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Noise level testing requirements |
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|  MIL-T-52896B(ME)
4.3.2.14 Noise level testing requirements. The equipment noise level at operator's station and
all immediate occupied areas shall not exceed 85dB(A) when tested in accordance with the
requirements of 5.1 of MIL-STD-1474. The data shall include dB(A) levels taken at the
operator's station and all occasionally occupied positions. Exterior noise levels for drive-by shall
not exceed 88dB(A) when tested in accordance with the requirements of 5.1 and 5.2 of
SAE J1077. If the data exceeds the limits specified in category D, table 2 of MIL-STD-1474, for
equipment noise level, or 88dB(A) for drive-by, the contractor shall reduce the noise level or
provide documentation verifying that compliance is either technically or economically unfeasible.
4.3.2.14.1 Failure criteria. Failure to reduce the noise level or provide documentation
verifying that compliance is either technically or economically unfeasible shall constitute failure of
this test.
4.4 Quality conformance inspection.
4.4.1 Examination. Each truck-mounted mixer shall be examined for the following
characteristics. Presence of one or more defects shall be cause for rejection.
101.
Mixer construction not as specified.
3.3
102.
Hopper not as specified.
3.3.4
103.
Bins and tanks not as specified.
3.3.3
104.
Water system not as specified.
3.3.5
105.
Mixing system not as specified.
3.3.6
106.
Mixer drive train not as specified.
3.3.8
107.
Quick loading cement bin not as specified.
3.3.9
108.
Admixture system not as specified.
3.3.10
109.
Air system not as specified.
3.3.11
110.
Truck chassis not as specified.
3.4
111.
Lubrication not as specified.
3.5
112.
Ease of maintenance not as specified.
3.6
113.
Maintainability not as specified.
3.6.1
114.
Interchangeability not as specified.
3.6.2
115.
Safety not as specified.
3.7
116.
Materials are not resistant to corrosion or deterioration
3.9
or treated to be made resistant to corrosion or deterioration
for the applicable storage and operating environment.
117.
Dissimilar metals as defined in MIL-STD-889 are not
3.9.1
effectively insulated from each other
118.
Contractor does not have documentation available for
3.9.2
identification of material, material finishes or treatments.
119.
Sling attachment not as specified.
3.10
120.
Tiedown attachments not as specified.
3.11
121.
Treatment and painting not as specified.
3.12
122.
Marking not as specified.
3.13
12
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