SB 740-94-8
Table C-3. Cylinder, Compressed Gas (Agent) NSN 1040-00-116+0355
Category defect No.
Defect
Inspection method
Critical:
1
Agent tank hydrostatic pressure test failure.
Test, paragraph C-4c(2)
2
Agent tank cracked or dented.
Visual
Other
Refer to "Quality Defect Codes" in appendix A.
Visual
Major:
101
Hydrostatic test date marking missing from agent tanks.
Visual
Other
Refer to "Quality Defect Codes" in appendix A.
Visual
Minor:
Refer to "Quality Defect Codes" in appendix A.
Visual
Table C-4. Cylinder, Compressed Gas (Air), NSN 104-00-198-4924
Category defect No.
Defect
Inspection method
Critical:
1
High pressure tank hydrostatic volumetric test failure.
Test, paragraph C-4c(1)
2
High pressure tank cracked or dented.
Visual
Other
Refer to "Quality Defect Codes" in appendix A.
Visual
Major:
101
Hydrostatic test date marking missing from high pressure tank.
Visual
Other
Refer to "Quality Defect Codes" in appendix A.
Visual
Minor:
Refer to "Quality Defect Codes" in appendix A.
Visual
Table C-5. Gun, Portable, Riot Control Agent Disperser, NSN 1040-01-060-8579
NOTE
This gun is listed as Gun, Spray, Chemical in the Army Master Data File.
Category defect No.
Defect
Inspection method
Critical:
None defined.
Major:
101
Gun assembly leakage and functioning test failure.
Test, paragraph C-4c(4)
102
Functioning slow or not positive
Test, paragraph C-4c(4)
Other
Refer to "Quality Defect Codes" in appendix A.
Visual
Minor:
Refer to "Quality Defect Codes" in appendix A
Visual
should be of sufficient strength to
c. Tests.
withstand an impact resulting from a
WARNING
rupture of the test equipment or
Only authorized personnel (those
specimen.
thoroughly trained in the operation
(1) M33A1
disperser,
high
pressure
tank,
of the disperser) are permitted to
hydrostatic volumetric test.
charge, service or function the
disperser.
Personnel shall wear
(a) Requirements.
No leakage shall be
approved eye protective equipment
observed when the high pressure tank is subjected to an
internal hydrostatic pressure of 3500 + 50 pounds per
when conducting tests.
Firmly
square inch gage (psig) for a period of 60 + 10 seconds.
anchor all pressure hoses, test
This test shall be performed by the water jacket, or other
specimens, or other pieces of
suitable method. Permanent volumetric expansion may
equipment
capable
of
being
not exceed 10 percent of the total volumetric expansion
propelled in the event of rupture.
during the tests. If the test. pressure cannot be
Examine test samples and test
maintained, because of test equipment failure, repeat
equipment for foreign matter prior to
the test at a pressure increase of 10 percent, or 100
testing. Isolate the test equipment
psig, whichever is the smaller increase.
and specimens when conducting
(b) Equipment required. A water jacket and a
hydrostatic or functional tests.
regulated pressure source (3600 psig). The pressure
Where possible, locate pressure
gages shall be checked for a minimum accuracy of + I
gages and operating controls a safe
minor scale division. The expansion gage shall be of
distance from the test site. When
such precision as to permit a reading to an accuracy of
conducting a visual examination for
either one percent or 0.1 cubic centimeter.
leakage, a portable shield mounted
on casters may be used. The shield
C-3
