DOC AIRBUS | AMM A320FFluorescent-Penetrant Inspection-Portable Water-Washable [CFMI]
TASK 70-51-00-230-001-A
Fluorescent-Penetrant Inspection-Portable Water-Washable
Self explanatory
2. Job Set-up
Subtask 70-51-00-869-050-A ** ON A/C NOT FOR ALL
Subtask 70-51-00-230-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:38:18 UTC
Fluorescent-Penetrant Inspection-Portable Water-Washable
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up
Subtask 70-51-00-869-050-A ** ON A/C NOT FOR ALL
A. Fluorescent-Penetrant Inspection - General
(1) This is water-washable fluorescent-penetrant inspection process intended for inspections at remote locations. Portable fluorescent-penetrant inspection is a localized process, limited to small areas or spot inspection of specific areas of parts. It is not intended for normal inspection. It is convenient to use for inspection of welded or other localized repair areas. The penetrant is applied only to a local area that needs to be inspected.
(2) If visible non-fluorescent color dye penetrant has been used on parts which are to be subsequently inspected with fluorescent penetrants, the contamination by the dye may prevent reliable fluorescent-penetrant inspection. Any color dye indications evident by white light visual inspection shall be considered valid indications even if not detectable by ultraviolet light.
(3) Titanium alloy parts are subject to stress corrosion cracking when residues of halogen containing compounds remain on a part that is subsequently subjected to elevated temperatures typical or welding, heat treating, or engine operation. These parts must be thoroughly cleaned with halogen-free compounds after exposure to any halogen containing compound to prevent the cracking and possible failure of parts. When using water for processing parts made of titanium or titanium alloy, de-ionized water must be used.
(4) Observe the following.
(5) Parts must be cleaned before being subjected to the inspection process.
(6) Plug or cap all tubes or holes in parts in the area being inspected with penetrant to prevent penetrant or other material becoming entrapped.
(7) 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 70-51-00-869-051-A ** ON A/C NOT FOR ALL (1) This is water-washable fluorescent-penetrant inspection process intended for inspections at remote locations. Portable fluorescent-penetrant inspection is a localized process, limited to small areas or spot inspection of specific areas of parts. It is not intended for normal inspection. It is convenient to use for inspection of welded or other localized repair areas. The penetrant is applied only to a local area that needs to be inspected.
(2) If visible non-fluorescent color dye penetrant has been used on parts which are to be subsequently inspected with fluorescent penetrants, the contamination by the dye may prevent reliable fluorescent-penetrant inspection. Any color dye indications evident by white light visual inspection shall be considered valid indications even if not detectable by ultraviolet light.
(3) Titanium alloy parts are subject to stress corrosion cracking when residues of halogen containing compounds remain on a part that is subsequently subjected to elevated temperatures typical or welding, heat treating, or engine operation. These parts must be thoroughly cleaned with halogen-free compounds after exposure to any halogen containing compound to prevent the cracking and possible failure of parts. When using water for processing parts made of titanium or titanium alloy, de-ionized water must be used.
(4) Observe the following.
(5) Parts must be cleaned before being subjected to the inspection process.
(6) Plug or cap all tubes or holes in parts in the area being inspected with penetrant to prevent penetrant or other material becoming entrapped.
(7) 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.
B. Equipment
(1) Inspection booth or darkroom or black cloth hood (for remote locations) which prevents excessive admission of white light.
(3) Ultraviolet lamp to detect fluorescent indications:
(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) Three-power and 10-power magnifying lenses.
(b) Assortment of adjustable mirrors.
(c) Gages to measures size of fluorescent indications.
(d) Cotton swabs or small fine-hair art brush to apply solvent for evaluating questionable indications.
Subtask 70-51-00-869-052-A ** ON A/C NOT FOR ALL (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 CFM STANDARD PRACTICES MANUAL 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). (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) Three-power and 10-power magnifying lenses.
(b) Assortment of adjustable mirrors.
(c) Gages to measures size of fluorescent indications.
(d) Cotton swabs or small fine-hair art brush to apply solvent for evaluating questionable indications.
C. Materials
3. ProcedureNOTE: All materials are used at ambient temperature. The following materials may be used of this class of inspection.
(1) Penetrant inspection systems | PENETRANT INSPECTION SYSTEMS | WATER SOLUBLE PENETRANTS | CP No. | DRY POWDER DEVELOPERS | CP No. | NON- AQUEOUS WET DEVELOPERS | CP No. |
|---|---|---|---|---|---|---|
| ARDROX | 970P23 970P24 970P25 985P12 | CP3001 CP3002 CP3003 CP3004 | 9D4A | CP3010 | 9D1/B | CP3008 |
| BRITEMOR | 4455 | CP3400 | PD3 PD4 | CP3401 CP3406 | | |
| Fluoro- check | WP100 WP1B WP170LS | CP2153 CP2149 CP3201 | | | NAD-NF | CP2146 |
| MET-L-CHECK | FP91B FP92B FP903 | CP3310 CP3311 CP3312 | D72A | CP3317 | D70 D701 | CP3318 CP3319 |
| SHERWIN | HM3A HM220 HM440 | CP3303 CP3304 CP3305 | D90G | CP3307 | D100 | CP3308 |
| ZYGLO | ZL17D ZL60C/D | CP3100 CP3101 | ZP4A | CP3102 | ZP9E/F | CP3106 |
CAUTION:
TITANIUM PARTS REQUIRE THE USE OF NON-HALOGENATED SOLVENTS.
CAUTION:
TITANIUM PARTS REQUIRE THE USE OF NON-HALOGENATED SOLVENTS.
(2) Solvents | MATERIAL | SOLUTION/PRODUCT NUMBER |
|---|---|
| 1.Isopropyl Alcohol (halogen-free) | CP1041 |
| 2.1 Methyl-Ethyl-Ketone | CP1040 |
| 3.Acetone (halogen-free) | CP1039
|
Subtask 70-51-00-230-050-A ** ON A/C NOT FOR ALL
A. Fluorescent-Penetrant Inspection - Procedure
(b) Allow 20 to 60 minutes for penetration.
(2) Removal of excess penetrant:
(a) Remove excess penetrant by wiping with a clean dry cloth.
(b) Remove background fluorescence by wiping with a clean cloth dampened with water or solvent.
(c) Observe part under ultraviolet light to make sure excess penetrant has been removed.
(d) If excess background fluorescence persists, spray rinse using water from a squeeze bottle.
(3) Application of Developer.
(4) Inspection of Parts:
(b) Inspect to limits specified for the parts.
(c) Inspect questionable indications as follows:
1 Wipe area once with solvent listed in paragraph 3, using a cotton swab or fine-hair art brush.
2 Apply developer to suspected area after solvent has dried.
3 Inspect under ultraviolet light. Indications that reappear within 2 minutes shall be considered as valid indications.
4 If indications do not reappear, inspect part under white light using a 10-power magnifying lens.
(d) Identify location of defects using an approved marking method.
(5) Cleaning of Parts after Inspection:
(b) Removal of penetrant residue:
1 Remove penetrant residue by spraying or by soaking in solvent listed in paragraph 3.C.(2)
(c) Make sure that all internal passages and recesses are completely cleaned and dry. Blow out passages and recesses with dry air.
Subtask 70-51-00-869-053-A ** ON A/C NOT FOR ALL NOTE: Parts must be cleaned before their inspection process. Plug or cap tubes and holes in the area to be inspected to prevent inspection materials from being entrapped.
(1) Application of Penetrant: WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply penetrant by spraying or brushing. (b) Allow 20 to 60 minutes for penetration.
(2) Removal of excess penetrant:
(a) Remove excess penetrant by wiping with a clean dry cloth.
(b) Remove background fluorescence by wiping with a clean cloth dampened with water or solvent.
(c) Observe part under ultraviolet light to make sure excess penetrant has been removed.
(d) If excess background fluorescence persists, spray rinse using water from a squeeze bottle.
NOTE: Care must be taken to apply minimum amount of water because excess water will remove penetrant indications.
(e) Alternate: Remove excess penetrant with a hydrophilic remover provided it belongs to the same family as the penetrant used. Do not exceed 90 seconds contact time. If remover is applied manually, do not scrub the suface of the part with the applicator. Use applicator only to deliver fluid to the part surface. (3) Application of Developer.
WARNING:
WEAR THE CORRECT PROTECTIVE EQUIPMENT. VAPORS CAN CAUSE YOU INJURY.
(a) Apply developper by spray only to a dry part at ambient temperature. Apply a fine thin coating by holding spray nozzle about 8-10 inches (200-250 mm) from part surface. Normally 2 passes are adequate. Coverage should be uniform and a metallic background should be visible through the developer. NOTE: When using aerosol container, follow the manufacturer's directions.
(b) Allow 10 minutes for developer to absorb penetrant. (4) Inspection of Parts:
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 CFM STANDARD PRACTICES MANUAL 70-00-06.
(a) Direct ultraviolet light on part while in inspection booth or darkroom or under a black cloth hood. (b) Inspect to limits specified for the parts.
(c) Inspect questionable indications as follows:
1 Wipe area once with solvent listed in paragraph 3, using a cotton swab or fine-hair art brush.
2 Apply developer to suspected area after solvent has dried.
3 Inspect under ultraviolet light. Indications that reappear within 2 minutes shall be considered as valid indications.
4 If indications do not reappear, inspect part under white light using a 10-power magnifying lens.
(d) Identify location of defects using an approved marking method.
(5) Cleaning of Parts after Inspection:
CAUTION:
ALL RESIDUAL PENETRANTS AND DEVELOPER MATERIAL MUST BE REMOVED FROM PARTS AS SOON AS POSSIBLE. UNREMOVED MATERIAL CAN CAUSE SEVERE CORROSION OF PARTS AT ELEVATED TEMPERATURES.
WHEN CLEANING PARTS MADE OF TITANIUM OR TITANIUM ALLOYS WITH SOLVENT, USE ONLY SOLVENTS THAT DO NOT CONTAIN HALOGENS.
WHEN CLEANING PARTS MADE OF TITANIUM OR TITANIUM ALLOYS WITH WATER, USE ONLY DEIONIZED WATER.
(a) Remove developer and penetrant by water spray washing or scrubbing the part with brush and water. (b) Removal of penetrant residue:
1 Remove penetrant residue by spraying or by soaking in solvent listed in paragraph 3.C.(2)
(c) Make sure that all internal passages and recesses are completely cleaned and dry. Blow out passages and recesses with dry air.
B. Quantity Assurance
(1) Check part under ultraviolet light to make sure all penetrants and developer materials have been removed.
(2) Assure that the residues of processing compounds are completely removed from titanium and titanium alloy parts.
(1) Check part under ultraviolet light to make sure all penetrants and developer materials have been removed.
(2) Assure that the residues of processing compounds are completely removed from titanium and titanium alloy parts.