Table I-Sample Size Code Letters
Batch size | Code letter |
4 to 8 | A. |
9 to 15 | B. |
16 to 25 | C. |
26 and larger | D. |
Table II-Sampling Plans for Inspecting Batches
Sample size code letter | Test sample | Test sample size | Cumulative test sample size | Batch inspection criteria | |
Acceptance No. | Rejection No. | ||||
A | 1st | 4 | 4 | 0 | 1 |
B | 1st | 3 | 3 | 0 | 1 |
C | 1st | 3 | 3 | 0 | 2 |
2d | 3 | 6 | 1 | 2 | |
D | 1st | 2 | 2 | (1) | 2 |
2d | 2 | 4 | (1) | 2 | |
3d | 2 | 6 | 0 | 2 | |
4th | 2 | 8 | 0 | 3 | |
5th | 2 | 10 | 1 | 3 | |
6th | 2 | 12 | 1 | 3 | |
7th | 2 | 14 | 2 | 3 |
1 Batch acceptance not permitted at this sample size.
Table III-Batch Sequence Plans
Sample size code letter | Number of batches | Cumulative number of batches | Sequence inspection criteria | |
Acceptance No. | Rejection No. | |||
A | 2 | 2 | 1 | (2) |
2 | 4 | 2 | 4 | |
2 | 6 | 3 | 5 | |
2 | 8 | 4 | 5 | |
B | 2 | 2 | 0 | (2) |
2 | 4 | 1 | 4 | |
2 | 6 | 2 | 5 | |
2 | 8 | 3 | 5 | |
2 | 10 | 4 | 6 | |
2 | 12 | 5 | 6 | |
C | 2 | 2 | (1) | 2 |
2 | 4 | 0 | 2 | |
2 | 6 | 0 | 3 | |
2 | 8 | 1 | 3 | |
2 | 10 | 2 | 4 | |
2 | 12 | 3 | 4 | |
D | 2 | 2 | 0 | 2 |
2 | 4 | 1 | 3 | |
2 | 6 | 2 | 4 | |
2 | 8 | 3 | 4 |
1 Batch sequence acceptance not permitted for this number of batches.
2 Batch sequence rejection not permitted for this number of batches.
Table IV-Recommended Format for Vehicle Noise Data Sheet
Test Report Number: | Manufacturer: | ||
VEHICLE: | |||
Trade Name: | VIN: | ||
Model Year: | Other Reference No: | ||
Configuration Identification: | Category Identification: | ||
Test Site Identification and Location: | |||
INSTRUMENTATION: | |||
Microphone Manufacturer: | Model No: | Serial No: | |
Sound Level Manufacturer: | Model No: | Serial No: | |
Calibrator Manufacturer: | Model No: | Serial No: | |
Other and Manufacturer: | Model No: | Serial No: | |
TEST DATA: | |||
Approach Gear: | Date of Test: | ||
Approach RPM: | Temp: | Wind: | |
Acceleration Test: | |||
Deceleration Test: |
Acceleration Test
Run No. | ||||||
1 | 2 | 3 | 4 | 5 | ||
dBA | Left | |||||
Right | ||||||
Highest RPM attained in End Zone | ||||||
Calculated Sound Pressure | dBA | |||||
Deceleration Test with Exhaust Brake Applied | ||||||
dBA | Left | |||||
Right | ||||||
Calculated Sound Pressure | dBA | |||||
TEST Personnel: | ||||||
(Name) | ||||||
Recorded By: | Date:......... | |||||
(Signature) | ||||||
Supervisor: | Title:......... | |||||
(Signature) |
40 C.F.R. 205 app I to Subpart B of Part 205