ULNRC-06157, Special Report 2014-04: Inoperability of a Seismic Instrument for Greater than 30 Days: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 17: Line 17:


=Text=
=Text=
{{#Wiki_filter:W Ameren MISSOURI Callaway Plant ****************************************************************************************************************************************************************************************************************************************************
{{#Wiki_filter:~ 't WAmeren                                                                                                                                                                                    Callaway Plant MISSOURI
****************************************************************************************************************************************************************************************************************************************************
****************************************************************************************************************************************************************************************************************************************************
November 14 , 2014 ULNRC-06157 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Ladies and Gentlemen:
****************************************************************************************************************************************************************************************************************************************************
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO. FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 2014-04: INOPERABILITY OF A SEISMIC INSTRUMENT FOR GREATER THAN 30 DAYS Enclosed is a special report addressing the inoperability of a seismic monitoring instrument at Callaway Plant. No new commitments are identified in this correspondence, and none of the material in this report is considered proprietary by Union Electric Company (Ameren Missouri).
November 14, 2014 ULNRC-06157 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Ladies and Gentlemen:
If you have any questions or require additional information, please contact Mr. Thomas Elwood , Supervising Engineer, Regulatory Affairs and Licensing at 314-225-1905. DRB/nls Enclosure  
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.
............................................................................................................................  
FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 2014-04:
............................................................................................................................  
INOPERABILITY OF A SEISMIC INSTRUMENT FOR GREATER THAN 30 DAYS Enclosed is a special report addressing the inoperability of a seismic monitoring instrument at Callaway Plant.
............................................................................................................................  
No new commitments are identified in this correspondence, and none of the material in this report is considered proprietary by Union Electric Company (Ameren Missouri).
..................................................................................................................
If you have any questions or require additional information, please contact Mr. Thomas Elwood, Supervising Engineer, Regulatory Affairs and Licensing at 314-225-1905.
..........  
7:~~
****************************************************************************************************************************  
Barry L. Cox Senior Director, Nuclear Operations DRB/nls Enclosure
.............................................................................................................................. Barry L. Cox Senior Director, Nuclear Operations PO Box 620 Fulton, MD 65251 AmerenMissouri.com
............................................................................................................................
*************
............................................................................................................................                                                                                                         **************
* *************
............................................................................................................................
* *************
............................................................................................................................       PO Box 620                  Fulton, MD 65251                    AmerenMissouri.com                **************
* . ............. .
                                                                                                                                                                                                                                      .**************
ULNRC-06157 November 14, 2014 Page2 cc: Mr. Marc L. Dapas Regional Administrator U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Fred Lyon Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8B 1 Washington, DC 20555-2738 ULNRC-06157 November 14,2014 Page 3 Index and send hardcopy to QA File A160.0761 Hardcopy:
                                                                                                                                                                                                                                        ............. .
..............................................................................................................................
****************************************************************************************************************************
 
ULNRC-06157 November 14, 2014 Page2 cc:   Mr. Marc L. Dapas Regional Administrator U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Fred Lyon Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8B 1 Washington, DC 20555-2738
 
ULNRC-06157 November 14,2014 Page 3 Index and send hardcopy to QA File A160.0761 Hardcopy:
Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution:
Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution:
F. M. Diya D. W. Neterer L. H. Graessle T. E. Herrmann B.L.Cox S. A. Maglio T. B. Elwood Corporate Communications NSRB Secretary STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)
F. M. Diya D. W. Neterer L. H. Graessle T. E. Herrmann B.L.Cox S. A. Maglio T. B. Elwood Corporate Communications NSRB Secretary STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)
Enclosure to ULNRC-06157 Special Report 2014-04 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 Operable at all times. With a required instrument inoperable for more than 3 0 days, Action A applies. It states, "With one or more of the above required seismic monitoring instruments inoperable for more than 30 days, prepare and submit a Special Report to the Commission within the next 1 0 days outlining the cause of the malfunction and the plans for restoring the instrument(s) to OPERABLE status." Cause of the Seismic Monitoring Instrument Inoperability Seismic instrument SGAR0008, 'C' Steam Generator Support Peak Recording Accelerometer, was removed from service on 10/11/2014 for a routine surveillance and calibration.
Enclosure to ULNRC-06157 Special Report 2014-04 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 Operable at all times. With a required instrument inoperable for more than 3 0 days, Action A applies. It states, "With one or more of the above required seismic monitoring instruments inoperable 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 OPERABLE status."
Since this instrument is located near the Containment Equipment Hatch entrance, it was determined that reinstallation would occur near the end of the current refueling outage. It has since been reinstalled (on 11/13/2014).
Cause of the Seismic Monitoring Instrument Inoperability Seismic instrument SGAR0008, 'C' Steam Generator Support Peak Recording Accelerometer, was removed from service on 10/11/2014 for a routine surveillance and calibration. Since this instrument is located near the Containment Equipment Hatch entrance, it was determined that reinstallation would occur near the end of the current refueling outage. It has since been reinstalled (on 11/13/2014). It is Callaway Plant's practice to remove SGAR0008 from service during a refueling outage to prevent potential false recordings due to heavy work performed near the seismic instrument.
It is Callaway Plant's practice to remove SGAR0008 from service during a refueling outage to prevent potential false recordings due to heavy work performed near the seismic instrument.
Associated seismic instrumentation 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. This instrumentation ensures that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety (thus to determine if plant shutdown is required pursuant to Appendix A of 10 CFR Part 100).
Associated seismic instrumentation 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. This instrumentation ensures that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety (thus to determine if plant shutdown is required pursuant to Appendix A of 10 CFR Part 100). Plans for Restoring the Instrument to OPERABLE status SGAR0008 was removed from service for calibration and to prevent false recordings which can occur during a refueling outage. As noted above, SGAR0008 was returned to service on 11113/2014, which is near the end of the current refueling outage.}}
Plans for Restoring the Instrument to OPERABLE status SGAR0008 was removed from service for calibration and to prevent false recordings which can occur during a refueling outage. As noted above, SGAR0008 was returned to service on 11113/2014, which is near the end of the current refueling outage.}}

Revision as of 20:24, 31 October 2019

Special Report 2014-04: Inoperability of a Seismic Instrument for Greater than 30 Days
ML14318A744
Person / Time
Site: Callaway Ameren icon.png
Issue date: 11/14/2014
From: Cox B
Ameren Missouri, Union Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ULNRC-06157 Special Report 2014-04
Download: ML14318A744 (4)
v • d • e


Text

~ 't WAmeren Callaway Plant MISSOURI

November 14, 2014 ULNRC-06157 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Ladies and Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.

FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 2014-04:

INOPERABILITY OF A SEISMIC INSTRUMENT FOR GREATER THAN 30 DAYS Enclosed is a special report addressing the inoperability of a seismic monitoring instrument at Callaway Plant.

No new commitments are identified in this correspondence, and none of the material in this report is considered proprietary by Union Electric Company (Ameren Missouri).

If you have any questions or require additional information, please contact Mr. Thomas Elwood, Supervising Engineer, Regulatory Affairs and Licensing at 314-225-1905.

7:~~

Barry L. Cox Senior Director, Nuclear Operations DRB/nls Enclosure

............................................................................................................................

............................................................................................................................ **************

............................................................................................................................

............................................................................................................................ PO Box 620 Fulton, MD 65251 AmerenMissouri.com **************

.**************

............. .

..............................................................................................................................

ULNRC-06157 November 14, 2014 Page2 cc: Mr. Marc L. Dapas Regional Administrator U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Fred Lyon Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8B 1 Washington, DC 20555-2738

ULNRC-06157 November 14,2014 Page 3 Index and send hardcopy to QA File A160.0761 Hardcopy:

Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)

Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution:

F. M. Diya D. W. Neterer L. H. Graessle T. E. Herrmann B.L.Cox S. A. Maglio T. B. Elwood Corporate Communications NSRB Secretary STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)

Enclosure to ULNRC-06157 Special Report 2014-04 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 Operable at all times. With a required instrument inoperable for more than 3 0 days, Action A applies. It states, "With one or more of the above required seismic monitoring instruments inoperable 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 OPERABLE status."

Cause of the Seismic Monitoring Instrument Inoperability Seismic instrument SGAR0008, 'C' Steam Generator Support Peak Recording Accelerometer, was removed from service on 10/11/2014 for a routine surveillance and calibration. Since this instrument is located near the Containment Equipment Hatch entrance, it was determined that reinstallation would occur near the end of the current refueling outage. It has since been reinstalled (on 11/13/2014). It is Callaway Plant's practice to remove SGAR0008 from service during a refueling outage to prevent potential false recordings due to heavy work performed near the seismic instrument.

Associated seismic instrumentation 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. This instrumentation ensures that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety (thus to determine if plant shutdown is required pursuant to Appendix A of 10 CFR Part 100).

Plans for Restoring the Instrument to OPERABLE status SGAR0008 was removed from service for calibration and to prevent false recordings which can occur during a refueling outage. As noted above, SGAR0008 was returned to service on 11113/2014, which is near the end of the current refueling outage.

Retrieved from "https://kanterella.com/w/index.php?title=ULNRC-06157,_Special_Report_2014-04:_Inoperability_of_a_Seismic_Instrument_for_Greater_than_30_Days&oldid=2040862"