PT - LEVEL 1 PENETRANT TESTING
PUBLIC CONCERNED
All Non Destructive Testing agents involved with a certification level 1. During the examination of level 1 FPI testing certification , the questionnaires relating to the specific part relate more particularly to procedures used in the Aerospace industry.
OPERATING PROCEDURES
- Equipment used for different penetrant inspection process
- Water washable penetrant process,
- Post-emulsified penetrant process
- Penetrant processing (in house and on site)
- Spraying (pneumatic, electrostatic,…)
- Immersion
- Swabbing
- Penetrant sensitivity level according to nature of the parts to be inspected (forging, casting, etc…)
TYPE OF DEFECTS
These are specific to each manufacturing phase and use
- in-service defects.
- form, position, orientation, density, etc…
PRODUCTS/PARTS
- Melting method, transformation, and machining
PENETRANT
- Type
- Physicochemical characteristics
- Application modes
- Sensitivity levels
- Choice according to the nature of the defects to be detected
- Sensitivity impact consequences of the test temperature
- Corrosion tests
- Pollution, contamination
EMULSIFIER
- Method
- Physicochemical Characteristics
- Concentration
- Processing parameters when used
- Importance of the preliminary wash
DEVELOPPER
- Form
- Physicochemical Characteristics
- Application modes
- Contamination
INSPECTION CONDITION
- Parts Handling
- Inspection room requirements
- Sizing tools
- Inspection equipment
- Defects evaluation and interpretation
- Sanction
WASHING
- Purpose
- Washing conditions (temperature, pressure, distance)
UV LIGHT
- Characteristics
- Conditions of use
RAISE OF DOUBT
- Actions to be undertaken in case of doubt (wipe off technique)
- Complementary method (according to material, the defects and the parts geometry)
QUALITY
- Installations approval
- Penetrant system performance
- Inspection instructions
- Specifications
- Health and safety
- Waste water processing
CALIBRATION
- Calibration standards
- Installation in process checking equipments
PARTS PREPARATION BEFORE INSPECTION (machined, In service, rough)
- Degreasing (solvents, alkaline detergents)
- Stripping (paint removal)
- Etching (pre-penetrant etching)
- Non recommended processing (grit blasting, shot peening....)
PT - LEVEL 2 PENETRANT TESTING
PUBLIC CONCERNED
All Non Destructive Testing agents involved with a certification level 2. During the examination of level 2 FPI testing certification , the questionnaires relating to the specific part relate more particularly to procedures used in the Aerospace industry.
PROCEDURES
- Equipment used with the various techniques for penetrant inspection
- Water washable penetrant process,
- Post-emulsified penetrant proce
- Penetrant processing (in house and on site)
- Spraying (pneumatic and electrostatic,…)
- Immersion
- Swabbing
- Penetrant sensitivity level according to nature of the parts to be inspected (forging, casting, etc…)
TYPES OF DEFECTS
These are specific to each manufacturing phase and use
- in-service defects.
- form, position, orientation, density, etc…
PRODUCTS/PARTS
- Melting method, transformation, and machining
PENETRANT
- Type
- Physicochemical characteristics
- Application modes
- Sensitivity levels
- Choice according to the nature of the defects to be detected
- Sensitivity impact consequences of the test temperature
- Corrosion tests
- Pollution, contamination
EMULSIFIER
- Method
- Physicochemical Characteristics
- Concentration
- Processing parameters when used
- Importance of the preliminary wash
DEVELOPPER
- Form
- Physicochemical Characteristics
- Application modes
- Contamination
INSPECTION CONDITION
- Parts Handling
- Inspection room requirements
- Sizing tools
- Inspection equipment
- Defects evaluation and interpretation
- Sanction
SPECIFIC INSPECTION
- Penetrant testing under static or dynamic deformation
INSPECTION INSTRUCTION
- General knowledge of instruction and inspection coast implementation
- Writing operating instruction
- Machining operating instruction
- Inspection Instruction
- Assembling operating instruction
- Maintenance operating instruction
WASHING
- Purpose
- Washing conditions (temperature, pressure, distance)
UV LIGHT
- Characteristics
- Conditions of use
RAISE OF DOUBT
- Actions to be undertaken in case of doubt (wipe off technique)
- Complementary method (according to material, the defects and the parts geometry)
QUALITY
- Installations approval
- Penetrant system performance
- Inspection instructions
- Specifications
- Health and safety
- Waste water processing
CALIBRATION
- Calibration standards
- Installation in process checking equipments
PARTS PREPARATION BEFORE CONTROL(machined, In service, rough)
- Degreasing (solvents, alkaline detergents)
- Stripping (paint removal)
- Etching (pre-penetrant etching)
- Non recommended processing (grit blasting, shot peening....)
PT - LEVEL 3 PENETRANT TESTING
PUBLIC CONCERNED
All Non Destructive Testing agents involved with a certification level 3. During the examination of level 3 FPI testing certification , the questionnaires relating to the specific part relate more particularly to procedures used in the Aerospace industry.
INSPECTORS
- Visual examination,
- In situation behaviour of NDT inspector.
EQUIPMENT
- Installations
- Installation inspection equipment used in the Aerospace industry,
Penetrant testing systems
- Systems of penetrant testing used in the Aerospace industry:
Immersion,
Spraying,
Electrostatic spraying.
Products
- Choice of Penetrant Testing type according to the parts types and required defects of :
aluminium alloys, titanium alloys, cuprous alloys, steel alloys, composite materials.
Forgings,
Castings,
Machined finished parts.
- Classification of the Penetrant testing products,
- Physical properties of the Penetrant testing products :
Penetrant,
Emulsifier (hydrophilic or lipophilic),
Developper (dry or wet aqueous or non aqueous).
- Standard MIL I 25135 and AMS 2644
In process check equipment (control and installations follow-up)
- Radiometer, luxmeter, masters, etc…
OPERATING PROCEDURE
Part preparation
- Pre-penetrant cleaning and etching :
Chemical cleaning (etching, stripping, alkaline cleaning)
Mechanical cleaning (grit blasting before etching)
Electrochemical cleaning,
Vapour or cold solvent cleaning
Etc...
Process
- Penetrant process conditions,
- Penetrant processing in Aerospace industry
Maintenance
Manufacturing
- Penetrant testing on grinded chrome plating or anodised parts
- Penetrant leak testing
- Under stress penetrant testing (static or dynamic load).
- Sensitivity impact consequences of the test temperature.
DEFECT INDICATION
Specific products
- Types of defects detected during penetrant process on Aerospace parts or plated parts.
- Composite materials
- Casting parts
- Forging parts,
- Heat treated parts,
- Finished parts.
PROCESS CHECK
- Incoming inspection of penetrant products,
- In process check of a penetrant inspection system.
Note :
All over it is necessary that the candidate has knowledge over health and safety and environment requirements, Aerospace industry specifications related to penetrant process as well production costs.