Tag Archives: Arizona

Event Reports: Loss of offsite power, seismic vulnerability, a dropped control element assembly and another and another Fitness for Duty violation

Posted on November 7, 2014 by Robert Singleton

This week in nuclear power kicked on Hallloween: 1. Friday afternoon, the Diablo Canyon nuclear power facility in California experienced an unplanned activation of all six of the plant’s emergency diesel generators when a thunderstorm knocked out offsite power to the station. … Continue reading →

Posted in Cook, Diablo Canyon, Event Reports, Nuclear Regulatory Commission, Palo Verde, Prairie Island, Quad Cities | Tagged , , , , , , , , , , , , , | Leave a comment

Event Reports: Earthquake felt on-site at Arizona nuke, Fitness for Duty failures in Pennsylvania and Tennessee, alarm failure reported in Illinois and high winds felt at Iowa nuke

Posted on July 5, 2014 by Robert Singleton

Some items from this week’s Events Notification Report page on the Nuclear Regulatory Commission’s website: 1. On Saturday night, Arizona’s Palo Verde nuclear power declared an Unusual Event after an earthquake was felt on-site. The shaking was the result of … Continue reading →

Posted in Beaver Valley, Drunk at work, Duane Arnold, Earthquake, Event Reports, Fitness for Duty, Nuclear Regulatory Commission, Palo Verde | Tagged , , , , , , , , , , , , , , | Leave a comment

Event Reports: An Arizona nuke reports an explosion five months after the fact and a Michigan licensed nuke worker fails a Fitness for Duty test

Posted on April 11, 2014 by Robert Singleton

Two items from this morning’s Nuclear Regulatory Commission’s Event Notification Report: 1. Last November, the Palo Verde nuclear power plant reported a control room alarm that indicated low fluid pressure in a hyrdaulic accumulator serving a main steam isolation valve … Continue reading →

Posted in Cook, Event Reports, Explosion, Fitness for Duty, Nuclear Regulatory Commission, Palo Verde | Tagged , , , , , , , , , | Leave a comment

Event Reports: Arizona reactor has ‘control rod deviation,’ and an update on Vogtle reactor trip

Posted on April 17, 2012 by Robert Singleton

From today’s NRC Event Reports: 1. Sunday afternoon, operators at the Palo Verde nuclear power plant were performing low power physics testing on Unit 3, preparing to bring the reactor back online following a refueling outage. When inserting a control rod assemby, … Continue reading →

Posted in Event Reports, Nuclear Regulatory Commission, Palo Verde, Plant shutdowns, Reactor problems, Southern Co., Vogtle | Tagged , , , , , , | Leave a comment

Event Reports: Emergency cooling failure at one nuke in North Carolina, a vague security threat at another, and a suspicious package in Arizona

Posted on February 24, 2012 by Robert Singleton

  Some items from this morning’s NRC Event Reports page:   1. Yesterday evening, a fault in a common electrical component shut down the Emergency Core Cooling System serving both reactors at the Brunswick nuclear power plant in North Carolina. … Continue reading →

Posted in Brunswick, Event Reports, McGuire, Nuclear Regulatory Commission, Palo Verde, Plant shutdowns, Reactor problems, Security | Tagged , , , , , , , , | Leave a comment

Event Report: Stoned on Duty at Arizona nuke

Posted on January 20, 2012 by Robert Singleton

Wednesday afternoon, a contract employee supervisor at the Palo Verde nuclear power plant in Arizona tested positive for an illegal substance in a Fitness for Duty screening. The supervisor’s access to the plant has been terminated.  

Posted in Drugs at work, Event Reports, Fitness for Duty, Nuclear Regulatory Commission, Palo Verde | Tagged , , , , , | Leave a comment

Event Reports: Two reactor shutdowns and a case of worker exposure

Posted on November 23, 2011 by Robert Singleton

1. The Unit 1 reactor at the Palo Verde nuclear power plant in Arizona had to be manually shut down on Tuesday night. Operators were conducting Low Power Physics Testing in preparation for restarting the reactor following a refueling outage when … Continue reading →

Posted in Event Reports, Fort Calhoun, Nuclear Regulatory Commission, Palo Verde, Plant shutdowns, Radiopharmaceuticals, Reactor problems, Worker exposure | Tagged , , , , , , , , , | Leave a comment

Event Reports: Two reactor scrams, a faulty safety system and something missing in spent fuel pool

Posted on November 21, 2011 by Robert Singleton

Four items from this morning’s NRC Event Reports: 1. Late Saturday, operators were performing valve bypass testing on Unit 1 at the Monticello nuclear power plant in Minnesota, when the reactor scrammed and the Reactor Protective System activated on low … Continue reading →

Posted in Event Reports, Millstone, Monticello, Nuclear Regulatory Commission, Palo Verde, Plant shutdowns, Reactor problems | Tagged , , , , , , , , , | Leave a comment

Event Reports: Cut fiber optic lines, a small explosion and a stoned supervisor

Posted on October 11, 2011 by Robert Singleton

Notes from the Columbus Day weekend: 1. Two New York nuclear plants with a total of three reactors were without some emergency notification systems after a traffic accident Friday afternoon. Nine Mile Point reported that multiple annunciators sounded, resulting in the … Continue reading →

Posted in Event Reports, Expansion, Explosion, Fitness for Duty, Nuclear Regulatory Commission, Reactor problems, South Texas Project, Transportation | Tagged , , , , , , , , , , , , , | Leave a comment

Arizona reactor declares Unusual Event

Posted on October 9, 2011 by Robert Singleton

Phoenix radio station KTAR reported this morning: Officials at the Palo Verde Nuclear Generating Station west of Phoenix are investigating what they call an “unusual event” that happened on Saturday afternoon. The “unusual event” occurred when water caused a junction … Continue reading →

Posted in Event Reports, Nuclear Regulatory Commission, Reactor problems | Tagged , , , , , | Leave a comment