4. Isolation of Contaminated Area
A. On discovery of alkaline spills, steps should be taken to contain the con-taminated area. The following precautions are advised:
(1)Do not allow alkaline spills to spread to adjacent areas that will not
be cleaned.
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CORROSION PREVENTION MANUAL
CORROSION REMOVAL TECHNIQUES
PROCEDURE AFTER ALKALINE 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. Alkaline Spillage Cleanup
A. If equipment is adjacent to the treatment area, use plastic sheets to cover
the equipment to prevent splashing of alkalines 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 5% acetic acid solution or full
strength household vinegar applied with a brush or cloth swab.
D. Continue to apply the solution until all chemical reaction ceases. Then
allow the solution to remain on the surface for an additional 5 minutes.
Particular attention should be given to faying surface joints. Pressure
application may be necessary to flush the joint thoroughly.
E. Remove the neutalized mixture with a mop or sponge.
F. Rinse the affected area with generous quantities of clean water. occasion-ally agitate the surface with a soft brush.
G. Neutralization of the alkaline fluid should be determined with litmus paper.
H. Wipe dry with clean cloths.
I. After thoroughly drying, repair or replace damaged finishes if at all possi-ble. Refer to 20-50-00 and 20-60-00 for protective finish systems.
J. Apply BMS 3-23 water displacing corrosion inhibiting compound over the
entire area.
NOTE:For details of application of BMS 3-23, refer to 20-60-00.
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CORROSION PREVENTION MANUAL
GENERAL INFORMATION CORROSION REMOVAL TECHNIQUES
PROCEDURE AFTER ACID SPILLS
1. General
A. Acid spills, unless neutralized, can rapidly corrode metallic structure.
B. The primary source of alkaline spillage is in the battery compartments where
acid electrolytes may overflow during charging or spill during battery ser-vicing.
C. Acid-based corrosion removal compounds and airplane cleaners are used quite
extensively during routine maintenance and repair. Spills do occur at times
and thorough neutralizing and/or rinsing is necessary to preclude corrosion
damage.
D. Containers of acid concentrates or acid based chemicals may be part of a
cargo and may be broken during loading or unloading. Spillage from such
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