ML20214P876
| ML20214P876 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/19/1986 |
| From: | Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 2-SR-86-036, 2-SR-86-36, ANPP-00118-JGH, ANPP-118-JGH, NUDOCS 8612040407 | |
| Download: ML20214P876 (3) | |
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1: r. :i Arizona Nuclear Power Project P.O. BOX 52034
- PHOENIX, ARIZONA 85072-2034 l,0g,
ad D og ANPP-00118-JGH/TDS/ ESP-96.03 November 19, 1986 t;EGIDH t'l;;;
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 2 Docket No. STN 50-529 (License NPF-51)
Special Report 2-SR-86-036 File: 86-020-404
Dear Mr. Martin:
Attached please find a Special Report 2-SR-86-036 prepared and submitted pursuant to Technical Specifications 3.3.6 and 6.9.2.
This report discusses a radiation monitoring unit not restored to operable within 72. hours.
If you have any questions, please contact Tom Bradish, Compliance Supervisor at (602) 932-5300, Ext. 6936.
Very truly yours, QN2 J. G. Haynes Vice President Nuclear Production JGil/TDS/ ESP /cid Attachment cc:
- 0. M. DeMichele (all w/a)
E. E. Van Brunt, Jr.
R. P. Zimmerman R. C. Sorenson E. A. Licitra A. C. Gehr INPO Records Center
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~J. R. Bynum:
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.0. JJ Zeringue.
J. M.' Allen R.~ E. Younger R. J. Adney:
R. lE. Gouge.
M. L. Clyde
- 14. E..Ide D. N. Stover -(NSG)'
J. R. LoCicero (ISEG)
M. K.;Hartsig.
D. R. Canady UIES Coordinator B..F. Asher- (Training)
PRO File-2-86-0157 Responsible; Departments (required review):
Operation's Engineering-(T. Phillips)
Operations Engineering (G. Voboril)
Operations Engineering (L. Henson)
Radiation Protection Chemistry Manager (L. Brown)
Radiological Services Manager.(G. Perkins) r-t'
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- PALO VERDE NUCLEAR GENERATING STATION.
.Special Report 2-SR-86-036..
- RADIATION MONI'IORING UNIT NOT RESTORED WITHIN 72 H0bRS-Docket No..STN 50-529' License No. ~NPF-51
'This special, report is required by.Palo Verde Unit 2 Technical Specification Table 3.3-6, Action-27.
U
- At 14'00 on October'31,.1986, Palo' Verde Unit 2 was in. Mode 1,(POWER OPERATION) at 100 percent reactor power, when_the Containment Building Atmosphere-Monitor (RU-1) 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,i hich samples radioactive.
w gaseous effluents in the. containment building was initially ' declared inoperable on
' October 28, 1986.
~
. As~ required by' Technical-Specification Table 3.3-6, Action 27, the movable' a' r monitor i
was placed in service. Since this monitor covers the same range as RU-1 and showed no abnormal radiation levels -during -this' time, no threat to the health and safety
- of-the public. existed.
During the quarterly preventative maintenance work on RU-1, a cracked 'dri0e belt on the monitor. pump was detected ~..As a prudent action,.RU-l'was_ declared inoperable
- to offeet ' replacement-of the belt '.rather then wait; for a failure. to occur. A work order.was issued and a qualified belt was obtained from the vendor for replacement.
--The monitor was returned to operable status at 1431.on October 31, 1986,-31 minutes af ter the:72 hour period was exceeded.
An engineering analysis has attributed the cracking of the belt to normal component -
' aging. Since the regularly scheduled preventive -maintenance detected the problem prior to failure, no changes to the schedule are currently planned.