Asking federal nuclear regulators to consider seismic and other hazards before granting 20-year license extensions, Senator Dianne Feinstein (D-CA) made her second appeal in as many weeks to the Nuclear Regulatory Commission April 20 for regulatory action to toughen nuclear reactors. The senator specified that the commission should consider newly revealed threats to nuclear power plants when it considers relicensing them for an extra 20 years. No reply has yet been made to either missive, according to the senator\u2019s office. It was added that the time lag is not unusual. \u201cRecent events demonstrate that thirty-year old threat assessments can be devastatingly inaccurate,\u201d Feinstein wrote to NRC chair Greg Jaczko. \u201cIn California, researchers have recently found new faults close to nuclear power plants, and tsunami experts have learned that submarine landslides can generate local tsunamis far larger than previously believed.\u201d Pacific Gas & Electric\u2019s Diablo Canyon nuclear facility is in the midst of a relicensing application before federal regulators. The utility petitioned regulators April 12 to consider new seismic studies being performed for the Diablo power plant at a cost of up to $16.75 million. Regulators maintain they have no responsibility to include seismic data assessment in the NRC\u2019s relicensing process (Current, April 15, 2011). Southern California Edison, the majority owner and operator of the San Onofre Nuclear Generating Station, has stated it plans to apply for a license extension. Recent public statements by the utility connote hesitation. Last week, it applied for $64 million in funds to conduct new seismic studies (see page 1). Feinstein also requested the NRC to speed up placing highly radioactive spent fuel from water-cooled pools into dry cask storage in another letter to Jaczko April 11. While California\u2019s operating and shut down nuclear plants have dry cask storage, spent fuel remains in fuel pools--except for Rancho Seco which transferred the high-level waste during decommissioning. Feinstein and Senator Barbara Boxer (D-CA) called on Jaczko March 16 to explain what regulators are doing as far as strengthening California reactors\u2019 design, beefing up safety practices, and emergency notification efforts.