ML20203A081

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Forwards Request for Addl Info Re Review of Beaver Valley Power Station,Unit 1 License Amend to Allow one-time Extension of Steam Generator Insp Interval
ML20203A081
Person / Time
Site: Beaver Valley
Issue date: 02/04/1999
From: Dan Collins
NRC (Affiliation Not Assigned)
To: Cross J
DUQUESNE LIGHT CO.
References
TAC-MA4149, NUDOCS 9902090281
Download: ML20203A081 (5)


Text

.- - ._ -. - . . _ _ - _ .

4j E Mr. J. E. Cross February 4, 1999 '

Presid:nt-Gener: tion Group  !

Duquesne Light Comp ny Post Office Box 4 Shippingport, PA 15077

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAl) REGARDING REVIEW OF BEAVER VALLEY POWER STATION, UNIT NO.1 (BVPS-1) LICENSE AMENDMENT TO ALLOW ONE-TIME EXTENSION OF STEAM GENERATOR INSPECTION INTERVAL (TAC NO. MA4149) l

Dear Mr. Cross:

By letter dated November 11,1998, Duquesne Light Company (DLC) submitted for staff review an amendment request with a proposed license condition which would allow a one-time extension of the steam generator (SG) inspection interval of technical specification (TS) 4.4.5.3.b to coincide with the fuel cycle. The TS requirements of 4.4.5.3.b. are intended to  ;

ensure the SG tubes maintain margins consistent with Regulatory Guide 1.121. The Nuclear Regulatory Commission (NRC) staff has been reviewing the requested amendment, however, l we have determined that additionalinformation is required to complete our review. The I requested information outlined in the enclosure is needed to ensure that there is adequate i assurance that the necessary margins will continue to be maintained throughout the period of the extended operation. This was discussed during a January 21,1999, conference call between NRC technical staff and Messrs. Greg Kammerdeiner, Gary Alberti, Lyle Berry, et al.

of your staff. Subsequently, in discussions with Lyle Berry on January 27,1E99, a mutually agreeable target date for your response of February 26,1999, was established. This schedule will support timely completion of the NRC's reviews of this amendment request. If circumstances result in the need to revise the target date, please call me at the earliest possible opportunity. i if you have any questions regarding inis request, please contact me at (301) 415-1427.  !

Sincerely, l Original singned by:

Daniel S. Collins, Project Manager

  • e ate 1-1 9902090281 990204 ..

PDR ADOCK 05000334 Division of Reactor Projects - 1/11 G PDR Office of Nuclear Reactor Regulation Docket No. 50-334 l

Enclosure:

Request for Additional Information

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cc w/ encl: See next page DISTRIBUTION: pi Docket File MO'Brien~ ' j (j GACRS U

! o!!BLIC DCollins PEselgroth, RGN-l ,-.c -n t' m'~~~ ^ " 7 l PDI 1 Reading EMurphy dl'..fL -

JZv olinski AKeim SBajwa OGC OFFICE PDh1/PM PDI-1/LA PDI-1/D .

NAME DhnIcc bBrfeb SBajwak DATE 1 /'[/99 2r/N/99 f/N /99 l OFFICIAL RECORD COPY \

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7

, l . Mr. J. E. Cross February 4,1999

/- PresidInt-G:ntr-tion Group Duquisna Light C mp:ny 4 Post Office Box 4 W Shippingport, PA 15077

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING REVIEW OF BEAVER VALLEY POWER STATION, UNIT NO.1 (BVPS-1) LICENSE AMENDMENT TO ALLOW ONE-TIME EXTENSION OF STEAM GENERATOR INSPECTION INTERVAL (TAC NO. MA4149)

Dear Mr. Cross:

l By letter dated November 11,1998, Duquesne Light Company (DLC) submitted for staff review an amendment request with a proposed license condition which would allow a one-time extension of the steam generator (SG) inspection interval of technical specification (TS) 4.4.5.3.b to coincide with the fuel cycle. The TS requirements of 4.4.5.3.b. are intended to ensure the SG tubes maintain margins consistent with Regulatory Guide 1.121. The Nuclear Regulatory Commission (NRC) staff has been reviewing the requested amendment, however, ,

we have determined that additionalInformation is required to complete our review. The requested information outlined in the enclosure is needed to ensure that there is adequate assurance that the necessary margins will continue to be maintained throughout the period of the extended operation. This was discussed during a January 21,1999, conference call between NRC technical staff and Messrs. Greg Kammerdeiner, Gary Alberti, Lyle Berry, et al.

of your staff. Subsequently, in discussions with Lyle Berry on January 27,1999, a mutually agreeable target date for your response of February 26,1999, was established. This schedule will support timely completion of the NRC's reviews of this amendment request. If l

circumstances result in the need to revise the target date, please call me at the earliest possible opportunity.

If you have any questions regarding this request, please contact me at (301) 415-1427. i Sincerely, Original singned by: )

Daniel S. Collins, Project Manager Project Directorate 1-1 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50-334

Enclosure:

Request for Additional information cc w/ encl: See next page i DISTRIBUTION:

Docket File MO'Brien ACRS i PUBLIC DCollins PEselgroth, RGN-l PDI-1 Reading EMurphy JZwolinski . AKeim SBajwa OGC OFFICE PDid/PM PDI .1/LA PDI-1/D .

I NAME DbnIlec bBr SBaiwak DATE 1 /f/99 )/N/99 k/b /99 OFFICIAL RECORD COPY \

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7 a -4 )

{ $*Uh j $ UNITED STATES '

, s* j NUCLEAR REGULATORY COMMISSION I

WASHINGTON, D.C. 20565 4 001

% . . . . . p! February 4,1999 Mr. J. E. Cross President-Generation Group Duquesne Light Company Post Office Box 4 Shippingport, PA 15077

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING REVIEW OF i BEAVER VALLEY POWER STATION, UNIT NO.1 (BVPS-1) LICENSE l AMENDMENT TO ALLOW ONE-TIME EXTENSION OF STEAM GENERATOR INSPECTION INTERVAL (TAC NO. MA4149)

Dear Mr. Cross:

By letter dated November 11,1998, Duquesne Light Company (DLC) submitted for staff review an amendment request with a proposed license condition which would a!!ow a one-time extension of the steam generator (SG) inspection interval of technical specification (TS) 4.4.5.3.b to coincide with the fuel cycle. The TS requirements of 4.4.5.3.b. are intended to ensure the SG tubes maintain margins consistent with Regulatory Guide 1.121. The Nuclear Regulatory Commission (NRC) staff has been reviewing the requested amendment, however, i we have determined that additionalinformation is required to complete our review. The '

requested information outlined in the enclosure is needed to ensure that there is adequate assurance that the necessary margins will continue to be maintained throughcut the period of i the extended operation. This was discussed during a January 21,1999, conference call between NRC technical staff and Messrs. Greg Kammerdeiner, Gary Alberti, Lyle Berry, et al.

of your staff. Subsequently, in discussions with Lyle Berry on January 27,1999, a mutually agreeable target date for your response of February 26,1999, was established. This schedule will support timely completion of the NRC's reviews of this amendment request. If circumstances result in the need to revise the target date, please call me at the earliest possible opportunity.

If you have any questions regarding this request, please contact me at (301) 415-1427.

Sincerely, h

1

/.2 1 C 0Ac _

Daniel S. Collins, Project Manager Project Directorate 1-1 l

Division of Reactor Projects - 1/11 i Office of Nuclear Reactor Regulation

! Docket No. 50-334

Enclosure:

Request for Additional Information cc w/ encl: See next page l

f.

!. i i

J. E. Cross Beaver Valley Power Station, Units 1 & 2 Duquesne Ught Company cc:

, Jay E. Silberg, Esquire Bureau of Radiation Protection i Shaw, Pittman, Potts & Trowbndge Pennsylvania Department of 2300 N Street, NW. Environmental Resources Washington, DC 20037 ATTN: Michael P. Murphy ,

Post Office Box 2063 Director-Safety and ucensing l Harrisburg, PA 17120 '

Department (BV-A)

Duquesne Ught Company Mayor of the Borough of Beaver Valley Power Station Shippingport l PO Box 4 Post Office Box 3 Shippingport, PA .15077 Shippingport, PA 15077 Commissioner Roy M. Smith Regional Administrator, Region l ,

West Virginia Department of Labor U.S. Nuclear Regulatory Commission i Building 3, Room 319 475 Allendale Road Capitol Complex King of Prussia, PA 19406 t

Charleston, WV 25305 Resident inspector Director, Utilities Department U.S. Nuclear Regulatory Commission Public Utilities Commission Post Office Box 298 .

180 East Broad Street Shippingport, PA 15077 l Columbus, OH 43266-0573 Director, Pennsylvania Emergency Duquesne Ught Company  ;

Management Agency Beaver Valley Power Station i Post Office Box 3321 PO Box 4 Harrisburg, PA 17105-3321 Shippingport, PA 15077 ATTN: S. C. Jain, Senior Vice President ,

Ohio EPA-DERR Nuclear Services (BV-A)

ATTN: Zack A.Clayton Post Office Box 1049 Mr. J. A. Huitz, Manager Columbus, OH 43266-0149 Projects & Support Services First Energy Dr. Judith Johnsrud 76 South Main Street National Energy Committee Akron, OH 44308 Sierra Club 433 Orlando Avenue State College, PA 16803 1

Duquesne Light Company Beaver Valley Power Station l

PO Box 4 Shippingport, PA ' 15077 ATTN:' Kevin L Ostrowski, Division Vice L President, Nuclear Operations Group and Plant Manager (BV-SOSB-7)

I REQUEST FOR ADDITIONAL INFORMATION i

REGARDING REVIEW OF I LICENSI.:JMENDMENTTO ALLOW ONE TIME EXTENSION OF STEAM GENERATOR l INSPECTION INTERVAL

)

BEAVER VALLEY POWER STATION. UNIT NO.1 DOCKET NO. 50-334 i

By letter dated November 11,1998, Duquesne Light Company (DLC) submitted for staff review an amendment request with a proposed license conditior,which would allow a one-time extension of the steam generator (SG) inspection interval of technical specification (TS) 4.4.5.3.b to coincide with the fuel cycle. The TS requirements of 4.4.5.3.b. are intended to ensure the SG tubes maintain margins consistent with Regulatory Guide 1.121. The NRC staff  !

has initiated a review of the proposed amendment but has determined that additional information is required to complete the review.' The NRC staff requests that DLC provide responses to the following te ensure that there is adequate assurance that the necessary  !

margins will continue to be maintained throughout the period of the extended operation.

1) For each degradation mechanism, provide a general description of the methodology for performing the operational assessment for End Of Cycle 13 and a description of the flaw growth rate and addy current measurement error allowances used in the i assessments and how they were determined. For Primary Water Stress Corrosion  !

Cracking (PWSCC), the description should include an explanation of the model for assessing accident leak rate and the technical basis for the model.

2) . What degradation mechanisms were in-situ tested? How were samples selected? f How were conclusions derived? For the case of PWSCC at tight radius U-bends, what  :

were the leak rates when tested at the postulated Main Steam Line Break accident pressure?

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