Safety, Ethics, and Quality Assurance
Safety, ethics, and QA are intertwined: a quality result obtained unsafely or dishonestly is not a quality result. Safety: know hazards per method - radiation (RT: time, distance, shielding; dosimetry; controlled areas), high voltage and stored energy (UT/ET equipment), chemical exposure (PT/MT penetrants and developers; ventilation, PPE, SDS), and physical hazards (compressed gas, heavy specimens, noise). Understand hierarchy of controls: eliminate/substitute, engineering controls, administrative controls, then PPE last. Traps: treating PPE as the primary control; ignoring confined-space or lockout/tagout requirements; skipping radiation surveys.
Ethics: inspectors must be impartial, competent, and honest. Conflicts of interest must be disclosed. Pressure to pass nonconforming items, falsifying records, or signing for work not performed are serious violations. Report concerns through proper channels; whistleblower protections exist. Independence matters - an inspector should not certify their own work where independence is required.
Quality assurance (QA) is process-focused (procedures, audits, training, calibration programs); quality control (QC) is product-focused (inspection, testing). Know corrective vs preventive action, root-cause analysis, and continual improvement. Traps: confusing QA with QC; treating a passing inspection as proof the process is controlled.
Rule of thumb: when safety, schedule, and honesty conflict, safety and integrity win - document the conflict and escalate. Worked example: a supervisor asks you to sign an inspection report for a weld you did not examine to meet a shipment deadline. The correct action is to refuse, not sign, notify per procedure, and record the situation - signing would be falsification regardless of deadline pressure.