NDT Procedure Examples
Reference NDT written procedures spanning eight methods and the major construction codes. Each example illustrates the section structure, calibration approach, and acceptance criteria expected by an ASNT Level III reviewer.
- UTPressure VesselsASME Section V
Ultrasonic Testing Procedure for Pressure Vessel Welds (ASME Section V)
Conventional UT examination procedure for full-penetration welds on ASME pressure vessels — calibration, scanning, acceptance criteria per ASME BPVC Section V Article 4 and Section VIII Division 1 Mandatory Appendix 12.
- RTOil & Gas PipelinesAPI 1104
Radiographic Testing Procedure for Pipeline Girth Welds (API 1104)
Ir-192 / Se-75 / X-ray procedure for pipeline girth welds — exposure setup, IQI placement, SWSI / DWSI / DWDI techniques, and acceptance criteria per API 1104 Section 9.
- MTStructural SteelAWS D1.1
Magnetic Particle Testing Procedure for Structural Welds (AWS D1.1)
Yoke-method MT procedure for structural-steel weldments per AWS D1.1 Clause 8 — magnetization in two directions, indication evaluation, statically and cyclically loaded acceptance criteria.
- PTAerospaceASTM E165
Liquid Penetrant Testing Procedure for Aerospace Fasteners (ASTM E165)
Type I fluorescent / Type II visible-dye penetrant procedure for safety-critical aerospace fasteners — AMS-2644 Level 3/4 sensitivity, halogen and sulfur control for titanium and austenitic stainless service.
- PAUTRefining / FFSAPI 579
Phased Array UT Procedure for Corrosion Mapping (API 579 FFS)
Encoded PAUT C-scan procedure for wall-loss mapping on in-service piping and pressure equipment — feeds Level 1 and Level 2 fitness-for-service evaluation per API 579-1.
- TOFDProcess PipingASME B31.3
TOFD Procedure for Process Piping Girth Welds (ASME B31.3)
Time-of-flight diffraction procedure for ASME B31.3 process-piping welds — probe pairing, PCS, multi-zone coverage, dead-zone compensation, and acceptance per ASME V Article 4 Mandatory Appendix III.
- UTAboveground Storage TanksAPI 653
Ultrasonic Thickness Measurement Procedure for AST Floors and Shells (API 653)
UT thickness procedure for aboveground storage tank shells, bottoms, and roofs per API 653 — grid layout, corrosion-rate calculation, t_min derivation, and remaining-life assessment.
- RTFoundry / CastingsASME BPVC Section V
Radiographic Testing Procedure for Steel Castings (ASME BPVC Section V)
RT procedure for carbon and low-alloy steel castings — source selection, technique sheets, and discontinuity classification per ASME BPVC Section V Article 2 with ASTM E446 / E186 / E280 reference radiographs.
- MTOil & Gas PipelinesAPI 1104
Magnetic Particle Testing Procedure for Pipeline Girth Welds (API 1104)
Wet fluorescent MT procedure for cross-country pipeline girth welds per API 1104 Section 9 — applicable as a supplementary surface examination or where RT is not feasible.
- VTStructural SteelAWS D1.1
Visual Testing Procedure for Bolted and Welded Joints (AWS D1.1)
VT procedure covering high-strength bolted and welded structural connections per AWS D1.1 Clause 8.9 and RCSC Specification — lighting, gauge calibration, snug-tight / pre-tensioned bolting methods, weld-profile acceptance.
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