40 CFR Appendix I to Part 204, Appendix I to Part 204

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Appendix I to Part 204

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 number Rejection number
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 batches Cumulative number batches Sequence inspection criteria
Acceptance number Rejection number
A 2 2 1 ( 1)
2 4 2 4
2 6 3 5
2 8 4 5
B 2 2 0 ( 1)
2 4 1 4
2 6 2 5
2 8 3 5
2 10 4 6
2 12 5 6
C 2 2 ( 2) 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 rejection not permitted for this number of batches.

2 Batch sequence acceptance not permitted for this number of batches.

Table IV - Recommended Format for Portable Air Compressor Noise Data Sheet

Test report number:
Subject:
Manufacturer: Model: Serial No.:
Rated speed: Rpm: Rated capacity: cfm (m 3/in).
Configuration identification: Category identification:
Portable air compressor identification No.: Build date:
Test conditions:
Manufacturer's test site identification and location:
Reflecting plane composition:
Operating speed as tested:
Beginning of test rpm
End of test rpm
Air pressure supplied: psi (kg/cm 2) Ambient wind speed___mph (km/hr)
Actual flow rate: cfm (m 3/min.) Atmospheric pressure___psi (kg/cm 2)
Temperature: °F (°C)
Instrumentation:
Microphone Manufacturer: Model No.: Serial No.:
Sound Level Meter Manufacturer: Model No.: Serial No.:
Calibrator Manufacturer: Model No.: Serial No.:
Other and Manufacturer: Model No.: Serial No.:
Data:
Sound levels (decibels) Background sound level at location 1 (decibels) Location
1 2 3 4 5 Average sound level (decibels)
A-Weighted
Tested by: Date:
Reported by: Date:
Supervisory personnel: Title:
Title:

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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