Text

Monthly Operating Repts for Nov 1987
	ML20237A137
Person / Time
Site:	Point Beach
Issue date:	11/30/1987
From:	Fay C, Krause C; WISCONSIN ELECTRIC POWER CO.
To:	; NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
	CON-NRC-87-124 VPNPD-87-527, NUDOCS 8712140285
	Download: ML20237A137 (9)
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NARRATIVE
SUMMARY
OF OPERATING EXPERIENCE Docket No.
50-266 Unit Name Point Beach Unit 1 Date December 7, 1987 Completed By C. W. Krause Telephone 414/221-2001 l
l Unit 1 operated at approximately 498 MWe net throughout the l
period except for a reactor trip.
On November 21, at 3:06 a.m.,
a low pressure reactor trip occurred followed by a safety injection system actuation which injected boric acid storage tank water into the reactor coolant system for 10 minutes until the pressurizer went solid and pressure was restored to normal.
An unusual event was declared at 3:31 a.m.
It was determined that one spray valve, PCV-431, had failed full open causing the l
transient.
The unusual event was terminated at 4:57 a.m. after all plant conditions had stabilized and the cause of the transient was verified.
The spray valve was repaired and the unit was placed back into service shortly after midnight on November 22, 1987.
LER 87-005 is being written to document the event.
Shortly after midnight on November 6, 1987, an unusual event was declared and deescalated when low flying helicopters passed over the plant property.
It was later learned that these helicopters were Army aircraft on a training mission.
Safety-related maintenance included the rebuilding of auxiliary feed valve AF-4020 operator, retubing the component cooling heat exchanger HX-12A, and repairing the "A" reactor trip breaker.
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i 6-l NARRATIVE
SUMMARY
OF dPERATING EXPERIENCE' L
-Docket lNo.
'50 301 q
' Unit Name
' Point-Beach Unit 2 j
Date December 7, 1987 4
Completed By C.'W.'Krause Telephone 414/221-2001
H Unit 2 was phased to-the line at 1:22 p.m. on November 19, 1987.
LThis ended the unit'sLthirteenth refueling and maintenance outage.
The unit operated for a few days atilow power for fuel' conditioning and. secondary water chemistry. clean up.
On November 20, with the reactor at about 52% power, a fuse in l-the rod control system blew and control rod C7 slipped part way J
into the core while the bank was being withdrawn.
The fuse was
' replaced and an attempt was.made to withdraw C7 to its proper position..As this w&s done, a second fuse associated with the.C7 moveable. lift coil blew and C7: dropped in the rest of the way resulting in a turbine-runback.
The moveable lift coil was tested for-problems and none was found.
The second fuse was replaced and C7 was. withdrawn to=its required position by 1247. hours.
A red phone report was made concerning the incident.
On November 23 at 0832 hours0.00963 days 0.231 hours 0.00138 weeks 3.16576e-4 months the unit. reached. full power.
LER 87-005 is being written to document the. event.
Safety-related maintenance includes repairing the auxiliary feed pump 2P29 bearings.
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231 W. MICHIG AN, P.O tlOX 2046. MILWAUKEE.WI S3201 H14) 2212345 VPNPD-87-527 NRC-87-124 December 9, 1987 4
U.
S. NUCLEAR REGULATORY COMMISSION Document Control Desk Washington, D.
C.
20555 j
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 month of November 1987.
Very truly yours, h$
C. W.
ay Vice President Nuclear Power
/
Attachments Copies to R.
S.
Cullen, PSCW NRC Regional Administrator, Region III NRC Resident Inspector d
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ML20237A137

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ML20237A137

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