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{{#Wiki_filter:August 10, 2006Mr. Karl W. SingerChief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
{{#Wiki_filter:August 10, 2006 Mr. Karl W. Singer Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801


==SUBJECT:==
==SUBJECT:==
WATTS BAR NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONALINFORMATION REGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449) (TAC NOS. MC9271)  
WATTS BAR NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449) (TAC NOS. MC9271)


==Dear Mr. Singer:==
==Dear Mr. Singer:==


By letter dated December 15, 2005, Tennessee Valley Authority (TVA, the licensee), submitteda request to revise the Watts Bar Nuclear Plant (WBN) Unit 1 technical specification (TS) requirements consistent with Technical Specification Task Force (TSTF) Standard TechnicalSpecification Change Traveler, TSTF-449, "Steam Generator Tube Integrity," Revision 4. Inaddition, by letter dated June 12, 2006, the licensee responded to the Nuclear RegulatoryCommission's Request for Additional Information (RAI) on this subject.The staff has reviewed the information contained in your letter dated June 12, 2006, anddetermined the need for additional information to complete its review.In order for the NRC staff to complete its review, we request that TVA provide responses to theenclosed RAI within 30 days of receipt of this letter. If you have any questions about this material, please contact me at (301) 415-1364.Sincerely,/RA/ Douglas V. Pickett, Senior Project ManagerPlant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-390
By letter dated December 15, 2005, Tennessee Valley Authority (TVA, the licensee), submitted a request to revise the Watts Bar Nuclear Plant (WBN) Unit 1 technical specification (TS) requirements consistent with Technical Specification Task Force (TSTF) Standard Technical Specification Change Traveler, TSTF-449, "Steam Generator Tube Integrity," Revision 4. In addition, by letter dated June 12, 2006, the licensee responded to the Nuclear Regulatory Commissions Request for Additional Information (RAI) on this subject.
The staff has reviewed the information contained in your letter dated June 12, 2006, and determined the need for additional information to complete its review.
In order for the NRC staff to complete its review, we request that TVA provide responses to the enclosed RAI within 30 days of receipt of this letter. If you have any questions about this material, please contact me at (301) 415-1364.
Sincerely,
                                              /RA/
Douglas V. Pickett, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-390


==Enclosure:==
==Enclosure:==
Request for Additional Informationcc w/enclosure:  See next page


ML062180075                       NRR-088OFFICELPL2-2/PMLPL2-2/LACSGB/BCLPL2-2/BCNAMEDPickettRSola PKlein for AHiserLRaghavanDATE08/ 08 /0608/ 08/0608/ 08/0608/10 /06 Mr. Karl W. Singer Tennessee Valley Authority   WATTS BAR NUCLEAR PLANT cc:Mr. Ashok S. Bhatnagar, Senior Vice President Nuclear Operations Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801   Mr. Larry S. Bryant, Vice PresidentNuclear Engineering & Technical Services Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN  37402-2801Mr. Robert J. Beecken, Vice PresidentNuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801   Mr. Michael D. SkaggsSite Vice President Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381General CounselTennessee Valley Authority ET 11A 400 West Summit Hill DriveKnoxville, TN 37902Mr. John C. Fornicola, ManagerNuclear Assurance and Licensing Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN  37402-2801Mr. Glenn W. Morris, Manager Corporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801Mr. Paul L. Pace, ManagerLicensing and Industry Affairs Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381Mr. Jay Laughlin, Plant ManagerWatts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381Senior Resident InspectorWatts Bar Nuclear Plant U.S. Nuclear Regulatory Commission 1260 Nuclear Plant Road Spring City, TN 37381County Executive 375 Church Street Suite 215 Dayton, TN 37321County Mayor P. O. Box 156 Decatur, TN 37322Mr. Lawrence E. Nanney, DirectorDivision of Radiological Health Dept. of Environment & Conservation Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532Ms. Ann P. Harris341 Swing Loop Road Rockwood, Tennessee 37854 REQUEST FOR ADDITIONAL INFORMATIONWATTS BAR NUCLEAR PLANT UNIT 1APPLICATION FOR TECHNICAL SPECIFICATION IMPROVEMENTREGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449)DOCKET NO. 50-390TAC NO. MC9271Tennessee Valley Authority's letter dated June 12, 2006, responded to the staff's Request forAdditional Information concerning proposed changes to the Watts Bar Technical Specifications related to steam generator tube integrity. In the response to Question 2, the licensee indicatedthat the second sentence in the accident induced leakage performance criteria was consistentwith the Watts Bar design and licensing basis, therefore, the original proposed wording was adequate. Although the wording may be consistent with the design and licensing basis, thesecond sentence in the accident induced leakage performance criteria in TSTF-449 is not intended to be an interpretation of the current design and licensing basis. Rather, the second sentence (in the accident induced performance criteria in TSTF 449) is intended to ensure that the potential for induced leakage during severe accidents will be maintained at a level that willnot increase risk. This is discussed in the staff's generic safety evaluation of TSTF-449.As a result, the staff requests the licensee to discuss its plans to modify its proposal to beconsistent with TSTF-449 or justify why only a limit on the "faulted" steam generator is considered necessary to maintain risk at acceptable levels during the severe accident scenarios discussed in the staff's generic safety evaluation of TSTF-449.Enclosure}}
Request for Additional Information cc w/enclosure: See next page
 
ML062180075                                       NRR-088 OFFICE          LPL2-2/PM          LPL2-2/LA            CSGB/BC            LPL2-2/BC NAME            DPickett            RSola          PKlein for AHiser      LRaghavan DATE          08/ 08 /06          08/ 08/06            08/ 08/06            08/10 /06 Mr. Karl W. Singer Tennessee Valley Authority                     WATTS BAR NUCLEAR PLANT cc:
Mr. Ashok S. Bhatnagar, Senior Vice President Mr. Glenn W. Morris, Manager Nuclear Operations                           Corporate Nuclear Licensing Tennessee Valley Authority                       and Industry Affairs 6A Lookout Place                             Tennessee Valley Authority 1101 Market Street                            4X Blue Ridge Chattanooga, TN 37402-2801                    1101 Market Street Chattanooga, TN 37402-2801 Mr. Larry S. Bryant, Vice President Nuclear Engineering & Technical Services     Mr. Paul L. Pace, Manager Tennessee Valley Authority                   Licensing and Industry Affairs 6A Lookout Place                             Watts Bar Nuclear Plant 1101 Market Street                           Tennessee Valley Authority Chattanooga, TN 37402-2801                   P.O. Box 2000 Spring City, TN 37381 Mr. Robert J. Beecken, Vice President Nuclear Support                              Mr. Jay Laughlin, Plant Manager Tennessee Valley Authority                   Watts Bar Nuclear Plant 6A Lookout Place                              Tennessee Valley Authority 1101 Market Street                            P.O. Box 2000 Chattanooga, TN 37402-2801                    Spring City, TN 37381 Mr. Michael D. Skaggs                        Senior Resident Inspector Site Vice President                          Watts Bar Nuclear Plant Watts Bar Nuclear Plant                       U.S. Nuclear Regulatory Commission Tennessee Valley Authority                   1260 Nuclear Plant Road P.O. Box 2000                                 Spring City, TN 37381 Spring City, TN 37381 County Executive General Counsel                              375 Church Street Tennessee Valley Authority                    Suite 215 ET 11A                                        Dayton, TN 37321 400 West Summit Hill Drive Knoxville, TN 37902                          County Mayor P. O. Box 156 Mr. John C. Fornicola, Manager                Decatur, TN 37322 Nuclear Assurance and Licensing Tennessee Valley Authority                    Mr. Lawrence E. Nanney, Director 6A Lookout Place                              Division of Radiological Health 1101 Market Street                            Dept. of Environment & Conservation Chattanooga, TN 37402-2801                    Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532 Ms. Ann P. Harris 341 Swing Loop Road Rockwood, Tennessee 37854
 
REQUEST FOR ADDITIONAL INFORMATION WATTS BAR NUCLEAR PLANT UNIT 1 APPLICATION FOR TECHNICAL SPECIFICATION IMPROVEMENT REGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449)
DOCKET NO. 50-390 TAC NO. MC9271 Tennessee Valley Authoritys letter dated June 12, 2006, responded to the staffs Request for Additional Information concerning proposed changes to the Watts Bar Technical Specifications related to steam generator tube integrity. In the response to Question 2, the licensee indicated that the second sentence in the accident induced leakage performance criteria was consistent with the Watts Bar design and licensing basis, therefore, the original proposed wording was adequate. Although the wording may be consistent with the design and licensing basis, the second sentence in the accident induced leakage performance criteria in TSTF-449 is not intended to be an interpretation of the current design and licensing basis. Rather, the second sentence (in the accident induced performance criteria in TSTF 449) is intended to ensure that the potential for induced leakage during severe accidents will be maintained at a level that will not increase risk. This is discussed in the staff's generic safety evaluation of TSTF-449.
As a result, the staff requests the licensee to discuss its plans to modify its proposal to be consistent with TSTF-449 or justify why only a limit on the "faulted" steam generator is considered necessary to maintain risk at acceptable levels during the severe accident scenarios discussed in the staff's generic safety evaluation of TSTF-449.
Enclosure}}

Latest revision as of 03:02, 14 March 2020

RAI Re Steam Generator Tube Integrity (TSTF-449)
ML062180075
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 08/10/2006
From: Pickett D
NRC/NRR/ADRO/DORL/LPLII-2
To: Singer K
Tennessee Valley Authority
Pickett D, NRR/DORL, 415-1364
References
TAC MC9271
Download: ML062180075 (4)
v • d • e


Text

August 10, 2006 Mr. Karl W. Singer Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

WATTS BAR NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449) (TAC NOS. MC9271)

Dear Mr. Singer:

By letter dated December 15, 2005, Tennessee Valley Authority (TVA, the licensee), submitted a request to revise the Watts Bar Nuclear Plant (WBN) Unit 1 technical specification (TS) requirements consistent with Technical Specification Task Force (TSTF) Standard Technical Specification Change Traveler, TSTF-449, "Steam Generator Tube Integrity," Revision 4. In addition, by letter dated June 12, 2006, the licensee responded to the Nuclear Regulatory Commissions Request for Additional Information (RAI) on this subject.

The staff has reviewed the information contained in your letter dated June 12, 2006, and determined the need for additional information to complete its review.

In order for the NRC staff to complete its review, we request that TVA provide responses to the enclosed RAI within 30 days of receipt of this letter. If you have any questions about this material, please contact me at (301) 415-1364.

Sincerely,

/RA/

Douglas V. Pickett, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-390

Enclosure:

Request for Additional Information cc w/enclosure: See next page

ML062180075 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA CSGB/BC LPL2-2/BC NAME DPickett RSola PKlein for AHiser LRaghavan DATE 08/ 08 /06 08/ 08/06 08/ 08/06 08/10 /06 Mr. Karl W. Singer Tennessee Valley Authority WATTS BAR NUCLEAR PLANT cc:

Mr. Ashok S. Bhatnagar, Senior Vice President Mr. Glenn W. Morris, Manager Nuclear Operations Corporate Nuclear Licensing Tennessee Valley Authority and Industry Affairs 6A Lookout Place Tennessee Valley Authority 1101 Market Street 4X Blue Ridge Chattanooga, TN 37402-2801 1101 Market Street Chattanooga, TN 37402-2801 Mr. Larry S. Bryant, Vice President Nuclear Engineering & Technical Services Mr. Paul L. Pace, Manager Tennessee Valley Authority Licensing and Industry Affairs 6A Lookout Place Watts Bar Nuclear Plant 1101 Market Street Tennessee Valley Authority Chattanooga, TN 37402-2801 P.O. Box 2000 Spring City, TN 37381 Mr. Robert J. Beecken, Vice President Nuclear Support Mr. Jay Laughlin, Plant Manager Tennessee Valley Authority Watts Bar Nuclear Plant 6A Lookout Place Tennessee Valley Authority 1101 Market Street P.O. Box 2000 Chattanooga, TN 37402-2801 Spring City, TN 37381 Mr. Michael D. Skaggs Senior Resident Inspector Site Vice President Watts Bar Nuclear Plant Watts Bar Nuclear Plant U.S. Nuclear Regulatory Commission Tennessee Valley Authority 1260 Nuclear Plant Road P.O. Box 2000 Spring City, TN 37381 Spring City, TN 37381 County Executive General Counsel 375 Church Street Tennessee Valley Authority Suite 215 ET 11A Dayton, TN 37321 400 West Summit Hill Drive Knoxville, TN 37902 County Mayor P. O. Box 156 Mr. John C. Fornicola, Manager Decatur, TN 37322 Nuclear Assurance and Licensing Tennessee Valley Authority Mr. Lawrence E. Nanney, Director 6A Lookout Place Division of Radiological Health 1101 Market Street Dept. of Environment & Conservation Chattanooga, TN 37402-2801 Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532 Ms. Ann P. Harris 341 Swing Loop Road Rockwood, Tennessee 37854

REQUEST FOR ADDITIONAL INFORMATION WATTS BAR NUCLEAR PLANT UNIT 1 APPLICATION FOR TECHNICAL SPECIFICATION IMPROVEMENT REGARDING STEAM GENERATOR TUBE INTEGRITY (TSTF-449)

DOCKET NO. 50-390 TAC NO. MC9271 Tennessee Valley Authoritys letter dated June 12, 2006, responded to the staffs Request for Additional Information concerning proposed changes to the Watts Bar Technical Specifications related to steam generator tube integrity. In the response to Question 2, the licensee indicated that the second sentence in the accident induced leakage performance criteria was consistent with the Watts Bar design and licensing basis, therefore, the original proposed wording was adequate. Although the wording may be consistent with the design and licensing basis, the second sentence in the accident induced leakage performance criteria in TSTF-449 is not intended to be an interpretation of the current design and licensing basis. Rather, the second sentence (in the accident induced performance criteria in TSTF 449) is intended to ensure that the potential for induced leakage during severe accidents will be maintained at a level that will not increase risk. This is discussed in the staff's generic safety evaluation of TSTF-449.

As a result, the staff requests the licensee to discuss its plans to modify its proposal to be consistent with TSTF-449 or justify why only a limit on the "faulted" steam generator is considered necessary to maintain risk at acceptable levels during the severe accident scenarios discussed in the staff's generic safety evaluation of TSTF-449.

Enclosure

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