skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Heartbeat Model for Component Failure in Simulation of Plant Behavior

Abstract

As part of the Department of Energy’s “Light Water Reactor Sustainability Program” (LWRSP), tools and methodology for risk-informed characterization of safety margin are being developed for use in supporting decision-making on plant life extension after the first license renewal. Beginning with the traditional discussion of “margin” in terms of a “load” (a physical challenge to system or component function) and a “capacity” (the capability of that system or component to accommodate the challenge), we are developing the capability to characterize realistic probabilistic load and capacity spectra, reflecting both aleatory and epistemic uncertainty in system behavior. This way of thinking about margin comports with work done in the last 10 years. However, current capabilities to model in this way are limited: it is currently possible, but difficult, to validly simulate enough time histories to support quantification in realistic problems, and the treatment of environmental influences on reliability is relatively artificial in many existing applications. The INL is working on a next-generation safety analysis capability (widely referred to as “R7”) that will enable a much better integration of reliability-related and phenomenology-related aspects of margin. In this paper, we show how to implement cumulative damage (“heartbeat”) models for component reliability that lend themselvesmore » naturally to being included as part of the phenomenology simulation. Implementation of this modeling approach relies on the way in which the phenomenology simulation implements its dynamic time step management. Within this approach, component failures influence the phenomenology, and the phenomenology influences the component failures.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
1017877
Report Number(s):
INL/CON-10-20039
TRN: US1103286
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: PSA 11,Wilmington, NC,03/13/2011,03/17/2011
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; CAPACITY; DECISION MAKING; IMPLEMENTATION; MANAGEMENT; RELIABILITY; SAFETY ANALYSIS; SAFETY MARGINS; SIMULATION; SPECTRA; WATER; cumulative damage; phenomenology; R7; Reliability; Safety Margin

Citation Formats

Youngblood, R W, Nourgaliev, R R, Kelly, D L, Smith, C L, and Dinh, T-N. Heartbeat Model for Component Failure in Simulation of Plant Behavior. United States: N. p., 2011. Web.
Youngblood, R W, Nourgaliev, R R, Kelly, D L, Smith, C L, & Dinh, T-N. Heartbeat Model for Component Failure in Simulation of Plant Behavior. United States.
Youngblood, R W, Nourgaliev, R R, Kelly, D L, Smith, C L, and Dinh, T-N. 2011. "Heartbeat Model for Component Failure in Simulation of Plant Behavior". United States. https://www.osti.gov/servlets/purl/1017877.
@article{osti_1017877,
title = {Heartbeat Model for Component Failure in Simulation of Plant Behavior},
author = {Youngblood, R W and Nourgaliev, R R and Kelly, D L and Smith, C L and Dinh, T-N},
abstractNote = {As part of the Department of Energy’s “Light Water Reactor Sustainability Program” (LWRSP), tools and methodology for risk-informed characterization of safety margin are being developed for use in supporting decision-making on plant life extension after the first license renewal. Beginning with the traditional discussion of “margin” in terms of a “load” (a physical challenge to system or component function) and a “capacity” (the capability of that system or component to accommodate the challenge), we are developing the capability to characterize realistic probabilistic load and capacity spectra, reflecting both aleatory and epistemic uncertainty in system behavior. This way of thinking about margin comports with work done in the last 10 years. However, current capabilities to model in this way are limited: it is currently possible, but difficult, to validly simulate enough time histories to support quantification in realistic problems, and the treatment of environmental influences on reliability is relatively artificial in many existing applications. The INL is working on a next-generation safety analysis capability (widely referred to as “R7”) that will enable a much better integration of reliability-related and phenomenology-related aspects of margin. In this paper, we show how to implement cumulative damage (“heartbeat”) models for component reliability that lend themselves naturally to being included as part of the phenomenology simulation. Implementation of this modeling approach relies on the way in which the phenomenology simulation implements its dynamic time step management. Within this approach, component failures influence the phenomenology, and the phenomenology influences the component failures.},
doi = {},
url = {https://www.osti.gov/biblio/1017877}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 2011},
month = {Tue Mar 01 00:00:00 EST 2011}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: