Letter Sequence RAI |
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MONTHYEARML1001415002010-01-14014 January 2010
Acceptance Review Email, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: Acceptance Review
ULNRC-05694, Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions TAC ME2822 (LDCN 09-0039)2010-04-22022 April 2010
Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions TAC ME2822 (LDCN 09-0039)
Project stage: Request
ML1011301132010-04-23023 April 2010
Email, Request for Additional Information, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: RAI
ULNRC-05704, Application for Amendment to Facility Operating License NPF-30 Completion Time Extension for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions2010-05-14014 May 2010
Application for Amendment to Facility Operating License NPF-30 Completion Time Extension for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions
Project stage: Request
ULNRC-05724, Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System Instrumentation Functions (LDCN 09-0039 Supplement)2010-08-24024 August 2010
Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System Instrumentation Functions (LDCN 09-0039 Supplement)
Project stage: Supplement
ML1025102752010-09-0707 September 2010
Request for Additional Information, Round 2, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System Instrumentation, for Extension of Completion Times
Project stage: RAI
ML1025102702010-09-0707 September 2010
Email Request for Additional Information, Round 2, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System Instrumentation, for Extension of Completion Times
Project stage: RAI
ULNRC-05731, Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions (LDCN 09-0039 Supplement)2010-09-29029 September 2010
Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions (LDCN 09-0039 Supplement)
Project stage: Supplement
ML1029306742010-10-20020 October 2010
Request for Additional Information, Round 3, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: RAI
ML1029306712010-10-20020 October 2010
Email, Request for Additional Information, Round 3, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: RAI
ML1029803692010-10-25025 October 2010
Request for Additional Information, Round 4, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: RAI
ML1029803312010-10-25025 October 2010
Email, Request for Additional Information, Round 4, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times (ME2822)
Project stage: RAI
ULNRC-05738, Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions (LDCN 09-0039)2010-11-0404 November 2010
Application for Amendment to Facility Operating License NPF-30 Completion Time Extensions for TS3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions (LDCN 09-0039)
Project stage: Request
ML1030202792010-11-0505 November 2010
Notice of Meeting with Union Electric Company to Discuss Licensees Planned Responses to Staff Requests for Additional Information Related to Callaway Plants Request to Revise TS 3.3.2, ESFAS Instrumentation Functions
Project stage: RAI
ML1034701472010-12-16016 December 2010
Summary of Meeting with Union Electric Company to Discuss Licensees Planned Responses to Staff Requests for Additional Information Related to Callaway Plants Request to Revise TS 3.3.2, ESFAS Instrumentation Functions
Project stage: RAI
ML1035103132010-12-16016 December 2010
Draft TS Mark-up Provided by Licensee as Clarification of Mutual Understanding Following NRC-Licensee TS Modification Discussions at 11/18/10 Public Mtg Re CT Extensions for TS 3.3.2 License Amendment Request
Project stage: Draft Request
ML1035102982010-12-16016 December 2010
E-mail, Draft TS Mark-up Provided by Licensee as Clarification of Mutual Understanding Following NRC-Licensee TS Modification Discussions at 11/18/10 Public Mtg Re CT Extensions for TS 3.3.2 License Amendment Request
Project stage: Draft Request
ML1101204702011-01-12012 January 2011
Notice of Meeting with Union Electric Company to Discuss Licensees Planned Responses to Staff Requests for Additional Information Callaway Plants Request to Revise TS 3.3.2, ESFAS Instrumentation Functions
Project stage: RAI
ML1104001662011-02-22022 February 2011
Summary of Meeting with Union Electric Company to Discuss Licensees Planned Responses to Staff Requests for Additional Information Callaway Plants Request to Revise TS 3.3.2, ESFAS Instrumentation Functions
Project stage: RAI
ULNRC-05737, Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions, TAC No. ME2822 (LDCN 09-0039 Supplement)2011-02-23023 February 2011
Completion Time Extensions for TS 3.3.2 Engineered Safety Feature Actuation System (ESFAS) Instrumentation Functions, TAC No. ME2822 (LDCN 09-0039 Supplement)
Project stage: Supplement
ML1105405852011-02-23023 February 2011
Annual Reporting Form for Drug and Alcohol Tests, for Period Ending 2010
Project stage: Request
ML1116805362011-07-28028 July 2011
License Amendment, Issuance of Amendment No. 201, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times
Project stage: Approval
2010-04-23
[Table View] |
Email, Request for Additional Information, License Amendment Request, Revise Technical Specification 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, for Extension of Completion Times| ML101130113 |
| Person / Time |
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| Site: |
Callaway  |
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| Issue date: |
04/23/2010 |
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| From: |
Thadani M
Plant Licensing Branch IV |
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| To: |
Elwood T, Maglio S
Ameren Corp, Union Electric Co |
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| Thadani, M C, NRR/DORL/LP4, 415-1476 |
| References |
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| TAC ME2822 |
| Download: ML101130113 (3) |
|
Text
From:
Thadani, Mohan Sent:
Friday, April 23, 2010 9:15 AM To:
Maglio, Scott A; Elwood, Thomas B Cc:
Lent, Susan; Burkhardt, Janet; El-Bassioni, Adel; Harrison, Donnie
Subject:
RAI for Extension of Completion Time for Inoperable BOP ESFAS (TAC No.
ME2822)
Scott/Tom:
The NRC staff has completed its initial review of the Union Electric Company's application for extending the Callaway Plant, Unit 1 Completion Time for technical specification 3.3.2 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This change would add a new required action (Q1) for the restoration of an inoperable BOP ESFAS train to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> In addition, the Completion Time for TS 3.3.2.2 required actions J.1 and O.1 would be extended to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
Based on our review of the application, the NRC staff has identified areas where additional information is needed to complete our review. The request for additional information is provided below. Please provide your responses by May 15, 2010, so that the NRC staff can complete the requested action in a timely Manner.
Mohan C Thadani Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation (301) 415-1476 Mohan.Thadani@nrc.gov PROBABILISTIC RISK ASSESSMENT LICENSING BRANCH REQUEST FOR ADDITIONAL INFORMATION REGARDING CALLAWAY STATION REQUEST FOR INCREASE OF COMPLETION TIME FOR BOP ESFAS TO 24 HOURS (TAC No. ME 2822) 1-Internal events CDF The Callaway IPE reported a total CDF of 5.9 E-5 /yr. The internal flooding contribution was about 30% of this CDF value (~ 4.2 E-5 /yr) which is the base-line reported value for internal flooding CDF (section 4.1.1 Attachment 1 page 18). Please provide additional information regarding each of the revisions of the PRA since the IPE, including the plant and model changes, success criteria and supporting analysis changes, and associated baseline CDF and LERF.
2-Bayesian Analysis On page 17 Section 4.1.1 of Attachment 1, the BOP ESFAS train failure rate was estimated using Bayesian analysis, but no details or guidelines were provided. Please provide additional information regarding how the Bayesian analyses were performed and the data used in the analyses.
3-Operator Performance It was stated in Attachment 1 of the submittal, that continued operator training of the effect of completion time extension is planned. No details were provided about the nature of training or
supporting procedures. Please describe how the proposed amendment impacts the human error probabilities and how that was reflected in the model.
4-CCF The Sorensen Power Supplies and cards used in the BOP ESFAS appears to exist in other systems at the Callaway station. Please describe how inter-system CCF is address in the PRA for this potential condition and, if appropriate, please perform sensitivity analyses that address this potential inter-system CCF.
5-Internal Fire In the submittals section 4.1.2 of Attachment 1 it was stated that fire in the control room is dominated by human action including manual actuation. It was concluded in the evaluations that out of service BOP ESFAS does not impact the ability of the operator to manually actuate AFWS, and no change in risk was estimated. The Callaway IPEEE study actually identified the main control room as the most significant contributor to fire risk. Please discuss the credit given to the control room operator manual actions relevant to the baseline risk assessment.
E-mail Properties Mail Envelope Properties (0A64B42AAA8FD4418CE1EB5240A6FED11165C0695C)
Subject:
RAI for Extension of Completion Time for Inoperable BOP ESFAS (TAC No. ME2822)
Sent Date: 4/23/2010 9:15:20 AM Received Date: 4/23/2010 9:15:20 AM From: Thadani, Mohan Created By: Mohan.Thadani@nrc.gov Recipients:
SMaglio@ameren.com (Maglio, Scott A)
Tracking Status: None TElwood@ameren.com (Elwood, Thomas B)
Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)
Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)
Tracking Status: None Adel.El-Bassioni@nrc.gov (El-Bassioni, Adel)
Tracking Status: None Donnie.Harrison@nrc.gov (Harrison, Donnie)
Tracking Status: None
Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 18315 4/23/2010 Options Expiration Date:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: