Stress can affect anyone and high pressure situations are not uncommon as a QC Inspector. Talk to the hiring manager about your ability to successfully perform under high pressure conditions while still maintaining a positive attitude.
"Last month we had an unexpected safety audit from head office. I was not panicked because safety is something that we regularly practice, but our production staff were nervous. I was able to keep our team calm by showing them that we were doing a great job. My supervisor commented later on how well I managed to keep calm through the situation. We passed the audit with flying colors."