One of the weird, hard to fathom, things about nuclear reactors is they must be connected to the grid-have emergency backup generators for cooling, even when shut-down. If not there will be a melt-down within a short time frame.

San Onofre Safety

This letter was sent to U.S. Nuclear Regulatory Commission Chairman Gregory Jaczko, with a copy to the Orange County Register.

Dear Chairman,

We were stunned to learn recently that for nearly three decades, the San Onofre nuclear reactors have been operating with inherently flawed backup emergency diesel generators, flaws that could have caused these generators to shut down as a result of a major earthquake. According to documents submitted to the NRC on May 14 of this year by Southern California Edison, the operator of the San Onofre plant, the effect of a major seismic event on the high-frequency sensors that would trigger the shutdown of the backup generators had not been analyzed. Upon discovering this issue, the sensors were immediately turned off, indicating significant safety concerns.

Allowing the San Onofre nuclear reactors, located directly next to major fault lines, to operate with such a fundamental safety issue unexamined for…

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