Accession Number : AD0909532

Title :   Rebuild versus Repair, A Logistics Analysis.

Descriptive Note : Final rept.,

Corporate Author : AEROSPACE GUIDANCE AND METROLOGY CENTER NEWARK AFS OH

Personal Author(s) : Genet, Russell M. ; Handley, R. Patrick

Report Date : 03 AUG 1971

Pagination or Media Count : 46

Abstract : This paper examines the economic, and other pertinent logistic factors of a maintenance concept that 'always rebuilds units completely' (ARUC), versus one that 'diagnoses and repairs as necessary' (DARAN). The examination of these two maintenance approaches is made by constructing a mathematical cost model, and then exercising this model under a large number of widely varing conditions. For this model, it was found that under most of the conditions examined, that the 'diagnose and repair as necessary' (DARAN) maintenance concept was preferable to a concept of 'always rebuild units completely' (ARUC). For systems with more than two subsystems examined in this study, this is even more likely to be always true. The paper then explains why the 'Diagnose and repair as necessary' (DARAN) approach to maintenance, even though it is usually the most effective approach, is not used more often and more fully. The reasons explained primarily involve the over influcence of designer/producer viewpoints and approaches of those that specialize in maintenance, particularly those specializing in 'diagnose and repair as necessary' (DARAN) approach. (Author)

Descriptors :   *GYROSCOPES, *LOGISTICS, *MANAGEMENT PLANNING AND CONTROL, *SPARE PARTS, MAINTENANCE, MATHEMATICAL MODELS, REPLACEMENT THEORY, OBSOLESCENCE THEORY, COSTS, FLOW CHARTING, INVENTORY CONTROL, COMPUTER PROGRAMS, INPUT OUTPUT DEVICES, DATA PROCESSING, ECONOMICS, FAILURE, COST EFFECTIVENESS, INERTIAL NAVIGATION.

Subject Categories : Logistics, Military Facilities and Supplies
      Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE