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(4) Observe the Following:
(a) Parts must be cleaned before being subjected to the inspection process.
(b) Plug or cap all tubes or holes in parts in the area being inspected with penetrant to prevent penetrant or other material becoming entrapped.
(c) Fluorescent-penetrants and developers used together in an inspection system should be products of one manufacturer, except when using solvent (non-aqueous) wet developer. It is permissible to use the approved solvent-wet developer, Tracer-Tech D499C with any product system.
Subtask 70-51-00-869-055
B. Equipment.
(1) Inspection booth or darkroom or black cloth hood (for remote locations) which prevents excessive admission of white light.
NOTE : Excessive white light will interfere with detection of a
____ rejectable size indication. A test part having a know defect can be used to evaluate effectiveness of white light shielding.
(2) Compressed air supply for drying parts. Air supply must have filters to remove oil and moisture which can contaminate parts or inspection materials.
(3) Ultraviolet lamp to detect fluorescent indications.
CAUTION : THE USE OF HIGH INTENSITY (125 WATT) ULTRAVIOLET BULBS
_______ WHICH EMIT AN EXCESS AMOUNT OF WHITE LIGHT WILL AFFECT THE SENSITIVITY OF THE FLUORESCENT-PENETRANT PROCESS. USE ONLY BULBS CERTIFIED BY THE NDT ORIGINAL EQUIPMENT MANUFACTURER AS HAVING PASSED THEIR IN-HOUSE INSPECTION. IN ADDITION, THESE HIGH INTENSITY BULBS SHOULD BE PERIODICALLY TESTED FOR WHITE LIGHT EMISSION PER STANDARD PRACTICE 70-00-06.
(a) The ultraviolet (black) light source used for the detection of indications shall have an intensity no less than 800 microwatts/cm2 measured at a distance of 15 in. (380 mm). In addition, high intensity self filtered 125 watt bulbs shall be tested for white light emission per 70-00-06 to verify that white light emission is within acceptable limits.
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(4) White light lamp for visual inspection of parts.
(5) Time piece for timing operations.
(6) Tools for inspection personnel. Tools should consist of at least the following:
(a) Tree-power and 10-power magnifying lenses.
(7) Assortment of adjustable mirrors.
(8) Gages to measures size of fluorescent indications.
(9) Cotton swabs or small fine-hair art brush to apply solvent for evaluating questionable indications.
Subtask 70-51-00-869-056
C. Materials.
NOTE : All materials are used at ambient temperature. The following
____ materials may be used of this class of inspection.
(1) Penetrant inspection systems
-------------------------------------------------------------------------------
PENETRANT WATER CP DRY POWDER CP NON-CP
INSPECTION SOLUBLE No. DEVELOPERS No. AQUEOUS No.
SYSTEMS PENETRANTS WET
DEVELOPERS -------------------------------------------------------------------------------ARDROX 970P23 CP3001 9D4A CP3010 9D1/B CP3008
970P24 CP3002
970P25 CP3003
R 985P12 CP3004 BRITEMOR 4455 CP3400
R PD3 CP3401
R PD4 CP3406
Fluoro-WP100 CP2153 NAD-NF CP2146 check WP1B CP2149 WP170LS CP3201
MET-L-CHECK FP91B CP3310 D72A CP3317 D70 CP3318 FP92B CP3311 D701 CP3319 FP903 CP3312
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E E Aug 01/04 E E ECES E -------------------------------------------------------------------------------PENETRANT WATER CP DRY POWDER CP NON-CP INSPECTION SOLUBLE No. DEVELOPERS No. AQUEOUS No. SYSTEMS PENETRANTS WET
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DEVELOPERS -------------------------------------------------------------------------------SHERWIN HM3A CP3303 D90G CP3307 D100 CP3308
HM220 CP3304
HM440 CP3305
ZYGLO ZL17D CP3100 ZP4A CP3102 ZP9E CP3106 ZL60C CP3101
(2) Solvents
CAUTION : TITANIUM PARTS REQUIRE THE USE OF NON-HALOGENATED SOLVENTS.
_______
-------------------------------------------------------------------------------MATERIAL SOLUTION/PRODUCT NUMBER -------------------------------------------------------------------------------
1. Isopropyl Alcohol (halogen-free) CP1041
2. 1 Methyl-Ethyl-Ketone (halogen-free) CP1040 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM STANDARD PRACTICES - ENGINES(21)
