Monday, May 16 2022 Sign In   |    Register

News Quick Search



Front Page
Power News
Today's News
Yesterday's News
Week of May 09
Week of May 02
Week of Apr 25
Week of Apr 18
Week of Apr 11
By Topic
By News Partner
Gas News
News Customization


Pro Plus(+)

Add on products to your professional subscription.
  • Energy Archive News

    Home > News > Power News > News Article

    Share by Email E-mail Printer Friendly Print

    NRC Issues Event Notification for Monticello Nuclear Plant in Minn.

    January 25, 2022 - Targeted News Service


      WASHINGTON, Jan. 24 -- The Nuclear Regulatory Commission issued the following event notification (No. 55708) involving Monticello Nuclear Plant, Minnesota:


      The following information was provided by the licensee via email:

      "This telephone notification is provided in accordance with 10 CFR 50.73(a)(1) to report an invalid actuation of secondary containment relays in accordance with 10 CFR 50.73(a)(2)(iv)(A).

      "On November 29, 2021, the `B' Fuel Pool radiation monitor spiked high during restoration following the performance of the 0068 procedure `Spent Fuel Pool & Reactor Building Exhaust Plenum Monitor Calibration' due to cable to radiation monitor connector degradation from handling. This resulted in a Partial Primary Containment Group II isolation (gas systems), initiation of Standby Gas Treatment system, and isolation of the Reactor Building Ventilation system.

      "All systems responded as designed to the actuation signal. Operations reset the Partial Primary Containment Group II isolation signal, shutdown Standby Gas Treatment System, and restored Reactor Building Ventilation system per procedures.

      "At the time of the occurrence, the `A' Fuel Pool radiation monitor was reading normal at approximately 1.5 mr/hr. The `B' Fuel Pool radiation monitor spiked above the 50 mr/hr setpoint and continued to read erratically. Work was performed to clean and reconnect the connector and testing per 0068 procedure verified the condition was corrected. The `B' Fuel Pool radiation monitor returned to service.

      "There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."

      Power Reactor

      Event Number: 55708

      Facility: Monticello

      Region: 3

      State: MN

      Unit: [1] [] []

      RX Type: [1] GE-3

      NRC Notified By: Jason Brevig

      HQ OPS Officer: Mike Stafford

      Notification Date: 01/21/2022

      Notification Time: 10:25 [ET]

      Event Date: 11/29/2021

      Event Time: 11:28 [CST]

      Last Update Date: 01/21/2022

      Emergency Class: Non Emergency

      10 CFR Section:

      50.73(a)(1) - Invalid Specif System Actuation

      Person (Organization):

      Stoedter, Karla (R3)

      Table omitted:


    Other Articles - Generation


       Home  -  Feedback  -  Contact Us  -  Safe Sender  -  About Energy Central   
    Copyright © 1996-2022 by CyberTech, Inc. All rights reserved.
    Energy Central® and Energy Central Professional® are registered trademarks of CyberTech, Incorporated. Data and information is provided for informational purposes only, and is not intended for trading purposes. CyberTech does not warrant that the information or services of Energy Central will meet any specific requirements; nor will it be error free or uninterrupted; nor shall CyberTech be liable for any indirect, incidental or consequential damages (including lost data, information or profits) sustained or incurred in connection with the use of, operation of, or inability to use Energy Central. Other terms of use may apply. Membership information is confidential and subject to our privacy agreement.