MIL-STD-6866 Base Document:1985
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INSPECTION, LIQUID PENETRANT
22-11-1996
1 Scope
1.1 Purpose
1.2 Application
1.3 Classification
1.3.1 Penetrant systems
1.3.2 Developers
1.3.3 Solvent removers
2 Referenced documents
2.1 Government documents
2.1.1 Specifications and standards
2.2 Other publications
2.3 Order of precedence
3 Definitions
3.1 Background
3.2 Black light
3.3 Black light filter
3.4 Bleedout
3.5 Component
3.6 Contaminant
3.7 Contracting agency
3.8 Dark adaptation
3.9 Defect
3.10 Developer
3.11 Developer, dry
3.12 Developer, nonaqueous
3.13 Developer, wet (aqueous) soluble
3.14 Developer, wet (aqueous) suspendible
3.15 Drain time
3.16 Drying oven
3.17 Dwell time
3.18 Emulsifier
3.19 Emulsifier, hydrophilic
3.20 Emulsifier, lipophilic
3.21 Etching
3.22 Evaluation
3.23 Fluorescence
3.24 Government procurement agency
3.25 Hydro-air nozzle
3.26 Indication
3.27 In-process
3.28 In-service
3.29 Inspection
3.30 Interpretation
3.31 Linear indication
3.32 NDT facility
3.33 Penetrant
3.34 Penetrant, post emulsifiable
3.35 Penetrant, solvent removable
3.36 Penetrant, water-washable
3.37 Postcleaning
3.38 Precleaning
3.39 Prime contractor
3.40 Relevant indication
3.41 Reprocess
3.42 Solvent remover
4 General requirements
4.1 Responsibility for inspection
4.2 Specifying
4.3 Personnel qualification
4.4 Materials
4.4.1 Qualified materials
4.4.2 LOX compatible materials
4.5 Equipment and facilities
4.5.1 Processing
4.5.2 Viewing
4.6 Written procedure
4.7 Inspection sequence
4.7.1 Surface treatment
4.7.2 Surface coatings
4.8 Materials and process limitations
4.9 Records
5 Specific requirements
5.1 Surface preparation
5.1.1 Solvent cleaning
5.1.2 Chemical cleaning
5.1.3 Mechanical cleaning
5.1.4 Etching
5.2 Penetrant application and dwell
5.3 Penetrant removal
5.3.1 Method A process
5.3.1.1 Manual spray
5.3.1.2 Automated spray
5.3.1.3 Manual wipe
5.3.2 Method B process
5.3.2.1 Lipophilic emulsifier application and dwell
5.3.2.2 Rinsing
5.3.3 Method C process
5.3.4 Method D process
5.3.4.1 Prerinse
5.3.4.2 Hydrophilic emulsifier application and dwell
5.3.4.3 Postrinse
5.4 Drying
5.4.1 Sequence
5.4.2 Drying parameters
5.5 Developing
5.5.1 Dry developers
5.5.2 Nonaqueous developers
5.5.3 Aqueous developers, soluble and suspendible
5.6 Inspection
5.6.1 Type I processes
5.6.2 Type II processes
5.6.3 Evaluation
5.6.3.1 Mechanical evaluation
5.7 Postcleaning
5.8 Quality assurance provisions
5.8.1 Black lights
5.8.2 White light
5.8.3 System performance
5.8.3.1 Known defect standards
5.8.4 Materials
5.8.4.1 Penetrants
5.8.4.1.1 Brightness
5.8.4.1.2 Water content (Method A penetrants only)
5.8.4.1.3 Removability (Method A penetrants only)
5.8.4.1.4 Sensitivity
5.8.4.2 Emulsifiers
5.8.4.2.1 Removability
5.8.4.2.2 Water content (lipophilic emulsifier)
5.8.4.2.3 Concentration (hydrophilic emulsifier)
5.8.4.3 Developers
5.8.4.3.1 Dry developer
5.8.4.3.2 Aqueous developer (soluble and suspended)
5.8.5 Inspection area
5.8.6 Operating pressures/temperatures
5.9 Marking
5.9.1 Impression stamping
5.9.2 Etching
5.9.3 Dyeing
5.9.4 Other identification
5.9.5 Symbols
6 Notes
6.1 Intended use
6.2 Nonmetallic components
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.