L-91-316, Forwards Nonproprietary WCAP-12960 & Proprietary WCAP-12959, Structural Evaluation of Turkey Point,Units 3 & 4, Pressurizer Surge Lines,Considering Effects of Thermal Stratification, Per Response to NRC Bulletin 88-011
| ML17348B301 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 12/13/1991 |
| From: | Plunkett T Florida Power & Light Co |
| To: | NRC/IRM |
| Shared Package | |
| ML17348B302 | List: |
| References | |
| TAC-M72176, TAC-M72177 IEB-88-011, IEB-88-11, L-91-316, NUDOCS 9112270213 | |
| Download: ML17348B301 (4) | |
Text
ACCELERATED DISTIuBUTION DEMONSTRATlON SYBIL'j"M I
~ t1 REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9112270213 DOC.DATE: 91/12/13 NOTARIZED: YES DOCKET g
FACIL:50-250 Turkey Point Plant, Unit 3, Florida Power and Light C 05000250 50-251 Turkey Point Plant, Unit 4, Florida P wer and Light C 05000251 AUTH.NAME AUTHOR AFFILIATION
~~~~pi-JB. dO F-PLUNKETT,T.F.
Florida Power
& Light Co.
RECIP.NAME RECIPIENT AFFILIATION
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R Document Control Branch (Document Control Desk)
SUBJECT:
Forwards nonproprietary WCAP-12960
& proprietary WCAP-12959, "Structural Evaluation of Turkey Point, Units 3
& 4, Pressurizer Surge Lines, Considering Effects of Thermal Stratification," per response to NRC Bulletin 88-011.
DISTRIBUTION CODE'E30D COPIES RECEIVED LTR J ENCLi SIZE
+ 9- /I TITLE: Bulletin 88-11 Pressurizer Surge Line THermal Stratification NOTES
.D RECIPIENT ID CODE/NAME PD2-2 LA AULUCK,R INTERNAL: AEOD/DOA NRR CHAN,T NRR KUO,P NRR/DOEA/OEAB11 NRR/DREP/PEPB9D NRR/PMAS/ILRB12 RES/DSIR/EIB COPIES LTTR ENCL 1
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RECIPIENT ID CODE/NAME PD2-2 PD AEOD/ROAB NRR HOU,S NRR/DET/EMEB 7E NRR/DOEA/OGCB11 NRR/DST 8E2 RGN2 FIL'E 01 COPIES LTTR ENCL 1
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D NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAMEFROM DISTtuBUTION LISIS FOR DOCUMENTS YOU DON'T NEEDI TOTAL NUMBER OF COPIES REQUIRED:
LTTR 19 ENCL 18
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U.
S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.
C.
20555 Re:
Turkey Point Units 3 and 4
Docket Nos.
50-250 and 50-251 Bulletin 88-11 Pressurizer Surge Line Thermal Stratification TAC 72176 and( 72177 I.-91-316 OE.C 18 $91 Gentlemen:
By letter L-90-424 dated January 2r 1991r Florida Power and Light Company (FPL) provided the status of Turkey Point Units 3 and 4
response to Bulletin 88-11.
Included in the response to part 1.d.
of this bulletin, FPL stated that Turkey Point's plant specific analyses would be incorporated into the existing analyses documentation of record by December 31, 1991.
These
- analyses, entitled "Structural Evaluation of Turkey Point Units 3 and 4 Pressurizer Surge Lines, Considering the Effects of Thermal Stratification", are provided in the enclosed Westinghouse Reports WCAP-12959 (proprietary) and WCAP-12960 (non-proprietary).
Also enclosed are a Westinghouse authorization letter, CAW-91-174, accompanying affidavit, Proprietary Information Notice, and Copyright Notice.
The plant specific analyses were completed on June 17, 1991.
The results of the analyses were incorporated into the existing documentation of record by July 19, 1991.
The analyses demonstrate acceptable pressurizer surge line stress levels and fatigue life for the remaining plant life of each unit, considering the effects of thermal stratification.
This acceptability is contingent on modifications to the surge line spring hanger to accommodate surge line thermal stratification displacement.
The analyses assumes five additional heatup/cooldown cycles (following January 1,
1991) will occur before the spring hanger modification is completed.
The spring hanger modification will assure surge line piping stresses and cumulative usage factors remain acceptable for the remainder of the licensed 40 year operating life of the plant.
These modifications will be performed during the next refueling outage currently scheduled to start August 24, 1992 for Unit 3 and April 11, 1993 for Unit 4.
WCAP-12959 contains information proprietary to Westinghouse Electric Corporation.
An affidavit signed by Westinghouse, the owner of the information, is provided.
The affidavit provides the basis upon which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of Section 2.790 of 911227021= 9ii2i~
PDR ADOCK 0 Ot:ra<.>O an FPL Group company QIL1,rr pygmy r gfllg'
L-91-316 Page 2
Title 10 Code of Federal Regulations.
Accordingly, FPL requests that the information proprietary to Westinghouse be withheld from public disclosure.
Correspondence with respect to the copyright or proprietary aspects of the items listed above or the supporting Westinghouse Affidavit should reference CAW-91-174 and should be addressed to R. P. DiPiazza, Manager of Operating Plant Licensing Support, Westinghouse Electric Corporation, P.O.
Box 355, Pittsburgh, Pennsylvania 15230-0355.
Should there be any questions, please contact us.
Very truly yours, T. F. Plunkett Vice President Turkey Point Nuclear Attachments TFP/RJT/rt CC:
Stewart D. Ebneter, Regional Administrator, Region 1I, USNRC (w/o attachments)
Senior Resident XnspectorI USNRCI Turkey Point Plant (w/o attachments)