Statutes, codes, and regulations
Indiana Administrative Code
Title 326 - AIR POLLUTION CONTROL DIVISIONArticle 8 - VOLATILE ORGANIC COMPOUND RULES
Rule 326 IAC 8-21 - Aerospace Manufacturing and Rework Operations
Section 326 IAC 8-21-3 - VOC emissions control requirements

326 Ind. Admin. Code 8-21-3

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Current through October 23, 2024
Section 326 IAC 8-21-3 - VOC emissions control requirements

Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11

Affected: IC 13-15; IC 13-17

Sec. 3.

(a) The owner or operator of a source that is subject to this rule shall not apply to aerospace vehicles or components any coatings, including any VOC containing materials added to the original coating supplied by the manufacturer, that contain VOC in excess of the limits specified as follows:

VOC Content Limit for Primers, Topcoats, and Chemical Milling Maskants (lbs/gallon)a

Coating Type Limit
Primer 2.9
Primer for general aviation rework 4.5
Exterior primer for large commercial aircraft (components or fully assembled) 5.4
Topcoat 3.5
Topcoat for general aviation rework 4.5
Self-priming topcoat 3.5
Self-priming topcoat for general aviation rework 4.5
Chemical milling maskant, type I 5.2
Chemical milling maskant, type II 1.3
aCoating limits expressed in terms of pounds of VOC per gallon of coating less water and less exempt solvent.

VOC Content Limits for Specialty Coatings (g/L)b

Coating Type Limit Coating Type Limit
Ablative coating 600 Flight test coatings:
Adhesion promoter 890 Missile or single use aircraft 420
Adhesive bonding primers: All other 840
Cured at 250°F or below 850 Fuel tank coating 720
Cured above 250°F 1030 High temperature coating 850
Adhesives: Insulation covering 740
Commercial interior adhesive 760 Intermediate release coating 750
Cyanoacrylate adhesive 1020 Lacquer 830
Fuel tank adhesive 620 Maskants:
Nonstructural adhesive 360 Bonding maskant 1230
Rocket motor bonding adhesive 890 Critical use and line sealer maskant 1020
Rubber based adhesive 850 Seal coat maskant 1230
Structural autoclavable adhesive 60 Metallized epoxy coating 740
Structural nonautoclavable adhesive 850 Mold release 780
Antichafe coating 660 Optical antireflective coating 750
Bearing coating 620 Part marking coating 850
Caulking and smoothing compounds 850 Pretreatment coating 780
Chemical agent resistant coating 550 Rain erosion resistant coating 850
Clear coating 720 Rocket motor nozzle coating 660
Commercial exterior aerodynamic structure primer 650 Scale inhibitor 880
Compatible substrate primer 780 Screen print ink 840
Corrosion prevention compound 710 Sealants:
Cryogenic flexible primer 645 Extrudable/rollable/brushable sealant 280
Dry lubricative material 880 Sprayable sealant 600
Cryoprotective coating 600 Silicone insulation material 850
Electric or radiation effect coating 800 Solid film lubricant 880
Electrostatic discharge and electromagnetic interference (EMI) coating 800 Specialized function coating 890
Elevated temperature Skydrol resistant commercial primer 740 Temporary protective coating 320
Epoxy polyamide topcoat 660 Thermal control coating 800
Fire resistant (interior) coating 800 Wet fastener installation coating 675
Flexible primer 640 Wing coating 850
bCoating limits expressed in terms of mass (grams) of VOC per volume (liters) of coating less water and less exempt solvent.

(b) The following coating applications are exempt from the VOC content limits listed in subsection (a):
(1) Touch-up, aerosol, and U.S. Department of Defense "classified" coatings.
(2) Coating of space vehicles.
(3) Facilities that use separate formulations in volumes of less than fifty (50) gallons per year subject to a maximum exemption of two hundred (200) gallons total for such formulations applied annually.
(c) The broad categories of primers, topcoats (including self priming topcoats), and chemical milling maskants (Type I or II) are not specialty coatings as listed in the table in subsection (a). The requirements do not apply to facilities that use separate formulations of primers, topcoats, and chemical milling maskants (Type I or II) in volumes of less than fifty (50) gallons per year, subject to a maximum exemption of two hundred (200) gallons total for such formulations applied annually.

326 IAC 8-21-3

Air Pollution Control Board; 326 IAC 8-21-3; filed Nov 3, 2009, 3:32 p.m.: 20091202-IR-326090222FRA