ML20094M407
| ML20094M407 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 03/26/1992 |
| From: | Tremblay L VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| BVY-92-36, NUDOCS 9203310210 | |
| Download: ML20094M407 (3) | |
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VI!RMONT YANKEE NUCLEAlt POWEli CORPOllATION Ferry Road Brattletmro. VT 053014002 D{j(1 f
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v ymm March 26,1992 United States Nuclear Regulatory Conunission llVY 92 36 A'ITN: Document Control Desk Washington, DC 20555
References:
(Listed on Page 31
Subject:
RELAP5YA Application for Vennont Yankee LOCA Analysis Dear Sir; i
lly letter datrd January 14,1983 l Reference (b)], Yankee Atomic Electric Company (YAl!C) submhted RELAPSYA, a Computer Program for Light Water Reactor System Thermal llydraul;c Analysis, to the NRC for review ar.d licensing approval. This program was developed by YAEC to facilitate improved Loss-of Coolant-Accident (LOCA) analyses.
By letter dated June 27,1986 l Reference (n)), Vennont Yankee Nuclear Power Corporation (VYNPC) submitted YAEC Report 1547, entitled "Vennont Yankee llWR Loss of Coolant Licensing Analysis Method" This repott describes the methodology proposed for Vermont Yankee Nuclear Power Station to perform full break spectra (sire nnd location) cycle independent LOCA ECCS licensing analyses in full compliance with applicable USNRC regulations as contained in 10CFR56.46 and 10CFR50 Appendix K. The report contained a detailed description of the RELAPSYA input model for Vennor Yankee and sample LOCA calculations perfonned with this nvxiel.
By letter dated August 25,1987 [ Reference (o)], USNRC approved the RELAP5YA program for use in perfonning best estimate LOCA analyses for Vermont Yankee. lly letter dated 4
October 6,1989 l Reference (p>j, Vermont Yankee provided supplementary infonnation penalning to our RELAP5YA LOCA methodology for the purpose of justifying the use of the program in F, valuation Methodology analyses for Vennont Yankee, following the 10CFR50 Appendix K approach.
Sh.ee the Reference (p) submittal and during the course of NRC review, the RELAP5YA heat transfer rnodel has been modified and additional sample LOCA calculations have been performed for Vennont Yankee with the revised RELAP5YA code IReferences (q) timmgh (z)).
Dased upon a meeting held at NRC headquarters on March 18,1992, all outstanding issues now appear to be resolved. Written NRC approval ine!ading a Safety Evaluation Repon is expected to be issued shortly, it is our intention to revise YAEC Report 1547 to include the supplementary information
. provided since the original issuance of this report (Reference (n)) regarding the application method
- and sample calculations. This report will constitute YAEC Report 1547, Revismn 1. Given that revision of YAEC 1547 is strictly an administrati e effort and will not change tne technical aspects of our methodology, it is our understanding that issuance of NRC approval of the subject 3
rnethcdolay will occur independent of our revision of YAEC 1547.' A copy of this revised report j
will be provided to NRC upon completion, 9203310210 900326 I
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fDH ADOCK 05000271 PDR v~-
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VLIO 10N T YANKtT. NOCL I Alt l'OWI 14 Coltl>Ot t A'T ION United States Nuclear Peguhtory Conunission Marcl: 26,1992 l' age 2 We tren t;ia, this infonnation is helpful in your ciforts to finalize approv.il of the subject methablogy. Should ycu have adoitional questions, plc on,e contact this of fice, i
Yery truly yours, VEM10NT Y ANKl:E NUCl1. AR l'OW11R Colin'ORNiloN (a'q\\,
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Iranard A Tremblay, h,
.j Sealot I.ieensing,1:npincer ec:
USNitC llegion 1 Administrator USNitC llesident inspector YYNI'S USNitC l'roject Manager VYN1'S Mr. Lambrose Lois - USNitC s
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i vEllMONT Y ANK E E NUCt.E Al1 POWEll COI1Por1 AT ION i
Uniteil States Naclear Regulatory Conunission
' h1 arch 26,1992 i
Fage 3 Refestnces: - a.
License No. DPR 28 (Docket No. 50-271).
b.
lxtter, YAEC to USNRC, FVY 83-4, dated January 14,1983.
c.
Letter, USNRC to htYAPCO, NhtY 84 91, dated hiay 11,1984.
i d.
L.ctter, USNRC to YAEC, dated January 3,1985.
i c.
Lxtter, htYAPCO to USNRC, dated January 31,1985.
f, Lctier, YAEC to USNRC, FVY 8518, dated h1 arch 1,1985.
letter USNRC to VYNPC, NVY 85 48, dated Alarch 14,1985.
.1.
letter, YAEC to USNRC, FYR 85-48, dated April 30,1985.
1.
letter YAEC to USNRC, FYR 85 72, dated July 1,1985.
l.
Letter, YAEC to USNRC, FYR 85 87, dated August 15,1985.
Ic.
Ietter, VYNPC to USNRC, FVY 85 98, dated October 22,1985.
1.
Letter, YAEC to USNRC, FYR 85 121, dated November 1,1985.
- a.
I cite
- VYNPC to USNRC, FVY 85122, dated Decender 31,1985.
n.
Letter VYNPC 'n USNRC, FVY 8G61, dated June 27,1986.
o.
Letter, USNRC to V YNPC, NVY 87136, dated August 25,1987.
p.
Letter, VYNPC to USNRC, i!YY ?9-91, dated Octotxt 6,19t19.
q.
- Letter, VYNPC to USNRC, llV Y 90-28, dated h1 arch 9,1990.
r.
Letter, USNRC to VYNPC, NVY 90-108, dated June-7,1990, s.
letter, VYNPC to USNRC,ilVY 90 087, dated August 28,1990.
t.
letter, USNRC to VYNPC, NVY 90-214, dated December 5,1990.
u.
- l. citer, VYNPC to USNRC, IIV Y 91-05, dated January 9,1991.
v.
letter, USNRC to VYNPC, NVY 9126, dated February 27,19_91.
letter, USNRC to VYNPC, NVY 9154, dated April 11 1991.
w.
x.
letter, VYNPC to USNRC,11VY 9141, dated April 19,1991.
y.
Letter, VYNPC to USNRC,llVY 9212, dated February 7,1992.
z.
letter, VYNPC to USNRC, !!VY 92 29, dated h1 arch 6,1992.
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