Table 160.176-15A-Manufacturer's Sampling Plan
Number of Samples Per Lot | ||||||
Lot Size | ||||||
1-100 | 101-200 | 201-300 | 301-500 | 501-750 | 751-1000 | |
Tests: | ||||||
Inflation Chamber Materials | ||||||
SEE NOTE (1) | ||||||
Seam Strength | 1 | 1 | 2 | 2 | 3 | 4 |
Over-pressure2 3 | 1 | 2 | 3 | 4 | 6 | 8 |
Air Retention | ||||||
EVERY DEVICE IN THE LOT | ||||||
Buoyancy & Inflation Media Retention | 1 | 2 | 3 | 4 | 6 | 8 |
Tensile Strength4 | 1 | 1 | 1 | 1 | 1 | 1 |
Detailed Product Examination | 2 | 2 | 3 | 4 | 6 | 8 |
Retest Sample Size2 | - | - | 13 | 13 | 20 | 20 |
Final Lot Inspection: | ||||||
EVERY DEVICE IN THE LOT |
1 Samples must be selected from each lot of incoming material. The tests referenced in §§ 160.176-13(y)(1) through 160.176-13(y)(4) of this part prescribe the number of samples to select.
2 Samples selected for this test may not be the same samples selected for other tests.
3 If any sample fails the over-pressure test, the number of samples to be tested in the next lot produced must be at least 2% of the total number of lifejackets in the lot or 10 lifejackets, whichever is greater.
4 This test is required only when a new lot of materials is used and when a revised production process is used. However, the test must be run at least once every calendar quarter regardless of whether a new lot of materials or a revised process is started in that quarter.
Table 160.176-15B-Inspector's Sampling Plan
Number of samples per lot | ||||||
Lot size | ||||||
1-100 | 101-200 | 201-300 | 301-500 | 501-750 | 751-1000 | |
Tests: | ||||||
Over-pressure1 | 1 | 2 | 3 | 4 | 6 | 8 |
Air Retention | 1 | 2 | 3 | 4 | 6 | 8 |
Buoyancy & Inflation Media Retention | 1 | 2 | 3 | 4 | 6 | 8 |
Tensile Strength2 | 1 | 1 | 1 | 1 | 1 | 1 |
Waterproof marking | ||||||
SEE NOTE (3) FOR SAMPLING | ||||||
Detailed Product Examination | 2 | 2 | 2 | 3 | 3 | 3 |
Retest Sample Size1 | 10 | 10 | 13 | 13 | 20 | 20 |
Final Lot Inspection: | 20 | 32 | 50 | 60 | 70 | 80 |
1 Samples selected for this test may not be the same lifejackets selected for other tests.
2 This test may be omitted if the manufacturer has previously conducted it on the lot and the inspector has conducted the test on a previous lot during the same calendar quarter.
3 One sample of each means of marking on each type of fabric or finish used in lifejacket construction must be tested. This test is only required when a new lot of materials is used. However, the test must be run at least once every calendar quarter regardless of whether a new lot of materials is started in that quarter.
46 C.F.R. §160.176-15