ML17299A857
| ML17299A857 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/02/1985 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 1-SR-85-030, 1-SR-85-30, ANPP-34141-EEVB, NUDOCS 8512100153 | |
| Download: ML17299A857 (4) | |
Text
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RFCP.
Arizona Nuclear Power Project C
P.o. BOX 52034 4
PHOENIX. ARIZONA85072-2034
/ +$ 6)
December 2,
N9A5'NPP 34141 RlhWiICV Mr. John B. Martin, Regional Administrator Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region V
1450 Maria Lane, Suite 210 Malnut Creek, CA 94596-5368
Subject:
Palo Verde Nuclear Genera'ting Station (PVNGS)
Unit 1
Docket No.
STN 50-528, License No. NPF-41 Special Report Inoperability of Containment High Range Radiation Monitor (RU-149)
File: 85-020-404
Dear Mr. Martin:
Attached please find a'pecial Report (1-SR-85-030) prepared and submitted pursuant to Technical Specificati'on Table 3.3-6, ACTION 27 (Radiation Monitoring Instrumentation) and Technical Specification 6.9.2.
This report discusses exceeding the 72-hour ACTION statement for the operability of the Containment High Range Radiation Monitor (RU-149).
If you have any questions, please contact me.
EEVB/GEC/rw Attachments Very truly yours, ceo' E. E.
Van Brunt, Jr.
Executive Vice President Project Director cc:
R. P.
Zimmerman (all w/a)
A. L. Hon E. A. Licitra A. C. Gehr INFO Records Center BSi21001S3 85i202 PDR ADQCK 05000S28 8
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Attachment to ANPP-34141 PALO VERDE NUCLEAR GENERATING STATION UNIT 1 INOPERABILITY OF CONTAINMENT HIGH RANGE MONITOR (RU'-149)
Docket No.
STN 50-528 License No. NPF-41 Special Report No. 1-SR-85-030 This Special Report is required by Palo Verde Unit 1 Technical Specification 3.3.3.1, Table 3.3-6, ACTION 27-3.
On October 28,
- 1985, Palo Verde Unit 1 was in Mode 3 at 565 degrees F and 2250 psia when the Containment High Range Radiation Monitor, RU-149, was inoperable for more than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
This monitor was declared
.inoperable due to spurious high radiation alarms coincident with spurious detector failure alarms.
Emergency Plan Implementing Procedure 14A is applicable, which allows the use of external detectors RU-158B and RU-158C,. or RU-37 and RU-38, when a containment high range monitor is inoperable.
A work authorizing document has been issued to troubleshoot the cause of the alarms and to rework the radiation monitor as appropriate.
The monitor was returned to operable status prior to December 1, 1985.
An additional report is forecast for submittal by December 30, 1985.
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