Appendix III to Part 92 - Smoke Standards for Non-Normalized Measurements

Appendix III to Part 92 - Smoke Standards for Non-Normalized Measurements

Table III-1 - Equivalent Smoke Standards for Non-Normalized Measurements

Path length		Standards
If the path length is:		Then the opacity may not exceed:
cm	inches	Peak		Steady-State
		3-sec	30-sec	Tier 0	Tier 1	Tier 2
10.0-19.9	3.94-7.86	7	5	4	3	2
20.0-29.9	7.87-11.80	13	10	7	6	4
30.0-39.9	11.81-15.74	19	14	10	8	6
40.0-49.9	15.75-19.68	24	18	13	11	9
50.0-59.9	19.69-23.61	29	23	16	13	11
60.0-69.9	23.62-27.55	34	26	19	16	13
70.0-79.9	27.56-31.49	38	30	22	18	14
80.0-89.9	31.50-35.42	43	34	25	21	16
90.0-99.9	35.43-39.36	46	37	27	23	18
100.0-109.9	39.37-43.30	50	40	30	25	20
110.0-119.9	43.31-47.23	53	43	32	27	22
120.0-129.9	47.24-51.17	56	46	35	29	23
130.0-139.9	51.18-55.11	59	49	37	31	25
140.0-149.9	55.12-59.05	62	51	39	33	27
150.0-159.9	59.06-62.98	65	54	41	35	28
160.0-169.9	62.99-66.92	67	56	43	37	30
170.0-179.9	66.93-70.86	69	58	45	39	32
180.0-189.9	70.87-74.79	71	60	47	40	33
190.0-199.9	74.80-78.73	73	62	49	42	35
≥200	≥78.74	75	64	51	44	36