ML20126H832

Nonproprietary Core Protection Calculator Improvement Program:Detailed Presentation to Nrc

ML20126H832
Person / Time
Site:	San Onofre
Issue date:	04/30/1985
From:	ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
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References
CEN-302(S)-NP, NUDOCS 8506100428
Download: ML20126H832 (51)

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Docket 50-361 CEN-302(S)-NP CPC IMPROVEMENT PROGRAM 1

Detailed Presentation to NRC April 1985 Combustion Engineering, Inc.

Nuclear Power Systems Power Systems Group Windsor, Connecticut 8506100428 850607 PDR ADOCK 05000361 P

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l LEGAL NOTICE i

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I THIS REPORT WAS PREPARED AS AN ACCOUNT OF WORK SPONSORED SY C00SLSTION ENGINEERING, INC. NEITHER COMEUSTION ENGINEERING l

NOR ANY PERSON ACTING ON ITS SEMALP:

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M44WS ANY WARRANTY OR REPRESENTATION, EXPRESS OR IRWUSD IIICLUDING THE WARRANTIES' OF PITNESS POR A PARTICULAR PURPOSE OR RERCHANTAEIUTY, WITH RESPECT TO THE ACCURACY, l

CORWLETENESS, OR USEPULNESS OF THE INFORMATION CONTAINED IN THIS REPORT, OR THAT THE LNE OF ANY INFORMATION, APPARATUS, WTHOO, OR PROCESS Ol8 CLOSED IN THIS REPORT MAY NOT INFRlNGE PRIVATELY OUNIS RIGHTS:OR

3. ASSUMES ANY UAEIUTIES WITH RESPECT TO THE 1.NE OF, OR POR DAMMBES RESULTfNG PRORA THE USE OF, ANY INFORMATION, APPARATUS, RAETHOO OR PROCESS DISCLOSED IN THIS REPORT.

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- INTROPUCTION The COLSS/CPC Oversight Conmittee, consisting of Arizona Nuclear Power Project, Arkansas Power and Light Company, Louisiana Power and Light Company and Southern California Edison, with Combustion Engineering as its technical consultant, was formed to address common analysis and software issues related to the Combustion Engineering digital monitoring and protection systems -' the Core Operating Limit Supervisory System (COLSS)

. and the Core Protection Calculator System (CPCS). The Committee will attempt to provide a standardized approach to resolution of problems and implementation of improvements to the digital monitoring and protection systems, an information mechanism for sharing operating experience and a feedback mechanism for the software designer.

The'COLSS/CPC Oversight Committee will meet with the NRC on April 18, 1985 to present a detailed description of the CPC Improvement Program, a program of CPC Modifications and Methodology Improvements scheduled to be implemented in 1986 and 1987. An initial presentation of concepts was provided on November 8, 1984. The schedule for implementation of the program was presented to the NRC on March 8, 1985. The April 18 meeting will provide a detailed presentation of the portions of the program scheduled for implementation in early 1986. This document provides the NRC with copies of the slides to be presented at this meeting.

The objective of the presentation is to provide a detailed description of the CPC Improvement Program in order to initiate the NRC review process, to solicit feedback from the NRC to guide in program development and to assist the NRC'in meeting the implementation schedule. A schedule for presentations, documentation and implementation will be presented at the meeting.

The CPC Improvement Program consists of three major areas:

- Part A - Optimization of CPC/CEAC Software for Reloads

- Part B - CEAC Sesensitization to Spurious Signals

- Part C - Reload Data Riock Constants This presentation will cover details of Parts A and B, scheduled to be implemented in early 1986. Part C, scheduled to be implemented initially in late 1986, will be presented in August 19R5.

The program to be described in this presentation will apply in whole or part to Arkansas Nuclear One Unit 2 (ANO-2); Palo Verde Nuclear Generating Station (PVNGS) Units 1, 2'and 3; San Onofre Nuclear Generating Station (SONGS) Units 2 and 3; and Waterford Unit 3.

This report is being presented on the SONGS Unit 2 docket since it is l

scheduled as the lead plant for implementation of the CPC Improvement j

Program.

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j CPC IMPROVEMENT PROGRAM PLANS FOR CPC PODIFICATIONS AND METHODOLOGY IMPROVEMENTS i

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DETAILED PRESENTATION TO NRC l'

APRIL 18, 1985 I

I ARIZONA NUCLEAR POWER PROJECT ARKANSAS POWER AND LIGHT COMPANY COMBUSTION ENGINEERING, INC.

LOUISIANA POWER AND LIGHT COMPANY SOUTHERN CALIFORNIA EDISON e

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AGENDA NRC - COLSS/CPC OVERSIGHT COMMITTEE MEETING APRIL 18, 1985 CPC IMPROVEMENT PROGRAM INTRODUCTIbH o

o PROGRAM GOALS o

PROGRAM APPROACH o

DESCRIPTION OF PROGRAM o

SCHEDULE FOR PRESENTATIONS, DOCUMENTATION AND IMPLEMENTATION o

SUMMARY

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CPC IMPROVEMENT PROGRAM

-PRESENTATION OBJECTIVE:

TO PROVIDE A DETAILED DESCRIPTION OF A PLANNED IMPROVEMENT PROGRAM FOR THE CORE PROTECTION CALCULATOR (CPC) SYSTEM IN ORDER TO INITIATE THE NRC REVIEW PROCESS, TO SOLICIT FEEDBACK FROM THE NRC TO GUIDE IN PROGRAM DEVELOPMENT, AND TO ASSIST THE NRC IN MEETING THE IMPLEMENTATION SCHEDULE.

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t CPC IMPROVEMENT PROGRAM PROGRAM GOALS o

AVOID FUTURE CPC SOFTWARE CHANGES

- REDUCE RELOAD EFFORT, CALENDAR TIME AND NEED l

FOR NRC REVIEWS o

REDUCE UNNECESSARY PLANT TRIPS

- AVOID TRANSIENTS CAUSED BY UNNECESSARY PLANT TRIPS

- IMPROVE PLANT AVAILABILITY o

SIMPLIFY RELOAD ANALYSES

- REDUCE RELOAD EFFORT AND CALENDAR TIME o

MAINTAIN MARGINS TO SAFETY I-I 3

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DESCRIPTION OF PROGRAM A.

OPTIMIZATION OF CPC/CEAC SOFTWARE FOR RELOADS

- IMPLEMENT IN EARLY 19R6 1

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CEACDESENSITIZhTIONTOSPilRIOUSSIGNALS

- IMPLEMENT IN EARLY 1986 C.

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- DETAILS TO BE PRESENTED IN AUGUST 19R5

- IMPLEMENT IN LATE 1986 w

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SCHEDULE FOR PRESENTATIONS, DOCUMENTATION AND IMPLEME!!TATION NOV. 1984 INITIAL PRESENTATION OF CONCEPTS MAR. 1985 DETAILED PRESENTATION OF IMPLEMENTATION AND REVIEW SCHEDULE APR. 1985 DETAILED PRESENTATION (PARTS A A B)*

MAY 1985 SONGS-2 CYCLE 3 " KICK-OFF" MEETING TO OUTLINE OVERALL LICENSING PLANS JUN. 1985 COLSS TOPICAL REPORT (FOR INFORMATION)

AUG. 1985 DETAILEO PRESENTATION (PART C PLUS UPDATE ON PARTS A A B)*

CPC UPDATED FUNCTIONAL DESIGH SPECIFICATION (PRIOR TO PROGRAM - FOR INFORMATION)

GENERIC SOFTWARE MODIFICATIONS AND METH000 LOGY DOCUMENTS (PARTS A & B)*

PLANT SPECIFIC M00lFICATI0tlS AND METHODOLOGY 00CUMENTS, IF NEEDED (SONGS)

REVISED SOFTWARE CHAf1GE PROCEntlRE FOR RELOAD OATA RLOCK AND ROR CONSTANT CHANGE PROCEntlRE (PART C)*

SONGS-2 CYCLE 3 RELOAD ANALYSIS REPORT AND TECH SPEC CHAf1GE 00CultE'lTATION

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'CPC TMPROVEMENT PROGRAM SCHEDULE FOR PRESENTATIONS, DOCUMENTATION AND IMPLEMENTATION (CONT'0)

NOV. 19R5 AN0-2 METHODOLOGY, ANALYSIS AND TECH-SPEC CHANGE DOCUMENTATION PHASE I/II TEST REPORT (SONGS)

JAN. 1986 PHASE I/II TEST REPORTS (ANO-2)

MAR. 1986 SONGS-2 CYCLE 3 STARTUP (IMPLEMENT PARTS A A B)*

ANO-2 MID CYCLE 5 IMPLEMEllTATION (PARTS A A B)*

MAY 1986 GENERIC SOFTilARE N00!FICATION 00CllMENT (PART C)*

JUL. 19R6 WATERFORD CYCLE 2 RELOAD ANALYSIS REPORT AND TECH SPEC CHANGE DOCUMENTATION SEP. 1986 PHASE T/II TEST REPORT (WATERFORD)

PVNGS-1 CYCLE 2 RELOAD ANALYSIS REPORT AND TECH SPEC CHANGE 00CllMENTATION NOV. 1986 WATERFORO CYCLE 2 STARTUP (INPLEMENT PARTS A, 8 A C)*

PHASE I/II TEST REPORTS (PALO VERDE)

JAN. 1987 PVNGS-1 CYCLE 2 STARTUP (IMPLEMENT PARTS A, 8 A C)*

i CPART A = OPTIMIZATION OF SOFTWARE FOR RELOADS PART B = CEAC DESENSITIZATION TO SPl!RIOUS S!GilALS PART C

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CPC IMPROVEMENT PROGRAft Sutt4ARY GOALS o

AVOID FUTURE CPC SOFTWARE CHANGES o

REDUCE UNNECESSARY PLANT TRIPS o

SIMPLIFY RELOAD ANALYSES o

PROGRAli o

OPTIMIZATION OF CPC/CEAC SOFTWARE FOR RELOADS o

CEAC DESENSITIZATION TO SPURIOUS SIGNALS RELOAODdTABLOCKCONSTANTS o

PLAN FOR INITIAL IMPLEMENTATION OPTIMIZATION OF SOFTWARE AND CEAC DESENSITIZATION o

FOR ANO-2 MID CYCLE 5 AND SONGS-2/3 CYCLE 3 o

RELOAD DATA BLOCK FOR WATERFORO-3 CYCLE 2 AND PVUGS-1 CYCLE 2 00CUtiENTATION FOR NRC REVIEW.

DETAILED PRESENTATIONS OF CPC MODIFICATIONS AND 0

METHODOLOGY o

CPC f100!FICATIONS AND fiETH000 LOGY 00CUPENTS o

PHASE I AND II TEST REPORTS 47

N COMBUSTION ENGINEERING, INC.

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