Full Content is available to subscribers

Subscribe/Learn More  >

A Review of the Initiating Event Fault Tree Development and Usage at the ENS Sites

[+] Author Affiliations
Fatma Yilmaz, Loys Bedell

Entergy Nuclear South, Jackson, MS

Paper No. ICONE14-89636, pp. 227-232; 6 pages
  • 14th International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance and Life Cycle; Component Reliability and Materials Issues; Codes, Standards, Licensing and Regulatory Issues; Fuel Cycle and High Level Waste Management
  • Miami, Florida, USA, July 17–20, 2006
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4242-8 | eISBN: 0-7918-3783-1
  • Copyright © 2006 by ASME


This paper provides an overview of the experience in developing and using the initiating event fault trees (IEFTs) in the base and EOOS Probabilistic Safety Assessment (PSA) models at the Entergy Nuclear South (ENS) sites. Simple fault tree models can be developed and linked to the master fault tree in order to provide a better estimate of plant-specific initiating event frequencies. If developed considering certain aspects, there can be significant advantages to using IEFT methodology for some initiators, especially in the plant EOOS models. The most important advantage is to have EOOS re-calculate and use such initiating event frequencies for different alignments taking the components that are out of service into consideration while keeping the quantification time and complexity of the cutsets at an acceptable level. The important steps for developing the IEFTs, some insights gained through the experience at the ENS sites, and the advantages of using IEFTs will be discussed in this paper.

Copyright © 2006 by ASME



Interactive Graphics


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

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