Appendix I to Part 204

Appendix I - 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: