluded. Finally, the KI is calculated by superposing the one evaluated for each stress type. The evaluated KI was verified by comparing with the detailed three-dimensional FEA results. A simplified and accurate KI evaluation method for BMI nozzles in a RPV is proposed in this paper.

Copyright © 2004 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In