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1-4, and 1-5 should not be used. Rusty cans maybe used
provided the rust does not penetrate the can. Rust that
can be wiped off is not penetrating.
CAN INTERIOR.— Contents should be removed,
the can rinsed, and the interior examined for pinholes
against a strong light. If pinholes are present, contents
should be discarded.
CONTENTS.—
Contents of can should be
examined for characteristic odor and appearance of the
product.
REJECTION OR SURVEY.— Except for coffee
and molasses, foods contained in cans displaying the
following conditions are unsatisfactory and should be
surveyed and disposed of:
Figure 1-5.—A severely dented can in which the end seam is
pulled out of position.
Figure 1-3.-Severe angularly dented can with crimping of
body.
Figure 1-4.-Severe dent that buckles end seam of a can.
Pinholes-tiny holes caused by action of food acids
during prolonged storage.
Swells (or swellers)—both ends of cans bulge
outward because of bacterial action and gas production.
Ends do not yield to finger pressure. (Molasses may
bulge in tropical areas, but this condition is not
dangerous and the product need not be rejected for this
reason.)
Springers—one or both ends bulge outward because
of bacterial action and gas. However, this bulge will
yield on pressure and spring back to bulge condition on
release.
Springers or swellers of coffee containers,
however, usually indicate a properly sealed container
that has merely retained natural coffee-bean gases.
Flippers—both ends are flat, but one end will bulge
out ward when the opposite end receives pressure. This
condition is caused by either bacterial action or chemical
action resulting in gas production.
Spoiled or Damaged Food Products
Several precautions eliminate the factors that cause
spoiled or damaged food items. These precautions
include inspection for quality upon receipt, proper
storage and handling, and maintenance of required
temperatures relative to each respective phase of the
operation. The absence of any one of these precautions
may encourage food spoilage and damage.
The following hazardous material should be
disposed of accordingly, using the applicable survey
procedures outlined in NAVSUP P-486, volume I:
1-11
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