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NDT Method Comparisons

When the choice comes down to two methods, these head-to-heads put them side by side on sensitivity, speed, cost, access and code coverage — so you can defend the selection in a procedure review.

MT vs PT

Magnetic particle vs liquid penetrant testing on welds, castings, and forgings. Sensitivity, surface prep, cost, ASME V Articles 6 and 7 coverage.

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PAUT vs RT

PAUT vs radiographic testing on butt welds and vessels. ASME VIII §7.5.5 substitution, API 1104 Annex A, cost per weld, throughput, and exclusion zones.

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PAUT vs UT

PAUT vs conventional ultrasonic testing on welds, vessels, and corrosion mapping. Throughput, cost per weld, ASME V Article 4 mandatory appendices.

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RT (Film) vs CR

Film RT vs Computed Radiography on welds and castings. Image quality, IQI sensitivity, ASME V Article 2, cost per shot, archive and DICONDE workflow.

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RT (Film) vs DR

Film RT vs DR flat-panel detectors on welds and castings. Real-time imaging, IQI sensitivity, ASME V Mand. App. VIII, cost per shot, and ROI math.

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TOFD vs PAUT

TOFD vs PAUT for vessel and pipeline welds. Sensitivity, sizing accuracy, dead zones, ASME V Art. 4 Mand. App. III vs IV, and why they pair up.

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UT vs PAUT

Conventional UT vs PAUT decision matrix. Setup overhead, defect sizing, cost per weld, ASME V Article 4 coverage, and when single-angle manual UT wins.

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UT vs RT

UT vs RT for butt welds, castings, and corrosion mapping. Cost per linear foot, throughput, code coverage under ASME V/VIII and API 1104. Inspector-written.

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VT vs PT

Visual Testing vs Liquid Penetrant on welds, castings, and aerospace parts. AWS D1.1, ASME V Articles 6 and 9, defect resolution limits, and inspector vision standards.

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