building has become the standard warehouse. The location of office space in this type of warehouse may be within the building or outside of the warehouse. In either case, the location of the office space is on the same side of the warehouse as the truck docks. Normally, two main aisles run the length of the warehouse. This is to allow material handling equip mentor supplies to move straight through the length of the warehouse. Typically, cross aisles connect the main aisles. The functions found in the general-purpose warehouse include retail issues, bulk storage, receiving, shipping, preservation, security areas, and admin- istrative offices. The refrigerated warehouse outwardly resembles a general-purpose warehouse, although it is usually smaller. This warehouse is usually in two separate parts. One part is a chill space with controlled temperatures between 36°F and 46°F. The other part is a freeze space that allows control of the temperature below 32°F. Because the chill and freeze spaces divide the refrigerated warehouse, there are no main aisles that run the length of the entire warehouse. The flammable storage warehouse is built of noncombustible material and has fire walls with a 4-hour fire-resistance rating. The main source of protecton comes from an alarm and automatic sprinkler system. Sheds are buildings without complete sides and end walls. The Navy uses sheds for storing materials that require maximum ventilation or materials that do not require complete protection from the weather. OPEN STORAGE SPACES.— The open storage spaces are improved or unimproved open areas used for storage purposes. The open improved storage spaces include graded spaces or areas and areas surfaced with concrete, tar or asphalt, gravel, or other suitable topping. The Navy uses these spaces for storing certain materials invulnerable to damage by adverse weather conditions. Open unimproved storage spaces are unsurfaced open areas used for storage. The significant dis- advantage of this type storage is the limitation on the use of material handling equipment. Types of Storage Facilities Afloat There are several types of storerooms afloat. In most ships, the general stores (S-1) and aviation stores (S-6) divisions use the same spaces to store material common to both. Storage locations of material specifically used by the ship are in spaces assigned to the S-1 division. Aviation items are stored in spaces assigned to the S-6 division. The main issue storeroom is the space set by the supply officer as the central distribution point for the general stores division. Generally, this space is the most accessible of all stock stowage spaces when watertight integrity restrictions are in effect. This storeroom contains a locator system either in manual or automated format. All receipt and expenditure documents normally channels through the main issue storeroom. The bulk storerooms are spaces used for storing wholesale quantities of small items and heavy and bulky material. The repair parts storerooms are spaces used for stowage of all repair parts. The only exceptions are those bulkhead-mounted spares and material authorized for stowage in other departments. Repair parts storerooms contain stowage aids, such as bins, drawers, shelves, racks, and cabinets used for stowing material. Material needed to support aviation maintenance is stored in the maintenance support package (MSP) storeroom under the S-6 division. Aviation repairable parts are stored in separate storerooms in the S-6 division. The flammable liquid storeroom can beat either end of the ship, below the full load waterline. This space must be as far away as possible from the magazines. This storeroom must have automatic fire alarm and fire- extinguishing equipment (CO2 or HALON system). Also, this storeroom should have incandescent and explosionproof overhead lights (protected by lamp guards) with the switch outside the compartment. Flammable items stored in this storeroom have an assigned material content code (MCC) of D, F, G, P, S, and Z in the Hazardous Material Information System (HMIS). Refer to the HMIS and NAVSUP-P485 for information concerning handling of hazardous materials. TEMPORARY STORAGE OF SHIPBOARD MATERIAL BY SHORE ACTIVITIES When necessary, ships may use shore facilities to store material temporarily. Temporary storage of allow- ance list items of equipage or equipment over 1 year must have prior approval by the type commander. Consumable materials, tools, and other items required to support ship’s equipage and equipment will not be offloaded for temporary storage. However, some items may be offloaded as authorized during shipyard, overhaul, conversion, or change of mission. The ship requesting storage is responsible for arranging the offload and return of material. The requesting ship is also responsible for informing the storage activity of any change in the length of storage. 6-3