L-T-80C
4.2 Responsibility for inspection. Unless otherwise specified in the contract or purchase order (see 6.2),
the contractor is responsible for the performance of all inspection requirements (examinations and tests)
as specified herein. Except as otherwise specified in the contract or purchase order (see 6.2), the
contractor may use his own or any other facilities suitable for the performance of the inspection
requirements specified herein, unless disapproved by the Government. The Government reserves the
right to perform any of the inspections set forth in this specification where such inspections are deemed
necessary to ensure supplies and services conform to prescribed requirements.
4.2.1 In-process inspection. Unless otherwise specified in the contract or purchase order (see 6.2),
equivalent in-process inspection may be substituted for the inspections described below provided that it
conforms to the application requirements specified in paragraph 5.3 of ASTM D3715/D3715M.
4.3 Quality conformance inspection.
4.3.1 End Item Inspection. Lot size, sampling and examination for this inspection shall be as specified in
paragraph 5.3 of ASTM D3715/D3715M.
4.3.2 Preparation for delivery. Tape shall be prepared for delivery in accordance with the applicable
levels of protection of Federal Specification PPP-T-680.
4.4 Testing. Lot size, sampling and examination for this inspection shall be specified in paragraph 5.3 of
ASTM D3715/D3715M. The AQL shall be 2.5 percent defective. Each unit of product shall be tested to
the applicable requirements of Table I of this federal specification. For each test, the number of replicate
specimens specified in the test method shall be taken from each sample unit and tested. When the
requirement is a numerical value the values obtained shall be averaged; and the average for that sample unit
for that test shall be reported. When the requirement is an attribute, such as freedom from corrosion, the
failure of any one of the specimens shall be considered a failure of the sample unit. With the exceptions of
4.5.1 and 4.5.2, all testing of Type II tape shall be performed after the release liner has been removed.
4.5 Test procedures.
4.5.1 Conditioning. The tape shall be conditioned for testing for not less than 24 hours at 73o F ± 3.5o F and
50% ± 5 percent relative humidity, and shall be tested under these conditions.
4.5.2 Accelerated aging. The rolls selected for accelerated aging shall be conditioned as described in ASTM
D3611 for a period of 12 days (288 hours). Following the completion of accelerated aging, the specimen
rolls shall be retained for use in those test procedures requiring aging test specimens.
4.5.3 Thickness (backing). The thickness of the aluminum foil backing shall be determined in accordance
with ASTM D3652/D3652M. A suitable solvent shall be used to remove the entire adhesive from the
backing prior to testing. This treatment shall be performed in a manner that will leave the backing smooth
for testing.
4.5.4 Tensile strength. The machine direction tensile strength of the tape shall be determined in accordance
with ASTM D3759/D3759M except that the apparatus need not be capable of measuring elongation.
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