MIL-PRF-0032482(SH)
4.6.2.2 Proof test. The proof test shall be comprised of the following.
4.6.2.2.1 Proof pressure test. The QAWTD shall then be tested to its proof pressure and held for 10 minutes.
Leakage past the gasket is allowed, but the QAWTD shall not permanently deform. The QAWTD shall function
normally at the conclusion of the hydrostatic test. Failure to meet the requirements of this test shall be cause for
rejection.
4.6.2.2.2 Proof operational test. Each QAWTD shall be operationally tested to verify the requirements as
specified in table II. The panel shall be opened to the maximum door swing angle (see 3.4.7.1) from a closed and
dogged position. The force to open the door shall be measured perpendicular to the door panel. This opening force
shall not exceed the specified value. The panel shall then be closed and dogged. The transition from fully open to
the closed and latched position shall be smooth with no perceivable binding. Failure to meet the requirements of
this test shall be cause for rejection.
4.6.3 Reliability test. The reliability test shall be comprised of the following and shall be accomplished in the
following order.
4.6.3.1 Hydrostatic test. Prior to cycle testing, a hydrostatic test shall be performed up to design pressure.
Design pressure shall be held for 10 minutes with no leakage. Failure to meet the requirements of this test shall be
cause for rejection.
4.6.3.2 Cycle test. The QAWTD assembly shall be tested to one million cycles of operation with the QAWTD
properly adjusted to hold design tightness pressure. A cycle of operation is defined as starting with the QAWTD
closed and dogged, then undogging and opening the QAWTD to 90 degrees, and then closing and dogging the
QAWTD. No replacement, repair, or adjustment shall be allowed during the test. At the completion of the test,
acceptance criteria shall be that no parts shall require replacement, repair, or adjustment. The QAWTD shall then be
chalk tested. Failure to meet the requirements of this test shall be cause for rejection.
4.6.3.3 Chalk test. The bearing surface of the knife-edge shall be chalked and the door or hatch shall be closed
by normal procedure. When the door or hatch is opened, the chalk from the knife-edge shall have been transferred
to the gasket. Acceptance criteria for the chalk test shall be a uniform and continuous chalk mark on the door s or
hatch s gasket. If there are irregularities or breaks in the chalk mark, the gasket or knife-edge shall be adjusted or
replaced and the test shall be repeated. Failure to meet the requirements of this test shall be cause for rejection.
4.6.3.4 Design pressure test. After the chalk test is successfully completed, a hydrostatic test shall be
performed up to design pressure. Design pressure shall be held for 10 minutes with no leakage. Failure to meet the
requirements of this test shall be cause for rejection.
4.6.4 Shock test. A complete QAWTD assembly shall be tested in accordance with MIL-S-901 medium weight
shock test, Grade A, Class I, hull mounted, front or face mounting plane requirements. The shock testing shall take
place in one of the approved facilities in accordance with NAVSEAINST 9491.1. The QAWTD shall be
hydrostatically tested to design tightness pressure prior to shock testing, and at the end of each of the three (3) sets
of three (3) shock blows. The shock test shall consist of a total of nine (9) blows; three (3) in the vertical direction
and three (3) each in two (2) different inclined orientations of 30 degrees. No adjustments shall be allowed between
each set of three (3) blows. The QAWTD shall remain latched throughout the test and shall not open at any time,
and no parts or piece parts shall disengage themselves from the assembled QAWTD during any part of the testing.
After the shock test has completed, a hydrostatic test shall be performed up to design pressure. Design pressure
shall be held for 10 minutes with no leakage. Failure to meet the requirements of this test shall be cause for
rejection.
4.6.5 Vibration test. Prior to vibration testing, a hydrostatic test shall be performed up to design pressure.
During vibration testing, the QAWTD assembly shall be capable of withstanding shipboard vibration in accordance
with MIL-STD-167-1 when subjected to vibration throughout the frequency range of 4 to 15 Hertz. The QAWTD
shall remain latched throughout the test and shall not open at any time, and no parts or piece parts shall disengage
themselves from the assembled QAWTD during any part of the testing. After the vibration test has completed, a
hydrostatic test shall be performed up to design pressure. Design pressure shall be held for 10 minutes with no
leakage. Failure to meet the requirements of this test shall be cause for rejection.
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