ML20036C245

Summary of 930519 Meeting W/Util in Rockville,Md Re Electric Sys Enhancement Initiative & Related Regulatory Issues Concerning GDC 17 of App a to 10CFR50 & Findings from Previous Insp Findings.List of Attendees & Handouts Encl

ML20036C245
Person / Time
Site:	Brunswick
Issue date:	06/10/1993
From:	Milano P Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
TAC-M75638, TAC-M75639, NUDOCS 9306150377
Download: ML20036C245 (46)

Text

.

t June 10, 1993 Docket Nos. 50-325 and 50-324 LICENSEE: Carolina Power & Light Company FACILITY: Brunswick Steam Electric Plant, Units 1 and 2

SUMMARY

OF MAY 19, 1993, MEETING REGARDING ELECTRIC SYSTEM-ENHANCEMENTS (TAC NOS. M75638 AND M75639)

This summary refers to the meeting with Carolina Power & Light Company (CP&L) conducted on May 19, 1993, at the NRC office in Rockville, Maryland. The meeting was requested by the NRC to discuss CP&L's electric system enhancement initiative and related regulatory issues regarding General Design Criterion 17 of Appendix A to 10 CFR Part 50 and findings from previous NRC inspections.

A list of the attendees at the meeting and a copy of the slides presented by CP&L are enclosed.

The CP&L presentation followed closely the material in their handout (Enclosure 1).

CP&L stated that, after further review, a change was made to the previous decision on the modifications to improve access to the alternate offsite power source.

Rather than installing a second startup transformer, CP&L has selected the installation of a motorized no-load disconnect switch, with appropriate logic enhancements to improve the backfeed capability through the main transformer and unit auxiliary transformer.

CP&L stated that this option also eliminated the need for installation of new storage batteries for 230 kV switchyard control power.

CP&L discussed the status of other enhancement projects and agreed to keep the NRC staff informed of the status of the enhancement initiatives.

ORIGINAL SIGNED BY:

Patrick D. Milano, Senior Project Manager Project Directorate 11-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

1. Attendance List

2. CP&L Handouts cc w/ enclosures:

See next page OFFICE LA:P'D2 D PN PM:PD21:DRPE AD:PD21:DRPE_

NAME PDddeknb PDMilanoNin SSBajwa b DATE 06/ k? /93 06/ /D /93 06/ 10 /93 Document Name:

BRN75638.LTR L

9306150377 930620

-2:

PDR ADOCK 05000324 c,a P

ppg e

Brunswick Steam Electric Plant Units 1 and 2 cc:

Mr. Mark S. Calvert Mr. H. A. Cole Associate General Counsel Special Deputy Attorney General Post Carolina Power & Light Company State of North Carolina Post Office Box 1551 Post Office Box 629 Raleigh, North Carolina 27602 Raleigh, North Carolina 27602 Mr. Kelly Holden, Chairman Mr. Robert P. Gruber Board of Commissioners Executive Director Post Office Box 249 Public Staff - NCUC Southport, North Carolina 28422 Post Office Box 29520 Raleigh, North Carolina 27626-0520 Resident Inspector U.S. Nuclear Regulatory Commission Mr. H. W. Habermeyer, Jr.

Star Route 1, PO Box 208 Vice President Southport, North Carolina 28461 Nuclear Services Department Carolina Power & Light Company Regional Administrator, Region II Post Office Box 1551 - Mail OHS 7 U.S. Nuclear Regulatory Commission Raleigh, North Carolina 27602 101 Marietta St., N.W., Ste. 2900 Atlanta, Georgia 30323 Mr. Dayne H. Brown, Director Division of Radiation Protection N. C. Department of Environmental, Commerce and Natural Resources Post Office Box 27687 Raleigh, North Carolina 27611-7687 Mr. J. M. Brown Plant Manager - Unit 1 Carolina Power & Light Company Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 28461 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, South Carolina 29211 Mr. C. C. Warren Plant Manager - Unit 2 Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 28461 Mr. R. A. Anderson, Vice President Carolina Power & Light Company Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 284G1 l

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DISTRIBUTION:

Enclosures 1 and 2:

Dockei Filef NRC/ Local PDRs PD 11-1 Rdng. File P. Milano E. Merschoff, R-II

T. Murley/F. Miraglia 12-G-18 J. Partlow 12-G W. Russell 12-G-18 J. Richardson 7-D-26 S. Varga G. Lainas S. Bajwa P. Anderson C. Berlinger 7-E-4 A. Gill 7-E-4 P. Kang 7-E-4 C. Moon 11-E-22 i

L. Plisco, EDO 17-G-21 E. Jordan MNBB 3701 J. Johnson, R-II R. Carroll, R-II cc:

Licensee & Service List 1

4 11009,7 1

1

__z ENCLOSURE 1 MEETING ATTENDENCE LIST BRUNSWICK ELECTRIC DISTRIBUTION SYSTEM May 19. 1993 P.D. Milano Senior Project Manager NRC/PD 11-1 504-1457 George Attarian Chief Electrical Engineer CP&L 919-546-4573 Dave Waters Brunswick Licensing Manager CP&L 919-546-3678 C.S. Hinnant Director Site Operations CP&L 457-6824 R.W. Via Manager Trans Engineer CP&L 919-546-7487 John O'Connor NED BESS - Electrical Manager CP&L 919-546-2037 E.A. Bishop NED BESS Section Manager CP&L 919-546-4158 Hank George Vice President, Consultant Synergy 301-261-1166 B.D. Liaw Deputy Director NRR/DE 504-3298 C.H. Berlinger Chief Electrical Engineer Branch NRR 504-2774 P.J. Kang Electrical Engineer Branch NRR/DE 504-2779 Roy Anderson VP BNP CP&L 919-457-2496 Milt Shymlock Section Chief Plant System Section NRC/R-II 404-331-5596 Loren Plisco Regional Coordinator NRC/0ED0 504-1725 David Skeen Events Assessment Branch NRC/NRR 504-1174 R.L. Prevatte SRI Brunswick US NRC R-II 919-457-9531 G.C. Lainas AD R-II Reactors NRR/DRPE 504-1453 C.N. Moon SRE NRR/ DORS /0TSB 504-3136 E.G. Adensam Project Director NRR/DRPE/PD21 504-1466 1

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._q j ENCLOSURE 2 CAROLINA POWER & LIGHT COMPANY BRUNSWICK ELECTRICAL SYSTEM ENHANCEMENT INITIATIVE MAY 19,1993

MEETING AGENDA 1.

Introduction and Objectives 2.

Overview of Present System 3.

Electrical Enhancement Initiative (a)

Electrical System Reconstitution Calculation Design Basis Documents (b)

GDC-17 (c)

Status of Other Potential System Hardware Enhancements Non-Segregated Bus Voltage Regulators Switchyard Batteries Additional DG 1

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BRUNSWICK ELECTRICAL DISTRIBUTION SYSTEM RECONSTITUTION O

SYSTEM OVERVIEW O

ELECTRICAL ENHANCEMENT INITIATIVE O

GDC-17 PROJECT O

ELECTRICAL ENHANCEMENT PROJECTS e

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ELECTRICAL DISTRIBUTION SYSTEM BRUNSWICK UNITS 1 &2 k

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O ELECTRICAL ENHANCEhENT INITIATIVE o

ELECTRICAL ISSUES - HISTORICAL CP&L NEEDED A FULL AND ADEQUATE UNDERSTANDING OF THE BNP ELECTRICAL DISTRIBUTION SYSTEM (1988-1989)

INCOMPLETE CALCULATIONS INCOMPLETE DOCUMENTATION AND UNDERSTANDING OFDESIGN BASIS LACK OF SYSTEMATIC TECHNICAL APPROACH TO MODIFICATIONS INSUFFICIENTLEVEL OFDOCUMENTATION 2

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CP&L QA AUDIT- (1990)

THE DESIGNBASES OF THE ELECTRICAL DISTRIBUTION SYSTEM ARE INCOMPLETELY

'i DEFINED AND INMANYINSTANCES i

SUPPORTING DOCUMENTATIONIS EITHER l

UNAVAILABLE OR1NADEQUATE.

EXISTING ELECTRICAL DESIGN DOCUMENTATION WAS NOT SYSTEMATICALLY.

i UPDATED, COMPILED AND DID NOTIDENTIFY SOURCES OF ASSUMPTIONS.

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NON SEGREGATED BUS RATING SYSTEM VOLTAGE 3

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NEED FOR A COHESIVEDESIGNAND CALCULATION

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ESTABLISH AN OBJECTIVE DEVELOP A PLAN TO MEET THE OBJECTIVE i

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OBJECTIVE I

TO DEMONSTRATE THAT THE BRUNSWICK ELECTRICAL DISTRIBUTION SYSTEM:

IS TECHNICALLYADEQUATE TO PERFORM IT'SINTENDED FUNCTION AND THE LIMITATIONS AND MARGINS OF THE.

SYSTEM ARE BETTER UNDERSTOOD i

IDENTIFYSYSTEM WEAKNESSES AND DB2EKMINE APPROPRIATE CORRECTIVE MEASURES 6

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o STRATEGY (CONT'D)

PLAN ESTABLISH A BASE OF REQUIRED CALCULATIONS CAPACITY VOLTAGE SHORT CIRCUIT PROTECTION / COORDINATION ESTABLISH SYSTEM LEVEL DESIGN BASIS DEVELOPMENT OF ELECTRICAL DESIGN BASIS DOCUMENTS PROVIDE A SOLUTION TO THE GDC-17 ISSUE EXAMINE POSSIBLE SYSTEM ENHANCEMENTS TO RESOLVE SELFIDENTIFIED ISSUES NON SEGREGATED BUS VOLTAGE REGULATORS SWITCHYARD BATTERIES ADDITIONAL DIESEL GENERATOR 7

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ESTABLISH A BASE OF REQUIRED CALCULATIONS IDENTIFY CALCULATIONS THAT ARE NEEDED DETERMINE CALCULATIONS THAT ARE MISSING OR REQUIRE REVISION AS-BUILT THE ELECTRICAL DISTRIBUTION SYSTEM DEVELOP CALCULATIONS LOAD FACTOR STUDY ELECTRICAL SYSTEM LOAD FLOW / VOLTAGE / FAULT ANALYSIS CALCULATION DIESEL GENERATOR STATIC AND DYNAMIC ANALYSIS D

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ESTABLISH A BASE OF REQUIRED CALCULATIONS (CONT'D) l

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ACMCC CONTROL LOOP CALCULATION CABLE AMPACITY CALCULATIONS i

COORDINATION / PROTECTION STUDY STATUS CALCULATIONEFFORTIS ON TARGET WITH SCHEDULESIN 3 YEAR PLAN t

MAJORITY OF CALCULATIONS ARE IN PROCESS l

OR REVIEW t

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ESTABLISH SYSTEM LEVEL DESIGN BASIS DBD PROCESS DATA COLLECTION FOR INPUT AE/ CONSTRUCTOR TURNOVER ORIGINAL FILES REVIBVED PLANT ENGINEERING FILES REVIBVED BNP LICENSING FILES REVIEWED DEVELOPMENT OF A DBD DATABASE COMPLETED FOR ELECTRICAL SYSTEMS PREPARE TWO ELECTRICAL DBD'S (AC & DC SYSTEM)

DETERMINE BOUNDARIES AND INTERFACES REVIEW OF THE DBD DATABASE REVIEW OF POSTLICENSING DESIGN DOCUMENTS DCDBD COMPLETE AC DBD TO BE COMPLETE DEC 1993 10

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DBD PROCESS (CONT'D)

VALIDATION PHASE

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CRITICAL DESIGN PARAMETERS IDENTIFIED l

1 OUTPUTDOCUMENTS REVIEWED PLANT WALKDOWNS AS REQUIRED VALIDATION REPORT STATUS COMPLETE FOR DCDBD I

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o ESTABLISH SYSTEM LEVEL DESIGN BASIS (CONT'D) l

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DISCREPANCYRESOLUTION 1

PROGRAMMATIC APPROACH TO IDENTIFY, CONFIRM, PRIORH1LE, TRACK, AND CLOSEOUT EACH POTENTIAL DISCREPANCY ADHERE TO 10CFR REPORTABILITY REQUIREMENTS RELY ONEXISTING CP&L PROCEDURES AND GUIDELINES EXAMPLES OF ELECTRICAL DISCREPANCIES IDENTIFIED COMPONENTS IN 24/48V DC SYSTEM WERE NOT TESTED SEISMIC TESTINGINFORMATION FOR 24/48VDC BATTERY CHARGERS NOT FOUND 12

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SUMMARY

THE ESTABLISHMENT OF A FIRM DESIGN BASIS FOR THE ELECTRICAL DISTRIBUTION SYSTEM TOGETHER WITH THE RECONSTITUTION AND -

ESTABLISHMENT OF ANELECTRICAL CALCULATIONBASE DEMONSTRATES THE ADEQUACY OF THE SYSTEM AND ESTABLISHES THE BASIS FOR THE MANAGEMENT, OPERATION AND MODIFICATION OF THE SYSTEM.

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GDC-17 PROJECT CP&L ACKNOWLEDGES THATBRUNSWICKD1D NOT MEET THE NRC'S CURRENTINTERPRETATION WITH RESPECT TO GDC-17 CP&L DEC1DED TO RESOLVE STAFF'S CONCERN (MAY 1991).

STAFF FORMALLY RESPONDS TO CP&L'S POSITION (OCTOBER 1991 SER).

1 DEMONSTRATE ACCEPTABLE TIME TO ESTABLISH ALTERNATE OFFSITE ACCESS SOURCE (BACKFEED) TO ASSURE FUEL AND RCPB DESIGN LIMITS ARE NOTEXCEEDED.

CURRENT SURVEILLANCE OF OFFSITE POWER SOURCES IS NOT CONDUCTED AS INTENDED BY TECHNICAL SPECIFICATIONS.

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JUNE 1991 NRC MEETING CP&L DISCUSSED WITH THE STAFF CP&L'S PLANS TO IMPROVE OFFSITE POWER RELIABILITY CP&L DISCUSSED SEVERAL POSSIBLE OPTIONS MOTORIZED DISCONNECT ADDITIONAL START-UP TRANSFORMERS ADDITIONAL POWER SOURCE COMBINATION FURTHER ANALYSIS NEEDED TECHNICAL FEASIBILITY MININIZE IMPACT ON EXISTING SYSTEM RESOLVE KNOWN & FUTURE ELECTRICAL ISSUES l

(VOLTAGE, NON SEGREGATED BUS DUCT, FUTURE TRANSMISSIONNEEDS)

RISK MANAGEMENT ADDITION OF AN ONSITE SOURCE 15 m

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DECEMBER 1991 NRC MEETING CP&L INFORMS STAFF OF THE STATUS OF THE JUNE 1991 ACTIONPLAN PRESENTED ANINTEGRATED OPTIONREFINEMENT ENHANCED OUR OPTION SELECTION PROCESS EVALUATED OPTIONS AGAINST SEVERAL ISSUES PRESENTED A SELECTED OPTION GDC-17 ADD ONE START-UP TRANSFORMER PER UNIT OFFSITE POWER ADD TWO 4160V REGULATORS PER UNIT NEWDC STORAGE BATTERIES FOR 230KV BREAKER CONTROL NON SEGREGATED BUS UPGRADE - Y-BUS OF SAT TO 5000A ONSITE POWER NEW 4000KW NON CLASSIE DIESEL GENERATOR I6

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REASONS FOR CHANGE DESIGNBECAME COMPLEX ESCALATING COSTPROJECTIONS l

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CONCLUSION:

j BREAK THE OVERALL PROJECTDOWN TO MORE MANAGEABLE AND BENEFICIAL PROJECTS PRIORmLE RESOURCES AND FOCUS TO MEET OUR GDC-17 COMMITMENT 17 m_

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o OPTIONS TO MEET GDC-17 l

GENERATOR BREAKER (FULL FAULTINTERRUPTING CAPABILITY)

LOAD BREAK SW7TCH (LOAD INTERRUPTING CAPABILITY)

NO LOAD DISCONNECT SWITCH WITH LOGIC ENHANCEMENTS ADDITIONAL TRANSFORMERS (IN VARIOUS CONFIGURATIONS) o OPTION SELECTED NO LOAD DISCONNECT SWITCH WITH LOGIC ENHANCEMENTS O

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SELECTED OPTION FEATURES DESIGN CONSISTS OF TWO MAJOR PARTS TO SIGNIFICANTLYENHANCE THE EXISTING UAT BACKFEED PROCEDURE UNDER BOTH NORMAL AND EMERGENCY CONDITIONS:

A 24 KV NO LOAD DISCONNECT SWITCH (NLDS)

TO REPLACE PRESENT PRACTICE OF REMOVING BOLTED-IN GENERATOR DISCONNECTLINKS CONTROL LOGIC " NORMAL /BACKFEED" SWITCHES TO REPLACE PRESENT PRACTICE OF JUMPER / WIRE AND LOGIC CARD REMOVALS DESIGN OBJECTIVE MODIFICATIONS WILL RESULTIN CAPABILITY FOR A DELAYED "SECOND SOURCE" OF' OFFSITE POWER TO BE AVAILABLE WITHIN ONE' HOUR EXISTING STATION BLACKOUT COPING.

ASSESSMENTDEMONSTRATES ACCEPTABILITY

.i OF 70 MINUTES WITHOUTAC POWER TO BOTH

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NO LOAD DISCONNECT SWITCH DESCRIPTION ll THREE POLE DOUBLE SIDE-BREAK MANUALLY OPERATED DISCONNECT I

i PROVEN DESIGN WITH EXCELLENT PERFORMANCE i l OBTAINED INALL APPLICATIONS HIGH RELIABILITY ASSURED BYMINIMUM NUMBER OF PARTS l

i SIMPLICITY OF OPERATION AND MAINTENANCE.

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O CONTROL LOGIC SWITCHES DESCRIPTION i

INSTALLATION OF CONTROL SWITCHES TO STREAMLINE IMPLEMENTATION OF EXISTING PROCEDURAL STEPS READILY ACCESSIBLE SWITCH LOCATIONS IN THE CONTROL ROOM AND TURBINE BUILDING i

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OPERATOR ACTIONS PREPARE FOR ENERG1 ZING BACKFEED (IN ANY ORDER)

SELECT "BACKFEED" ON CON 1ROL ROOM SWITCHES SELECT "BACKFEED" ON TB 70 FT. SWITCHES OPEN 24 KV NO LOAD DISCONNECT ON TB 43FT.

SELECT "BACKFEED" ON TB 43FT. SWITCHES SELECT "BACKFEED" ON TB' 20FT. SWITCHES ENERGIZE BACKFEED AND RESTORE POWER TO E-BUSES (FROM CONTROL ROOM)

CLOSE 230KV GENERATOR BREAKERS CLOSE 4KV UAT BREAKERS TO BOP BUSES CLOSE 4KV BOP TO E-BUS BREAKERS r

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BENEFITS OF SELECTED DESIGN ENHANCEMENT OF EXISTING PROVEN BACKFEED METHODOLOGY l

EMERGENCY BACKFEED OPERATION WILL BE THE SAME AS THAT ROUTINELY USED DURING REFUEL l

OUTAGES, ENHANCING OPERATOR FAMILIARITY ROUTINE USE DURING REFUEL OUTAGES SATISFIES TECHNICAL SPECIFICATION SURVEITIANCE REQUIREMENTS SIGNIFICANTLY RED UCES IMPA CT ON MAlNTENANCE PERSONNEL TO EFFECTBACKFEED ELIMINATES SIGNIFICANT EQUIPMENT ADDITIONS OF OTHER OPTIONS WITH CORRESPONDING SYSTEM COMPLEXITY AND ASSOCIATED MAINTENANCE AND TESTING REQUIREMENTS l

PROVIDES PLANT ACCESS TO ALL LOADS, BOP AND 1

CLASS IE, TO AID IN RECOVERY ACTIVITIES l

EXISTING SPACE AND CONFIGURATIONS CAN ACCOMMODATE AVAILABLE AND PROVEN EQUIPMENTDESIGN 1

INCREASES SAFETYMARGINS AND MEETS REGULATORY REQUIREMENT WITH SIGNIFICANT COST SAVINGS OVER OTHER OPTIONS l

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ELECTRICAL ENHANCEAENT PROJECTS 1

o NON SEGREGATED PHASE BUS UPGRADE o

VOLTAGE REGULATORS l

0 SWITCHYARD BATTERIES l

o ADDITIONAL DIESEL GENERATOR W

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NON SEGREGATED BUS UPGRADE IN1990 SAT Y WINDING BUS RATING WAS FOUND TO BE POTENTIALLYLESS THAN THE POSTULATED TOTAL LOAD UNDER LOCA CONDITION I

PREPARED AN OPERATIONAL ASSESSMENTEER, AND IMPLEMENTED ADMINISTRATIVE LOAD CONTROL PROGRAM TO LIMIT THE TOTAL LOAD TO 3315 AMPS l

UPGRADE WILL REPLACE 4,000 AMP BUS WITH A CABLE BUS RATED FOR 5,000 AMPS STATUS:

UNIT 1:

ENGINEERING - COMPLETE INSTALLATION - SCHEDULED FOR CURRENTREFUELING OUTAGE UNIT 2-l ENGINEERING - APPROX. 60%

l COMPLETE INSTALLATION-SCHEDULED FOR SPRING 1994 OUTAGE i

25

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VOLTAGE REGULATORS WITH PROJF JED CP&L SYSTEM GROWTH, OFFSITE VOLTAGE MAY NOT BE ADEQUATE FOR ACCIDENT:

LOADS (WORST CASE CONTINGENCY SCENARIO)

VARIOUS OTHER IN-PLANTAND TRANSMISSION SYSTEM OPTIONS COULD POTENTIALLYRESOLVE THISISSUE AND ARE UNDER EVALUATION MOST DESIRABLE IN-PLANT OPTION APPEARS TO BE VOLTAGE REGULATORS LOCATED IN OFF-SITE FEED TO EACH E-BUS, BUT WE MAY NEED TO REQUEST i

TECHNICAL SPECIFICATION RELIEF TO INSTALL THE l

MODIFICATION SELECTED l

PLAN TO CONTINUE COMMUNICATIONS WITH NRC l

STAFF CONCERNING RESULTS OF EVALUATIONS AND -

SELECTED APPROACH.

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o SWITCHYARD BATTERIES 1

MODIFICATION WOULD HAVE ADDED NEW STORAGE BATIERIES FOR 230 KV SWITCHYARD CONTROL POWER ORIGINALLYINTENDED TO SUPPORTINSTALLATION OF THE NEW SAT'S AND TO REMOVE CERTAIN SWITCHYARD LOADS FROM STATION BADEKIES l

WITH ALTERNATE APPROACH FOR GDC-17 (DISCONNECT SWITCH IN LIEU OF SAT'S) THE NEED FOR AND BENEFIT OF ADDITIONAL BATTERIES ARE DIMINISHED WITH THE MARGINAL BENEFIT, CP&L HAS PLACED THIS MODIFICATION ON HOLD l

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27 I

o FIFTH DIESEL GENERATOR ADDITIONIS UNDER CONSIDERATION BY CP&L MANAGEMENT. PRESENTLYEVALUATING OPTIONS ONDESIGN CRITERIA AND APPROPRIATE LCO EXTENSION, CONSIDERING COSTS, RISK / SAFETY l

l BENEFITS AND QUALITATIVE BENEFITS OF EACH l

OPTION.

1 NOT REQUIRED TO MEET BRUNSWICK DESIGN OR 1

LICENSING BASES, NOR TO MEET SAFETY GOALS.

HOWEVER, WE DO EXPECT SOME CDF BENEFIT.

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PRIMARYBENEFITIS TO SUPPORTIMPROVED DIESEL MAINTENANCE AND SUPPORTINCREASED OPERATIONAL FLEXIBILITY.

PLAN TO CONTINUE COMMUNICATIONS WITH NRC 1

l ON SELECTED OPTION AND BASES FOR APPROACH.

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0 FIFTH DIESEL GENERATOR (CONT'D)

TO COMPLETE THE EVALUATION OF OPTIONS FOR A FIFTH DIESEL, CP&L' NEEDS AGREEMENT WITH NRC ON KEYDESIGN PARAMETERS AND APPROPRIATE LCO EXTENSIONS.

29 I

1

_ _4 CONCLUSION:

_ CP&L IS COMMmED TO RESOLVE THE ~

CONCERNS RAISED BY THE STAFF WITH RESPECT TO GDC-17 FOR THE BRUNSWICK PLANT.

CP&L WILL CONTINUE THE ELECTRICAL RECONSTITUTION EFFORT TO IMPROVE THE UNDERSTANDING AND MANAGEMENT OF THE ELECTRICAL DISTRIBUTION SYSTEM AT THE

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BRUNSWICK PLANT.

CP&L WILL CONTINUE TO SHARE INFORMATION AND STATUS THE ELECTRICAL DISTRIBUTION SYSTEM ENHANCEMENTINITIATIVES WITH THE -

STAFF.

CP&L WILL MAKE PRUDENTDECISIONS WITH RESPECT TO THE ELECTRICAL ENHANCEMENT PROJECTS AND THEIR BENEFIT TO THE ELECTRICAL DISTRIBUTION SYSTEM.'

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30 L.

j CAROLINA POWER & LIGHT COMPANY BRUNSWICK AC ELECTRICAL DISTRIBUTION SYSTEM CALCULATIONS Calculation No.

Calculation Title llatua_

BNP-E-7.004 Unit 1 Emergency Bus INCORPORATING (6/15/93)

Load Factor Study COMMENTS BNP-E-7.005 Unit 1 BOP Load Factor INCORPORATING (6/15/93)

Study COMMENTS BNP-E-1.013 Unit 1 Safety-Related COMPLETE Control Loop Calculation BN P-E-7.007 Unit 2 Emergency Bus INCORPORATING (6/15/93)

Load Factor Study COMMENTS BN P-E-7.009 Unit 2 BOP Load Factor IN PROGRESS (7/28/93)

Study BNP-E-1.012 Unit 2 Safety-Related COMPLETE Control Loop Calculation BNP-E-7.002 AC AEDS Voltage / Load START DATE 08/93 Rev.1 Flow / Fault Current Study (9/30/94) 4

4 CAROLINA POWER & LIGHT COMPANY RRUNSWICK AC ELECTRICAL DISTRIBUTION SYSTEM CALCULA TIONS l

4 Calculation No.

Calculation Title Status BNP-E-7.010 Emergency Diesel IN P@ OGRESS (12/30/93)

Generator Load Study BNP-E-5.035 Emergency Bus Cable IN PROGRESS (12/30/93)

Ampacity Calculation BNP-E-5.036 BOP Cable Ampacity IN PROGRESS (10/29/93) 1 Calculation BNP-E-8.010 AC AEDS Coordination START DATE 07/94 (12/30/94)

Study BNP-E-8.013 Unit 1 AC MOV Motor CP&L REVIEW (6/12/93)

Rev.1 Torque Calculation BNP-E-8.014 Unit 2 AC MOV Motor CP&L REVIEW (6/19/93) l Torque Calculation l

CAROLINA POWER & LIGHT COMPANY BRUNSWICK 125/250 VDC ELECTRICAL DISTRIBUTION SYSTEM CALCULATIONS Calculation No.

Calculation Title issue Date Status BN P-E-6.093 Unit 1 Fault Current Study 12/30/93 IN PROGRESS j

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BNP-E-6.095 Unit 1 Coordination Study 12/30/93 IN PROGRESS BNP-E-6.097 Unit 1 Power Cable Ampacity 10/29/93 IN PROGRESS BNP-E-6.062 Unit 1 Voltage Drop Study 12/30/94 IN PROGRESS BN P-E-6.079 Unit 1 Battery / Charger Sizing 06/04/93 IN PROGRESS BNP-E-6.074 Unit 1 Battery Load Study 06/11/93 IN PROGRESS LA

CAROLINA POWER & LIGHT COMPANY BRUNSWICK 125/250 VDC ELECTRICAL DISTRIBUTION SYSTEM CALCULATIONS Calculation No.

Calculation Title issue Date Status BNP-E-6.083 Unit 2 Fault Current Study 03/31/94 START DATE (09/01/93)

BNP-E-6.085 Unit 2 Coordination Study 12/31/94 START DATE (04/01/94)

L BNP-E-6.087 Unit.2. Power Cable Ampacity 09/30/94 START DATE (01/01/94)

L BNP-E-6.071 Unit 2 Voltage Drop Study 03/31/94 START DATE I

(09/01/93)

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'BN P-E-6.080 Unit 2 Battery / Charger Sizing 03/31/94 START DATE I

(09/01/93)

BNP-E-6.075 Unit 2 Battery Load Study 01/31/94 IN PROGRESS 3.

CAROLINA POWER & LIGHT COMPANY BRUNSWICK 24/48 VDC ELECTRICAL DISTRIBUTION SYSTEM CALCULATIONS Calculation No.

Calculation Title Issue Date Status BNP-E-6.094 Unit 1 Fault Current Study 12/30/93 IN PROGRESS BNP-E-6.096 Unit 1 Coordination Study 12/30/93 IN PROGRESS BNP-E-6.098 Unit 1 Power Cable Ampacity 10/29/93 IN PROGRESS BN P-E-6.069 Unit 1 Voltage Drop Study 12/30/94 IN PROGRESS BN P-E-6.077 Unit 1 Battery / Charger Sizing 06/04/93 IN PROGRESS BNP-E,6.073 Unit 1 Battery Load Study 06/11/93 IN PROGRESS l

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l CAROLINA POWER & LIGHT COMPANY BRUNSWICK 24/48 VDC ELECTRICAL DISTRIBUTION SYSTEM CALCULATIONS Calculation No.

Calculation Title issue Date._

Status-BN P-E-6.084 Unit 2 Fault Current Study 03/31/94 START DATE (10/01/93)

BNP-E-6.086 Unit 2 Coordination Study 12/31/94 START DATE (04/01/94)

BNP-E-6.088 Unit 2 Power Cable Ampacity 09/30/94 START DATE (03/01/94)

BN P-E-6.072 Unit 2 Voltage Drop Study 11/30/93 START DATE (07/01/93)

BN P-E-6.078 Unit 2 Battery / Charger Sizing 12/31/93 START DATE (07/01/93)

BNP-E-6.076 Unit 2 Battery Load Study 08/31/93 IN PROGRESS i

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