 |
|||
|
|
|||
| ||||||||||
|
|  MIL-R-81202D(AS)
4.6.7 Burst pressure. The receiver assembly shall be hydrostatically
pressurized to 6700 +/-1OO psig for three minutes. To conduct this test, the
pressure relief valve shall be removed from the nitrogen receiver and a suit-
able pressurization fitting installed. There shall be no failure of parts.
Deterioration of the pressure indicator accuracy shall not constitute a fail-
ure. This is considered a destructive test (see 3.1.2).
4.6.8 Service life. The receiver assembly shall be subjected to the fol-
lowing service life test performed hydrostatically:
a.
A total of 500 cycles, as follows, at a maximum rate of 6 cycles
per minute:
(l.) Pressurize receiver to 225 +/-50 psig.
(2.) Increase pressure uniformly to 4000 +/-250 psig.
(3.) Exhaust uniformly to 225 +/-50 psig.
b.
A total of 4000 cycles, as follows, at a maximum rate of 9
cycles per minute:
(l.) Pressurize receiver to 2500 +/-150 psig.
(2.) Increase pressure uniformly to 3500 +/-200 psig.
(3.) Exhaust uniformly to 2500 +/-150 psig.
c.
A total of 500 cycles, as follows, at a maximum rate of 6
cycles per minute:
(1.) Pressurize receiver to 225 +/-50 psig.
(2.) Increase pressure uniformly to 4000 +/-250 psig.
(3.) Exhaust uniformly to 225 +/-50 psig.
To conduct this test, the pressure relief valve shall be removed from the ni-
trogen receiver and a suitable pressurization fitting installed. At the com-
pletion of the test, the nitrogen receiver shall be visually inspected for
damage and tested in accordance with 4.6.5.2 and 4.6.5.3.
5.
PREPARATION FOR DELIVERY
5.1 Receiver assembly preservation and packaging. Preservation and pack-
aging shall be in accordance with Level A or C of MIL-STD-794, as specified in
the contract or purchase order (see 6.2.1).
20
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals