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PSPC NDFT 90/10 Check

Performance Standard for Protective Coatings - 90 % of DFT readings ≥ nominal, and no reading < 0.9 × nominal.

HullPSPC
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Formula, assumptions, and limits

Pass=(%below NDFT10)(min0.9NDFT)\text{Pass} = (\% \text{below NDFT} \leq 10) \land (\min \geq 0.9 \cdot \text{NDFT})
SymbolMeaningUnit
NDFTNDFTNominal dry film thicknessµm
ReadingsReadingsDFT measurements per ISO 19840

Source: IMO MSC.215(82) - PSPC; ISO 19840 - Coating thickness measurement

In short

Performance Standard for Protective Coatings - 90 % of DFT readings \u2265 nominal, and no reading < 0.

Learn the theory Marine Cathodic Protection and Hull Coatings