Accession Number:

ADA582967

Title:

Improved Reliability Models for Mechanical and Electrical Components at Navigation Lock and Dam and Flood Risk Management Facilities

Descriptive Note:

Final rept.

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB

Report Date:

2013-04-01

Pagination or Media Count:

114.0

Abstract:

This work developed the use of Expert-Opinion Elicitation EOE to help estimate the characteristic life CL of mechanical and electrical ME components at US Army Corps of Engineers USACE navigation projects. This effort developed improved reliability models for the ME components at the USACE navigation facilities. Current USACE ME reliability methods use generic component failure rate data from US Department of Defense DoD Military Standard MIL-STD 756B, in which failure rate data is processed for components that function in operating environments, failure modes, and maintenance practices different from those at USACE navigation and flood risk management projects. The reliability of the ME system from this data set yields very conservative results, very often overestimating the time-dependent reliability of the entire ME system. EOE will be used to define the CL for a list of critical ME components at USACE navigation and flood risk management projects. These elicited values for CL will form the basis for failure rates to be used with the existing methods for ME system reliability calculations. Additional work on fault trees for ME systems is being completed as part of dam safety and levee risk assessment procedures development.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE