Exelon's Lasalle 2 nuclear plant forced offline in Illinois

Sponsored by

Exelon and the Nuclear Regulatory Commission (NRC) are investigating the cause of a problem that forced the Unit 2 of the LaSalle nuclear station to be taken offline Aug. 5.

LaSalle 2 was listed at zero generation in the NRC’s daily reactor status report on Aug. 6, according to GenerationHub.

An “event notification report” filed with NRC offered the following details:

"At 1734 CDT on August 5, 2014, LaSalle Unit 2 automatically scrammed due to an RPS actuation. The MSIVs isolated on a Group 1 signal, the cause is under investigation,” according to the NRC report.

“The reactor water cleanup system isolated during the transient. The power plant is stable with Reactor Pressure Control being maintained by the Reactor Core Isolation Cooling System and SRVs and level being controlled by the Low Pressure Core Spray System. The plant is planned to remain in hot shutdown pending investigation of the trip," according to the NRC document.

Exelon said in a statement that a valve on one of the power plant's steam lines closed. “The plant responded as expected, safely and without incident,” Exelon said in a news release.

LaSalle 1 was not affected by the problem at Unit 2.

LaSalle Generating Station is located about 75 miles southwest of Chicago near Marseilles, Ill. At full power, the facility’s two generating units produce more than 2,200 MW. Both units are boiling water reactors (BWRs) commissioned in the mid-1980s.

NRC reported that 98 of the nation’s 100 nuclear reactors were generating power on Aug. 6.

The Tennessee Valley Authority (TVA) Browns Ferry 2 facility in Alabama remains offline.

The NextEra Energy St. Lucie 2 unit has returned to service. In addition, the Exelon-run Ginna plant in New York is back at 100 percent generation after being down to only 2% a couple of days earlier, according to NRC data.

Sponsored by

Most Popular Articles


CURRENT MAGAZINE ISSUE

September 2014
Volume 18, Issue 8
file

Utility Products Topics

Transmission & Distribution
                       Vehicles & Accessories
Tools & Supplies   Safety
Line Construction & Maintenance   Test & Measurement

WEBCASTS

There is no current content available.

UTILITY PRODUCTS BUYERS' GUIDE

POWER INDUSTRY JOBS

Industry Company Pages

Keep up-to-date with the latest news and articles from some of the prominent utility product companies and resources.

BUYER'S GUIDE PRODUCTS

Meter Socket Jumpers - Perfect for Submetering Applications

AEP’s Meter Socket Jumper offers a safe and easy means of bypassing a meter socket. The Socket Jumper can be used with either Ringless or Ring style Meters.

Meter Socket Converter

AE Product’s Meter Socket Converter (CNV) converts various Meter Forms to fit the desired application. 14S, 15S or 16S Socket to accept 2S Meter. Optional features available.

Service Disconnect Adapter with Electronic Meter Energizing

AEP’s Service Disconnect Adapter disconnects customer load but maintains power to the electronic meter. The meter maintains reading and communications links for AMR/AMI operations while only disabling the load side.