One technique that I used that seemed to impress them during my interview for an I&C position was learning ahead of time plant events... I read the news releases related to the plant, and their trips in the several years past. For instance, they had a unscheduled outage for an abnormal noise in a S/G, and when they asked me for examples of work controls I had used in the past, I was able to bring up FME practices, citing the shutdown they had had for the abnormal noise, and the effects of other FME problems Navy related. As I had several different plant events I was able to bring up throughout, it showed that I had done my homework related to their site. (Got the job, BTW)
Additionally, they commented afterwards that I had an attitude of looking forward to their next question, enjoyed the interview, and had a relaxed demeanor throughout. Plus injected humor, when appropriate. The guys who interviewed me were extremely easy going and relaxed, so I easily followed suit. Hopefully your interview will be likewise.
Best of luck,
Bill