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Page Title:
Instruction plates and labeling |
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|  MIL-C-52973A(ME)
3.19 Identification marking. The compressor unit shall be identified in
The marking shall be applied to the compressor on
accordance with MIL-STD-130.
plates conforming to MIL-P-514, type I, style 1, composition C, of type I, grade
Plates shall be attached by screws, bolts or rivets in a
A, class I material.
conspicuous protected location.
3.19.2 Instruction plates and labeling. Each compressor unit shall be
equipped with instruction plates, including diagrams, warnings, and cautions,
describing any special or important procedures to be followed in assembling,
Instruction plates shall conform to
operating, or servicing the compressor unit.
Plates
MIL-P-514, type III, composition C, of type I, grade A, class I material.
shall be attached by screws, bolts or rivets in a conspicuous protected
Labeling shall comply with MIL-STD-1472, 5.5.
location.
The portions of the compressor unit normally
3.20 Treatment and painting.
painted internally and externally shall be cleaned, treated, and painted in
Unless otherwise specified (see
accordance with NAVFAC DM 39, as applicable.
6.2) top coat color shall be camouflage green 383 conforming to MIL-C-46168.
3.21 Workmanship.
3.21.1 Casting and forgings.
All parts, components , and assemblies of the
compressor unit which include castings and forgings shall be clean of harmful
Rework
extraneous material such as sand, dirt, pits, sprues, scale, and flux.
shall be limited to procedures which do not reduce strength or affect function.
Metal used in fabrication shall be free from kinks
3.21.2 Metal fabrication.
The straightening of material shall be done by method that will
and sharp bends.
Flame
Corners shall be square and true.
not cause injury to the material.
cutting, using tips suitable for the thickness of the steel q ay be employed
All bends shall be made with controlled means to
instead of shearing and sawing,
Precaution shall be taken to avoid
insure uniformity of size and shape.
External surfaces
Heated steel shall be allowed to cool slowly.
overheating.
shall be free of burrs, sharp edges and corners, except when sharp edges or
corners are required or where they are not detrimental to safety.
The surfaces of parts to be welded shall be free from rust,
3.21.3 Welding.
scale, paint, grease, mill scale that can be removed by chipping and wire brush-
ing and other foreign matter. Welds shall transmit stress without pemananent
deformation or failure when the parts connected by the welds are subjected to
proof and service loading. Parent materials, weld filler metals, and fabrication
techniques shall be as required to enable the compressor unit to conform to the
Parts to be jointed by
examination and test requirements specified in section 4.
fillet welds shall be brought into as close contact as possible and in no event
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