Evaluating the risk of water distribution system failure: A shared frailty model
Evaluating the risk of water distribution system failure: A shared frailty model
Robert M. Clark1(), Robert C. Thurnau2
1. Environmental Engineering and Public Health Consultant, 9627 Lansford Drive, Cincinnati OH 45242, USA; 2. Project Manager and Principal Investigator, Eastern Research Group, Cincinnati OH 45242, USA
Condition assessment (CA) Modeling is drawing increasing interest as a technique that can assist in managing drinking water infrastructure. This paper develops a model based on the application of a Cox proportional hazard (PH)/shared frailty model and applies it to evaluating the risk of failure in drinking water networks using data from the Laramie Water Utility (located in Laramie, Wyoming, USA). Using the risk model a cost/benefit analysis incorporating the inspection value method (IVM), is used to assist in making improved repair, replacement and rehabilitation decisions for selected drinking water distribution system pipes. A separate model is developed to predict failures in prestressed concrete cylinder pipe (PCCP). Various currently available inspection technologies are presented and discussed.
Corresponding Author(s):
Clark Robert M.,Email:rmclark@fuse.net
引用本文:
. Evaluating the risk of water distribution system failure: A shared frailty model[J]. Frontiers of Earth Science, 2011, 5(4): 400-405.
Robert M. Clark, Robert C. Thurnau. Evaluating the risk of water distribution system failure: A shared frailty model. Front Earth Sci, 2011, 5(4): 400-405.
Off the shelf, testEx, Russell technologies/Hydroscope
Steel, cast iron and ductile iron
Remote field transformer coupling
Pressure pipe inspection Co (PPIC)
PCCP
Sahara leak detection
PPIC, pure technologies
PPCP
Transient pressure monitoring
Pipetech international
All
Ultrasonic
NCD corp
PCCP, asbestos cement
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