ML20214P995
| ML20214P995 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/18/1986 |
| From: | Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 1-SR-86-097, 1-SR-86-97, ANPP-00119-JGH, ANPP-119-JGH, NUDOCS 8612040456 | |
| Download: ML20214P995 (3) | |
Text
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p wco Arizona Nuclear Power Project P.o. BOX 52034 e PHOENIX. ARIZONA 85072-2034 ANPP-00119-JGil/TDS/JEM-96.03 November 18, 1986 Mr. John B. Martin, Regional Administrator Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region V 1450 Maria Lane, Suite 210 Walnut Creek, CA 94596-5368
Subject:
Palo Verde Nuclear Generating Station Unit 1 Docket No. STN 50-528 (License NPF-41)
Special Report 1-SR-86-097 File: 86-020-404
Dear Mr. Martin:
Attached please find a Special Report 1-SR-86-097 prepared and submitted pursuant to Technical Specifications 3.3-13 and 6.9.2.
This report discusses the inoperability of the Fuel Building Radiation Monitor for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
If you have any questions, please contact Tom Bradish, Compliance Supervisor at (602) 932-5300, Ext. 6936.
Very trul yours,
/1/ 6 5
J. G. Ilaynes Vice President Nuclear Production JGil/TDS/JEM/cid Attachment cc:
O. M. DcMichele (all w/a)
E. E. Van Brunt, Jr.
R. P. Zimmerman R. C. Sorenson E. A. Licitra 4
A. C. Gehr
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8612040456 861118 PDR ADOCK 05000528 S
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Mr. John B. Martin Special Report 1-SR-86-097 ANPP-00119/JGH/TDS/JEM-96.03 Page 2 bec:
J. R. Bynum (all w/a)
O. J. Zeringue J. M. Allen R. E. Younger R. J. Adney R. E. Gouge M. L. Clyde
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W. E. Ide D. N. Stover (NSG)
J. R. LoCicero (ISEG)
M. K. Hartsig D. R. Canady LCTS Coordinator B. F. Asher (Training)
PRO File 1-86-0303 Responsible Departments (required review):
G. Voboril G. D. Perkins L. E. Brown F. T. Semper
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PALO VERDE NUCLEAR GENERATING STATION' Special Report 1-SR-86-097 RADIATION M0'NITORING UNIT NOT RESTORED WITHIN~72 HOURS L
Docket No.
STN 50-528 License No'.; NPF-41 This special report is required by Palo Verde Unit 1 Technical Specification
. Table 3.3-13, Action 42-B.
At 1130 MST on October 23, 1986, Palo Verde Unit I was in Mode 1 (POWER OPERATION) et 100 percent power, when the Fuel Building Ventilation System High Range Monitor (RU-146) had ' been inoperable for more than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The monitor was-initially declared inoperable on October 20, 1986 as.a result of the Fuel Building Ventilation System Low Range Monitor (RU-145) experiencing a microprocessor lockup (monitor'will not count).~ Since RU-145 supplies sample flow to RU-146, the malfunction of RU-145 caused.RU-146 to be declared inoperable.
The ' Pre-Planned. Alternate Sampling Program was initiated as an interim compensatory measure as. required by Technical Specification Table 3.3-13, Action 42-A.
This measure included the utilization of a portable area radiation monitor (RU-63).
Engineering and vendor personnel are continuing to troubleshoot RU-145, in accordance with approved work control documents, to determine the root cause of the microprocessor lockup. RU-145 and RU-146 are expected to be returned to service by the end of November-1986.
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