Note, I changed my avatar about when I posted the topic.
Chernobyl was, as Gorey pointed out, an act of gross negligence, coupled to a design that wasn't the safest to begin with. The test that they were performing at the time was ill concieved and was pretty well doomed to end up with what they achieved.
There was a serious issue, that killed a lot of people up front. The soldiers that provided the initial containment were absolute heros.
BTW, where I work (as well as most plces that comply with the pressure piping codes), we X-Ray welds. We bring radioactive isotopes on site in shielded containers, and then expose them to the pipe, with a film on the other side. Should a "source" go missing, about the only way to get it back is for people to run in with sandbags full of lead shot, and throw it near the source.
Japan ended up with 16 reactors with significant cracking because they entrusted maintenance to the companies, rather than sending in inspectors to check. The companies placed profit ahead of safety.
BTW, You have high energy nuclear sources driving through town every day, regardless of your Nuke free status. I've only heard (anecdotally) of a single incidence in a few decades of use.
If the company that I work for were to open a nuke under the current plant maintenance strategy...I'd move...to another state.
If I were responsible for maintenance at a nuclear site, and had a supportive management, I'd have my family living next door.
Bearing in mind that we can make coal fired electricity for less than 3c/kWhr (check you bill forwhat you pay), I believe that we should have Government run/controlled nukes (otherwise how can you be sure of weapons production), with corporate owned shoulder and peaking plant competing for those markets.