Resilience-based failure mode effects and criticality analysis for regional water supply system

Hwee Hwang, Kevin E Lansey, Daniel R. Quintanar

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

An alternative risk assessment method, known as failure mode effects and criticality analysis (FMECA), is demonstrated on the regional water supply systems (RWSS) in Tucson, AZ, USA that combines delivery of potable and reclaimed water and conveyance of wastewater to a developing area within the Tucson RWSS. The goal of FMECA is to examine the volumetric severity of a component failure on the overall system function by modeling the system under alternative failure modes. Within FMECA, the Risk Priority Number (RPN) is applied to compare the risk criticality between components' failures. To complete FMECA, the Tucson RWSS is represented in a network flow model that optimally allocates flows between sources and demand points to minimize operational costs. Potential failure mode consequences are evaluated from the flow model as the volume of water not delivered to users if the component is unavailable. The volumetric severity of the failure event is converted to an ordinal value using stakeholder judgment. Likelihood of each failure mode is similarly defined by stakeholders on a 1-10 scale. The RPN is then computed as the product of the severity and likelihood. RPN values for all failure modes are then ranked to assess the most critical elements. Alternative system configurations are examined to assess the value of redundancies on the Tucson RWSS resilience.

Original languageEnglish (US)
Pages (from-to)193-210
Number of pages18
JournalJournal of Hydroinformatics
Volume17
Issue number2
DOIs
StatePublished - 2015

Fingerprint

Water supply systems
Failure modes
water supply
stakeholder
assessment method
risk assessment
wastewater
water
analysis
effect
cost
Risk assessment
modeling
Redundancy
Water
Wastewater

Keywords

  • Decentralized wastewater treatment
  • Failure mode effects and criticality analysis (FMECA)
  • Regional water supply system (RWSS)
  • Resilience
  • Risk management
  • Risk priority number (RPN)

ASJC Scopus subject areas

  • Atmospheric Science
  • Geotechnical Engineering and Engineering Geology

Cite this

Resilience-based failure mode effects and criticality analysis for regional water supply system. / Hwang, Hwee; Lansey, Kevin E; Quintanar, Daniel R.

In: Journal of Hydroinformatics, Vol. 17, No. 2, 2015, p. 193-210.

Research output: Contribution to journalArticle

@article{f3b48e030f9f4669b4d28566aa4f7441,
title = "Resilience-based failure mode effects and criticality analysis for regional water supply system",
abstract = "An alternative risk assessment method, known as failure mode effects and criticality analysis (FMECA), is demonstrated on the regional water supply systems (RWSS) in Tucson, AZ, USA that combines delivery of potable and reclaimed water and conveyance of wastewater to a developing area within the Tucson RWSS. The goal of FMECA is to examine the volumetric severity of a component failure on the overall system function by modeling the system under alternative failure modes. Within FMECA, the Risk Priority Number (RPN) is applied to compare the risk criticality between components' failures. To complete FMECA, the Tucson RWSS is represented in a network flow model that optimally allocates flows between sources and demand points to minimize operational costs. Potential failure mode consequences are evaluated from the flow model as the volume of water not delivered to users if the component is unavailable. The volumetric severity of the failure event is converted to an ordinal value using stakeholder judgment. Likelihood of each failure mode is similarly defined by stakeholders on a 1-10 scale. The RPN is then computed as the product of the severity and likelihood. RPN values for all failure modes are then ranked to assess the most critical elements. Alternative system configurations are examined to assess the value of redundancies on the Tucson RWSS resilience.",
keywords = "Decentralized wastewater treatment, Failure mode effects and criticality analysis (FMECA), Regional water supply system (RWSS), Resilience, Risk management, Risk priority number (RPN)",
author = "Hwee Hwang and Lansey, {Kevin E} and Quintanar, {Daniel R.}",
year = "2015",
doi = "10.2166/hydro.2014.111",
language = "English (US)",
volume = "17",
pages = "193--210",
journal = "Journal of Hydroinformatics",
issn = "1464-7141",
publisher = "IWA Publishing",
number = "2",

}

TY - JOUR

T1 - Resilience-based failure mode effects and criticality analysis for regional water supply system

AU - Hwang, Hwee

AU - Lansey, Kevin E

AU - Quintanar, Daniel R.

PY - 2015

Y1 - 2015

N2 - An alternative risk assessment method, known as failure mode effects and criticality analysis (FMECA), is demonstrated on the regional water supply systems (RWSS) in Tucson, AZ, USA that combines delivery of potable and reclaimed water and conveyance of wastewater to a developing area within the Tucson RWSS. The goal of FMECA is to examine the volumetric severity of a component failure on the overall system function by modeling the system under alternative failure modes. Within FMECA, the Risk Priority Number (RPN) is applied to compare the risk criticality between components' failures. To complete FMECA, the Tucson RWSS is represented in a network flow model that optimally allocates flows between sources and demand points to minimize operational costs. Potential failure mode consequences are evaluated from the flow model as the volume of water not delivered to users if the component is unavailable. The volumetric severity of the failure event is converted to an ordinal value using stakeholder judgment. Likelihood of each failure mode is similarly defined by stakeholders on a 1-10 scale. The RPN is then computed as the product of the severity and likelihood. RPN values for all failure modes are then ranked to assess the most critical elements. Alternative system configurations are examined to assess the value of redundancies on the Tucson RWSS resilience.

AB - An alternative risk assessment method, known as failure mode effects and criticality analysis (FMECA), is demonstrated on the regional water supply systems (RWSS) in Tucson, AZ, USA that combines delivery of potable and reclaimed water and conveyance of wastewater to a developing area within the Tucson RWSS. The goal of FMECA is to examine the volumetric severity of a component failure on the overall system function by modeling the system under alternative failure modes. Within FMECA, the Risk Priority Number (RPN) is applied to compare the risk criticality between components' failures. To complete FMECA, the Tucson RWSS is represented in a network flow model that optimally allocates flows between sources and demand points to minimize operational costs. Potential failure mode consequences are evaluated from the flow model as the volume of water not delivered to users if the component is unavailable. The volumetric severity of the failure event is converted to an ordinal value using stakeholder judgment. Likelihood of each failure mode is similarly defined by stakeholders on a 1-10 scale. The RPN is then computed as the product of the severity and likelihood. RPN values for all failure modes are then ranked to assess the most critical elements. Alternative system configurations are examined to assess the value of redundancies on the Tucson RWSS resilience.

KW - Decentralized wastewater treatment

KW - Failure mode effects and criticality analysis (FMECA)

KW - Regional water supply system (RWSS)

KW - Resilience

KW - Risk management

KW - Risk priority number (RPN)

UR - http://www.scopus.com/inward/record.url?scp=84928952467&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928952467&partnerID=8YFLogxK

U2 - 10.2166/hydro.2014.111

DO - 10.2166/hydro.2014.111

M3 - Article

AN - SCOPUS:84928952467

VL - 17

SP - 193

EP - 210

JO - Journal of Hydroinformatics

JF - Journal of Hydroinformatics

SN - 1464-7141

IS - 2

ER -