0
Research Papers

Risk Analysis of Reactor Pressure Vessels Considering Modeling-Induced Uncertainties

[+] Author and Article Information
Matthew E. Riley

Department of Mechanical Engineering,
University of Idaho,
875 Perimeter Dr.,
MS 0902,
Moscow, ID 83844-0902
e-mail: riley@uidaho.edu

William M. Hoffman

Department of Mechanical Engineering,
University of Idaho,
875 Perimeter Dr.,
MS 0902,
Moscow, ID 83844-0902
e-mail: hoff4746@vandals.uidaho.edu

Manuscript received October 13, 2015; final manuscript received December 8, 2016; published online January 12, 2017. Editor: Ashley F. Emery.

J. Verif. Valid. Uncert 1(4), 041005 (Jan 12, 2017) (10 pages) Paper No: VVUQ-15-1046; doi: 10.1115/1.4035444 History: Received October 13, 2015; Revised December 08, 2016

Uncertainties in simulation models arise not only from the parameters that are used within the model, but also due to the modeling process itself—specifically the identification of a model that most accurately predicts the true physical response of interest. In risk-analysis studies, it is critical to consider the effect that all forms of uncertainty have on the overall level of uncertainty. This work develops an approach to quantify the effect of both parametric and model-form uncertainties. The developed approach is demonstrated on the assessment of the fatigue-based risk associated with a reactor pressure vessel subjected to a thermal shock event.

FIGURES IN THIS ARTICLE
<>
Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Surface-breaking elliptical crack [9]

Grahic Jump Location
Fig. 2

Sample basic belief assignment on crack length

Grahic Jump Location
Fig. 4

Basic belief assignment on crack length a

Grahic Jump Location
Fig. 5

CPF and CBF plots for four cases at t = 64 min

Grahic Jump Location
Fig. 6

Upper and lower bounds of belief for four cases

Grahic Jump Location
Fig. 7

Horsetail plot of CBF and CPF functions for case 4

Grahic Jump Location
Fig. 8

Upper and lower bounds of belief for case 4 of mixed problem

Tables

Errata

Discussions

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 Journal Articles
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