When a component, as heat shields, degrade, two stages can be distinguished. First, a potential failure appears, which could evolve to the second stage and become a functional failure. The time between these two stages is called delay-time, which has been widely studied in literature to determine when to inspect to avoid breakdown. These studies have shown only single analysis criteria to find failure finding interval (FFI). In order to overcome this limitation, we developed a novel strategy to apply multicriteria methodology to optimize FFI. Our approach considers availability, system breakdown risk and reliability analysis from a systemic perspective, studying heat shields as groups, according to their location in the combustion chamber, regardless of age defect. Hence, it is not necessary to check every one of the shields. Our results show an optimal FFI policy subject to a determined breakdown risk level. This analysis may be adaptable to other components that can be grouped together.
Issue Section:
Gas Turbines: Structures and Dynamics
References
1.
van Oosterom
, C. D.
, Elwany
, A. H.
, Çelebi
, D.
, and van Houtum
, G. J.
, 2014
, “Optimal Policies for a Delay Time Model With Postponed Replacement
,” Euro. J. Oper. Res.
, 232
(1
), pp. 186
–197
.10.1016/j.ejor.2013.06.0382.
Christer
, A. H.
, Lee
, C.
, and Wang
, W.
, 2000
, “A Data Deficiency Based Parameter Estimating Problem and Case Study in Delay Time PM Modeling
,” Int. J. Prod. Econ.
, 67
(1
), pp. 63
–76
.10.1016/S0925-5273(00)00010-43.
Pillay
, A.
, and Wang
, J.
, 2001
, “A Maintenance Study of Fishing Vessel Equipment Using Delay-Time Analysis
,” J. Qual. Maint. Eng.
, 7
(2
), pp. 118
–127
.10.1108/135525101103974214.
Aven
, T.
, and Castro
, I. T.
, 2009
, “A Delay-Time Model With Safety Constraint
,” Reliab. Eng. Syst. Saf.
, 94
(2
), pp. 261
–267
.10.1016/j.ress.2008.03.0045.
Wang
, W.
, 2012
, “An Overview of the Recent Advances in Delay-Time-Based Maintenance Modelling
,” Reliab. Eng. Syst. Saf.
, 106
, pp. 165
–178
.10.1016/j.ress.2012.04.0046.
Tang
, T.
, Lin
, D.
, Banjevic
, D.
, and Jardine
, A. K.
, 2013
, “Availability of a System Subject to Hidden Failure Inspected at Constant Intervals With Non-negligible Downtime Due to Inspection and Downtime Due to Repair/Replacement
,” J. Stat. Plann. Inference
, 143
(1
), pp. 176
–185
.10.1016/j.jspi.2012.05.0117.
Pascual
, R.
, Louit
, D. M.
, and Jardine
, A. K. S.
, 2011
, “Optimal Inspection Intervals for Safety Systems With Partial Inspections
,” JORS
, 62
(12
), pp. 2051
–2062
.10.1057/jors.2010.1738.
Lee
, C.
, 1999
, “Applications of Delay Time Theory to Maintenance Practice of Complex Plant
,” Ph.D. thesis, University of Salford, Salford, UK.9.
Jardine
, A.
, and Tsang
, A.
, 2005
, Maintenance, Replacement, and Reliability: Theory and Applications
, Dekker Mechanical Engineering, Taylor & Francis
, pp. 49
–97
.10.
Ten Wolde
, M.
, and Ghobbar
, A. A.
, 2013
, “Optimizing Inspection Intervals—Reliability and Availability in Terms of a Cost Model: A Case Study on Railway Carriers
,” Reliab. Eng. Syst. Saf.
, 114
, pp. 137
–147
.10.1016/j.ress.2012.12.01311.
Wang
, W.
, 2011
, “An Inspection Model Based on a Three-Stage Failure Process
,” Reliab. Eng. Syst. Saf.
, 96
(7
), pp. 838
–848
.10.1016/j.ress.2011.03.00312.
Christer
, A.
, 1999
, “Developments in Delay Time Analysis for Modelling Plant Maintenance
,” J. Oper. Res. Soc.
, 50
(11
), pp. 1120
–1137
.10.1057/palgrave.jors.260083713.
Wang
, W.
, and Christer
, A. H.
, 2003
, “Solution Algorithms for a Nonhomogeneous Multi-Component Inspection Model
,” Comput. Oper. Res.
, 30
(1
), pp. 19
–34
.10.1016/S0305-0548(01)00074-014.
Pandey
, M. D.
, Lu
, D.
, and Komljenovic
, D.
, 2011
, “The Impact of Probabilistic Modeling in Life-Cycle Management of Nuclear Piping Systems
,” ASME J. Eng. Gas Turbines Power
, 133
(1
), p. 012901
.10.1115/1.400089715.
Yuan
, X.-X.
, Mao
, D.
, and Pandey
, M. D.
, 2009
, “A Bayesian Approach to Modeling and Predicting Pitting Flaws in Steam Generator Tubes
,” Reliab. Eng. Syst. Saf.
, 94
(11
), pp. 1838
–1847
.10.1016/j.ress.2009.06.00116.
Christer
, A. H.
, and Lee
, C.
, 2000
, “Refining the Delay-Time-Based PM Inspection Model With Non-negligible System Downtime Estimates of the Expected Number of Failures
,” Int. J. Prod. Econ.
, 67
(1
), pp. 77
–85
.10.1016/S0925-5273(00)00011-617.
Wang
, W.
, 2011
, “A Joint Spare Part and Maintenance Inspection Optimisation Model Using the Delay-Time Concept
,” Reliab. Eng. Syst. Saf.
, 96
(11
), pp. 1535
–1541
.10.1016/j.ress.2011.07.00418.
Wang
, W.
, and Christer
, A. H.
, 2003
, “Solution Algorithms for a Nonhomogeneous Multi-Component Inspection Model
,” Comput. Oper. Res.
, 30
(1
), pp. 19
–34
.10.1016/S0305-0548(01)00074-019.
Wang
, W.
, Banjevic
, D.
, and Pecht
, M. G.
, 2010
, “A Multi-Component and Multi-Failure Mode Inspection Model Based on the Delay Time Concept
,” Reliab. Eng. Syst. Saf.
, 95
(8
), pp. 912
–920
.10.1016/j.ress.2010.04.00420.
Blumenthal
, S.
, Greenwood
, J. A.
, and Herbach
, L. H.
, 1984
. “Series Systems and Reliability Demonstration Tests
,” Oper. Res.
, 32
(3
), pp. 641
–648
.10.1287/opre.32.3.64121.
Smeitink
, E.
, and Dekker
, R.
, 1990
, “A Simple Approximation to the Renewal Function [Reliability Theory]
,” Reliab. IEEE Trans.
, 39
(1
), pp. 71
–75
.10.1109/24.5261422.
Todinov
, M.
, 2006
, Risk-Based Reliability Analysis and Generic Principles for Risk Reduction
, Elsevier Science & Technology Books
, Amsterdam, pp. 68
–72
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