IDENTIFICATION OF FACILITIES

Buildings and magazines, including open storage sites that contain ammunition, explosives, or chemical and inert components, are marked according to a standard system of identification so you can rapidly identify the hazards associated with their contents. This identification and numbering system is used in addition to any other numbers on the buildings. These standard identification markings are stamped out over other _{markings, if present.} The standard identification system consists of the magazine designator and the symbol indicator.

The magazine designator is a three-group symbol, composed of numbers and letters. It identifies a magazine by location of the magazine group, the number of the magazine within the group, and the type of magazine construction. The magazine group number, the type of magazine and capacity letter(s), and the magazine sequence number form the three-group symbol that makes up the magazine designator.

Magazine Group Number

The magazine group number is the first number of the magazine designator symbol. It shows the magazine group in which the magazine is located Each physically separated group of magazines or, at smaller stations, each noncontiguous magazine area is assigned a number, making it easy to rapidly and easily identify the group. The group numbers begin with 1 and continue in ascending numerical order. If only one magazine group exists, the number 1 is used. For example, the numeral 4 in the first position of the magazine designator 4XTX4 indicates that this magazine is located within magazine group 4.

Magazine Type and Capacity Letter(s)

The magazine type and capacity letter(s) shows the type and capacity of the magazine. For this reason, magazines of certain sizes are assigned a letter

Table 12-6.-Magazine Designators for Mass Detonating Hazard of High Explosives (Bulk, Depth Charges, Mines, Warheads, Bombs, etc.), Fuzes, Detonators, Exploders, and Black Powder

Table 12-7.-Magazine Designators for Fire Hazard of Powder (Bulk or Semifixed Ammunition), Pyrotechnics, Ignition Fuzes and Primers, Small Arms, Smoke Drums, and Explosive-Loaded Chemical Ammunition

Table 12-8.-Magazine Designators for Fragment Hazard of Projectile and Fixed Ammunition

designation as indicated in tables 12-6, 12-7, 12-8, and 12-9. To show the type of magazine, for example, the letter T is added if the magazine is earth-covered and barricaded If the magazine is earth-covered but not barricaded, the letter C is added. If the magazine is not earth-covered but is barricaded, the letter S is added. Therefore, in the magazine designator 4XTX4, the letter X in the second position indicates that the magazine size is miscellaneous or nonstandard, and it is normally used for storing high explosives. Also, the normal explosive storage limit depends on the magazine's size, location, and type of construction.

The explosive limits contained in tables 12-4 through 12-7 are maximum capacities, They are based on magazine design and construction characteristics. These limits are further subject to the Q-D considerations discussed previously. Additional limitations are shown in the magazine designator. When the Q-D relationship, as indicated in the tables, doesn't permit using the explosive capacity design of a standard magazine because of insufficient separating distances, the letter X, Y, or Z is added to the designator. These letters indicate the magazine contains mass detonation hazards, mass fire hazards, or fragment-producing hazards, respectively. For example, in the magazine

Table 12-9.-Magazine Designators for Miscellaneous Magazines

designator 4XTX4, the letter X in the fourth position tells you that the magazine doesn't have a sufficient separating distance from other structures or magazines,

Before 1985, naval facilities used to store or maintain ammunition or explosives used a standard two-part system of identification-a color-hazard indicator and a magazine designator. The color hazard indicator has been replaced by a system of fire, chemical hazard, and fire-fighting direction symbols.

When possible, mount placards at locations that are visible for a minimum distance of 500 feet in the daytime. Placards are placed on the road at distances of not less than 500 feet to indicate the magazine contents. This is required when visibility is obstructed by vegetation or curves in the road, When the contents of the magazine are changed or removed, the placards are also changed or removed. These placards are displayed to help fire fighters identify, from a safe distance, the type of hazards involved so they can determine the types of equipment and procedures to use. symbol shows the

AMMUNITION STORAGE ASHORE FOR ADVANCED BASES

LEARNING OBJECTIVE: Identify ammunition storage ashore for advanced bases to include facilities, magazines, and handling requirements,

Advanced base is the general term for a temporary base that is in or near a forward area outside the zone of the interior. The primary mission of an advanced base is to support wartime operations of the armed forces. Advanced bases are established to perform one or more of the following functions: to hold threatened strategic areas; to protect, or be part of, a line of communications and supply; to serve as a base for direct offensive operations; or to serve as a base for mounting or supporting further offensives.

If a valid reason for not complying with storage and handling regulations/instructions at advanced bases is not contained in NAVSEA OP 5, volumes 1 and 2, you need to refer to Ammunition Ashore, NAVSEA OP 5, volume 3.