Chris. Thanks for the correction, I'm not sure why I wrote 90 deg. The SCR firing angle isn't even 90, not sure what I was thinking there.
Jack. I apologize if I sounded to casual or cavalier. It was not my intent at all. The design of the system requires, that in the event of power failure the control rods will insert to shutdown the reactor in a controlled manner . This is the safe, conservative condition. Once again, I apologize for being insensititve. I am extensively familiar with the incident at Browns Ferry, having spent hours in training sessions going over a timeline chronology minute by minute of that event. That incident caused every nuclear power station in the country to have to redesign their instrumentation and control schemes to provide for safe shutdown in the event of a similar incident. These are the Appendix R, Reg Guide 1.97 requirements for safe shutdown. All nuclear utilities are required by federal law to meet this criteria or shutdown the plant until they meet these requirements
Markus. After all of this, Joe may have the best solution to buy a new AC unit