The Diablo Canyon Independent Safety Committee June 5 reviewed year-old allegations from a federal employee that the potential for disruption of the Pacific Gas & Electric\u2019s nuclear reactor from earthquakes is far greater than previously expected. \tSignificant earthquake faults near the Diablo Canyon nuclear plant are capable of shaking 70 percent more than formerly modeled, according to Michael Peck, the Nuclear Regulatory Commission\u2019s resident inspector. \tIn a \u201cnon-concurrence\u201d report against the agency\u2019s other employees\u2019 formal filings in 2012, Peck determined that in the event of earthquakes, the plant\u2019s safe shutdown is questionable. \tWhile \u201cthe facts are not in dispute,\u201d according to Peck\u2019s supervisor, it\u2019s an \u201cunusual case\u201d in which a \u201ccomplete operability evaluation is ultimately needed.\u201d \tUsing modeling is a case of assumptions being fed into the software program. In Diablo\u2019s seismic case, if the Hosgri, Shoreline, San Luis Bay, and Los Oslo faults\u2019 shaking is far more that what\u2019s assumed in the modeling software for safe shutdown of the facility, then according to updated modeling, an earthquake could cause more damage than previously assessed. \tCalifornia\u2019s nuclear facilities sit on seismically challenged coastlines. If a temblor were to break up the fuel storage, the reactors, or steam generators, that could lead to toxic radioactive releases. \tThat is not to say the power plant is unsafe, according to Peck\u2019s report.