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 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
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 ESQD
considerations
discussed
previously.
Additional
limitations are shown in the magazine designator.
When the ESQD 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 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 identificationa 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 vegetation or
curves in the road obstruct visibility. 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.
REVIEW NUMBER 1
Q1.
Mandatory regulations governing the storage
of ammunition ashore are found in ________.
Q2.
What prefabricated, concrete-constructed
magazine is earth-covered and arch-shaped?
Q3.
What is the normal size of a box-type mag-
azine?
Q4.
What
concrete-constructed
magazine
is
shaped like a beehive or dome?
Q5.
What magazine type consists of a tunnel or
cave that has varied dimensions?
12-11