ML20153C387

Application for Amend to License NPF-12,revising TS 3.1.3.1, 3.2.2,3.2.3 & 6.9.1.11 by Incorporating W Beacon TR WCAP-12472-P-A to Augment Functionality of Flux Mapping Sys at VC Summer When Thermal Power Is Greater than 25% RTP

ML20153C387
Person / Time
Site:	Summer
Issue date:	09/18/1998
From:	Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Padovan L NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20153C391	List: ML20153C387 ML20153C400
References
RC-98-168, NUDOCS 9809240076
Download: ML20153C387 (11)

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,. i+ Attention: Mr. i.. M. Padovan

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Subject:

-VIRGIL C. SUMMER NUCLEAR STATION

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..- Ty$' OPERATING LICENSE NO. NPF-12 (i@h}gw%^

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o TECHNICAL SPECIFICATION CHANGE REQUEST BEST ESTIMATE ANALYZER FOR CORE OPERATIONS -

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< South Carolina Electric & Gas Company (SCE&G), acting for itself and as

. < agent for South Carolina Public Service Authority, hereby requests an

$@%@sijno 66is&Co? amendment to the Virgil C. Summer Nuclear Station (VCS i

MeO SMim' Specifications (TS). This request is being submitted pursuant to 10 CFR i { N ig , 50.90.

[% my s &; g i WWW Jk < %"W* Westinghouse submitted the BEACON topical report (WCAP-12472-P-A) to the yB0335A34 :8i ' NRC and the NRC issued an SER approving the topical on February 16,1994.

, BEACON is a core power distribution monitoring and support system based on jle 1N( ' _j a three-dimensional nodal code. It is used to provide data reduction for incore

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i neutron flux maps, core parameter analysis and follow, and core prediction.

j BEACON is approved to provide continuous core monitoring capabilities. The fi ,

s ' primary role for BEACON at VCSNS will be to augment the functionality of the M R: %#* a flux mapping system when Thermal Power is greater than 25% RTP for the fM j purpose of power distribution surveillances. y) m M j

[# [_ . The WCAP contained revised Technical Specification pages to d h

MQW< Mgy%, y features of BEACON, the Technical Specification pages included in the WCAP y.

Mg will only be incorporated where applicable.

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l September 18,1998 NEd A SCANA COMPANY RC-98-0168 l

l Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 l Attention: Mr. L. M. Padovan Gentlemen:

Gary J. Lylor i h[lf$ ux3

Subject:

VIRGIL C. SUMMER NUCLEAR STATION i DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 1 TECHNICAL SPECIFICATION CHANGE REQUEST BEST ESTIMATE ANALYZER FOR CORE OPERATIONS - ,

NUCLEAR (BEACON) - TSP 970006 South Carolina Electric & Gas Company (SCE&G), acting for itself and as agent for South Carolina Public Service Authority, hereby requests an south co*c fintrid Gas to amendment to the Virgil C. Summer Nuclear Station (VCSNS) Technical W il .s re cuda smion Specifications (TS). This request is being submitted pursuant to 10 CFR I knunwme, south (cdag 50.90.

m6s Westinghouse submitted the BEACON topical report (WCAP-12472-P-A) to the yyy NRC and the NRC issued an SER approving the topical on February 16,1994.

m. BEACON is a core power distribution monitoring and support system based on /

a three-dimensional nodal code. It is used to provide data reduction for incore neutron flux maps, core parameter analysis and follow, and core prediction.

'j BEACON is approved to provide continuous core monitoring capaoilities. The ,

primary role for BEACON at VCSNS will be to augment the functionality of the I flux mapping system when Thermal Power is greater than 25% RTP for the j j purpose of power distribution surveillances.

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The WCAP contained revised Technical Specification pages to depict the full t utilization of BEACON. Because VCSNS will utilize only some of the approved features of BEACON, the Technical Specification pages included in the WCAP 4 will only be incorporated where applicable. '

9809240076 980918 PDR ADOCK 05000395 p PDfi

4 Document Control Dssk '

TSP 970006 1

. RC-98-0168 Page 2 of 3- l l

This change proposes to revise Technical Specification 3.1.3.1, " Movable Control Assemblies - Group Height," 3.2.2, " Heat Flux Hot Channel Factor," 3.2.3, "RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor," and 6.9.1 , " Core Operating I Limits Report" to incorporate BEACON to augment the functionahiy of the flux mapping system at VCSNS when Thermal Power is greater than 25% Rated Thermal Power i (RTP).

, A new specification and the associated bases scction 3.3.3.11 will be added to the VCSNS Technical Specifications to provide operability requirements for the Power Distribution Monitoririg System (PDMS) as recommended in the BEACON topical report.

Additionally, Technical Specification 3,3.3.2 and 4.3.3.2.c are being revised to delete the reference to Fxy. This is an editorial change since Amendment 75 to the VCSNS -

Technical Specifications deleted this referenco, l Specific editorial changes are incorporated into this change request and are listed in i Attachment 1. l The TS change request (TSCR) is contained in the following attachments:

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Attachment i Explanation of Changes Summary Marked-up Technical Specification Pages i Revised Technical Specification Pages Attachment il Safety Evaluation Attachment 111 No Significant Hazards Evaluation SCEEG requests NRC review and approval of this amendment at your earliest convenience.

This proposed amendment has been reviewed and approved by the Plant Safety Roview Committea and the Nuclear Safety Review Committee.

These statements and matters set forth herein are true and correct to the best of my knowledge, information, and belief.

1 g , _ _

s Docum:nt Control Desk -

4 TSP 970006 RC-96-0168

. Page 3 of 3 i

Should you have questions, please call Mr. Philip A. Rose at (803) 345-4052.

Very truly yours, I. (fiV EL' l Gary'J. T ylor PAR /GJT/dr Attachments (3)

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J. L. Skolds Paulette Ledbetter W. F. Conway J. B. Knotts, Jr.

R. R. Mahan (w/o Attachment) M. K. Batavia R. J. White RTS (TSP 970006)

L.A.Reyes File (813.20)

L. M. Padovan DMS (RC-98-0168)

NRC Resident !nspector i

STATE OF SOUTH CAROLINA  :

TO WIT :

COUNTY OF FAIRFIELD  :

I hereby certify that on the o9 # day of 5demu19ff_, before me, the subscriber, a Not Public of the State of South Carolink personally appeared David A. Lavigne, being d sworn, and states that he has signature authority for the Vice President, Nuclear erations of the South Carolina Electric & Gac Company, a corporation of the State of S uth Carolina, that he provides the foregoing response for the purposes therein set forth, that the statements made are true and correct to the best of his knowledge, information, and belief, and that he was authorized to provide the response on behalf of said Corporation.

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WITNESS my Hand and Notarial Seal [ NAl/

/ Notary Public My Commission Expires JJ4 /3 2 oo a ~

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NUCLEAR EXCELLENCE - A SUMMER THADITIONI Ii

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Docum:nt Control D:sk Att: chm:nt i TSP 970006 RC-98-0158 3 age 1 of 8 SCE&G -- EXPLANATION OF CHANGES Paae # Affected Bar Descriptiort of Chance Reason for Change Section #

Index 3/4.3.3 1 Added " Power Distribution Added new pages to Section 3.

Page IV Monitoring System - Page 3/4 3-73".

3/4 1-15 3.1.3.1 1 Replaced "A power distribution The generic phrase, " core Action d.3.c map is obtained from the power distribution movable incore detectcrs and measuremonts,"is being used l Fe(z) and F1 are verified..." because above 25% RTP, the I with "A core power distribution PDMS (au NRC approved core l

measurement is obtained and pcwei distribution monitoring i systom) wW N used to obtain l Fo(z) and F$ are verified .." ,

i power distributton mformation rather than using a power l distribuSon map via movable 1 incore detectors (MIDS). The genoric phrase is appropriate for whichever method is used.

3/4 2-4 3.2.2 1 Replaced "incere mapping" The generic pirrase," core Action b with " core power distribution puwer distribution measurements" measurements,"is being used because above 25% RTP, the PDMS will be used to obtain power distribution information rather than using a power l

distribution map via MIDS. The 1 generic phrase is appropriate for whichever method is used.

3/4 2-5 4.2.2.2.a 1 Replaced " greater than 5%" This change is being made with 1ess than or equal to 25% because above 25% the PDMS but greater than 5%" and will be used to obtain power  ;

added "and when the PDMS is distribution information rather  !

inoperable" to the requirement than using the MIDS.

to use the movable incore However, when PDMS is detectors to obtain a power inoperable the MIDS will be l distribution map to determine if used. The requirement to ad  ;

Fo the uncertainties was

' operation.

(z)isAlso within limits for incorporated RAOC incorporated because 4.2.2.2.b l

the requirement to add the (the current requirement to add epplicable manufacturing and tne uncertainties)is being measurement uncertaintics deleted.

listed in the COLR.

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' l Docum:nt Control Desk i Attachm:nt i I TSP 970006 RC-98-0168 Page 2 of 8 l SCE&G -- EXPLANATION OF CHANGES Pace # Affected Bar Description of Chance Reason for Chanae Section #.

3/4 2-5 4.2.2.2.b 2 The current requirement to The requirement to increase cont, increase the measured Fo(z) the measured Fo(z) by l component of the power manufacturing tolerances and distribution map to account for measurement uncertainties is manufacturing tolerances and being moved to 4.2.2.2.a. The I measurement uncertainties is specific manufacturing and being deletod. A new measurement uncertainties are ,

requirement will be added that being moved to the COLR. l requires the PDMS to be used This change is being made  !

when THERMAL POWER is because above 25% the PDMS

>25% and increased by the will be used to obtain power applicable manufacturing and distribution information rather 4

measurement uncertainties than using the MIDS.

listed in the COLR.

4.2.2.2.c 3 The requirement that This change is a result of the measured Fo(z) beincreased addition of the requirement to j by allowances for use the PDMS for power manufacturing tolerances and distribution measuoments l measurement uncertainty is above 25% and its unique l being revised to the uncertainties that are different j

" applicable" allowances and than when the MIDS is used. I manufacturing tolerances This change is generic to either i l

" listed in the COLR." PDMS or a MIDS generated flux map.

4.2.2.2.d 4 The footnote

• reference to The generic phrase, " core footnoto

• power distribution map is being power distribution changed to reference a core measurement,"is being used power distribution because above 25% RTP, the i measurement. PDMS will be used to obtain power distribution information i rather than using the power I distribution map via MIDS. The generic phrase is appropriate for whichever method is used.

3/4 2-6 4.2.2.2.e 1 The reference to " maps"in (2) The term " measurements" will has been changed to replace " maps" because above

" measurements " 25% RTP, the PDMS will be used to obtain power distribution information rather i than using a power distribution map via MIDS. The genecie term is appropriate for whichever method is used.

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Docum:nt Control Desk Attachm:nt i TSP 970006 RC-98-0168 Page 3 of 8 SCE&G - EXPLANATION OF CHANGES Pace # Affected Bar Description of Chanae Reason for Chanae Section #

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3/4 2-6a 4.2.2.3 1 The requirement that This change is a result of the measured Fo(z) be increased addition of the seguirement to by allowances for use the PDMS for power manufacturing tolerances and distribution measurements measurement uncertainty is above 25% and its unique being revised to the uncertaintias that are different

" applicable" allowances and than when the power manufacturing tolerances distribution map via MIDS is

" listed in the COLR." used. This change is generic to either PDMS or flux mapping.

3/4 2-6b 4.2.2.4.a 1 Added "when the PDMS is This change is being made inoperable" to the requirement because above 25% the PDMS to use the movable incore will be used to obtain power detectors to obtain a power distribution information rather i

distribution map to determine if than using a power distribution Fo(z)is within limits for Base map via MIDS. However, when

. Load operation when Thermal PDMS is inoperable a power Poweris > APL" Also distribution map will be used.

incorporated the requirement to The requirement to add the i add the applicable uncertainties was incorporated manufacturing and because 4.2.2.4.b (the current measurement uncertainties requirement to add the listed in the COLR. uncertainties)is beino deleted.

4.2.2.4.b 2 The current requirement to The requirement to increase increase the measured Fo(z) the measured Fo(z) by

! component of the power manufacturing tolerances and i distribution map to account for measurement uncertainties is manufacturing tolerances and being moved to 4.2.2.4.a. The measurement uncertainties is specific manufacturing and be;ng deleted. A new measurement uncertainties are

requirement will be added that being moved to the COLR.

requires the PDMS to be used This change is being made when Thermal Power is > because above 25% the PDMS j APL"and increased by the will be used to obtain power applicable manufacturing end distribution information rather measurement uncertainties than using a power distribution

listed in the COLR. map via MIDS.

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Docum:nt Control D:sk Attachment i TSP 970006 RC-98-0168 Page 4 of 8 SCE&G -- EXPLANATION OF CHANGES  !

Paae # Affected Bar Deseniption of Chance Reason for Chanae Section # 1 3/4 2-6b 4.2.2.4.c 3 Added " increased by the This change is being made to cont. applicabla allowances for be consistent with the other manufacturing and SRs which define the l measurement uncertainties measured Fo(z) as being  !

listed in the COLh" to the increased by uncertainties.  !

phrase defining the measured Fo(z)..

4.2.2.4.d.1 4 Reference to the " full core tiux The generic phrase," core map being taken" and to power distribution

" mapping" has been replaced measurement," and the term,  ;

with " core power distribution " measurement,"is being used  !

measurement has bean because above 25% RTP, the l obtained" and " measurement," PDMS will be used to obtain  ;

respectively. power distribution information rather than using a power I distribution map via MIDS. The generic phrase and term are appropriate for whichever method is used.

3/4 2-6c 4.2.2.4.o.2 1 The reference to " maps"in (2) The term " measurements" will has been changed to replace " maps" because above

" measurements." 25% RTP, the PDMS will be used to obtain power distribution infonnation rather than using a power distribution map via MIDS. The generic term is appropriate for whichever method is used.

4.2.2.5 2 Requirements were added that This change is being made reflect that the PDMS is used because above 25% the PDMS when Fo(z).is measured for will be used to obtain power reasons other than meeting the distribution information rather requirements of Specification than using a power distribution 4.2.2.2. The changes map via MIDS. However, when associrted a with adding this PDMS is inoperable a power requirement include specifying distribution map via MIDS will the power range for when a be used. The specific core map is used and when the uncertainties were moved to PDMS is used, deleting the the COLR instead of listing all specific uncertainties when the the nneertainties for both 7 core rnap is used, and adding methods in the SR.

the specific requirements when i

the PDMS is used.

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Docum:nt Con +rol Desk Attachm:nt i TSP 970006 RC-98-0168 Page 5 of 8 SCE&G -- EXPLANATION OF CHANGES Paae # Affected Bar Description of Chance Reason for Chanae Sectinn #

3/4 2-8 3.2.3.c 1 1. Requirements were added 1. This change is being made '

to the LCO to reflect that because above 25% the when s; 25% but > 5% RTP PDMS will be used to obtain and when the PDMS is power distribution inoperable a power information rather than distribution map via M!DS is using a power distribution used to obtain measured map via M!DS. However, values of F1 and above when PDMS is inoperable a 25% PCMS is used. power distribution map via MlDS will be used.

2. The phrase," increased by 2. This change was made to the applicable FE reflect that the FE measurement uncertainty measurement is increased listed in the COLR and," by uncertainty and to be was added to the statement consistent with similar stating what the measured requirements in other values of F"as are used for. Specifications which state that the msasured value of the parameter is increased

- . . . by uncertai.nty.

3. The requirement that the 3. The specific uncertainty for FE include a 4% the measurements which uncertainty for incore utilize the core distribution measurement is being map via MIDS is being deleted. moved to the COLR because the PDMS is used to monitor power distribution limits > 25% RTP. Specific uncertainties that are not generic to both methods of monitoring power distribution limits are being moved to the COLR.

3.2.3.d 2 The period (.) was replaced This change corrects an with a comma (,) at the end of editorial error in the Technical the sentence and "and" was Specifications.

udded.

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TSP 970006 I RC-98-0168 I Pcge 6 of 8 l

SCE&G - EXPLANATION OF CHANGES Paae # Affected Bar Description of Chance Reason for Change Rectico #,_,

3/4 2-8 3.2.3 3 "incore flux mapping" was The generic phrase, " core cont. Action b replaced by " core power powcr distribution distribution measurement". measurement,"is being used because above 25% RTP, the PDMS will be used to obtain power distribution information rather than using a power distribution map via MIDS. The generic phrase is appropriate for whichevor method is used.

3/4 2-9 3.2.3 1 "incore flux mapping" was The generic phrace, " core Action c replaced by " core power power distribution distribution measurement". measurement,"is being used because above 25% RTP, the PDMS will be used to obtain power distribution information rather than using a power distribution map via MIDS. The generic phrase is appropriate for whichever method is used.

4.2.3.3 2 Comma added after "R". . Comma was insivertently I deleted by Amendment 45.

3/4214 LCO 1_j Added.page heading. _

Editorial enhancement.

4.2.4.2 . 2 l " flux map"was replaced by The generic phrase, "cora

! " core power distribution power distribution

! measurement" measurement,"is bemg used because above 25% RTP. tne PDMS will be used to obtain power distribution information i rather than using a flux map via -

MIDS. Thegenericphraseis

,[ appropriate for whichever method is used.

3/4 3-46 3.3.3.2- eleted "and Fn" from the This changeis an xiitorial 4.3.3. Applicabikty item c and from change that deletes reference the SR 4.3.3.2.c. to Fn. All reference to Fu

s. .

[ should have been deleted as pait of the Technical Specification change request for VCSNS change to VantLge 5 Fuel (Amendment 75). Tnis l reference was inadvertently left l in the Technigl Specifications.

Docum nt Control D:sk Attichm:nt I TSP 970006 BC 98-0168 Page 7 of 8 SCE&G - EXPLANATION OF CHANGES Pace # Affected Bar Description of Change Reason for Chance Section #

New 3.3.3.11 1 Added PDMS technical This addition is necessary to Pages specification. provide the operability and 3/4 3-73 surveillance requirements per 3/4 3-74 the guidance in the SER approving WCAP 12474-P-A New Table 1 %dded Table of required plant T':is addition is necessary to Page 3.3.3.10 input information with minimum t,;:;icify what inputs are 3/4 3-75 number of valid inputs. regired to insure operability of the BEACON system 83/4 2-4 3/4.2.2 1 Insert 1: Added a soction to Additions were made to the 3/4 2.3 the Bases which discusses the Bases to incorporate the use of uncertainties used for the PDMS in the Technical measurements obtained using Specifications.

the PDMS.

3/4,2.2 2 Insert 2: Added a section to Additions were made to the 3/4 2.3 the Bases which discusses the Bases to incorporate the use of uncertainties used for the PDMS in the Technical measurements obtained using Specifications.

l the PDMS.

83/4 2-5 Sub-title 1 Changed sub-title to reflect Corrected error made during correct section (QPTR).. Amendment 75.

, 3/4.2.4 2 Added "cr a full core power The generic phrase, " core distribution measurements" to power distribution the Quadrant Power Tilt Ratio measurement,"is being used Section of the Bases which because above 25% RTP, the discuses monitoring QPTR. PDMS will be used to obtain power distribution information rather than using a flux map via

MIDS.

B3/4 3-4 3/4.3.3.11 1 Added the bases for the new Provided the bases for the new

. and new PDMS operability requirements LCO, Surveillance page Requirements, and Table as a B3/4 3-5 result of implementing the PDMS.

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Docum:nt Control Desk Attachm:nt I i TSP 970006 I RC-98-0168 l Page 8 of 8

! SCE&G -- EXPLANATION OF CHANGES Paae # Affected Bar Description of Chance Reason for Chanae Section #

l 6-16 6.9.1.11.e 1 Added "and Fo(z) This proposed change reflects manufacturing / measurement added uncertainties being uncertainties" to the COLR relocated from the Technical l Section of the Administrative Specifications to the COLR.

Controls. This reflects changes made to the Specifications as part of incorporating PDMS. The uncertainties associated with PDMS is different than the uncertainties associated with flux map generated power

_ distribution parameters.

6.9.1.11.f 2 Added"and F1 measurement This proposed change reflects unceqinties" to the COLR added uncertainties being l Section of the Administrative relocated frorn the Technical I

Controls. Specifications to the COLR.

This reflects changes made to l the Specifications as part of l

incorporating PDMS. The uncertainties associated with PDMS is different than the uncertainties associated with flux map generated power distribution parameters.

6-16a 6.9.1.11.a 1 Corrected titles for This change corrects editorial

Specifications 3.1.3.53.1.3.6, errors in the Technical

and 3.2.3. Specifications.

! 6.9.1.11.b 2 Minor editorial changes. Corrected grammatical errors.

l 6.9.1.11.c _3 Minor editorial change - This change corrects an

! lowered case for MAY. editorial error in the Technical

, Specifications.

6.9.1.11.d 4 Added WCAP-12472-P-A The BEACON Core Monitoring which is an additional and Operations Support System reference that documents the WCAP was added to the analytical methods used to Administrative Controls Section determine the core operating of the Technical Specification to limits. document the methodology of the NRC approved power distribution monitoring system. The PDMS in the proposed Technical Specifications is utilized when Thermal Poweris > 25% RTP to measure the power distribution limits.

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