LIQUID PENETRANT TESTING

Dye penetrant inspection (DPI), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics). The penetrant may be applied to all non-ferrous materials and ferrous materials, although for ferrous components magnetic-particle inspection is often used instead for its subsurface detection capability. LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components.

 

 

  • EN 12952-6, Water-tube boilers and auxiliary installations Inspection during construction; documentation and marking of pressure parts of the boiler
  • EN 12953-5, Shell boilers. Inspection during construction, documentation and marking of pressure parts of the boiler
  • EN 13480-5, Metallic industrial piping Inspection and testing
  • EN 13445-5, Unfired pressure vessels Inspection and testing
  • EN 12732, Gas infrastructure. Welding steel pipework. Functional requirements
  • EN 14015, Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above
  • EN 1090-2, Execution of steel structures and aluminium structures Technical requirements for steel structures
  • EN 14197-2, Cryogenic vessels. Static non-vacuum insulated vessels Design, fabrication, inspection and testing
  • EN 13458-2, Cryogenic vessels. Static vacuum insulated vessels Design, fabrication, inspection and testing
  • EN-ISO 9606-1, Qualification testing of welders. Fusion welding Steels
  • EN-ISO 9606-2, Qualification test of welders. Fusion welding Aluminium and aluminium alloys
  • EN ISO 15614-1 Specification and qualification of welding procedures for metallic materials. Welding procedure test. Arc and gas welding of steels and arc welding of nickel and nickel alloys
  • EN-ISO 17635, Non-destructive testing of welds. General rules for metallic materials

Standards Specific to Liquid Penetrant Examination

  • EN-ISO 23277, Non-destructive testing of welds — Penetrant testing of welds — Acceptance levels
  • EN 1371-1, Founding — Liquid penetrant inspection — Sand, gravity die and low pressure die castings
  • EN 1371-2, Founding — Liquid penetrant inspection — Investment castings
  • EN 10228-2, Non-destructive testing of steel forgings — Penetrant testing
  • EN-ISO 3452-1, Non-destructive testing — Penetrant testing — General principles
  • EN-ISO 3452-2, Non-destructive testing — Penetrant testing — Testing of penetrant materials
  • EN-ISO 3452-3, Non-destructive testing — Penetrant testing — Reference test blocks
  • EN-ISO 3452-4, Non-destructive testing — Penetrant testing — Penetrant testing equipment
  • EN-ISO 3452-5, Non-destructive testing — Penetrant testing — Penetrant testing at temperatures higher than 50 degrees C
  • EN-ISO 3452-6, Non-destructive testing — Penetrant testing — Penetrant testing at temperatures lower than 10 degrees C
  • EN-ISO 3059, Non-destructive testing — Penetrant testing and magnetic particle testing — Viewing conditions
  • EN-ISO 12706, Non-destructive testing — Penetrant testing — Vocabulary
  • ASME Boiler and Pressure Vessel Code Section V Article 6 — Liquid Penetrant Examination
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