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locker is not available, acid bottles must be stored
in the flammable liquids storeroom; but, in this
case, the deck and the lower part of the bulkhead
must be covered with a watertight rubber lining,
and a label inscribed ACID BOTTLE STORAGE
in 3/8-inch letters must be securely attached to
the outside of the storeroom door. Corrosive acids
are acute fire hazards and, therefore, should be
stored separately from oxidizing or flammable
materials. Corrosive acids (or vapors) must not
be allowed to come in contact with the skin or
eyes. SKs who store or issue these acids should
wear rubber gloves, rubber aprons, and goggles
(as necessary) to protect themselves and their
clothing from acid burns.
METALS
Bar stock, sheet metal, angle iron, tubing,
pipe, and other metals must be kept in racks
specifically designed for the storage of such
metals. The racks should be installed fore and aft
to minimize shifting of the stored material when
the ship is underway. Polished sheet metal and
aluminum tubing are easily scratched and dented
and, therefore, must be carefully handled and
secured in the rack. Gloves should always be worn
when handling metals to protect the hands from
injury and to protect certain metals (with polished
surfaces) from acid stains that can be caused by
perspiration. When possible, noncorrosive grease-
proof material will be used to separate dissimilar
metals required to be stored together, inasmuch
as direct contact between different metals may
cause corrosion due to electrolysis.
Since any required re-identification of metals
by chemical analysis is often impractical or too
costly, many metals that lose their identification
markings are likely to become unusable assets
and, in effect, lost to the supply system. Positive
identification of metals to be used in high-pressure
steam systems (or other critical shipboard systems)
is absolutely necessary. Therefore, it is essential
that the correct NSN, specification markings, and
the manufacturer’s markings (when appropriate)
are legibly indicated on each piece of metal in
storage and on each piece of metal issued for use.
SHELF-LIFE MATERIAL
Consistent with established Department of
Defense policy concerning the identification, con-
trol, and use of shelf-life items, procedures for
the proper management of such material are
prescribed in the following paragraphs. These
procedures are prescribed to reduce the large
financial losses experienced throughout the supply
system incident to nonuse of deteriorative items
before their shelf-life expiration dates and to make
sure overaged materials (that may be ineffective
or unsafe) are not installed in shipboard
equipments. Effective attainment of shelf-life
material control depends primarily on the efforts
of storeroom personnel.
To facilitate periodic screening of shelf-life
items, see the NAVSUP P-485. Applicable stock
records (and NAVSUP Forms 1075, if main-
tained) should be annotated or otherwise iden-
tified to indicate the proper shelf-life code.
Shelf-life codes currently assigned to applicable
NSNs in the ML-N are listed in the appendixes
of the NAVSUP P-485.
Marking of Stock
Per established supply distribution systems
procedures, shelf-life items issued by ashore
supply activities or delivered direct by contractors
will be marked (on the unit package, exterior con-
tainer, or material itself) as follows:
TYPE I SHELF-LIFE ITEM
DATE (MANUFACTURE/CURE/
ASSEMBLY)
EXPIRATION DATE
or
TYPE II SHELF-LIFE ITEM
DATE (MANUFACTURE/CURE/
ASSEMBLY)
INSPECTION/TEST DATE
EXTENDED EXPIRATION TEST
DATE
Type I (nonexpendable shelf-life) items are
those for which shelf-life action code UU is in-
dicated on the latest applicable NAVSUP Form
796. Refer to the NAVSUP P-485. All other shelf-
life action codes except 00 (nondeteriorative)
apply to type II (extendable shelf-life) items. Cur-
rent onboard stocks of shelf-life material should
be screened and, insofar as practical and nec-
essary, each item should be marked to show the
type I or type II shelf-life data described herein.
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