ML20155J491
| ML20155J491 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde, Arkansas Nuclear, Waterford, San Onofre, 05000000 |
| Issue date: | 05/31/1986 |
| From: | ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| To: | |
| Shared Package | |
| ML19298E013 | List: |
| References | |
| CEN-330-NP, CEN-330-NP-R, CEN-330-NP-R00, NUDOCS 8605230279 | |
| Download: ML20155J491 (17) | |
Text
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CPC/CEAC SOFTWARE MODIFICATIONS FOR THE CPC IMPROVEMENT PROGRAM RELOAD DATA BLOCK 9
CEN-330-NP Revision 00-NP May, 1986 COM8USTION ENGINEERING, INC.
Nuclear Pcwer Systems Power Systems Group Windsor, Connecticut i
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LEGAL NOTICE
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This report was prepared as an account of work sponsored by Combustion Engineering, Inc.
Neither Combustion Engineering nor any person acting on its behalf:
a.
Makes any warranty or representation, express or implied including the warranties of fitness for a particular purpose or merchantability, with respect to the accuracy, completeness, or usefulness of the information contained in this report, or that the use of any information, apparatus, method,'or process disclosed in this report may not infringe privately owned rights; or b.
Assumes any liabilities with respect to the use of, or for damages resulting from the use of, any information, apparatus, method or process disclosed in this report.
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TABLE OF CONTENTS Section No.
Title Page No.
TABLE OF CONTENTS 3
LIST OF FIGURES, TABLES 4
1.0 INTRODUCTION
5 1.1 REPORT SCOPE 5
1.2 REPORT
SUMMARY
6
2.0 DESCRIPTION
7 2.1 RDB SYSTEM DESCRIPTION 7
2.2 RELOAD DATA BLOCK CONSTANTS 7
2.3 LOADING OF THE RDB 8
3.0 REFERENCES
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LIST OF TABLES Table No.
Title Page No.
2-1 RDB Constants for TRIPSEQ 10
~2-2 RDB Constants for FLOW 11 2-3 RDB Constants for' UPDATE 11 2-4 RDP Constants for POWER.
13 2-5 RDP Constants for STATIC 15 2-6 RDP Constants for CEAC 17 i
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1.0 INTRODUCTION
1.1 PEPORT SCOPE The Core Protection Calculator System (CPCS) is designed to provide
' low DNBR and high local Power Density (LPD) trips to (1) ensure that the specified acceptable fuel design limits on departure from nucleate boiling and e.enterline fuel melting are not exceeded during Anticipated Operational Occurrences'(A00s) and (2) assist the Engineered Safety Features System in limiting the consequences of certain postulated accidents.
The COLSS/CPC Oversight. Committee, 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, has developed the CPC Improvement Program (CIP), 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 and a detailed presentation of the portions of the program scheduled for implementation in early 1986 was provided on April 18, 1985 ( Reference 3.6 ), upgraded for the complete program in November 1985.
The CPC Improvement Program consists of three major areas:
- Part A - Optimization of CPC/CEAC Software for Reloads
- Part 8 - CEAC Desensitization to Spurious Signals
- Part C - Reload Data Block Constants This document provides a complete description of the Reload Data Block feature, Part C.
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The modifications described in this document will apply to any of 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 which reference this document.
1.2 REPORT
SUMMARY
TheReinadDataBlock(ROB)isagroupofconstants[][
The PCB was created in order to This document provides a description of the RDB feature, the list of the constants in the PDB and a general description of the RDB System Loader.
The POB related changes will be implemented in the CPC/CEAC software and the modified sof tware will be tested in accordance with References 3.1 and 3.2.
S e
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2.0 DESCRIPTION
2.1 RDB SYSTEM DESCRIPTION The RDB feature was developed in order to The entire set of RDB constants will be on a stand-alone disk and the individual constants can be changed only by chanoing the value on the RDB disk and reloading the system software. Updating the RDB disk will be controlled by formal procedures. These procedures and qualified software tools l_,
will be used to ensure the cuality of the updated disk.
(See Reference 3.5)
The RDB related changes do not modify any of the protection algorithms defined in References 3.3 and 3.4.
2.2 RELOAD DATA BLOCX CONSTANTS Tables 7-1 through 2-6 show the constants of the routines TRIPSEQ, FLOW, UPDATE, POWER, STATIC and CEAC, resoectively, assigr.ed to the RDB. The assignment was based on a review of the non-addressable constants with respect to the benefits of being able to modify a partictlar constant The number of RCB constants was constrained to maintain consistency with the current CPCS design.
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2.3 LOADING OF THE RDB The RDB will be loaded by the RDB System Loader, a modified version
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of the standard system loader. This modified loade'r will follow the loading of the CPC (or CEAC) software with a request for the RDB disk and will load the appropriate RDR constants into the CPC (or CEAC) memory PDB space.
(See Reference 3.5.)
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3.0 REFERENCES
3.1 "CPC/CEAC Protection Algorithm Software Change Procedure",
CEN-39(A)-P, Rev. 3, January 1986.
- 3.2
" Quality Assurance of Design Manual for C-E Nuclear Power Systems."
3.3 "CPC Functional Design Requirements", CEN-305-P, Rev. 01, May 1986.
3.4 "CEAC Functional Design Requirements", CEN-304-P, Rev. 01, May 1986.
3.5
" Reload Data Block Installation Guidelines", CEN-323-P, January 1986.
3.6-
"CPC Improvement Program, Detailed Presentation to the NRC",
CEN-302(S)-P, April 1985.
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TABL E 2-1 RDB CONSTANTS FOR TRIPSEQ VARIABLE NAME VARIABLE DESCRIPTION t-o e
D m
i TABLE 2-2 R08 CONSTANTS FOR FLOW VARIABLE NAME VARIABLE DESCRIPTION N
e e
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TABLE 2-3 RDB CONSTANTS FOR UPDATE VARIABLE NAME VARIABLE DESCRIPTION 4
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TABLE 2-3 (continued)
VARIABLE NAME VARIABLE DESCRIPTICN e
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b i
e t
l l
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<e-
,~--,,-~.-e,
-,w--w.
,-, - - -r--e
-,--r--,--
,,,_,,,,,--,-,,-m,-
,----,,n- - -, - --, -,-,,+, - - -,
,---,,,,---,,,-r.,-,--,,,--
4 TABLE 2-4 RDB CONSTANTS FOR POWER VARIABLE NAME VARIABLE DESCRIPTION W
m 4
4 e
b i
I
.1 3[
.- =-
TABLE 2-4 (continued)
VARIABLE ttAME VARIABLE DESCRIPTION t
4 4
1 i
l 1
J 4
i 4
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- - -, -. -, - - - - - - -.,,,, ~. - -, - -, - - - - - - - - -, - - -
,-,.,----.n,--
--,,n-n,
,-.,,w,,~
-,..--_nn.aw--.
-.,,-,--gn,.y_,-
.n
-e,
>ve--
TABLE 2-5 RDB CONSTANTS FOR STATIC VARIABLE NAME VARIABLE DESCRIPTION i
4 o
5 1
i t
i 1
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TABLE 2-5 (continued)
VARIABLE NAME VARIABLE DESCRIPTION D
e N
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TABLE 2-6 RDB CONSTANTS FOR CEAC VARIABLE NAME VARIABLE DESCRIPTION O'
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