ML17346A295
| ML17346A295 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/16/1984 |
| From: | Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| Shared Package | |
| ML17346A290 | List: |
| References | |
| NUDOCS 8404130049 | |
| Download: ML17346A295 (4) | |
Text
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, UNITED ST'ATES NUCLEAR REGUt.ATORY COMMISSION WASHINGTON, D. C. 20555 MAR16 )g~
Florida Power and Light Company ATTN:
Dr.
R.
E. Uhrig, Vice President Advanced Systems and Technology P.O.
Box 5291000 Miami, Florida 33152 Gentl emen:
Subject:
Case Study Report - Low Temperature Overpressur e Events at Turkey Point Unit 4 Following resolution of peer review comments, we have completed the enclosed study of low temperature overpressure events.
This study concentrates on two over'pressure events that occur red at Turkey Point, Unit 4, but also considers related events at other pressurized water reactors occurring after 1979 when the staff resolved the generic issue entitled; "Reactor Ves'sel Pressure Pro-tection (Overpressure Protection)."
The report provides:
(1) an analysis and evaluation of the Turkey Point events; (2) a review of operating events that have challenged the low temperature over-pressure protection (LTOP) systems; (3) evaluation of the LTOP technical speci'-
fications; (4).an evaluation of water solid operation during the low temperature regime; and (5) recommendations that, if implemented, could reduce challenges to the overpressure.protection system and strengthen its mitigatory capability to minimize the potential severity of overpressure events.
The recommendations contained in this report are under review within the Nuclear Regulatory Commission.
The report is being forwarded for your information and use as you deem appropriate.
If you have any questions regarding this report, please contact Wayne D. Lanning of my staff., Mr. Lanning can be reached at (301) 492-4433.
Sincerely,
~o
- C..
e es, J., Director Of c
for Anal s and Evaluation of Operational Data
Enclosure:
As stated 8404i30049 8403ib
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MAR 18 ]ggy Flor ida Power and Light Company ATTN:
Dr. R. E. Uhrig, Vice President Advanced Systems and Technology P.O.
Box 6291000 Niami, Fl orida 33152 DISTRIBUTION:
797 AEOD CF ROAB CF ROAB RF WLanning KVSeyfrit TAIppo1 ito CJHeltemes Gentlemen:
Subject:
Case Study Report - Low Temperature Overpressure Events at Turkey Point Unit 4 Following resolution of peer review comments, we have completed the enclosed study of low temperature overpressure events.
This study concentrates on tIio overpressure events that occurred at Turkey Point, Unit 4, but also considers related events at other pressurized water reactors occur ring after 1979 when the staff resolved the generic issue entitled, "Reactor Vessel Pressure Pro-tection (Overpr essure Protection)."
The report provides:
(1) an analysis and evaluation of the Turkey Point events; (2) a review of operating events that have challenged the low temperature over-pressure protection (LTOP) systems; (3) evaluation of the LTOP technical speci-fications; (4) an evaluation of water solid operation during the low temperature regime; and (6) recommendations that, if implemented, could reduce challenges to the overpressure protection system and strengthen its mitigatory capability to minimize the potential severity of overpr essure events.
The recommendations contained in this report are under review within the Nuclear Regulatory Commi.ssion.
The repor t is being forwarded for your information and use as you deem appropriate.
If you have any questions regarding this report, please contact Wayne D. Lanning of my staff.
Nr. Lanning can be reached at (301) 492-4433.
Sincerely, Original signed by:
C. J. Heltemes, Jr.
Enclosure:
As stated C. J. Heltemes, Dr., Director Office for Analysis and Evaluation of Operational Data OFFICE)
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