A-A-52080B
4. REGULATORY REQUIREMENTS.
4.1 The offerer/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR).
5. QUALITY ASSURANCE PROVISIONS.
5.1 Product Conformance. The products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings, specifications, standards, and quality assurance practices and be the same product offered for sale in the commercial market. The government reserves the right to require proof of such conformance..
5.2 Inspection Requirements
5.2.1 Determination of Percentage of Finish. The percentage of finish B, C, E and G impregnating materials on the respective type tapes shall be determined during processing, by the manufacturer, by weighing an identical sample of tape or yarn (see 3.6), before and after the impregnating process. The test specimen shall be a minimum of 30 yards of tape or 120 yards of yarn as applicable. Weight (Length per pound) shall be determined in accordance with Method 4010 of FED- STD-191. The percentage of finish shall be calculated as follows:
Percent Finish A-B x 100
B
Where: A = Length per pound of untreated tape or yarn, as applicable.
B = Length per pound of treated tape or yarn, as applicable.
5.2.2 Determination of Knot Slip Resistance. The knot slip resistance of the tapes shall be determined in accordance with Fed-Std-191 Method 4108, except as modified herein. The test specimens shall be cut in half and then the two halves shall be firmly tied together with a square knot. The two protruding ends at the knot shall be cut so that one-half inch protrudes. The specimen shall be aligned so that the knot is approximately halfway between the clamps. The machine shall be operated until the knot slips or pulls out or the specimen breaks at or in proximity to the knot. Breaks closer than 1/2 inch of the jaws shall be discarded. Five good readings shall be obtained. If knot slippage is obtained on only one of five readings, an additional specimen shall be tested and if a good reading is obtained, the reading indicating knot slippage shall be discarded.
5.2.3 Determination of Blocking. Ten turns of the tape shall be wound on a one-quarter inch
diameter clean metal mandrel under a two pound tension and the end secured through holes in the mandrel. Eight turns of tape shall then be wound on top of the first layer under the two pound tension and the ends secured as before. The wound mandrel shall then be placed in a temperature controlled oven at 70 + 1o C for two hours, and in such a manner that no part of the specimen comes in contact with the surface of the oven. The specimen shall then be removed and cooled at room temperature. After cooling, the outer layer shall be unwound and examined for evidence of damage to the coatings due to adhesion between layers of turns. The first layer shall be examined while still in place for similar evidence of adherence and damage.
6. PACKAGING.
6.1 Preservation, packing and marking shall be as specified in the contract or order.
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