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AFS-640

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AFS-640 ( afs-640 )

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9/8/98 AC 43.13-1B SECTION 6. CORROSION REMOVAL PROCEDURES 6-89. GENERAL. General safety precau­ tions for handling materials with hazardous physical properties are outlined in the follow­ ing paragraphs. They also address emergency procedures for immediate treatment of person­ nel who have inadvertently come into contact with harmful materials. All personnel respon­ sible for using or handling hazardous materials should be thoroughly familiar with the infor­ mation in the following paragraphs. 6-90. SAFETY PRECAUTIONS. a. Chemical. When required to use or handle solvents, special cleaners, paint strip­ pers (strong alkalies and acids), etchants (cor­ rosion removers containing acids), or surface activation material (Alodine 1200), observe the following safety precautions: (1) Avoid prolonged breathing of sol­ vent or acid vapors. (2) Never add water to acid. Always add acid to water. (3) Mix all chemicals per the manufac­ turer’s instructions. (4) Clean water for emergency use should be available in the immediate work area before starting work. (5) Avoid prolonged or repeated contact with the skin of solvents, cleaners, etchants (acid), or conversion coating material (Alodine solution). Rubber or plastic gloves should be worn. Goggles or plastic face shields and suit­ able protective clothing should be worn when cleaning, stripping, etching, or conver­ sion coating overhead surfaces. (6) When mixing alkalies with water or other substance, use containers that are made to withstand heat generated by this process. (7) Wash any paint stripper, etchant, or conversion coating material immediately from body, skin, or clothing. (8) Materials splashed into the eyes should be promptly flushed out with water, and medical aid obtained immediately. (9) Do not eat or keep food in areas where poisons may be absorbed. Always wash hands before eating or smoking. (10) Verify that the area within 50 feet of any cleaning or treating operations where low flash point (140 °F or below) materials are being used, is clear and remains clear of all potential ignition sources. (11) Suitable fire-extinguishing equip­ ment should be available to the clean­ ing/treating area. (12) Equipment should be effectively grounded where any flammable materials are being used. (13) If materials (acid, alkali, paint re­ mover, or conversion coatings) are spilled on equipment and/or tools, treat immediately by rinsing with clean water, if possible, and /or neutralizing acids with baking soda and alka­ lies with a weak (5 percent) solution of acetic acid in water. Par 6-89 Page 6-17

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