Accession Number:

ADA193788

Title:

Improved Operational Readiness through Environmental Stress Screening

Descriptive Note:

Final technical rept. Sep 1985-May 1987

Corporate Author:

GRUMMAN CORP BETHPAGE NY RELIABILITY MAINTAINABILITY AND SAFETY SECTION

Personal Author(s):

• Pellicione, Victor H.
• Popolo, Joseph

Report Date:

1987-11-01

Pagination or Media Count:

164.0

Abstract:

The objective of this study was to develop guidelines for the application of Environmental Stress Screening ESS to field inventory hardware. Methods were developed for the selection of equipments for ESS application which offer significant potential for operational readiness improvement and life cycle cost reduction. A 21 reduction in field removalmaintenance action rates was found for hardware subjected to ESS when compared against identical hardware not subjected to ESS. A large percentage of the improvement in the ESS hardware was found to be traceable to reductions in Cannot Duplicate CND and Retest OK RTOK rates. LRUs identified by serial number, which demonstrate recurring removal histories much higher than population norms, were found to make excellent candidates for ESS. Tradeoffs between screening implementation costs facilities, repair and downstream logistics support savings, over the remaining product life, were also found to be critical to the ESS candidate selection process. Recommended random vibration and temperature cycling screening regimens are also included in the guidelines.

Descriptors:

• *OPERATIONAL READINESS
• *RELIABILITY
• STRESSES
• VIBRATION
• LOGISTICS SUPPORT
• ENVIRONMENTS
• REDUCTION
• REPAIR
• LIFE CYCLE COSTS
• INVENTORY
• TRADE OFF ANALYSIS
• SAVINGS
• SELECTION
• THERMAL CYCLING TESTS
• TRACER STUDIES

Subject Categories:

• Statistics and Probability
• Operations Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE