Translation of pipe inspection results into condition rating using fuzzy synthetic valuation technique

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TypeArticle
Journal titleJournal of Water Supply Research and Technology: Aqua
Volume55
IssueFebruary 1
Pages1124; # of pages: 14
Subjectdistress indicator, fuzzy condition ratings, large-diameter transmission mains; Pipes and pipelines
AbstractAn important step towards the assessment and management of failure risk in large-diameter (transmission) water mains is to observe distress indicators through scheduled inspections (using non-destructive or visual techniques) and translate these into condition ratings. Condition rating reflects an aggregate state of the pipe's health.Distress indicators are physical manifestations of the ageing process. The type (or form) and location of observed distress indicators in large-diameter mains are dependent on the pipe material and its surrounding environment. The physicochemical processes that promote ageing are often not understood well enough to merit an adequate physicochemical (based on mechanics or electrochemistry or microbiology) model. Further, the encoding of distress indicators into condition rating is inherently imprecise and involves subjective judgment. Fuzzy logic-based tools enable the use of engineering judgment, experience and scarce field data to translate the level of distress to condition ratings.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number48317
17665
NPARC number20378050
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Record identifier27340c82-be1b-421b-9c2b-f0281e50569b
Record created2012-07-24
Record modified2016-05-09
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