CHAPTER 5
TRIDENT SYSTEM AND EQUIPMENT MAINTENANCE PLANS
5.1 PURPOSE. To provide information and guidance concerning TRIDENT submarine system and equipment maintenance plans and associated programs.
5.2 TRIDENT SYSTEM AND EQUIPMENT MAINTENANCE PLANS. Maintenance plans have been prepared for all maintenance worthy configuration items onboard SSBN 726 Class Submarines. These maintenance plans are written to the system, equipment and/or component and list all of the planned maintenance required by a configuration item during its life cycle. These MRs are derived through the conduct of a maintenance engineering and a logistics support analysis process. Maintenance plans list the job description, periodicity, maintenance level (organization, intermediate, or industrial) and the applicable maintenance procedures. URO, TRIDENT Planned Equipment Replacement (TRIPER), Major Shore Spares (MSS), MRPs and Performance Monitoring applications are included in maintenance plans as appropriate. Technical management of these plans is assigned to the Submarine Maintenance Engineering, Planning and Procurement (SUBMEPP) activity. An SSBN 726 Class Submarine Maintenance Plan comprising all individual maintenance plans is issued periodically by NAVSEA. Programs and requirements supporting the SSBN 726 Class operating cycle are discussed in the following paragraphs.
5.2.1 TRIDENT Planned Equipment Replacement. The purpose of the TRIPER program is to accomplish an incremental overhaul of a submarine over several refit periods. Shipboard equipment which requires significant maintenance during the planned operating cycle between overhauls, which is beyond the capability of Ship's Force, and which cannot be accomplished during the refit period (without unacceptable impact on other refit requirements), will be supported by this program. TRIPER equipment will be removed from the ship for refurbishment ashore, replaced with pre-tested, ready for issue units and the affected system restored to full operational condition prior to completion of the refit period. Replacement will be accomplished on a planned basis at intervals designed to preclude the failure of the equipment or significant degradation of its associated system. Deviations of greater or less than one refit from established TRIPER change-out periodicities shall require TYCOM concurrence. A planned change to shelf stock TRIPER equipment will be accomplished only when sufficient change kits are available to effect the change in all units of a given model of the equipment held in shelf stock. Shelf stock TRIPER equipment is represented in configuration status accounting databases maintained by SUBMEPP Hull, Mechanical, Electrical, Ordnance and Electronic and Naval Underwater Warfare Center Division Newport and transitions to the configuration database of the receiving ship upon installation.
5.2.2 Major Shore Spares. The purpose of the TRIDENT MSS Program is to maintain a supply of designated major equipment candidates in a certified, tested, ready-for-issue condition to effect replacement of equipment experiencing catastrophic failure, without jeopardizing refit completion. The employment of MSS assets shall require TYCOM authorization. Typically, MSS equipments include ship's propeller, Ship's Service Turbine Generators, towed arrays, towed buoys, Integrated Radio Room cabinets, etc. Like TRIPER, MSS equipment is managed by NAVSEA (PMS 396L). Configuration tracking is under the cognizance of the applicable Participating Manager and is identified in the TRIDENT MSS Catalog published by NAVSEA (PMS 396L). Equipment under the cognizance of the Strategic System Project Office and Naval Sea Systems Command (NAVSEA) Nuclear Propulsion Directorate (08) (NAVSEA 08) is not included in the TRIPER or MSS programs.
5.2.3 Fleet Logistics Agent. The function of the fleet logistics agent for SSBN 726 Class Submarines has been assigned to the TRIDENT Refit Facility (TRIREFFAC). TRIREFFAC provides refit and configuration management support. These functions involve:
a. Staging and delivering updated Logistics Technical Data (LTD) applicable to the ship's current configuration.
b. Providing available interim technical documentation and logistic support elements for emergent changes installed during refit.
c. Assessing the logistic impact and reporting of, configuration changes effected by all sources in SSBN 726 Class Submarines.
5.2.4 Updating of Submarine Logistics Technical Data. TRIREFFAC will stage and deliver LTD Advance Change Notices (ACN) and revisions to SSBN 726 Class Submarines during refit and shall assist Ship's Force in the removal and disposal of LTD that is no longer applicable to the ship's current configuration. Upon request, TRIREFFAC will also provide training to Ship's Force in the proper techniques for identification, procurement and maintenance of TRIDENT LTD.
5.2.5 Planned Refit Work Lists. Planned Refit Work Lists (PRWL) define all the planned work required for each SSBN 726 Class ship for a one year period or four refits. The PRWL includes scheduled TRIPER replacements, URO and Performance Monitoring requirements. In addition, alterations approved for accomplishment will be incorporated into the PRWL. The PRWL will be issued periodically, each for a one year period. Subsequent PRWLs will include rescheduling of requirements identified on previous work lists which were not reported complete. Each PRWL will allocate specific work items to a proposed refit based on the Class Maintenance Plan (CMP) scheduled requirements and projected manpower requirements.