ML17325B127
| ML17325B127 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 01/30/1989 |
| From: | Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| AEP:NRC:1081, NUDOCS 8902070104 | |
| Download: ML17325B127 (10) | |
Text
AC CELE RATED DI~BUTI0%
DE MONSTR1 0Y SY) TEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
DOCKET 05000315 05000316
SUBJECT:
Requetsts review
& approval of util reacot core thermal-hudraulic analysis using COBRA IIIC/MIT-2 computer code.
DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR ENCL SIZE-TITLE: OR Submittal:
General Distribution NOTES ACCESSION NBR:8902070104 DOC.DATE: 89/01/30 NOTARIZED: NO FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Indiana 50-316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana AUTH.NAME AUTHOR AFFILIATION ALEXICH,M.P.
(formerly Indiana
& Michigan Ele RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
RECIPIENT ID CODE/NAME PD3-1 LA STANG,J INTERNAL: ARM/DAF/LFMB NRR/DEST/CEB 8H NRR/DEST/MTB 9H NRR/DEST/SICB NUDQ AB CT FILE EXTERNAL: LPDR NSIC COPIES LTTR ENCL RECIPIENT ID CODE/NAME PD3-1 PD NRR/DEST/ADS 7E NRR/DEST/ESB 8D NRR/DEST/RSB 8E NRR/DOEA/TSB 11 OGC/HDS1 RES/DS IR/EIB NRC PDR COPIES LTTR ENCL NOTE 'lO ALL "RIDS" RECIPIEZIS:
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Indiana h%chigan Power Company P.O. Box 16631 Coiumbus. OH 43216 IHDIAHA NICHIGAH POWER AEP: iVRC: 1081 Donald C.
Cook Nuclear Plant Units 1 and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 REQUEST FOR REVIEW OF AEP REACTOR CORE THER."IAL-HYDRAULIC AiVALYSIS USING THE COBRA IIIC/MIT-2 COMPUTER CODE U.S.
iVuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.
20555 Attn:
T.
E. Murley January 30, 1989
Dear Dr. Murley:
The purpose of this letter is to request your review and approval of the topical report entitled "AEP Reactor Core Thermal-Hydraulic Analysis Using the COBRA IIIC/MIT-2 Computer Code."
To facilitate your review, we have enclosed 10 copies of the report.
The thermal-hydraulic methodology contained in this report is applicable to both units of the Donald C.
Cook Nuclear Plant.
We intend to use this methodology for licensing applications beginning with Cycle 12 of Unit 1.
Cycle 12 operation is scheduled for early 1991; therefore, your approval of this report is requested by July 1990.
Development of the topical report is consistent with the NRC goals as outlined in Generic Letter 83-11, "Licensee Qualification for Performing Safety Analyses in Support of Licensing Actions."
In that letter, the NRC acknowledged and encouraged the efforts of utilit es to develop the capability to perform their own safety analyses using large, complex thermal-hydraulic computer codes.
Generic Letter 83-11 stated that licensees should demonstrate their proficiency in using the code by performing code verifica-tion in-house and submitting a report to the NRC for review.
e~l~+
I (II S5'02070104 890130 PDR ADOCK 05000315 P
PDC The topical report contains seven sections.
Section 1 is an introduction.
Section 2 describes briefly the COBRA IIIC/MIT-2 computer code and various correlations/options used in the analysis.
The hydraulic and thermal models are described in Sections 3 and 4, respectively.
The engineering uncertainties applied to the thermal-hydraulic model are described in Section 5.
Section 6 describes the specific analyses performed and comparisons of American Electric Power (AEP) results with those given in the licensing documents'onclusions are provided in Section 7.
The references cited in the topical report are available in the open literature.
Z
Dr. T.
E. Murley AEP:NRC:1081 The COBRA IIIC/MIT-2 computer code is a public domain code and was obtained from the Massachusetts institute of Technology.
The code was installed, 'erif ed, and validated on the AEP computer system following our corporate software Quality Assurance Program.
The code m'anual (Reference 5 of the topical report) includes the input preparation method and sample problems for the pressurized water reactor core.
These sample problems were followed to model the core of Unit 1 of the Cook Nuclear Plant.
The limitations applicable to this methodology are delineated in the text of the topical report.
The thermal-hydraulic methodology described in the topical report is based on a single stage
- method, which is described in Reference 1 of the report.
This method has previously been used by the Virginia Electric Power Company (VEPCO) for departure from nucleate boiling (DNB) analyses for the Surry Nuclear Power Station.
VEPCO submitted their topical report to the NRC on September 28,
- 1979, and it was accepted by your staff on August 26, 1983, for licensing application.
The accuracy of the thermal-hydraulic methodology contained in this report has been verified using data from Cycle 1 of the Cook Nuclear Plant Unit 1.
Three steady state and three transient DNB analyses were performed using this methodology.
For the transients
- analyzed, the minimum DNB results obtained are within
+1.5 percent of those given in the original Final Safety Analysis Report (FSAR) for Unit 1 of the Cook Nuclear Plant.. The Unit 1 Cycle 1 FSAR analyses were performed using Vestinghouse Electric Corporation's THING computer code.
The methodology presented in this report will be initially used for plant operational
Our ultimate use of the methodology will be for reload evaluations and licensing submittals to the NRC.
A check in the amount'. of $ 150.00 is enclosed with this letter for NRC processing of the aforementioned request.
This document has been prepared following Corporate procedures.
which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.
Sincerely, M.
. Alexich Vice President ldp Attachments
Dr. T.
E. Murley AEP:NRC:1081 cc:
D.
H. Williams, Jr.
W.
G. Smith, Jr.
- Bridgman R.
C. Callen G. Charnoif A.
B. Davis NRC Resident Inspector
- Bridgman G.
Bruchmann
AMERICANELECTRIC POWER SERVICE CORPORATION DATE MEMO TO:
FROM 7155P43)IAP50 OM 14 (AD 16)
~PPvIERICAN ELECTRIC POWER SERVICE CORPORATION DATE MEMO TO:
guA FROM 7155P.83)IAP50 OH 14 (AD 16)
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