Similar Documents at Cook |
|---|
Category:E-Mail
MONTHYEARML23361A1022023-12-21021 December 2023
Security Rule Exemption Request - ISFSI Docket No. Reference
ML23321A1222023-11-17017 November 2023
NRR E-mail Capture - Final RAI - D.C. Cook 1 & 2 - License Amendment Request Regarding Neutron Flux Instrumentation
ML23052A1502023-02-21021 February 2023
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request Regarding Neutron Flux Instrumentation
ML22307A2532022-11-0303 November 2022
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Verbal Authorization of Relief Request ISIR-5-06 Regarding Alternative to N-729-6 for RPV Head Visual Examination
ML22122A0902022-04-29029 April 2022
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request to Revise Technical Specifications Consistent with TSTF-554, Revision 1
ML22250A6712022-02-16016 February 2022
Outline Submittal Notification Email DC-Cook 2022
ML21341A6252021-12-0707 December 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request to Revise Technical Specifications Consistent with TSTF-577, Revision 1
ML21307A3352021-11-0303 November 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Final RAI - License Amendment Request Regarding Containment Water Level Instrumentation
ML21236A0262021-08-23023 August 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Acceptance of License Amendment Regarding Changes to Reactor Vessel Heatup and Cooldown Curves and Low Temperature Overpressure Protection System Requirements
ML21140A3052021-05-20020 May 2021
NRR E-mail Capture - Final RAI - D.C. Cook 1 & 2 - Relief Request ISIR-4-11, Impractical Examinations for the Fourth 10-Year ISI Interval
ML21113A2812021-04-23023 April 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request Regarding Containment Water Level Instrumentation
ML21089A0222021-03-24024 March 2021
DC Cook Power Operated Valves (POV) Preliminary Request for Information
ML21082A0262021-03-22022 March 2021
Acceptance of Relief Request ISIR-4-11, Impractical Examinations for the Fourth 10-Year ISI Interval
ML21049A2682021-02-16016 February 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Final RAI - License Amendment Request for One-Time Extension Containment Type a ILRT
ML21026A3472021-01-26026 January 2021
NRR E-mail Capture - Final RAI - D.C. Cook 1 & 2 - Relief Request REL-PP2 for Pump and Valve IST Fifth 10-year Interval
ML21008A4742021-01-0808 January 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Acceptance of License Amendment Request for One-Time Extension Containment Type a ILRT
ML20366A1012020-12-31031 December 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Acceptance of License Amendment Request for One-Time Deferral of Steam Generator Inspection
ML20316A0152020-11-0606 November 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of Relief Request REL-PP2 for Pump and Valve IST Fifth 10-year Interval
ML20318A0202020-10-16016 October 2020
NRR E-mail Capture - Regarding Public Comment on D.C. Cook, Unit 1 Request for Relief from Nozzle Inspections, Code Case N-729
ML20318A0192020-10-15015 October 2020
NRR E-mail Capture - (External_Sender) Supplemental Public Comment on D.C. Cook, Unit 1 Request for Relief from Nozzle Inspections, Code Case N-729
ML20289A7122020-10-15015 October 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 1 - Verbal Authorization of Relief Request ISIR-5-04 Regarding Alternative to N-729-6 for RPV Head Visual Examination
ML20290A4252020-10-15015 October 2020
Verbal Authorization of Relief Request ISIR-5-04 Regarding Alternative to N-729-6 for RPV Head Visual Examination
ML20318A0182020-10-0909 October 2020
NRR E-mail Capture - (External_Sender) Public Comment on D.C. Cook, Unit 1 Request for Relief from Nozzle Inspections, Code Case N-729
ML20289A1192020-10-0909 October 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of Relief Request for Alternative to N-729-4 for RPV Head Visual Examination
ML20181A4122020-06-29029 June 2020
NRR E-mail Capture - Final RAI - D.C. Cook 1 - One-Time Extension, Containment Type a ILRT Frequency
ML20149K6272020-05-28028 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment and Exemptions Regarding UFSAR 10 CFR 50.71(e)(4) Update Schedule (Epids: L-2020-LLA-0100, L-2020-LLE-0052, L-2020-LLE-0053)
ML20149K4332020-05-26026 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request to Revise Technical Specifications Consistent with TSTF-567, Revision 1
ML20141L8112020-05-20020 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of Relief Request Regarding Impracticality for Inservice Inspection for Certain Welds
ML20141L6062020-05-20020 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request to Revise Technical Specifications Consistent with TSTF-541, Revision 2
ML20136A5162020-05-15015 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance of License Amendment Request to Revise Technical Specifications Consistent with TSTF-412, Revision 3
ML20133J9662020-05-11011 May 2020
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 1 - Acceptance of License Amendment Regarding Changes to Reactor Vessel Heatup and Cooldown Curves and Low Temperature Overpressure Protection System Requirements
ML20232B4562020-04-27027 April 2020
Request for Supporting Information for the D.C. Cook SPRA Audit Review - Fragility Questions
ML20232B4432020-03-25025 March 2020
Request for Supporting Information for the D.C. Cook SPRA Audit Review - Plant Response Model Questions
ML19345F9382019-12-0909 December 2019
D.C. Cook 50.54(f) SPRA Submittal - Completeness Review Done and Path Forward
ML19333B8042019-11-29029 November 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Adopt TSTF-569 (L-2019-LLA-0248)
ML19309F9212019-11-0505 November 2019
Request for Eportal Access for Audit Review of the DC Cook SPRA Supporting Documents
ML19270E7372019-09-26026 September 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Adopt TSTF-421, Reactor Coolant Pump Flywheel Inspection Program
ML19207A4642019-07-26026 July 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Delete Diesel Generator Load Test Resistor Banks
ML19204A0962019-07-23023 July 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Request for Additional Information Related to Unit 2 Leak Before Break Analysis and Deletion of Containment Humidity Monitors for Unit Nos. 1 and 2
ML19211C3032019-07-0303 July 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 & 2 - Request for Additional Information Related to LAR to Address NSAL-15-1
ML19175A3032019-06-24024 June 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit No. 2 - Acceptance Review for LAR to Revise Battery Monitoring and Maintenance TS
ML19092A4802019-04-0202 April 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Adopt TSTF-563
ML19092A4792019-04-0202 April 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Address Issues Identified in Westinghouse Document NSAL-15-1
ML19084A0002019-03-20020 March 2019
NRR E-mail Capture - Resubmitted: Draft Request for Additional Information DC Cook Unit 1 - Leak-Before-Break LAR
ML19072A1432019-03-12012 March 2019
NRR E-mail Capture - Resubmitted: Draft Request for Additional Information DC Cook Unit 1 - Leak-Before-Break LAR
ML19011A1382019-01-11011 January 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Revise Environmental Technical Specifications (L-2018-LLA-0570)
ML19011A3512019-01-11011 January 2019
NRR E-mail Capture - Request for Additional Information DC Cook Unit 1 Leak Before Break Amendment
ML19009A5402019-01-0909 January 2019
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Revise Battery Monitoring and Maintenance TS
ML18313A0802018-11-0808 November 2018
NRR E-mail Capture - D.C. Cook Units 1 and 2 - RAI for RPV Threads in Flange Alternative
ML18275A0532018-10-0101 October 2018
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Acceptance Review for LAR to Revise Battery Monitoring and Maintenance TS
2023-02-21
[Table view] |
Text
NRR-PMDAPEm Resource From: dmburgoyne@aep.com Sent: Thursday, January 10, 2013 2:18 PM To: Wengert, Thomas Cc: hletheridge@aep.com
Subject:
Fw: DC Cook U2 - Review of 2012 SG Tube Inspection Report (TAC No. ME9720)
Good afternoon, In December you sent questions to us regarding the U2 SG Tube Inspection Report. Due to the holidays and vacations, we were unable to schedule a conference call; however, the lead for the technical organization drafted the following responses to the questions. If you would still like to have a conference call, please let me know and we will get that arranged.
- 1. In the SG tube inspection report the licensee stated that secondary side inspections were performed in all four SGs, and then described the scope of inspections. When discussing the scope of inspection, you specifically discussed SG23. Please clarify which inspections were performed in each SG and which were limited to just SG 23.
Response
Visual inspection of the divider lane and annulus region at the top of the tubesheet was performed in all four steam generators. Select inner bundle passes i.e. inserting a remote video probe into the tube bundle at the top of the tubesheet was also performed in all four SGs, primarily to examine the sludge pile region. The reference to SG 23 was intended to denote that this was the only steam generator in which FOSAR (foreign object search and retrieval) efforts were performed. The need for FOSAR resulted from two new possible loose part signals that were detected during the eddy current inspection, both in SG 23. As a result, FOSAR was performed to examine these specific locations. A sludge rock was found in one location and nothing was found at the second location. The sludge rock could not be removed and was dispositioned to be left in service. Bounding eddy current examinations were performed in these regions and no additional possible loose part signals were identified. No tube wear was detected at the location of the possible loose part signals nor in any of the bounding tubes examined.
- 2. In a response to a request for additional information dated August 5, 2008 on the 2007 SG tube inservice inspections (ADAMS Accession No. ML082390706), you reported that an area of minor surface pitting was found on the underside of the primary separator diffuser window (also known as the primary separator intermediate plate assembly) on SG 22. However, in your October 2, 2012, letter you indicated that steam drum inspections performed in two SGs during the previous inspection identified no degradation or abnormal conditions. Please clarify.
Response
The minor pitting was reported on SG 22 during the previous inspection as described above. Phrasing in our October 2, 2012 letter should have denoted this condition and clarified that no significant degradation had previously been noted during steam drum inspections. Due to the inconsequential nature of the pitting, it was not considered a degradation mechanism of concern nor an abnormal condition on a steam generator that has been in service since 1989.
Thank you, Danielle Burgoyne Licensing Activity Coordinator Donald C. Cook Nuclear Plant Phone: 269.466.2871 1
Forwarded by Helen L Etheridge/BC1/AEPIN on 12/19/2012 08:25 AM -----
"Wengert, Thomas" <Thomas.Wengert@nrc.gov> To "hletheridge@aep.com" <hletheridge@aep.com>
cc "mkscarpello@aep.com" <mkscarpello@aep.com>, "jrwaters@aep.com" 12/18/2012 11:29 AM <jrwaters@aep.com>
Subject DC Cook U2 - Review of 2012 SG Tube Inspection Report (TAC No. ME9720)
- Helen, The staff in the NRCs Division of Engineering are reviewing your October 2, 2012, submittal concerning the 2012 Steam Generator Tube Inspection Report for DC Cook Unit 2 (ADAMS Accession No. ML12284A278) and would like clarification of the submittal as follows:
- 1. In the SG tube inspection report the licensee stated that secondary side inspections were performed in all four SGs, and then described the scope of inspections. When discussing the scope of inspection, you specifically discussed SG23. Please clarify which inspections were performed in each SG and which were limited to just SG 23.
- 2. In a response to a request for additional information dated August 5, 2008 on the 2007 SG tube inservice inspections (ADAMS Accession No. ML082390706), you reported that an area of minor surface pitting was found on the underside of the primary separator diffuser window (also known as the primary separator intermediate plate assembly) on SG 22. However, in your October 2, 2012, letter you indicated that steam drum inspections performed in two SGs during the previous inspection identified no degradation or abnormal conditions. Please clarify.
DC Cook can provide a response to these clarification questions either by e-mail or a phone call, whichever you prefer.
The NRC staff will document the response in our steam generator report review.
Please contact me if you have questions or if you would like to have a conference call with the NRC staff to clarify.
- Regards, Tom Wengert Project Manager - DC Cook and Prairie Island USNRC NRR/DORL/LPL3-1 (301) 415-4037 This e-mail message and all attachments transmitted with it from the Nuclear Generation Group of American Electric Power are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.
2
Hearing Identifier: NRR_PMDA Email Number: 575 Mail Envelope Properties (OFCF168FF0.3AD2A631-ON85257AEF.006979B5-85257AEF.006A075E)
Subject:
Fw: DC Cook U2 - Review of 2012 SG Tube Inspection Report (TAC No.
ME9720)
Sent Date: 1/10/2013 2:18:09 PM Received Date: 1/10/2013 2:19:06 PM From: dmburgoyne@aep.com Created By: dmburgoyne@aep.com Recipients:
"hletheridge@aep.com" <hletheridge@aep.com>
Tracking Status: None "Wengert, Thomas" <Thomas.Wengert@nrc.gov>
Tracking Status: None Post Office: aep.com Files Size Date & Time MESSAGE 5622 1/10/2013 2:19:06 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
