E. Operators should also be aware of the fact that acids may deteriorate nonme-tallic materials such as fabrics, wood, leather, etc.
F. The FAA has required the removal of all lithium sulfur dioxide batteries
from all U.S. civil aircraft. This is due to the fact that many incidents
have been reported in which lithium sulfur dioxide batteries have burned or
vented violently. Some batteries have also leaked sulfur dioxide gas, which
combines with moisture to form extremely corrosive sulfurous acid.
2. Detection
A. Any discoloration on the surface should be suspected and investigated.
Black, white, yellow and brown are predominant chemical reaction precipi-tate colors. Precipitate colors depend on the acid and the material on which
the acid is spilled.
3. Personnel Protection
WARNING: ACIDS ACCIDENTLY SPILLED ON SKIN, CLOTHING OR OTHER MATERIAL SHOULD BE
FLOODED IMMEDIATELY WITH CLEAN WATER. IF EYES ARE INVOLVED, FLOOD WITH
LARGE AMOUNTS OF CLEAN WATER AND CONSULT A PHYSICIAN IMMEDIATELY.
A. Adequate protective clothing (rubber or plastic gloves, goggles, face
shields, aprons, boots, head gear, etc.) should be worn when handling or
working in acid contaminated areas.
B. Wash hands after using acid neutralizing treatment solutions and/or materi-als before eating or smoking.
C. Waste materials, solvents, chemical solutions, wiping rags, masking materi-als, etc., shall be collected and safely disposed of.
4. Isolation of Contaminated Area
A. On discovery of acid spills, steps should be taken to contain the contami-nated area. The following precautions are advised:
(1)Do not allow acid spills to spread to adjacent areas that will not be
cleaned.
Volume 1
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Page 1 OCT 01/01
CORROSION PREVENTION MANUAL
GENERAL INFORMATION CORROSION REMOVAL TECHNIQUES
PROCEDURE AFTER ACID SPILLS
(2)In battery areas, protection of equipment beneath using plastic sheets
is advised. If equipment is operating, venting should be maintained.
(3)Consider protecting uncontaminated areas by taping down protective mate-rial such as plastic sheets.
5. Acid Spillage Cleanup
A. If equipment is adjacent to the treatment area, use plastic sheets to cover
the equipment to prevent inadvertent splashing of acids or treatment fluids.
B. Wipe up excess fluids with cloth and discard cloth into plastic container
for disposal.
C. Neutralize the treatment area with a 20% sodium bicarbonate solution applied
with a brush or cloth swab. Particular attention should be given to faying
surface joints. Pressure application may be required to flush the joint
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