e. All instances of any of the following
4. Size of sample. The number of signals required to
(1)
Nonstandard marking.
State whether
make up, a representative sample from a lot for a
misleading, incomplete, or unidentifiable.
surveillance test is as follows:
(2) Rust or corrosion. Give location and extent.
For cheek investigation ................ as directed
(3) The occurrence of any of the nonstandard
For clarification investigation ............. 48
conditions or malfunctions classified as defects in
For confirmation investigation ...... as directed
(4)
The occurrence of any nonstandard
5. Sample selection. Sample signal will be selected in
conditions or malfunctions not classified as defects in
accordance with the provisions of SB 742-1 with the
exception that not more than eight signals may be
responsible personnel merits consideration.
selected from any one box.
9. Classification of defects. Defects observed during
6. Preparation for test. a. Number the signals 1
inspection and testing will be classified in accordance
through 48 and identify them as to box from which
drawn.
Any defects observed which are not listed in paragraphs
b. Immerse signals 1 through 24 (without cartridges
10 and 11 will be
fully described and reported with the
and without fiber containers) in water at 70F 10 for
F
15 to 20 minutes. Position signals horizontally 6 to 9
classification.
inches below the water surface. APE 1901 equipment
should be used for this purpose. Signals will be wiped
10. Nonfunctioning Defects. a. Major
(1) Disk and disk lining missing.
two hours after removal from the water.
(2) Major damage (para 1-5c (5) (b), SB 742-1)
c. Signals 25 through 48 will receive no treatment
to components such as:
prior to testing.
(a) Container bulges, indicating serious gas
formation.
7. Test procedure. a. Signals will be projected from a
(b) Identification top disassembled to the
rifle grenade launcher of the M7 series attached to the
extent that the waterproof seal is broken.
muzzle of a service rifle using caliber .30 grenade
(c) Identification top damage to the extent
cartridge M3. The rifle will be fired in a vertical position
that the waterproof seal is broken.
mounted on Holding Device APE 1902. Signals will not
(d) Either of the following cracked to an
be fired when wind velocity exceeds 15 mph. Signals
extent which precludes use of the signal:
with cracked, bent, or otherwise distorted bodies or
1 Case
stabilizer assemblies will not be fired but will be reported
2 Stabilizer
(e) Disk and disk lining damaged to the
b. Cartridges packed with corresponding signals will
extent that propelling charge can escape.
be used in these tests unless their use is precluded
(3) Major rust (para 1-5c (4) (b), SB 742-1).
because they are not standard for the rifle being used, in
(4) Major corrosion (para 1-5c (4) (c) 2, SB 742-
which case, other rifle grenade cartridges that are
1).
standard for the rifle being used may be substituted. If
b. Minor.
substitute cartridges are used, the grade for the lot will
(1) Plug pulled out of assembly.
not apply to the cartridges packed with the signals.
(2) Identification top not fully seated.
(3) Identification top inadequately lacquered.
8. Observations. All observations of nonstandard
(4) Cork plug not removable by hand.
conditions and malfunctions, especially those not
(5) Minor rust (para 1-5c (4) (b), SB 742-1).
(6) Minor corrosion (para 1-5c (4) (c) 1, SB 742-
11 below, should be
described in
full detail. Pictorial
1).
evidence of nonstandard conditions, whenever pertinent
and practical, should be included. The observations to
11. Functioning defects. a. Critical.
be reported are as follows:
(1) Signal bursts on launcher or less than 50
a. Time, to nearest tenth of a second, from firing to
feet from launcher.
ignition of signal composition (for information purposes).
(2) Candle is wrong color.
b. Functioning altitude, to the nearest foot. APE
b. Major.
1908 equipment should be used for this purpose.
(1) Misfire
c. Altitude at extinction, to the nearest foot (for
(2) Hangfire
information purposes).
(3)) Signal functions at less than 150 feet but
d. Total burning time above 100 feet, to the nearest
not less that 50 feet from launcher.
tenth of a second.
2