A failure mode and effect analysis has been carried out for a hydraulic steering system including the electric prime movers and remote control system. This analysis has proved to be an effective tool in evaluating complex systems. The steering system has been broken down into functional blocks and a functional block diagram has been constructed. A brief description is given of the system which comprises two power systems, autopilot follow-up steering and non-follow-up steering. The failure mode and effect analysis has been carried out with one system in operation. The analysis has disclosed weak links or bottlenecks in the system. The effects of single failures when two systems are in operation have been analysed and hidden failures due to redundancy have been identified. Each failure has been classified in one of the following groups; A sub 1-failure causing no loss of primary function, A sub 2-failure causing loss of primary function but detected automatically, and A sub 3-failure causing loss of primary function without being detected automatically. Vital items of the FMEA i.e. detection of failure, failure effects, gradation of failures and possible corrective actions have been discussed. Tests have been proposed in order to verify the results of the findings of the FMEA.

  • Supplemental Notes:
    • Proceedings Fifth Ship Control Systems Symposium, David W. Taylor Naval Ship Research and Development Center, Annapolis, Maryland, October 30-November 3, 1978, Volume 3.
  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Bethesda, MD  United States  20084
  • Authors:
    • Verlo, G
    • Drager
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00187965
  • Record Type: Publication
  • Source Agency: David Taylor Naval Ship R&D Center
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Feb 3 1979 12:00AM