L-84-125, Forwards PWR Lattice Physics Methods at Florida Power & Light Co. Rept Documents Benchmarking for Methodology Used to Obtain Lattice Physics Parameters for Pressurized Thermal Shock Issue
| ML17346A349 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 05/10/1984 |
| From: | Williams J FLORIDA POWER & LIGHT CO. |
| To: | Varga S Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17346A350 | List: |
| References | |
| REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR L-84-125, NUDOCS 8405160403 | |
| Download: ML17346A349 (6) | |
Text
REGULATOR I4FORMATION DISTRIBUTION S, EM (RIOS)
ACCESSION NBR:8405260403 DOC ~ DATE: 84/05/10 NOTARIZED'O DOCKET FACIL:50-.250 Turkey Pojnt Planti Unjt 3i Florjda Power and Ljght C
05000250 50-251 Turkey Point Planti Unit 4i Florida Power and Light C
05000251 AUTH~ NAME AUTHOR AFFILIATION HILLIAMSRJ ~ 14 ~
Florida Power 8 Light Co.
RKCLP NAME RECIPLKNT AFFILIATION VARGAPS ~ AD Operating Reactors Branch 1
SUBJECT:
Forwards "PNR Lattice Physics Methods at Florida Power 8
Light Co ~ " Rept documents, benchmarkinq for methodology used to obtain lattice phys.ics parameters for pressurized thermal shock issue.
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FLORIDA POWER & LIGHTCOMPANY May 10, 1984 L-84-125 Office of Nuclear Regulation Attention:
Mr. Steven A. Varga Chief Operating Reactors Branch ¹1 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
Subject:
Turkey Point Units 3 Cx h Docket Nos. 50-250, 50-251 Pressurized Thermal Shock
Reference:
1.
Florida Power 6 Light Company Vessel Flux Reduction Program presentation.
Letter from R.E. Uhrig (FPL) to S.A. Varga (USNRC), March 25, 1983 L-83-180.
2.
Pressurized Thermal Shock - Near Term Flux Reduction Program Turkey Point Plant Units 3 and 4. Letter from S.A. Varga to R. E. Uhrig, November 17, 1983.
Dear Mr. Varga:
The attached To ical Re ort PWR Lattice Ph sics Methods At Florida Power 6 Li ht
~Com an (forty copies ls submitted for your review and approval.
This report is the first in a series of topical reports on FPL reactor physics methodology
~ in support of vessel flux reduction commitments (Reference
- 1) relative to the Pressurized Thermal Shock (PTS) concerns at Turkey Point Units 3 and 4 (Docket Nos. 50-.250 and 50-251). Specifically, FPL is committed to evaluating vessel flux resulting from core fuel management alternatives.
The methods used in these evaluations:are being documented by this series of Topical Reports.
The first report documents the CHEETAH lattice physics methodology in use at FPL as a Lattice Physics Topical Report. The specific purpose of this topical is to document the benchmarking for the methodology used to obtain lattice physics parameters for fuel and light absorber nuclides in FPL pressurized. water reactor cores.
s The nexi topical report willsupport the FPL PDQ-7 model for use in core analysis and prediction of pin powers.
The third topical willsupport the actual vessel flux transport methods using DOT 4.3. The vessel flux willbe evaluated for the two Turkey Point Units on a cycle by cycle basis to determine and maintain the flux reduction required to alleviate PTS concerns.
This FPL Lattice Physics Model is used as the basis for generat(on of data requested (Reference 3I for vessel flux teduction verification for Turkey Point Units 3 and 4.
1 8405ih0403 840510
'PDR ADOCK 05000250 P
PDR sdh 4'Sj@OO PEOPLE...SERVING PEOPLE
II iN A
It is our intention to use the PPL Lattice Physics Model for development of input data for use,in future safety-related licensing applications associated with Turkey Point
'Units 3 and 4 (Docket Numbers 50-250 and 50-251 respectively) and St. Lucie Units 1 and-2 (Docket Numbers 50-335 and 50-389 respectively).
I'eview and approval for licensing applications on these Docket Numbers is requested by October 1, 1984.
We have. determined that this request for approval involves Class IIIand three Class I fees.
Accordingly, a check for $5,200 is enclosed.
Very truly yours,
~
~
~
J.W.. Williy,Jr.
Vice Pres( ent, Nuclear Energy Attachments cc:
J.P.O'Reilly, Region II Harold P. Reis, Esquire PNS:L 1-83-154-1
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