GGG-T-2761
4.2.1 First article inspection. First article inspection shall be performed
on one unit when a first article is required (see 3.2 and 6.6). This inspection
shall include the examination of 4.4 and the test of 4.5. Failure of the first
article to pass the examination or any of the tests shall be cause for
rejection. The first article may be either a first production item or a
standard production item from the supplier's current inventory provided the item
meets the requirements of the specification and is representative of the design,
construction, and manufacturing technique applicable to the remaining items to
be furnished under the contract.
4.2.2 Quality conformance inspection. Each unit furnished under a contract
shall be examined in accordance with 4.4, tested in accordance with 4.5, and
inspected in accordance with 4.6.
4.3 Sampling. Sampling and inspection procedures shall be in accordance
with MIL-STD-105. The unit of product shall be one tong unit. All tongs
offered for delivery at one time shall be considered a lot for purpose of
inspection (see 6.4).
4.4 Examination. Each sample selected shall be examined for compliance with
the requirements specified in section 3 of this specification. Any redesign or
modification of the contractor's standard product to comply with specified
requirements, or any necessary redesign or modification following failure to
meet specified requirements shall receive particular attention for adequacy and
suitability. This element of inspection shall encompass all visual examinations
and dimensional measurements. Noncompliance with any specified requirements or
presence of one or more defects preventing or lessening maximum efficiency shall
constitute cause for rejection.
4.5 Operational weight test. The sample tongs shall be set manually at the
center of a weighted pipe which shall be loaded by any convenient means to
obtain a gross load on the tongs for the size specified in 1.2. Gross loads
shall be not less than the following:
Size 4
-
1,250
pounds (lb)
Size 6
-
1,800
lb
Size 8
-
3,000
lb
Size 10
-
4,000
lb
-
4,500
lb
Size 12
The weighted pipe represents the heaviest load to be handled allowing a design
factor of not less than two. The tongs and weighted pipe shall be lifted, then
swung in an arc and set down. The tongs shall be released from the pipe by
slacking off of the line without any manual manipulation of the tongs. Failure
of the tongs to pass any test shall be cause for rejection.
4.6 Preparation for delivery inspection. The presentation,
packaging, packing, and marking of the tongs shall be inspected to verify
conformance to the requirements of section 5.
6
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