ML17346A294
| ML17346A294 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/16/1984 |
| From: | Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | John Marshall ARKANSAS POWER & LIGHT CO. |
| Shared Package | |
| ML17346A290 | List: |
| References | |
| NUDOCS 8404130048 | |
| Download: ML17346A294 (4) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMlSSION WASHINGTON, D. C. 20555 MAR 1 6 tg84 Arkansas Power and Light Company ATTN:
John Marshall, Manager Licensing P.O.
Box 551 Little Rock, Arkansas 72203 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 two overpressure events that occurred 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 Vessel 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 overpressur e.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, C.
J
- eltemes, r
, Director Offic for Analysis and Evaluation of Operational Data
Enclosure:
As stated 8404130048 840316.
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Arkansas Power and Light Company ATTN:
John marshal 1, thanager Licensing P.O.
Box 551 Little Rock, Arkansas 72203 Gentlemen:
MAR 18 ~gsy DISTRIBUTION:
QQ AEOD CF ROAB CF ROAB RF WLanning KVSeyfrit TAIppolito CJHeltemes Sub)ect:
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 two overpressure events that occurred 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 Vessel Pr essure 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.
ttr. Lanning can be reached at (301) 492-4433.
Sincerely, Original signed by:
Q. J. Heltemes, Zr
Enclosure:
As stated
'. J. Heltemes, Jr., Director Office for Analysis and Evaluation of Operational Data OFFICE)
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NRC FORM 31e110/801NRCM 0240 OFFICIAL RECORD COPY Q V.S. GPO 1983~00.247
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