ML20053C072
| ML20053C072 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 05/19/1982 |
| From: | Nichols T SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8206010465 | |
| Download: ML20053C072 (2) | |
Text
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o SOUTH CAROLINA ELWitR'idf8CGAS COMPANY n y.m lA rost orrice d6x Vs4M..-
COLUMBI A, S. C. 29218 Af93519sNI : lE l
Mr. James P. O'Reilly, Director i
U. S. Nuclear Regulatory Cmmission Region II, Suite 3100 101 Marietta Street, N.W.
Atlanta, GA 30303
Subject:
Virgil C. Sumer Nuclear Station Docket No. 50/395
)
Final Report Water in Valve Operator NE File:
3.1051
Dear Mr. O'Reilly:
On March 5,1982, Mr. Virgil Brownlee of NRC Region II was notified of a potential significant deficiency on the subject " water found in valve operator 8886."
A review of the maintenance work request forms and the nonconformance notice showed that the valve was tagged out of service when the water was found in the valve operator. It is believed that the water resulted frca construction workers washing down the area with hoses.
If the valve operator was energized when the water leaked into the valve operator, the electrical fuse could have blown thus indicating a problm. The ster damge occured while the valve operator was deenergized arx1 taggal out. Electrical maintenance discovered the water problem in the process of performing a maintenance work request. The valve 8886 is in the Safety Injection Systs. This valve is closed durirg safety injection and cold leg recirculation, and opened for hot leg recirculation.
The valve operator was returned to working condition by changing contacts on the torque switch, replacing mter damaged parts, and meggering motor leads. The water proble with the valve operator is mainly associated with cable entry frcm the top of the box. The corrective action for the valve operator with tcp cable entry, was to drill a 1/8 to 1/4 inch weep hole in the bottom of the operator to allow water to leak out if water or misture gets into the operator housirg. The weep hole was drillal at the lowest point for cxxtplete drainage. There are space heaters inside the cperator to keep the operator dry.
All other Limitorque operators which could have a water problem were identified. An inspecticn for water problerrs was performed and none of the valves operators showed any water damage. In these valve operators with top cable entry, a weep hole was drilled in the bottcm of the operator.
Even though corrective action described above has been nade to Limitorque operators, Nuclear Engineering determined that the loss of the valve cperator is not reportable as a 10CFR50.55e. The damage occurred when the valve was out of service and was repaired prior to putting the g g g ek in service. This is considered a final report of this matter.
COPY 82 06 O lo%s nr.
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Mr. J. P. O'Reilly Page two May 19, 1982 Very truly yours, gc M4.
T. C. Nichols, Jr.
Senior Vice President Power Operations TB:'IO4:tdh cc-V. C. Sumter T. C. Nichols, Jr.
G. H. Fischer H. N. Cyrus H. T. Babb D. A. Nauman M. B.-Whitaker, Jr.
W. A. Williams, Jr.
O. S. Bradham R. B. Clary M. N. Browne A. R. Koon H. Radin O. W. Dixcn, Jr.
Site Q. A.
C. L. Ligon (NSRC)
G. J. Braddick J. L. Skolds J. B. Knotts, Jr.
B. A. Bursey I&E (Washington)
Doctment Management Branch
- (55e,21, LER only)
NPCF File
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