10.4122/1.1000001250
Duncan, H.
H.
Duncan
Arthur, S.
S.
Arthur
The development of a methodology to manage the proactive maintenance of sewerage assets within the context of serviceability
DTU Library, Technical University of Denmark (DTU)
2005
Conference full text
FMECA
Sewerage asset management
Flooding
Blockage
Heriot-Watt University, School Of The Built Environment
School Of The Built Environment
Heriot-Watt University
2005
en
10.4122/1.1000001249
application/pdf
In sewerage asset management, there has been a concerted move away from primarily assessing system capacity, to focus on \342\200\234serviceability\342\200\235 as a key performance indicator. In the UK, water regulators recognise that the prime concern of customers is avoiding flooding of their property, as environmental improvements can often be intangible. However, regulators insist that environmental factors are also given attention. Based on these considerations, it is evident that sewerage providers will increasingly consider undertaking proactive maintenance on sub-critical and non-critical assets in order to reduce the risk of reduced levels of serviceability to customers. This paper documents the development of \342\200\234Failure Mode Effect and Criticality Analysis\342\200\235 (FMECA) as a tool to manage capital maintenance expenditure within the context of \342\200\234serviceability\342\200\235 to customers, the public and the environment. The FMECA model has been applied alongside Infoworks-CS to determine critical points in a small Edinburgh (UK) coastal catchment. It also discusses how these results are linked to customer complaints held in a GIS database and how the FMECA approach was able to recommend which assets should be proactively maintained to minimise the risk of serviceability loss. For the catchment considered, key serviceability performance indicators were found to be CSO spills, flooding in residential areas, flooding in commercial zones and disruption to traffic