(9)
Explosionproof centrifugal exhaust fan with 125-150 cubic feet per minute capacity and approximately 75 feet of 3-inch diameter flexible suction hose plus sufficient delivery hose to carry exhausted air outside hangar or work area (Rhine Air, Inc., 10744 Prospect Avenue, Suite A, Santee, CA 92071)
WARNING: MAKE SURE THE CAPACITY OF THE EXHAUST FAN IS MORE THAN THE CAPACITY OF THE AIR BLOWER. THIS WILL MAKE SURE THERE IS A GOOD FLOW OF AIR. THE CORROSION RESISTANT FINISH IS A POISONOUS AND FLAMMABLE COMPOUND WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(10)
Full face supplied air type respirator, U.S. Bureau of Mines approved
(11)
Neoprene or rubber gloves
(12)
Alodine application equipment
(a)
Alodine 600 powder - MIL-C-5541 (SRM 51-10-2)
(b)
Distilled water - 1 gallon containers
(c)
Stainless steel container
(d)
Brush, swab, sprayer, blotting paper or cellulose sponge for application
(13)
Corrosion resistant finish for integral fuel tanks
(a) BMS 10-20, Type II (preferred) (Ref 20-30-41)
NOTE: BMS 10-20, Type II is mutually compatible with preferred fuel tank sealant BMS 5-26 Type II
1) 454-4-1, Bostik West
(b) MIL-C-27725 (Ref 20-30-41)
CAUTION: USE MIL-C-27725 FINISH MATERIAL ONLY AS A TOPCOAT.
1) 823-011 or 823-730, DeSoto Chemical Coatings, Inc. 2) PR-1560M, PR-1560MC, PR-1560MK, Products Research Co.
(c) Zinc rich epoxy primer
1) base, 463-6-28, Bostik
2) catalyst, X-344, Bostik
3) thinner, TL-52, Bostik
(14)
Vacuum cleaner, industrial type, pneumatically powered, with attachments for cleaning fuel tank interior (ATI Industries, 2425 West Vineyard Ave., Escondido, CA 92029)
(15)
Volume measuring containers, with graduations for volume measurement of finish material and curing agents
(16)
Balance scale with set of graduated weights accurate to ± 0.4 ounce or ± 10 grams, for weight measurement of finish material and curing agents
(17)
Cans with lids - For temporary storage of mixed finish material
(18)
Labels - For identifying mixed batches of finish material placed in item (15) cans
(19)
Spatulas - For mixing small batches of finish material
(20)
Shaker - Red Devil multidirectional
(21)
Masking tape
(22)
Paint brushes - If used for finish application
(23)
Spray Equipment - DeVilbiss Model MBC or JGA, The DeVilbiss Co., 300 Phillips Ave., Toledo, Ohio (Recommended for large area application of corrosion resistant finish).
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28-11-0 Page 704 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/98
C. Prepare for Application of Corrosion Resistant Finish
(1)
Defuel and purge applicable tank (Ref 28-23-0, 28-10-0 MP).
WARNING: OBSERVE ALL PRECAUTIONS FOR PURGING AND FUEL TANK ENTRY.
(2)
Remove fuel tank access panels to gain access to fuel tank (Ref 28-11-11, 28-11-31 R/I, as applicable).
(3)
Set up air blower and flexible hose to ventilate work area inside wing. Use exhaust fan and hoses to convey exhaust air from wing to unoccupied space outside work area or hangar. Connect hoses and nozzles to electrical ground.
WARNING: PROVIDE ELECTRICAL GROUND FOR VENTILATION EQUIPMENT IN OR NEAR OPEN FUEL TANK OR SPARK MAY SET OFF FIRE OR EXPLOSION.
(4)
Examine internal tank surfaces for evidence of fungus (mildew) and corrosion. If found, clean tank thoroughly (Ref par. 2., this section).
NOTE: A slimy, black coating on tank inner surfaces, soon after defueling, indicates fungus contamination. After continued drying, coating becomes solid and may turn a light brown color.
(5)
Remove all loose finish by scraping with wood or plastic scrapers and sanding with abrasive pad, aluminum oxide abrasive paper or abrasive discs. Remove any sealant as necessary to allow loose paint removal.
(a) Using pressure sensitive tape, check surfaces adjacent to loose finish areas for loose finish. Also check any other questionable areas with tape. 1) Apply a strip of pressure sensitive tape to test surface. Press tape down
uniformly and firmly. 2) Yank the tape off surface in one abrupt motion perpendicular to surface. 3) Examine surface and tape for any evidence of finish removal or blistering. If
found, remove all affected finish per par. (5) above.
(6)
Abrade all finished areas, which are to be recoated, with wet abrasive paper, 400 grit. Feather any adjacent painted areas using wet abrasive paper, 400 grit.
(7)
Wipe surfaces clean of all residue using cloths soaked in cleaning solvent. Wipe dry with other (dry) cleaning cloths.
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