ML20137Y406
| ML20137Y406 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 02/24/1986 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| (2-SR-86-005), (2-SR-86-5), ANPP-35285-EEVB, NUDOCS 8603120265 | |
| Download: ML20137Y406 (2) | |
Text
3 Arizona Nuclear Power Project P O. box $2034 e PHOENIX. ARIZONA 85072 2034 February 24, 1986 ANPP-35285-EEVB/KLM/98.05 Mr. John B. Martin, Regional Administrator Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region V 5
3 1450 Maria Lane, Suite 210 Walnut Creek, CA 94596-5638 3
4
Subject:
Palo Verde Nuclear Generating Station (PVNGS) g p Q t,,
82 2 '
Unit 2 9
-4 Docket No. STN 50-529 (License NPF-46) 2 E
Special Report - Radiation Monitoring Unit
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Not Restored Within 72 Hours File: 86-020-404 G.1.01.10 l> ear Mr. hartin:
Attached please find a Special Report (2-SR-86-005) prepared and submitted pursuant to Technical Specification 3.3.3.9 and 6.9.2.
This report discusses inoperability of a Plant Vent High Range Radiation Monitor.
11 you have any questions, please contact me.
Very truly yours, c-CQt n LLL i m E. E. Van Brunt, Jr.
Executive Vice President Project Director EEVB/KLH/dlm Attachment cc:
R. P. Zimmerman (all w/a)
A. L. Hon E. A. Licitra A. C. Gehr INPO Records Ccenter 9603120265 960224 ADOCK 0 % 5 9 DR DR C
24,
- AtilcbmsnttoANPP-35285 PALO VERDE NUCLEAR GENERATING STATION UNIT 2 Special Report No. 2-SR-86-005 RADIATION MONITORING UNIT NOT RESMRED WITHIN 72 HOURS Docket No. STN-50-529 License No. NPF-46 At 0645 on January 25, 1986, the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Technical Specification ACTION Statement for operability of the Plant Vent High Range Radiation Monitor (RU-144) was exceeded.
We monitor was declared inoperable on January 22, 1986, as a result of the Plant Vent Low Range Radiation Monitor (RU-143) bring declared inoperable due to a failure of the counting functions.
We cause of the counting functions inoperability was the result of energizing a reactor coolant pump with the grounding straps still attached.
We resultant surge on the ground system caused a
detector and amplifier /descriminator board failure in RU-143.
We corrective action taken was the repair and calibration of RU-143, he monitoring unit was returned to service on February 10, 1986.
In addition, procedural changes are being made to prevent energizing a reactor coolant pump with the grounding straps attached.
A special report is required and made pursuant to Palo Verde Unit 2 Technical Specification Table 3.3-13 ACTION 42-b and Technical Specification 6.9.2.
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