TB 43-0242
9-1. Respirator Authorized. Under some conditions
SECTION VII. WELDING CARC-PAINTED
you may need to wear a respirator. The most common
SURFACES
respirator used is NSN 4240-00022-2524. It's part of the
No. 1 Supplemental and No. 2 Common shop sets. It's
7-1. Welding is Out. Never weld or use a cutting torch
also authorized by Chapter 18 of CTA 50-909. Your gas
on CARC-painted material. Welding or cutting painted
mask is no substitute. It won't protect you from paint
surfaces releases toxic gases, vapors and metal fumes.
fumes.
7-2. Remove Paint. Before applying any heat, sand or
9-2. Training, Fitting and Testing. Your Preventive
grind off the paint down to bare metal on an area four
Medicine folks will fit you for a mask and be sure you
inches on either side of where you plan to apply heat. If
have the correct type.
the other side of the metal is painted, remove the paint
from it, too.
They will also teach you how to use it and to check for
leaks before each use.
SECTION VIII. PAINT REMOVAL
9-3. Cartridges not Available. You can't get the
8-1. Stripper. There are times you need to remove
cartridges or prefilters separately. When you've used up
CARC from a surface that can't be scratched or scored,
those that come with the kit, order a new respirator.
such as cannon mounts or aircraft surfaces. You can't
use sandblasting or sanding. Instead, use epoxy and
9-4. Before Use. Never alter or modify your respirator.
polyurethane paint remover.
Be sure you follow the manufacturer's instructions for
use and wear.
8-2. Stripper NSNs. Get the stripper with these NSNs:
Look for tears or other damage that would prevent a
Qty
NSN 8010-001
positive seal. When you first put the mask on, do the
Pt
142-9273
positive pressure and negative pressure tests called for
1 Gal
181-7568
in Para 2-7b(4) of TB Med 502. If you can't get a good
5 Gal
926-1488 5
seal, don't paint.
5 Gal
926-1489
9-5. Respirator Use. Use your respirator only in well-
8-3. Safety. Read the warning label on the stripper and
ventilated areas where plenty of oxygen is available.
take all the precautions called for. The Material Safety
Otherwise, you may pass out.
Data Sheet will have additional information. Your
Preventive Medicine folks can help, too.
Leave the area immediately if breathing becomes
difficult, if you get dizzy or if you taste or smell paint.
8-4. Waste Disposal. Be sure to check with your local
environmental office for guidance on disposing of the
9-6. Cartridge Changes. Replace the prefilter and the
used stripper.
cartridge in your mask at the first sign of paint odor
while you're wearing it. Unscrew the cartridge to replace
SECTION IX, RESPIRATOR CARE
it.
Be
sure
the
rubber
8
