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Material deterioration prevention and control. |
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|  MIL-M-53078(ME)
bought into close contact as possible, and in no event shall be separated by more than 3/16 inch
unless appropriate bridging techniques are used. The welding process used in fabrication of the
mounting kit shall be as specified in applicable drawings. No deviations from these requirements
are permissible without prior approval from the procuring activity.
3.9.1.2 Welders and welding operators. Before assigning any welder or welding operator to
welding work covered by this specification, the contractor shall make available to the contracting
officer certification that the welder or welding operator has passed qualification tests as
prescribed, by either of the following listed codes, for the type of welding operations to be
performed, and that such qualification is effective as defined by the particular code:
AWS D1.1 - Structural Welding Code - Steel
ASME Boiler and Pressure Vessel Code, Section IX, Welding and Brazing Qualifications
Contractors who make only horizontal welds need not qualify welders or welding operators for
"all position welding." The contractor shall be responsible for determining that automatic welding
equipment operators are capable of producing quality welds in accordance with AWS or ASME
codes. The Government reserves the right to require recertification of any welder or welding
operator.
3.9.1.3 Inspection. Inspect all welds as per drawings. No cracks are permissible.
Workmanship specimens that are required by the applicable specifications shall be approved by
quality assurance representatives of the procuring activity.
3.10 Safety. The mounting kit shall be designed in accordance with the design guidelines of
MIL-STD-882. Electrical components shall meet requirement 1 of MIL-STD-454.
3.11 Materials. Materials shall be as specified herein and on the drawings. Materials not
specified shall be selected by the contractor and shall be subject to all provisions of this
specification.
3.11.1 Material deterioration prevention and control. The mounting kit shall be fabricated
from compatible materials, inherently corrosion resistant or treated to provide protection against
the various forms of corrosion and deterioration that may be encountered in any of the applicable
operation and storage environment to which the item may be exposed.
3.11.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each
other unless protected against galvanic corrosion. Dissimilar metals and methods of protection
are defined and detailed in MIL-STD-889.
3.11.3 Identification of materials and finishes. The contractor shall identify the specific
material, material finish or treatment for use with each component and subcomponent, and shall
make information available upon request to the contracting officer or designated representative.
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