ISO 9001 - QMS Awareness Program

A: A fits the environment described and the missing paint system detail makes it worse. B tempts people used to powertrain layouts, but underfloor rail hardware rarely sees sustained oxidation temperatures. C sounds safety-aware, yet there's no CP system or plating process in play here. D can happen in drains and tanks, but intermittent splash with salt doesn't support stable MIC colonies.

A: A ties inspection failure to an actual in-service effect, which is what risk-based thinking pushes you toward. B and C feel familiar to QMS folks, but they're management system outcomes, not physical consequences. D can happen, yet it assumes the issue is still caught before shipment, which breaks the scenario.

A: Worst case puts the shaft at max and the bore at min. That leaves 50.07 − 50.05 in diameter terms, which halves to a tight radial gap. B comes from mixing radial and diametral values. C assumes nominal shaft with worst bore. D doubles everything and forgets what clearance actually means in assembly.

A: 50 microns is five-hundredths of a millimeter, so A is the right order. B and C come from slipping a decimal, something everyone’s done under pressure. D ignores that corrosion rate is thickness-based, not area-based, which is exactly the trap risk estimation tries to avoid.