EQUIPMENT AGE-RELIABILITY ANALYSIS

Age-reliability analysis is the process of discovering the relationship between the age of an item in service and its tendency to fail. The most useful statistic in age-reliability analysis is the conditional probability of failure, i.e. the probability that an item that has attained an age of "X" days will fail within the next "Y" days. The results of an analysis of this type undertaken on 22 types of equipment in two ship classes are reviewed. They indicate that overhaul is of no benefit or of only temporary benefit within the first 5 years of operation for 82 percent of the equipment, and that it is actually harmful for 32 percent. Work is continuing, and it is hoped to be able to identify equipment that should be included in class maintenance plans as fixed-time overhaul items, and, equally important, those items that should not be overhauled unless there is specific evidence of need.

• Supplemental Notes:
  • Naval Engrs J., 96 <1984>, p. 65 <Sept.> (6 pp., 5 ref., 6 fig.)
• Authors:
  • Prichard, J W
• Publication Date: 1984

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00687718
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM