*SB 742-1370-94-721
then for flare burning. Signals numbered 11 through 20
4. Personnel. Visual examination and function testing
and 31 through 40 will be tested first for flare burning
will be conducted under the direct control of a Quality
and then for smoke emission. Therefore, the entire
sample of forty signals will be divided into four groups
hereinafter referred to as a QASAS. All other personnel
(of ten each) depending on whether each signal was
must be familiar with the procedures and aware of the
water conditioned or not and which end was tested first.
hazards involved.
The inspection report must clearly indicate by sample
5. Size of sample. Unless otherwise directed, a
number the particular group to which every signal
sample size of forty (40) signals is required to make up
belongs.
a representative sample from a lot for a visual
examination and surveillance function test. To satisfy
b. The signal has an illustrated label or decal
the requirements of the periodic inspection prescribed in
which shows in detail the method of operation. The
conjunction with the surveillance function test, additional
plastic protective cap and/or the metal body on the flare
sampling of inner and outer packing is required by SB
end has protrusions or beads for night identification.
742-1.
The lanyard on the flare end pull ring has a washer tied
6. Sample selection. Sample signals will be selected
to the end for further identification in darkness. The
in accordance with the provisions of SB 742-1 except
plastic protective cap on the smoke end is smooth.
that not more than twelve signals may be selected from
c. Remove the protective cap which is fitted to the
any one box. If the samples are to be function tested at
signal body on the end to be tested. The sample signal
an installation other than the one at which the parent lot
should then be placed in the holding device on the
is stored, the packing boxes and containers which are
testing table (APE 1903) and canted at a 45 angle.
not shipped will be inspected and the appropriate part of
d. Keeping the face away from the signal, give a
DA Form 984 completed prior to shipment. Samples to
quick pull on the ring, which should come away from the
be shipped must be packed and marked in accordance
cap, and thereby remove the pull strip from the cover
with SB 742-1.
7. Surveillance test equipment. The surveillance
soldered cap in this manner, bring the pull ring down
function test of the signal requires a thermometer, two
over the rim of the can and press down with the heel of
stopwatches,
and
appropriate
personal
safety
the hand, using the ring as a lever to break the seal.
equipment, such as safety glasses (goggles and/or face
shield) and asbestos gloves. The following Ammunition
CAUTION
Peculiar Equipment (APE) may also be used:
Do not use a twisting motion on the
Immersion tank, APE 1901; Testing table, APE 1903;
pull ring since the pull tab may break
and Cup-cased thermometer, APE 1912.
precluding that end of the signal
8. Preparation for test.
from functioning. If the smoke end
a. Number the sample signals I through 40 and
flames, an attempt should be made
identify each one as to the box from which it was drawn.
to snuff out the flame by vigorously
Complete the periodic inspection in accordance with SB
shaking, quickly rotating, and/or
742-1 and record the appropriate observations
momentarily submerging the smoke
described in paragraphs 10 and 12 below.
end in water, sand, or dirt. Smoke
b. Immerse half of the samples, signals I through
should resume. Any time a burning
20, in water at 70 10 (21.1 5.6 ) for 24 hours.
F
C
signal is touched or held by hand,
Position them horizontally 6 to 9 inches (15 to 20
the operator must wear asbestoss
centimeters) below the water surface. The immersion
gloves (or equivalent) and suitable
tank (APE 1901) may be used for this purpose. These
signals will be wiped dry and tested as outlined in
goggles, and/or face shield). The
paragraph 9 below within two hours after removal from
signal should be held at arm's length
the water.
and canted at a 45 angle (except
c. The remaining samples, signals 21 through 40,
when snuffing out flame).
will receive no treatment or conditioning prior to testing.
e. After one end of the signal has been tested, it
9. Test procedure. This test is to determine the ability
will be allowed to cool; and then the other end will be
of the signal to ignite and provide satisfactory smoke
tested following the above instructions. The end that
has been tested may be doused in water as soon as it
Testing will not be conducted in a strong wind; during an
stops burning in order to cool the metal parts rapidly so
electrical, rain, or snow storm; or during any other
that the other end may be tested immediately. Do not
conditions that might adversely affect the test results.
completely submerge the whole signal in water (with one
Testing also must comply with all other applicable
pull strip removed, it is no longer waterproof). Suitable
regulations; i.e., US Environmental Protection Agency
gloves and eye protection must be worn while handling
(EPA), etc.
burning or hot signals.
a. Signals with sample numbers I through 10 and
21 through 30 will be tested first for smoke emission and
2