ML19269D133
| ML19269D133 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 02/21/1979 |
| From: | Autio H YANKEE ATOMIC ELECTRIC CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-50-29-79-06, RO-50-29-79-6, NUDOCS 7902270368 | |
| Download: ML19269D133 (2) | |
Text
.
+
YAl/ NEE ATOMIC ELECTRIC 00MPAllY e- - -
Ya_f:e?,$
Rowe, Massachusetts 01367 uxass February 21, 1979 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pa 19406 Attention: Mr. B. H. Grier
Dear Mr. Grier:
Pursuant to the requirements of Technical Specifications, Section 6.9.6.g, the following is reported as Reportable Occurrence 50-29/
79-06.
During normal operation, at 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br /> on February 19, 1979, the fire pump auto start and alarm was received in the control room.
It was determined that a fire condition did not exist in the plant and the auto start was the result of a leak in the fire suppression water system. A leak isolation process revealed that the leak was in the line between valves FS-V-641, FS-V-642 and FS-V-647. These valves were closed and remained closed which isolates yard hydrant No.15 and one of the two redundant lines which :.ipply the turbine building fire suppression water. Equipment was arranged to provide fire suppression coverage to the areas of the plant normally pro-tected from the isolated hydrant. Hose and fittings are also available to supply water to hydrant No. 15 from another yard hydrant.
At this time excavation in the area of the leak has begun, so the cause of the leak and the appropriate corrective actions have not been determined. A more detailed report will be submitted within two weeks.
Very truly yours, lq Herbert A. Autio Plant Superintendent EDI/aed i
cc:
(2) Director, Office of Management Information G Progra,1 Control Y
U. S. Nuclear Regulatory Commission n
Washington, D.C.
20555 V
(1) Manager of Operation, Yankee Atomic Electric Co.
790227o368
United States Nuclear Regulatory Comission Page 2 February 21, 1979 (1) NSARC Chaiman (1) Manager of Operational Quality Assurance, Yankee Atomic Electric Company RT: 17-R-04-013 DG: D-$6-$1-01 DE: H-09-$6-ll 4
.