If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Implementation of a Risk-Based Approach to Sanitary Sewer Asset Management

$17.50 plus tax (Refund Policy)

Buy Article:


The West Valley Sanitation District operates and maintains 426 miles of sewers. Based on a previous dry weather monitoring study and subsequent CCTV inspection activities, the District established an extensive list of needed rehabilitation projects spread throughout the service area, yet did not have an objective methodology for prioritization of these projects. The District decided to develop and implement a risk-based prioritization process based on guidelines recommended by the National Association of Clean Water Agencies (NACWA) in the publication “Implementing Asset Management: A Practical Guide”. The analysis focused on quantifying and assessing the risks posed in the case of asset failure or inability of the District's sewers to provide service to customers at a level that is acceptable to the District. Using this approach, consequence of failure and likelihood of failure were quantified to calculate risk of failure for individual sewer assets. The risk scores were then used to prioritize sewer rehabilitation or replacement projects. The District has also found the risk scores to be useful in prioritizing system-wide CCTV inspection for the sewer system. This presentation will review the methodology, approach, and results of the risk-based prioritization model.

Keywords: Prioritization; Risk; Sewer; asset management

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802765516

Publication date: January 1, 2011

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more