|
|---|
Category:Written Event Report (30 or 60 day)
MONTHYEARULNRC-06850, Special Report 2023-03 Pam Report Inoperability of a Post Accident Monitoring (Pam) Instrument2023-12-21021 December 2023
Special Report 2023-03 Pam Report Inoperability of a Post Accident Monitoring (Pam) Instrument
ML23080A2932023-03-21021 March 2023
Enclosure - Special Report 23-02
ML22300A0822022-10-27027 October 2022
Special Report 2022-03, Non-Functionality of Loose-Part Detection System Channel for Greater than 30 Days
ULNRC-06745, Special Report 2022-01: Inoperability of a Seismic Instrument for Greater than 30 Days2022-05-10010 May 2022
Special Report 2022-01: Inoperability of a Seismic Instrument for Greater than 30 Days
ULNRC-06724, 30-Day Report for Unsatisfactory Performance by an HHS Laboratory for Ameren Missouri Callaway Plant2022-03-16016 March 2022
30-Day Report for Unsatisfactory Performance by an HHS Laboratory for Ameren Missouri Callaway Plant
ULNRC-06708, Special Report 2022-01, Non-Functionality of Loose Parts Monitoring Channel for Greater than 30 Days2022-01-11011 January 2022
Special Report 2022-01, Non-Functionality of Loose Parts Monitoring Channel for Greater than 30 Days
ULNRC-06668, Special Report 2021-01 - Callaway Plant, Unit 1, Non-Functional Seismic Instrument for Greater than 30 Days2021-07-0808 July 2021
Special Report 2021-01 - Callaway Plant, Unit 1, Non-Functional Seismic Instrument for Greater than 30 Days
ULNRC-06618, Special Report 2020-012020-11-12012 November 2020
Special Report 2020-01
ULNRC-06542, SR-2019-003 for Callaway Plant, Unit 1, Inoperability of Loose Parts Detection System Channel 3 for Greater than 30 Days2019-11-18018 November 2019
SR-2019-003 for Callaway Plant, Unit 1, Inoperability of Loose Parts Detection System Channel 3 for Greater than 30 Days
ULNRC-05187, Inoperable Channel 3 of the Loose Parts Detection System (Lpds)2005-08-11011 August 2005
Inoperable Channel 3 of the Loose Parts Detection System (Lpds)
ML0516702022005-06-0909 June 2005
Special Report Meteorological Tower 10-60M Air Temperature Delta-T Inoperable
ULNRC-05089, Special Report on the Inoperability of Unit Vent High Range Radiation Monitor2004-11-10010 November 2004
Special Report on the Inoperability of Unit Vent High Range Radiation Monitor
ML0426104292004-09-0303 September 2004
Special Report: Meteorological Tower 10M - 60M T Indication Inoperable
ML0421702912004-07-28028 July 2004
Special Report, Meteorological Tower 10M - 60M at Wind Direction Indication Inoperable
ML0407105792004-03-0404 March 2004
Special Report Regarding Inoperable Channel 12 of the Loose Parts Detection System (Lpds)
ULNRC-04834, Facility Operating License NPF-30 10 CFR 50.46 Thirty Day Report ECCS Evaluation Model Revisons2003-04-0808 April 2003
Facility Operating License NPF-30 10 CFR 50.46 Thirty Day Report ECCS Evaluation Model Revisons
ML0208506032002-03-15015 March 2002
Special Report 2002-01 GT-RT-21B Radiation Monitor Inoperable
2023-03-21
[Table view] |
Text
ULNRC-06618 November 12, 2020 Page 1 of 1 Special Report 2020-01 Requirement Callaway Plant's Final Safety Analysis Report (FSAR) Section 16.3.3.2 contains requirements for seismic instrumentation. The Limiting Condition for Operation (LCO) specified per FSAR 16.3.3.2 requires seismic monitoring instrumentation to be Functional at all times. With a required instrument non-functional for more than 30 days, Action "a" applies. It states, "With one or more of the above required seismic monitoring instruments non-functional for more than 30 days, prepare and submit a Special Report to the Commission within the next 10 days outlining the cause of the malfunction and the plans for restoring the instrument(s) to FUNCTIONAL status."
Cause of the Non-functional Seismic Monitoring Instrument Seismic instrument SGAR0008, 'C' Steam Generator Support Peak Recording Accelerometer, was removed from service on 10/4/2020 for routine surveillance and calibration. Since this instrument is located near the Containment equipment hatch entrance, it was determined that reinstallation should occur near the end of the current refueling outage (Fall2020). It is Callaway Plant's practice to intentionally remove SGAR0008 from service during each refueling outage to prevent potential false recordings due to heavy work routinely performed near the seismic instrument.
Associated seismic instruments SGAR0005, Containment Structure Peak Recording Accelerometer, and SGAR0007, 'B' Steam Generator Piping Peak Recording Accelerometer, provide an alternate means for monitoring during a seismic event. These instruments ensure that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety.
Plans for Restoring the Instrument to FUNCTIONAL Status SGAR0008 was removed from service for calibration and to prevent false recordings which can occur during a refueling outage. As noted above, SGAR0008 will be returned to service near the end of the current refueling outage.
