INTEGRATED MAINTENANCE

reports are produced periodically for ships, repair activities, unit commanders, and type commanders. These automated reports include current ship’s main- tenance project files, work requests, and preinspection and survey deficiency listings. INTEGRATED MAINTENANCE Combat systems maintenance is based on a con- cept of performing a comprehensive schedule of tests at three mutually supporting levels: (1) combat sys- tems, (2) subsystems, and (3) equipment. These integrated tests are structured to challenge all combat systems fictions, parameters, and characteristics on a scheduled periodicity against specified tolerances. Successful performance of the tests as scheduled should provide a high level of confidence in the func- tional operability of the combat systems equipment. Integrated maintenance requirements are estab- lished through engineering analysis based on the study of all factors having a significant effect on maintenance. The analysis defines system and equip- ment functions and establishes tolerances in terms of system parameters for determining acceptable system operations. The integrated maintenance procedures are intended to provide minimum preventive maintenance coverage of combat systems. The procedures are writ- ten to establish specific controlled conditions that challenge the fictions under test. In some cases, test efficiency and format restrictions make it difficult to determine the intent of a test from its procedural steps; therefore, the procedural sequences must be followed explicitly. Improvising or shortcutting pro- cedural sequences often leads to incorrect trouble- shooting or masking of actual faults. The integrated maintenance concept is consistent with the PMS efforts, and it is the most effective means of achieving the goals of the PMS. Adhering to this concept enables maintenance managers to manage the combat systems maintenance effort and to achieve an optimum level of readiness with the most effective use of available personnel. With combat systems testing being conducted at three levels, it is imperative that integrated main- tenance tests be scheduled to reduce test redundancy whenever possible. The three levels of tests are com- bat systems testing, subsystems testing, and equip- ment testing. Combat Systems Testing Combat systems testing, defined as testing that exercises a combat system as one entity, is the highest level of testing that can be accomplished aboard ship. Combat systems tests are usually automated and are conducted and monitored from the ship’s command and control center. The overall combat system operability test (OCSOT) is the primary combat systems test tool. The OCSOT gives a good overview of detection, dis- play and tracking, designation, acquisition, repeat- back position, and some status-signal monitoring. Simulated targets are used in the OCSOT. Although the test is conducted as if the combat systems were operating normally, certain operating stations dedi- cated to support the test are lost for normal opera- tional use. Although the OCSOT provides an overview of systems performance, it does not test the fill capacity of a combat system or its subsystems operability. It is impractical from an instrumentation and manpower standpoint to test all functional test requirements at the combat systems level. Therefore, confidence in operability or material readiness is mainly dependent on integrated testing at the subsystem and equipment levels. Subsystems Testing Testing that exercises two or more pieces of equipment fictionally contained within the same subsystem is defined as subsystems testing. Subsys- tems testing tests a subsystem in a stand-alone opera- tion; however, some functions are provided by other subsystems, which require integrated testing. 1-5