Standard Guides:WeldingPipingASMEAPIAsset Matrix
Liquid Penetrant Testing
CoreSurface & Visual • PT

Liquid Penetrant Testing (PT)

Method Overview

Detection of surface-breaking defects in non-porous materials through capillary action of visible or fluorescent dye penetrants.

Core Method Specifications

Technique IDPT
AcronymPT
CategoryCore
ModalitySurface & Visual
Default Report TemplatePT-Standard-Template

Target Applications & Governing Standards

2 Scopes Configured
Valves & Pressure Control
API 598 ASME Sec V Art 6
Target Assets / Components:
Valve Seating SurfacesStellited Disc FacesValve Stem Threads
Detectable Defects & Anomalies:
• Micro-cracks• Seating Surface Scratches• Pinholes
Pressure Vessels
API 510 ASME Sec VIII
Target Assets / Components:
Austenitic Stainless CladdingInternal Attachments
Detectable Defects & Anomalies:
• Pinhole Leaks• Cladding Tears• Surface Cracking

Technique-to-OEM Compatibility Matrix

Verified manufacturers, instrument models, and diagnostic portals supporting PT.

4 Verified OEMs
Magnaflux

Magnaflux

Industry benchmark for liquid penetrant and magnetic particle inspection consumables and yokes.

Modalities:MTPT
OEM Profile Magnaflux Tech Support
OEM Site

Sherwin Incorporated

OEM Manufacturer for PT inspection systems.

Verified Partner

Met-L-Chek

OEM Manufacturer for PT inspection systems.

Verified Partner

Chemetall

OEM Manufacturer for PT inspection systems.

Verified Partner
ASME Sec V & ISO 9712 Qualified
Rent PT Instruments OEM Hardware CatalogPost PT Project Scope
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Technical articles, damage mechanism guides, inspection scopes, engineering formulas, and code summaries published across the NDT Exchange knowledge base are synthesized with the assistance of Artificial Intelligence (AI) and specialized industrial engineering reference models.

While all content is cross-referenced against authoritative standards (ASME, API, AWS, ISO, ASTM, NACE/AMPP), it is provided strictly for educational, preliminary scoping, and reference purposes. It does not constitute formal professional engineering advice, procedure qualifications (WPS/PQR), or certified inspection sign-offs. Always verify testing parameters, wall thickness sizing, and flaw acceptance criteria against the latest governing code edition and consult a certified Level III, Professional Engineer (PE), or certified inspector (API 510/570/653, AWS CWI, CSWIP) prior to field execution.