Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart JJJ > Appendix - Table 3 to Subpart JJJ of Part 63—Group 1 Storage Vessels at Existing Affected Sources Producing the Listed Thermoplastics

Regulations last checked for updates: May 17, 2024

Title 40 - Protection of Environment last revised: May 15, 2024

Appendix - Table 3 to Subpart JJJ of Part 63—Group 1 Storage Vessels at Existing Affected Sources Producing the Listed Thermoplastics

Thermoplastic	Chemical ^a	Vessel capacity (cubic meters)	Vapor pressure ^b (kilopascals)
ASA/AMSAN ^c	styrene/acrylonitrile mixture	≥3.78	≥0.47
	acrylonitrile	≥75.7	≥1.62
Polystyrene, continuous processes	all chemicals	<75.7	≥14.2
		≥75.7
			≥1.9
Nitrile ^c	acrylonitrile	≥13.25	≥1.8

^a Vessel capacity and vapor pressure criteria are specific to the listed chemical or to “all chemicals,” as indicated.

^b Maximum true vapor pressure of total organic HAP at storage temperature.

^c The applicability criteria in Table 2 of this subpart shall be used for chemicals not specifically listed in this table (i.e., Table 3).

[64 FR 11553, Mar. 9, 1999]

authority: 42 U.S.C. 7401

source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.