ML20071P375
| ML20071P375 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 10/22/1982 |
| From: | Matlock R WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, GO-82-863, NUDOCS 8211020491 | |
| Download: ML20071P375 (2) | |
Text
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Docket No. 50-397 50.55(e) Report
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g Washington Public Power Supply System 6B/
-5 Gp P.O. Box 968 3000 GeurgeWashington Way Richland, Washington 99352 (509)3 Q
Docket No. 50-397 49 9 NCing,,:.
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October 22, 1982 G02-82-863 Mr. R. H. Engelken U.S. Nuclear Regulatory Commission Region V 1450 Maria Lane, Suite 210 Walnut Creek, california 94596
Subject:
NUCLEAR PROJECT NO. 2 10CFR50.55(e) REPORTABLE CONDITION #212 RAYPR00F 000RS (8-H)
Reference:
Telecon dated September 23, 1982, L. C. Floyd to J. Elin, same subject.
In accordance with the provisions of 10CFR50.55(e), your office was informed, by telephone, on September 23, 1982, of a potentially reportable condition regarding the Rayproof 8-H Special Doors. Attachment A provides the Project's final report on Condition #212.
If there are any questions concerning this matter, please contact Roger Johnson, (509) 377-2501, extension 2712.
I 7dd
. G. Matlock Program Director, WNP-2 LCF/kd
Attachment:
Final report cc:
W.S. Chin, BPA - Site A. Forrest, Burns and Roe - HAPO N.D. Lewis, NRC J. Plunkett, NUS Corp.
R.E. Snaith, Burns and Roe - NY V. Stello, NRC A. Toth, NRC Resident Inspector - WNP-2 WNP-2 Files 917B Oho!$o8$$7 h
PDR V
3 WASHINGTON PUBLIC POWER SUPPLY SYSTEM NUCLEAR PROJECT NO. 2 DOCKET NO. 50-397 LICENSE NO. CPPR-93 RAYPR00F 8-H SPECIAL D0 ORS 10CFR50.55(e) CONDITION NO. 212 FINAL REPORT DESCRIPTION OF DEFECT OR NONCOMPLIANCE Interior watertight doors failed leak tests when they were subjected to hydro-static pressure applied in a direction which unseats the door from the frame.
These doors are required to provide watertight construction between pump rooms housing safety related equipment in the basement of the reactor building.
SAFETY IMPLICATION Pump rooms in the reactor building basement are designed such that flooding in one pump room is confined to that room, and therefore, does not affect redundant trains of safety-related equipment located in other rooms. These rooms are inter-connected by doors designed to remain watertight during flooding resulting from postulated breaks in piping.
If these doors were to leak, redundant trains of safety-related equipment could be disabled through one or more of the following:
a.
flooding in a particular safety-related pump room could disable redundant safety-related equipment in an adjacent pump room, b.
flooding in the CRD/ condensate pump room (Rooms R-9/R-10) could cause simul-taneous loss of HPCS and RHR B systems, and c.
flooding in any pump room due to a leak in suction piping from the suppres-sion pool could result in lowering of the suppression pool water level to a point where suction to redundant ECCS piping systems is lost.
APPROACH TO RESOLUTION The 8-H doors as designed and manufactured are acceptable for watertightness as applied to the hinge side of the door (pushes door into gasket).
Based on this acceptability, the Project nas decidea to have 5 additional doors and frames manufactured. The 5 doors to be manufactured, designated R6a, R7a, R9a, R10a, and R11a, are counterpart doors and are installed on the opposite side of the opening to doors R6, R7, R9, R10, and Ril. This will provide double doors, so that in the event of flooding, the door will be pushed into the gasket providing a water tight seal. The door will be pushed into the gasket providing a water tight seal. The new doors are identical to the counterpart doors with the excep-tion that key operated auxiliary locks will not be provided, and the hinge will be on the opposite side from its counterpart (left hand vice right hand).
CURRENT STATUS The A/E has issued a Project Engineering Directive (PED) to have the 5 new doors manufactured.
It is anticipated that the doors will be manufactured, tested, shipped and installed in their required locations by February 28, 1983.