material to and from supported activities. Also, this unit is responsible for planning and scheduling deliveries to meet the required time frame. Fragile material and delicate components that require special handling, special padding, or racks should be delivered by the most direct route to reduce the risk of damage. The MDU processes requisitions as follows: Upon receipt of requisitions for carried items from SLU, MDU delivers the requisitions to the storage location. The MDU picks up the material from the storage location and delivers the items to the customer. Upon issue of consumable material, storage personnel detach the original and green copy of the DD Form 1348 (6 pt). Storage personnel put the Julian date and time of issue below block V on the DD Form 1348 (6 pt). The MDU sends copies of the DD Form 1348 (6 pt) to stock control for financial and data processing actions. When MDU delivers a repairable item, it requires an immediate exchange or proof of previous turn-in unless the item is listed in the CRIPL or the requisition contains project code ZA9. Upon delivery of the material, MDU will have the customer sign and put the date and time on the pink and hardback copy of the DD Form 1348(6 pt). The MDU gives the pink copy to the customer and delivers the hardback copy to RCU. If the material issued is a repairable item, MDU will pickup the turn-in item and all associated documents. Documents that may accompany the item include the MAF (or facsimile), service record card, or logbook. The MDU delivers the part and documents to the aeronautical material screening unit (AMSU) via the supply screening unit (SSU). The MDU returns a signed and annotated copy of the MAF (if used) and the original, green, and hardback copies of the DD Form 1348 (6 pt) to DCU. If the turn-in repairable is not available, MDU will have the customer sign the yellow and hardback copies of the DD Form 1348 (6 pt), which are then forwarded to DCU. The MDU will give the pink copy of the DD Form 1348 (6 pt) to the customer. The MDU will receive the original, pink, yellow, and hardback copies of the DD Form 1348 (6 pt) for EXREP or work stoppage requisitions. The MDU will pick up the repairable turn-in item with the associated documents and give the signed yellow copy to the customer as proof of turn-in. The MDU delivers the turn-in item, associated documents, and the original, pink, and hardback copies of the DD Form 1348(6 pt) to SSU. The MDU may sign the local form/log when picking up repairable turn-in items before a requisition is processed by RCU. The MDU delivers the item and associated documents to AMSU, and gives the MAF copy (if used) to DCU. In activities that use the preposting method, MDU may receive the requisitions from stock control or the warehouse. In this case, the DD Form 1348 original and green copies are deleted from MDU procedres. The MDU also delivers material received from off station. Upon receipt of the material in supply, receiving personnel inform SRS. The SRS ensures that proper documentation is attached for delivery of the material. The SRS makes the appropriate entries on the requirements register, file, or log concerning the receipt. In activities that use the preposting method, MDU delivers the DD Form 1348 (6 pt) marked “warehouse refusal” to TRU via RCU for processing. NOTE: The NALCOMIS activities use the DD Form 1348-1 as an issue document. Distribution and use of DD Form 1348-1 copies may vary at each activity. PRE-EXPENDED BIN (PEB) UNIT.— The PEB unit contains high-usage, maintenance-related consumable materials that have been expended from the supply department stock records and financial accounts. The purpose of the PEB is to shorten the issue and accounting procedures for recurring issues of maintenance-related materials. The PEBs are located where they are readily accessible to maintenance personnel and, when feasible, where they can be observed by the retail outlet storekeeper to aid in recognizing abuses to the pre-expended system. Items subject to pilferage are retained within an enclosure with access limited to authorized personnel. The SRS is responsible for the management and maintenance of the PEB. This includes the replenishment or turn-in action, as required. The PEB stock is limited to maintenance-related material having a minimum demand frequency of three per month. The quantity of each item pre-expended may not exceed an estimated 30-day supply, subject to the requirement that stock be replenished in-full package quantities. The supply officer and the maintenance officer of the supported activity are jointly responsible for determining eligible items in the PEB. his includes items to be added or purged from pre-expended stocks. Eligible items with a unit cost of 0 or less may be routinely established in PEB stock. Eligible items with 9-8