Quality, Safety, and Regulatory Compliance
This domain tests whether you can distinguish quality assurance from quality control, apply the hierarchy of controls, assess risk, maintain traceability, and respond to nonconformities with root-cause corrective action. Regulatory compliance is treated as a design input, not a final inspection afterthought.
Core rules and concepts
- Quality assurance is process-focused and preventive; quality control is product-focused and inspection/testing-based.
- Apply the hierarchy of controls in order: elimination, substitution, engineering controls, administrative controls, then personal protective equipment.
- Calibrate measurement equipment against traceable standards and record as-found and as-left data.
- Control nonconforming product through identification, segregation, disposition, and corrective action.
- Keep regulatory evidence: permits, inspections, training records, test reports, and revision history.
Worked example
A workstation measures 95 dBA, above an 85 dBA action level. The team first considers eliminating the noisy process, then substituting quieter equipment. It installs an acoustic enclosure around the source as an engineering control, verifies the new level with a calibrated sound-level meter, and uses hearing protection only as the final layer. The reasoning is that PPE protects the individual but does not reduce the hazard at the source; engineering controls are more reliable and require less worker behavior.
Traps
Jumping to PPE first; confusing QA and QC; treating a calibration sticker as proof that the instrument is accurate; closing a corrective action without identifying root cause; and missing that a regulation applies to the product or the process.