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ML-A-81359(AS)
4.4.1
Individual Tests - Each equipment submitted for acceptance shall be
subjected to the individual tests. These tests shall be adequate to determine compliance with
the requirements of material, workmanship, operational adequacy and reliability. As a
minimum, each equipment accepted shall have passed the following tests:
(1) Examination of Product
(2) Operational Test
(3) Manufacturing Run In Test
4.4.1.1
Examination of Product - Each equipment shall be examined carefully to
determine that the material and workmanship requirements have been met.
4.4.1.2
Operational Test - Each equipment shall be operated long enough to per-
mit the equipment temperature to stabilize and to check sufficient characteristics and
record adequate data to assure satisfactory equipment operation.
4.4.1.3
Manufacturing Run In Test - Each equipment shall be operated under the
conditions specified herein for a period of 6 hours without failure. A failure shall be de-
fined as anything which causes malfunctioning of the equipment. Only those adjustments will
be permitted which can be made by using such controls and adjustments that are accessible
to the operator during the normal use of the equipment.
Ambient room
Temperature
Humidity
Ambient room
Any selected frequency within the
Vibration
range of 20 to 30 Hz (excluding
resonant points) and a minimum
amplitude of 3 g's
The equipment shall be vibrated (without vibration isolators) for a period of 10 minutes prior
to the beginning of the 6-hour period of operation. Where feasible, the equipment shall be
operated during this vibration period for the purpose of detecting flaws and imperfect work-
manship. operation within the specified limits of satisfactory performance is not necessarily
required during the vibration period. The direction of vibration should be vertical to the
normal mounting plane for 5 minutes and lateral to the plane for 5 minutes, Where it is not
feasible to vibrate the equipment in 2 directions, the vertical direction shall be used. During
the 6-hour period of operation followlng the 10-minute vibration period, the equipment shall
be mechanically cycled periodically through its various phases of operation. Should a failure
occur, it should be repaired and the test started over, except that the 10-minute vibration
period need not be repeated when it is certain the failure was not a result of the vibration.
Should repetitive failures occur, corrective action shall be taken to eliminate this defect from
future equipment. A record shall be kept of all failures. The 6-hour period epecified above
may be composed of two 3-hour periods to conform with standard working hours.
4.4.2
Sampling Tests - Equipments selected for sampling tests shall first have
passed the individual tests. Equipments shall be selected for sampling tests by the govern-
ment inspector in accordance with the following: (Sampling tests shall not be conducted un-
less reliability assurance tests of 4.4.3 are deleted by contractual action. )
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