 |
|||
|
|
|||
| ||||||||||
|
|  or decantation. The solution shall be adjusted to and maintained at a spe-
cific gravity of from 1.126 to 1.157 and at a pH of between 6.5 to 7.2,
and 97%. Only C.P. hydro-
when measured at a temperature between
chloric acid or C.P. sodium hydroxide shall be used to adjust the pH.
4 4.9.2.1.6 Temperature - The test shall be conducted with the tem-
perature in the chamber maintained at 85F.
4.4.9.2.1.7 Atomization. - The conditions maintained in all parts of
the exposure zore shall be such that a receptacle placed at any point in the
exposure zone will collect from 0.5 to 3 milliliters of solution per hour
for each 80 square centimeters of horizontal collecting area (10 centimeter
diameter). When using nozzles made of material nonreactive to the salt sol-
ution, suitable atomization usually can be obtained in boxes having a vol-
ume of less than 12 cubic feet with the following conditions:
(a) Nozzle pressure between 12 and 18 pounds per square inch.
(b) Orifices between 0.02 and 0.03 inch in diameter.
(c) Atimization of approximately 3 quarts of the salt solution per
10 cubic feet of box volume per 24 hours.
4 4 .9.2.1,8 Duration - The length of the salt spray test shall be not
Salt deposits resulting from the test conditions may be
less than 50 hours
removed by washing and drying prior to operation.
PREPARATION FOR DELIVERY
5
5.1 General - Requirement for packaging, packing. testing and marking
for shipment shall be as required by the individual specification.
6. NOTES
6 1 Limitations. - Environmental conditions more extreme than the re-
quirements of this specification occur; however. because the frequency of
their occurrence has not been adequately established. their use here" in
a general specification cannot be justified. Where appropriate, more
severe requirements shall be specified in the individual specification.
6.2 Additional tests. - Testing beyond that defined In this specifica-
tion will be required to meet the objective of the various torpedo programs.
For example, field testing will be required in Bureau of Ordnance Torpedo
Evaluation Programs.
6.3 Artificial environments. - Individual components of a torpedo may
be subjected to environmental conditions beyond the requirements of this
specification. An example might be additional temperature effects on com-
ponents adjacent to propulsion machinery which radiates heat during the
operating state of the torpedo. Such artificial environments are not in-
cluded here.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals