Event Reports: An electrical issue shuts down a reactor in New Hampshire, a leak causes an Illinois reactor to coast to a stop, a Louisiana reactor loses emergency sirens and an earthquake hits a shuttered nuke in California

Some items from today’s Event Notification Report:

1. Early this morning, as operators were ramping down the sole reactor at New Hampshire’s Seabrook nuclear power plant for refueling, the reactor shut itself down and initiated an emergency feedwater activation. The cause of the shutdown was loss of power to an electrical bus. Seabrook reports that the exact cause of the electrical problem is being investigated.

2. Yesterday afternoon, a leaking isolation valve was indentified in Unit 2 at Illinois’ Quad Cities nuclear power plant. The reactor was in the process of being ramped down to zero at the time of the leak, but the condition required a Technical Specification shutdown, requiring the plant to get to zero output within twelve hours. This morning’s Reactor Status Report indicates that the unit is now shut down.

3. A monthly siren inspection yesterday afternoon showed that six emergency sirens associated with the Waterford nuclear power plant in Louisiana were inoperable. Waterford says that repairs will be made today.

4. And, the San Onofre nuclear power plant in California determined that it failed to declare an emergency after an earthquake was felt on the grounds of the facility. The earthquake, which registered at 5.1 in Los Angeles, occurred Friday evening, and was severe enough that San Onofre should have declared a Notice of Ususual Event, per NRC rules. San Onofre is being decommissioned, and the two reactors at the site have been defueled, but the fuel rods are presumably onsite, probably in the spent fuel pools.


About Robert Singleton

By day, I work for a call center. In my spare time, I try to save my hometown (and planet) from a nearly constant onslaught of greedheads, lunatics and land developers. I live in a fictional town called Austin, Texas, where I go to way too many meetings.
This entry was posted in Earthquake, Event Reports, Nuclear Regulatory Commission, Quad Cities, Reactor problems, San Onofre, Seabrook, Waterford and tagged , , , , , , , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s