ML17304B067
| ML17304B067 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/06/1989 |
| From: | Karner D ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 161-01732-DBK-J, 161-1732-DBK-J, IEB-88-011, IEB-88-11, NUDOCS 8903210121 | |
| Download: ML17304B067 (8) | |
Text
AC CE1Z RATED D
Bt 'Tl0~
DE M0~ ~
Tl04 Fr'STEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
'1
. ACCESSION NBR:8903210121 DOC.DATE: 89/03/06 NOTARIZED: YES DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit. 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION KARNER,D.B.
Arizona Nuclear Power Project (formerly Arizona Public Serv RECIP.NAME RECIPIENT AFFILIATION.
Document Control Branch (Document Control Desk)
SUBJECT:
Responds to NRC Bulletin 88-011, "Pressurizer Surge Line Thermal Stratification."
DISTRIBUTION CODE:
IE11D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: Bulletin Response (50 DKT)
R NOTES:Standardized plant.
Standardized plant.
Standardized plant.
05000528 /
05000529 05000530 h,
RECIPIENT ED C~ODE NAME PD5 LA CHAN,T DAVIS,M.J.
INTERNAL: AEOD/DOA NRR/DEST/ADE 8H NRR/DEST/MEB 9H NRR/DOEA/GCB 11
~NEE~MA@ILRB2. 2 RGN5 FILE 0 1 EXTERNAL: LPDR NSIC NOTES:
COPIES LTTR ENCL RECIPIENT I~DCODE NAME PD5 PD DAVIS,M AEOD/DSP/TPAB NRR/DEST/ADS 7E NRR/DOEA/EAB ll NRR/DREP/EPB 10 NUDOCS-ABSTRACT RES/DSIR/EIB NRC PDR COPIES LTTR ENCL NarE-IO ALL 22RIDSii RECIPrWrS:
PLEASE HELP US IO REDUCE HASTE COHIACI'HE DOCUMEHI COPIROL DESK 2 ROOM Pl-37 (EXT. 20079) K) ELIlQMATE YOUR NAME FKH DISTIGBVZIQN LIPIS FOR DOCUMKÃIS YOU DON'T NEZDt TOTAL NUMBER OF COPIES REQUIRED:
LTTR 22 ENCL D
S
(
Arizona Nuclear Power Project P.O: 8OX 52034
~
PHOENIX. ARIZONA85072-2034 161-01732-DBK/JMQ March 6, 1989 Docket Nos.
STN 50-528/529/530 Document Control Desk U.S. Nuclear Regulatory Commission Mail Station Pl-137 Washington, D.C.
20555
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2 and 3
Response
to NRC Bulletin No. 88-11, "Pressurizer Surge Line Thermal Stratification" File:
89-055-026 As requested by the subject NRC Bulletin, the purpose of this letter 'is to inform the staff of actions taken to resolve NRC concerns associated with the issue of Pressurizer Surge Line Thermal Stratification; The Combustion Engineering Owners Group (GEOG) became aware of this issue in April of 1987 when INPO issued a draft SER on surge line thermal cycling observed in a
German nuclear" plant.
The GEOG proceeded to initiate a
data collection program in June 1987 followed by actual data collection activities at two GEOG plants in June and August of 1988.
In October
- 1988, the GEOG authorized the ongoing GEOG program, "Reduction and Analysis of Pressurizer Surge Line Data Collected from GEOG Plants",
to address surge line thermal stratification concerns.
NRC Bulletin 88-11 was subsequently issued in December 1988.
Action No.
1.b requested that within four months of receipt of the
- Bulletin, licensees of plants in operation over ten years demonstrate that the pressurizer surge line meets the applicable design codes and other FSAR and regulatory commitments for the licensed life of the plant.
The staff suggested that this could be accomplished by performing a plant specific or generic bounding analysis.
Licensees of plants in operation less than ten years were requested to complete the, analysis within one year.
These NRC Bulletin items prompted the GEOG to request a meeting with the NRC staff.
The NRC staff. and the GEOG met on February 13, 1989 in the White Flint NRC offices.
During this meeting, the GEOG presented the goals and scope of the ongoing GEOG surge line program which included a presentation of actual plant data and a discussion on the issue of thermal striping.
The GEOG then requested relief from the four month/one year schedule requirement in Requested Action 1.b and suggested that the GEOG program be allowed to proceed on schedule.
89I.I"'2:lOl-1 8903G6 F Dl>>
I-"IDIICIC O50005$
=:
9 I X~I:
pp/
I/g
1
U.S. Nuclear Regulatory Commission Page 2
161-01732-DBK/JMQ March 6, 1989 As a result of this meeting, the GEOG and NRC staff agreed on several action items to be completed as follows:
1.
The GEOG will perform a preliminary bounding evaluation of GEOG surge lines using actual data collected from GEOG plants by July 1,
1989.
This activity will address the intent of Requested Action 1.b for plants in operation over 10 years.
2.
Actual plant data will be used to define loading conditions for input to the fatigue and stress evaluations.
3.
The GEOG agreed to meet with NRC staff to discuss the load definitions prior to finalizing the bounding analysis described in item 1 above.
support the above action items for responding to NRC Bulletin 88-11 Action 1.b.
On issuance of this
- letter, Reporting Requirement 2
in the Bulletin is considered to be appropriately addressed.
D. B. Karner Executive Vice President DBK/JMQ/vlb cc:
A. C.
Gehr (all w/a)
T. J. Polich T. L. Chan M. J. Davis J.
B. Martin
h
STATE OF ARIZONA
)
) ss.
COUNTY OF MARICOPA)
I, Donald '.
Karner, represent that I am Executive Vice President of Arizona Nuclear Power
- Project, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, that I have read such document and know its contents, and that to the best of my knowledge and belief, the statements made therein are truest Donald B. Karner Sworn to before me this day of 1989.
My Commission Expires:
Vs)'GiilA1lÃfi"AExp'lft~s /Lplil 6, 199]
Notary Public I
0
~+
]I