PREOVERHAUL TEST AND INSPECTION

ship to operate all its information processing systems according to prescribed procedures. Because of its cost, this survey is usually completed on only one ship of a class. The second inspection is the Visual TEMPEST Configuration Control Inspection (VTCCI), which is conducted independently or concurrently with the instrumented TEMPEST survey, to determine whether or not the shipboard secure electrical information processing systems are installed properly. Any change, however minor, within the secure electrical processing center, whether by forces afloat or the normal installation activity, must be made and inspected according to current criteria outlined in MIL-STD-1680. PREOVERHAUL TEST AND INSPECTION (POT&I) Preoverhaul inspections are held approximately 10 to 12 months before an overhaul. These inspections cover work on combat system items to be done during the upcoming overhaul. A preoverhaul inspection provides information used in developing plans for overhaul of the ship. Personnel performing this inspection are normally from the ship's home yard. Personnel from SPAWAR or NAVSEA may also perform part of the inspection. POSTOVERHAUL INSPECTION The purpose of the pxtoverhaul inspection is to furnish the commanding officer of the ship a report on the condition, capabilities, and limitations of the shipboard equipment and systems. This inspection includes new installations of equipment and systems, and the equipment or systems that were included in the overhaul job orders. MAINTENANCE PERIODS, OVERHAULS, AND ALTERATIONS Maintenance periods (also called availabilities) and overhauls are scheduled at various times according to the needs of the ship, the fleet, the type of ship, and the available funds. Regular overhauls are normally scheduled about every 60 months. Doing the required heavy maintenance and overhauls that cannot be tended to while the ship is underway usually takes 2 to 6 months. During this time, many new electronics installations and equipment or system overhauls can be done with the assistance of yard, tender, or civilian contract personnel. FLEET MODERNIZATION PROGRAM (FMP) The fleet modernization program is a major effort to ensure that ships of the fleet are as ready as possible to meet operational requirements. Each year the Navy re-evaluates its missions and the threat faced by its forces. Analysis of these factors leads to a new statement of required operational capability (ROC) in the new projected operational environment (POE) for each class of ships. The new ROC and POE are then used as the basis for determining the characteristics required in new ships to be built and the requirements for modifying and modernizing existing ships. Attaining the required operational capabilities to enable every ship to best carry out its assigned missions is the primary goal that drives the fleet modernization program (FMP). Other major supporting goals served by the FMP include increasing fleet readiness by improving safety, repair, habitability, reliability, and maintainability; and accomplishing the highest priority alterations in the most timely manner. The FMP needs are reviewed and updated annually by both the CNO and TYCOM. This forms the approved class improvement plan for each ship class. AVAILABILITIES An availability is an assignment of a ship to a repair facility for repairs beyond the capability of the ship’s force. Besides regular overhaul, several types of availabilities are assigned, according to the needs of the individual ship or the fleet. Restricted Availability (RAV) A restricted availability (RAV) is normally assigned for emergency repairs of problems with prime systems that prevent the ship from fulfilling its mission. When emergency repairs to primary systems cannot be made by ship’s force, the commanding officer can request the type commander to assign a restricted availability for the repair of these specific systems. During a restricted availability, the ship is rendered incapable of performing its mission. Technical Availability (TAV) A technical availability (TAV) is used when repairs on noncritical systems or equipment must be made by a repair facility or yard. These repairs do not affect the ability of the^-ship to complete its mission. If necessary, 2-20