receipt control processing, inventory count procedures, and stock record maintenance. INVENTORY MANAGEMENT SEGMENTS The AK basically deals with material inventories consisting of consumables and repairable. 1. Consumables refer to administrative and housekeeping items, tools, forms, repair parts, and other materials consumed by end users. 2. Repairable refer to components, assemblies, subassemblies, and modules determined by the Navy manager as economically repairable when it becomes unserviceable. Repair parts and consumable segments consist of peacetime operating stock (POS) and non-POS allowance list items, nonallowance POS items, and material scheduled for off-load. Repairable are stock items that, if returned to service through repair cycles, can achieve inventory savings. Some repairable management programs are covered in other chapters of this training manual (TRAMAN). Allowance List Non-POS Items Allowance list non-POS items are items carried in stock based on allowance quantities established in the consolidated shipboard allowance list (COSAL), aviation consolidated allowance list (AVCAL), or load list. Allowance List POS Items Allowance list POS items are items carried in stock based on quantities established in the COSAL, AVCAL, or load list plus additional quantities as determined by demand and frequency recorded in the stock records. Non allowance POS Items Nonallowance POS items are items carried in stock based on the activity’s demand requirements, but not included on any allowance list. Material Scheduled for Off-Load Material scheduled for off-load are items in stock but no longer required because of a reduction in allowance quantities or classified as excess material. OBJECTIVES The following are some of the basic objectives of inventory control procedures afloat: . Focus attention on very few items that will satisfy the majority of the onboard demands for material . Maintain an accurate consumption data required for the 3-M systems program and for maintaining adequate supply levels . Maintain a historical demand data file for not carried (NC) items . Reduce physical inventory requirements and prescribe standard inventory procedures l Provide for effective management of controlled equipage, depot level repairable (DLRs), and presentation silver STOCK LEVELS The policy for stock material that managing the range and depth of each ship is required to carry for self-support is describe din OPNAVINST 4441 .12. The average endurance levels of demand based repair parts and equipment related consumables to be carried by an aircraft carrier is 75 days. For nonequipment related, the average endurance level is 60 days. Stock records are grouped as either POS or non-POS for the purposes of levels computation (demand history processing). Stock levels for non-POS records are established with the requisitioning objective (RO) set equal to the various allowance quantities. The reorder point (RP) is set to one less than the RO, or to a percentage factor of the RO. Note: The RO is the same as the high limit and the RP is the same as the low limit. For POS material stock records, the RO and I/Pare computed by SUADPS-RT programs. The RP is equal to the order and shipping level, plus the safety level. The RO is equal to the RP quantity plus the operating level quantity. SPECIAL MATERIAL MANAGEMENT PROGRAMS Some of the special material management programs related to inventory management are discussed briefly in the following paragraphs. 5-14