Washington (Platts)--20Dec2007

A pipe bomb found in early November in the bed of a Palo Verde nuclear
plant worker's pickup truck posed "no credible" threat to the three-reactor
station, plant operator Arizona Public Service told the US Nuclear Regulatory
Commission.

In a notice on the NRC's web site, APS retracted the security-related
event notification and notification of an unusual event it issued November 2
when plant guards discovered the explosive device in the employee's truck. The
discovery led officials to placed a security lockdown on the facility and
prompted investigations by the FBI, the Maricopa County, Arizona, Sheriff's
Office and the Palo Verde security department.

In the latest notice, APS told NRC that the investigations "revealed that
the previously reported explosive device was placed in the owner's truck bed
without his knowledge. Therefore, there is no reason to believe that a person
has committed or caused, or attempted to commit or cause, or has made a
credible threat to commit or cause: theft or unlawful diversion of special
nuclear material; or significant physical damage to a power reactor; or
interruption of normal operation of a licensed nuclear power reactor."