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Monthly Operating Rept for Jul 1987
	ML20237F696
Person / Time
Site:	Point Beach
Issue date:	07/31/1987
From:	Fay C, Krause C; WISCONSIN ELECTRIC POWER CO.
To:	; NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
	CON-NRC-87-79 VPNPD-87-347, NUDOCS 8708130131
	Download: ML20237F696 (9)
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NARRATIVE
SUMMARY
OF OPERATING EXPERIENCE Docket No.
50-266 Unit Name Point Beach Unit 1 Date August 10, 1987 Completed By C. W.
Krause Telephone 414/221-2001 Unit 1 operated at approximately 495'MWe net throughout the period with no trips and one maintenance-related outage.
On July 18, 1987, the unit was taken off line for 8.2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for a scheduled maintenance outage.
The purpose of the outage was to repair a leaky root valve on the lower level tap for steam generator level transmitter LT-472.
There were no other significant load reductions during the period.
On July 2, 1987, one of the two fuses in the "A" reactor trip breaker closing circuit blew after closing the breaker during testing.
A similar event had occurred for the other fuse on June 30 during protection system logic testing.
Because the fuses blew only after the closing coil was actuated and not after the shunt trip device was actuated, the reactor trip breakers were operable.
An inspection of the breakers was conducted in an effort to determine the cause of the blown fuses.
Minimal tolerances between stationary and moving parts of the closing housing were noted.
It was also noted that the closing coil stationary housing becomes slightly distorted when its mounting bolts are tightened.
The close tolerances and housing distortion problems were corrected by Maintenance and the breakers have been tested satisfactorily.
There was no other major safety-related maintenance performed during the period.
LER 84-006-00 was issued during the period.
The LER documents a Type B test failure that occurred on September 24, 1984 on the containment purge supply penetration.
Documentation of the failure was discovered during preparation of the report for the April 1987, Type A integrated leak rate test.
No other LERs were issued during the period.
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3.' -
NARRATIVE
SUMMARY
OF OPERATING EXPERIENCE i
_ Docket No.
50-301 Unit Name-Point Beach Unit'2 Date August 10,-1987 Completed By" ~ C.
W. Krause Telephone
'414/221-2001 Unit 2: operated at approximately 493 MWe net throughout the period.with no significant load reductions or' trips.
On July-2, 1987, the.."A" RHR pump was removed from' service.after i:
noting an. unusual noise during inservice. testing of the pump.
I Maintenance determined that the noise was coming from the I
recirculation line (flow noise) and not the pump.
The pump was inspected, tested, and determined to be operable and. returned to service later that day. 'There was.no other major safety-related 3
maintenance performed-during the period.
No LERs were issued'for Unit 2 during the period.
i 1
1 l
l l
a P'
'O O
Wisconsin Electnc vowen couem 231 W. MICHIG AN, P,0. BOX 2046. MILWAUKEE, W153201 (414)221-2345 VPNPD-87-347-NRC-87-79 August 10, 1987.
U.
S. NUCLEAR REGULATORY COMMISSION Document Control Desk Washington, D. C.
20555 Gentlemen:
DOCKETS 50-266 AND 50-301 MONTHLY OPERATING REPORTS POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 Attached are monthly operating reports for Units 1 and 2, Point Beach Nuclear Plant, for the calendar.7onth of July 1987.
Very truly yours, h
ikd y' C. W.
Fay Vice President Nuclear Power Attachments Copies to R. S. Cullen, PSCW NRC Regional Administrator, Region III l
NRC Resident Inspector

ML20237F696

Text

SUMMARY

SUMMARY

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