ML17300A870
| ML17300A870 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 05/29/1987 |
| From: | Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| 161-00247-JGH-L, 161-247-JGH-L, TAC-65694, NUDOCS 8706010435 | |
| Download: ML17300A870 (6) | |
Text
REGULATOR'; INFORNATIQN DISTRIBUTION TEN (RIDS>
ACCESSION NBR: 8706010435 DOC. DATE.: 87/05/2V NOTARIZED:
NQ DOCKET FACIL:BTN-50-528 Palo Verde Nuclear Station>
Unit 1> Arizona Publi 05000528 AUTH. NANE AUTHOR AFFILIATION HAYNES'. Q.
Arizona Nuclear Pouer ProJect
( formerly Arizona Public Berv RECIP. NANE RECIPIENT AFFILIATION KNIGHTQNi G. M.
OFfice of Nuclear Reactor Regulation.
Direc tor (851125-8704
SUBJECT:
ClariFies statement ref 87042'eeting w/NRC re Unit 1
Cycle 2 reload. Statement requiring clarification is third sentence of third paragraph of minutes re positive moderate temp c oeFFi c ent.
DISTRIBUTION CODE:
A001D CQPIEB RECEIVED: LTR ENCL SIZE:
TITLE:
QR Submittal:
General Distribution NOTES: Standardi zed plant. N. Davis. NRR: 1Cg.
05000528 RECIPIENT ID CODE/NANE PD5 LA LICITRA,E COPIES LTTR ENCL RECIPIENT ID CODE/MANE PD5 PD DAVIS~ N COP IEB LTTR ENCL INTERNAL: ACRB NRR/DEBT/ADE NRR/DOEA/TBB QGC/HDB1 EXTERNAL:,EQZcQ BRUSKE> 5 NRC PDR NOTES:
ARN/DAF/LFNB iRR/DEBT/ADB N
ILRB EG FILE 01; LPDR MBIC TOTAL NUNBER OF COPIES REQUIRED:
LTTR 26 ENCL QQ
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Arizona Nuclear Power Project P.o. BOX 52034
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PHOENIX, ARIZONA85072-2034 May 29, 1987 161-00247-JGH/LJM Director of Nuclear Reactor Regulation Attention:
Mr. George W. Knighton PWR Project Directorate k7 Division of Pressurized Water Reactor Licensing B
U.S. Nuclear Regulatory Commission Washington, D.C. 20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Unit 1
Positive Moderate Temperature Coefficient Docket No.
STN 50-528 (License NPF-41)
File: 87-B-056-026
Reference:
NRC Letter dated May 1, 1987,
Subject:
Summary of Meeting on Units 1
and 2 Cycle 2 Reloads
Dear Sir:
ANPP would like to take this opportunity to clarify a statement found in your minutes (Reference) of the April 22, 1987 meeting regarding Unit 1 Cycle 2 reload held between the NRC staff and ANPP.
The statement that requires clarification is the third sentence of the third paragraph of the minutes:
"The licensee stated that the were aware of this roblem and had reverified their calculations to ensure that the MTC followin reload would definitel be ne ative." It was never the intent of ANPP to imply that the Unit 1 Cycle 2 Moderator Temperature Coefficient (MTC) would be negative throughout the cycle under all operating conditions.
PVNGS Unit 1 will experience a positive MTC from zero power to approximately 30% full power for approximately the first 80 Effective Full Power Days (EFPD).
The statement that was intended by ANPP consisted of the following points.
- First, ANPP was aware of the Waterford-3 Cycle 2 M1'C experience, and is sensitive to the difficulties that that situation presented to the NRC staff and LP 5 L.
- Second, the design calculations for Palo Verde Unit 1 Cycle 2 and the proposed MTC Technical Specification to be submitted to the NRC staff have been prepared by ANPP to ensure that a similar experience does not occur at Palo Verde.
Finally, the M1'C at all power levels throughout the cycle will be well below the upper limit of the proposed Unit 1 Cycle 2 Ml'C Technical Specification that will be submitted in the Technical Specification changes accompanying the Reload Analysis Report.
We regret that this was not made clearer at the meeting and hope that this letter will ensure a full understanding to both parties of the existing situation.
8706010435 870529+
G.
M. Knighton Positive Moderator Temperature Coefficient 161-00 247 Page 2
Please contact Mr.
W. F. Quinn, extension (602) 371-4087 if you have further questions.
Very truly yours, J.
G.
Haynes Vice President Nuclear Production JGH/LJM/ls cc:
0.
M. De Michele E. E.
Van Brunt, Jr.
A. C. Gehr R.
P.
Zimmerman
1,
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