ML20133E785
| ML20133E785 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 10/03/1985 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-85, REF-PT21-85-413-000 (RDC-134(85)), PT21-85-413, PT21-85-413-000, PY-CEI-OIE-0100, PY-CEI-OIE-100, NUDOCS 8510100009 | |
| Download: ML20133E785 (3) | |
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e TiiE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY i
P.O. BOX 5000 - CLEVELAND, OHIO 44101 - TELEPHONE (216) 622-9800 - lLLUMINATING BLOG.
- 55 PUBLICSOUARE Serving The Best Location in the Nation MURRAY R. EDELMAN NCLEAR October 3, 1985 PY-CEI/OIE 0100 L Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE:
Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Flooding Due to Potential Circulating Water System Expansion Joint Failure in The Turbine Building
[RDC 134(85)]
Dear Mr. Keppler:
This letter serves as a final report pursuant to 10CFR50.55(e) on the conditions associated with potential flooding volumes within the Turbine Building due to potential circulating water system expansion joint failure.
Mr. J. McCormick-Barger of your office was notified on April 26, 1985, by Mr. T. Boss of The Cleveland Electric Illuminating Company (CEI) that this problem was being evaluated per Deviation Analysis Report 239.
On May 23, 1985, an interim report was submitted.
Description of Deficiency Potential flooding volumes due to postulated failure of a circu-lating water system expansion joint within the Turbine Building have increased and may cause:
(1) Hydrostatic uplift pressures under leismic Category I structures to increase above those cor-responding to El. 590'-0" design basis with earthquake, and (2) Water to enter Seismic Category I structures and affect safety-related equipment.
This condition was reported under 10CFR21 by Gilbert / Commonwealth Inc. in a letter dated April 19, 1984.
8510100009 851003 gDR ADOCK 05000440 PDR
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[ Mr.. Jam s G. Koppler October 3, 1985 PY-CEI/OIE 0100 L Analysis of Safety Imnlications As previously reported, Gilbert / Commonwealth (G/C) Inc. had re-evaluated the hydrostatic uplift pressures and demonstrated that they are below the design basis level of El. 590'-8".
Therefore, it has been determined that Item 1 above does not represent a significant deficiency.
In address of Item 2 above, all flow paths between flooded areas and Seismic Category I structures were evaluated.
It was deter-mined.that should a circulating water system expansion joint failure occur, flood water could enter the Intermediate Building potentially jeopardizing the safety-related equipment contained therein.
Corrective Action Design. Change Packages (DCPs 85-9386 and 85-9391) have been issued to upgrade one penetration seal in order to provide isolation of the-Intermediate Building.
In addition, during the course of our evaluation, some design changes were found to be necessary in order to meet certain FSAR commitments.
However, these conditions were determined not to have any impact on safety-related equipment.
They are as follows:
1.
In the Off-Gas and the Radwaste Buildings, penetration seals will be upgraded to provide the capability to withstand flooding (DCP 85-9386 and DCP 85-0391), and check valves will be added in the drain lines to prevent flood water back flow (DCP 85-8382).
2.
Access to the Heater Bay from the Turbine Building will be provided to permit storage of flood water in the Heater Bay (DCP 85-9392 and DCP 85-0386).
i Finally, our FSAR is being changed to reflect the isolation of j
the Intermediate Building, and other information obtained as a result of our analysis.
These changes are being submitted with Amendment 21, dated September 38, 1985.
If there are any questions, please call.
Sincerely, g
Murray R. Edelman i
Vice President Nuclear Group MRE:sab
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. 0ctobar 3, 1985 Mr. Jan:c G. Ksppler 3-PY-CEI/OIE 0100 L cc:
Mr. J. A. Grobe USNRC, Site Office (SBB50)
Director Office of Inspection'and Enforcement U.S. Nuclear Regulatory CommiP.Sion Washington, D.C. 20555 U.S.-Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Records Center, SEE-IN Institute of Nuclear Power Operations 1190 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 I
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