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TITLE(s): PRESSURE-TEST OPERATOR (ordnance) Measures propellant force of powder charge by firing small arms cartridges and shotshells in pressure-testing device: Selects test barrel according to type and caliber of cartridge to be fired. Secures breech end of barrel in fixture containing breech-block, hammer, and firing pin, using handtools and gauges. Inserts gas check and steel piston into vent in barrel wall. Positions lead or copper slug of standard length on piston and tightens yoke-mounted setscrew which acts as anvil to secure it. Fires cartridge and measures compressed slug for reduction in length, using micrometer. Converts reduction in slug length to pressure expressed in pounds-per-square inch, using conversion chart. Computes average pressure for specified number of cartridges. May perform velocity tests on projectiles. GOE: 06.03.01 STRENGTH: L GED: R3 M3 L2 SVP: 4 DLU: 77 ONET CROSSWALK: 83005A Production Inspectors, Testers, Graders, Sorters, Samplers, Weighers |
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TITLE(s):
PRESSURE-TEST OPERATOR (ordnance)
Measures propellant force of powder charge by firing small arms cartridges and shotshells in
pressure-testing device: Selects test barrel according to type and caliber of cartridge to be fired.
Secures breech end of barrel in fixture containing breech-block, hammer, and firing pin, using
handtools and gauges. Inserts gas check and steel piston into vent in barrel wall. Positions
lead or copper slug of standard length on piston and tightens yoke-mounted setscrew which acts as
anvil to secure it. Fires cartridge and measures compressed slug for reduction in length, using
micrometer. Converts reduction in slug length to pressure expressed in pounds-per-square inch, using
conversion chart. Computes average pressure for specified number of cartridges. May perform velocity
tests on projectiles.
GOE: 06.03.01 STRENGTH: L GED: R3 M3 L2 SVP: 4 DLU: 77
ONET CROSSWALK: 83005A Production Inspectors, Testers, Graders, Sorters, Samplers, Weighers
© 1995 - 2015 Photius Coutsoukis and Information Technology Associates (All Rights Reserved). Revised 26-May-03