Indiana Administrative Code
Title 326 - AIR POLLUTION CONTROL DIVISION
Article 8 - VOLATILE ORGANIC COMPOUND RULES
Rule 21 - Aerospace Manufacturing and Rework Operations
Section 21-4 - Application equipment
Universal Citation: 326 IN Admin Code 21-4
Current through March 20, 2024
Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11
Affected: IC 13-15; IC 13-17
Sec. 4.
(a) The owner or operator of a source that is subject to this rule shall use one (1) or more of the following application techniques in applying any primer or topcoat to aerospace vehicles or components:
(1) Flow or
curtain coat.
(2) Dip
coat.
(3) Roll coating.
(4) Brush coating.
(5) Cotton tipped swab application.
(6) Electrodeposition coating.
(7) High volume low pressure (HVLP)
spraying.
(8) Electrostatic
spray.
(9) Other coating
application methods that achieve emission reductions equivalent to HVLP or
electrostatic spray application methods.
(b) The following situations are exempt from application equipment requirements listed in subsection (a):
(1) Any situation that normally requires the
use of an airbrush or an extension on the spray gun to properly reach limited
access spaces.
(2) The application
of specialty coatings.
(3) The
application of coatings that:
(A) contain
fillers that adversely affect atomization with HVLP spray guns; and
(B) the permitting agency has determined
cannot be applied by any of the application methods specified in subsection
(a).
(4) The application
of coatings that:
(A) normally have a dried
film thickness of less than thirteen ten-thousandths (0.0013) centimeter (five
ten-thousandths (0.0005) inch); and
(B) the permitting agency has determined
cannot be applied by any of the application methods specified in subsection
(a).
(5) The use of
airbrush application methods for stenciling, lettering, and other
identification markings.
(6) The
use of handheld spray can application methods.
(7) Touch-up and repair operations.
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