MIL-B-18F
TABLE VI. Group B inspection sampling plan.
Lot size
Sample
Sample
Sample
Sample size
size A
size B
size C
D
2 to
8
13
All
5
5
9 to
15
13
13
5
5
16 to
25
13
13
5
5
26 to
50
13
13
5
5
51 to
90
13
13
7
5
91 to
150
13
13
11
5
151 to
280
13
20
13
5
281 to
500
13
29
16
5
501 to 1,200
13
34
19
20
1,201 to 3,200
50
42
23
20
3,201 to 10,000
50
50
29
20
TABLE VII. Group C inspection.
Method of test
Tests
Requirement
paragraph
paragraph
Capacity T
4.7.11 through 4.7.11.4
Capacity D
4.7.11 through 4.7.11.4
4.6.1.4.1 Sampling plan. A sample, consisting of ns batteries, shall be selected at random from production for each
shipment lot in quantities determined from the formula below, and rounded off in the case of fractions, to an adjacent
integer (up or down for each shipment lot), so that exactly n batteries have been assigned to each capacity test (T and
D), when the sample for the final shipment of the contract lot has been drawn.
NS
(2n)
nS =
N
Where:
ns
=
Total number of sample batteries to be taken from each shipment lot.
Ns
=
Number of batteries in the shipment lot.
N
=
Number of batteries in the contract lot (see table VIII).
n
=
Number of batteries to be taken from the contract lot for each of the two capacity tests, T and D,
in accordance with table VIII (Total number of batteries selected in 2n).
22
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