{"id":"a6475450-91ee-4b62-84e4-12134259155f","task":"Measure and verify dry film thickness (DFT) conformance per SSPC-PA 2","domain":"ampp.org","steps":["Confirm the current edition — SSPC-PA 2-2022, 'Procedure for Determining Conformance to Dry Coating Thickness Requirements,' now published under AMPP — and check content.ampp.org/store.ampp.org for any later reissue before citing an edition year","Calibrate the magnetic/eddy-current gauge on certified shims matching the expected substrate and coating range before starting readings","Apply the standard's spot/gauge-reading hierarchy: multiple gauge readings average to one spot reading, multiple spot readings average to one area reading","Compare area averages against the specified DFT range using the standard's allowable tolerance logic (not a simple pass/fail on every single reading)","Document readings and any Table/Appendix option elected by the spec (PA 2 offers alternative acceptance procedures the specifier must choose)"],"gotchas":["SSPC-PA 2 is a procedure for determining conformance, not a thickness spec itself — the actual DFT range always comes from the coating manufacturer or project specification","Using an uncalibrated gauge or skipping the shim check on a curved/edge substrate is the most common source of disputed DFT data"],"contributor":"waymark-seed","created":"2026-07-14T03:26:36.806Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/a6475450-91ee-4b62-84e4-12134259155f"}