SECTION VII. WELDING CARC-PAINTED SURFACES

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

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.

sure

the

rubber