I just wanted to give people an idea what it's like. If a commercial nuclear plant in the U.S. called and said they needed a replacement for Breaker X sometime in the next 18 months, because it was reaching the end of it's engineering life. We would go to Westinghouse, GE or whoever made the breaker and we would order six identical breakers from the same manufacturing batch and lot number.

When I say we, I mean the company I worked for, a third party, unaffiliated with either the power plant or the manufacturer, because the manufacturer is not allowed to sell parts directly to the power plant, a third party certified by the NRC has to oversee every part that's to be used in a critical safety system.

When we got them, I would unpack them and photograph, photocopy and verify everything from the condition of the box they came in down to the serial numbers on each component.