ML20082J508
| ML20082J508 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 03/31/1995 |
| From: | Maynard O WOLF CREEK NUCLEAR OPERATING CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| WO-95-0069, WO-95-69, NUDOCS 9504180268 | |
| Download: ML20082J508 (7) | |
Text
- _. _.
I LFCREEK Wf) NUCLEAR OPERATING Otto L. Maynard Vce President Plant Operations April 14, 1995 WO 95-0069 U.
S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-137 Washington, D.
C.
20555
Subject:
Docket No. 50-482:
March, 1995, Monthly Operating Report Gentlemen:
Attached is the March, 1995, Monthly Operating Report for Wolf Creek Generating Station.
This submittal is being made in accordance with the requirements of Technical Specification 6.9.1.8.
Very truly yours, l l hf Otto L. Maynard OLM/jad Attachment cc:
L.
J.
Callan (NRC), w/a D.
F.
Kirsch (NRC), w/a J.
F.
Ringwald (NRC), w/a J.
C.
Stone (NRC), w/a b b b N I.)
9504180268 950331
'l L
PDR ADOCK 05000482 PO Box 411/ Durhngton, KS 66839 / Phone: (316) 364-8831
.h R
PDR An Equal Opportunsty Ernployer M. F/HC/ VET i
Attachtbent to. WO 95-0069 r
.i WOLF CREEK NUCLEAR' OPERATING CORPORATION t
i i
.. WOLF CREEK GENERATING STATION' MONTHLY OPERATING REPORT
' 5 i
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March.
L YEAR :,.
1995-MONTH:
Docket No.:
50-482'
. Facility Operating. License No.:
NPF-42 i.-
I Report'No.
121 l
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=
c,.
l Attachm:nt to WO 95-0069 i
SUMMARY
Tha following report highlights the operating experience of Wolf Creek Generating Statio.1 for the month of March, 1995.
This report is being provided pursuant to Technical j
Specification 6.9.1.8.
I.
SUMMARY
OF OPERATING EXPEP.IENCE Tha unit operated at or near 100% in Mode 1 from March 1 t.d ough March 8.
'At 1445, March 8, 1995, Wolf Cree.t experienced a reactor trip due to a faalty Reactor Trip Manual Actuation Switch.
While the unit was shut down, on March 10, 150%.
the Solid State Protection System (SSPS) for both "A"
and "B"
trains was mod.Lfied in response to an industry concern, and to enhance system reliability.
On March 11,
^N, retorquing i
cctivities were completed to stop a minor leak on the Excess Let6ovo Het'
- echanger.
At 0412 on March 12,
- 1995, AE V322 encapsulation (which was /cund haking during containment inspection) was successfully repaired.
The plant was main
.ned in Mode 3 i
l until entering Mode 2 at 0902 on March 12, 1995, with the reactor 3critu al.
The plant was returned to Mode 3 at 2153 to resolve the discrepancy in the ECC and ectual critical conditions.
The plant entered Mode 2 at 0529, March 13, 1995, and entered Mode 1,
at 0947, March 13, 1995.
On March 14, 1995, at 0541, the unit was synchronized to the grid.
Due to problems with a power sensing relay in the EHC cabinet which prevented switching the EHC control power from House Power to the PMG power, the generator output breakers were reopened at 1703, and at 1713, the main turbine was manually tripped to l
allow repairs.
The unit remained at approximately seven (7) percent reactor power while repairs were made.
The Turbine was then synchronized to the grid at 2230 and power was increased.
The plant reached 100% power at 2140, March 16, 1995.
On March 18, at 0046, the plant commenced power reduction to 35% for retest of STS AC-001.
The purpose of the power reduction to 35% was because when surveil'.ance STS AC-001 was performed March 15, 1995, a problem while stroking CIV 3 was noted.
The valve had closed properly, but the plcnt had an unexplained response from CIV 1 along with CIV 3.
The surveillance was completed satisfactorily and power was increased.
Power was returned to 100% at 2328, cnd rod control was placed in automatic at 2330, March 18, 1995.
The plant remains at Mode 1, and approximately 100%.
MAJOR SAFETY RELATED MAINTENANCE ACTIVITIES 1
l Rtpnir of encapsulation on AE V322 Ratorqued Excess Letdown Heat Exchanger Chr.nged Solid State Protestion System fuses on Train "A" i
l Wolf Creek Generating Station Monthly Operating Report March, 1995 i
Page 1 of 5
Attcchment to WO 95-0069 OPERATING DATA REPORT DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 04-04-95 TELEPHONE 316-364-8831 OPERATING STATUS 1.
Reporting Period:
March, 1995 Gross Hours in Reporting Period:
744 2.
Currently Authorized Power Level (MWt) : -3565 Max. Depend. Capacity (MWe-N(.) : 1160 Design Electrical Rating (MWe-Net).
1170 3.
Power Level to Which kestricted (If Any) (MWe-Net) :
N/A 4.
Reasons for Restriction (If Any) : N/A This Month Yr. to Date Cumulative 5.
Number of Hours Reactor was Critical 632.7 2048.7 68,016.8 6.
Reactor Reserve Shutdown Hours 0.0 0.0 339.8 7.
Hours Generator on Line 609.1 2,025.1 67,179.7 8.
Unit Reserve Shutdown Hours 0.0 0.0 0.0 9.
Gross Thermal Energy Generated (MWh) 2,020,996 7,044,399 222,076,717 10.
Gross Electrical Energy Generated (MWh) 697,713 2,443,142 77,207,357 11.
Net Electrical Energy Generated (MWh) 663,178 2,341,409 73,716,083 12.
Reactor Service Factor 85.0%
94.8%
81.0%
13.
Reactor Availability Factor 85.0%
94.8%
81.4%
14.
Unit Service Factor 81.9%
93.8%
80.0%
15.
Unit Availability Factor 81.9%
93.8%
80.0%
16.
Unit Capacity Factor (Using MDC) 76.8%
93.4%
77.5%
17.
Unit Capacity Factor (Using Design MWe) 76.2 92.6%
75.1%
18.
Unit Forced Outage Rate 18.1%
6.2%
5.2%
19.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each):
j No outages are scheduled at this time.
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20.
If Shut Down at End of Report Period, Estimate Date of Startup:
N/A I
Wolf Creek Generating Station Monthly Operating Report March, 1995 Page 2 of 5
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l Att chm:nt to WO 95-0069 AVERAGE DAILY UNIT POWER LEVEL l
DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 04-04-95 l-TELEPHONE 316-364-8831 MONTH March, 1995 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1 1185 17 1174 2
1179 18 694 3
1187 19 1175 4
1186 20 1178 5
1186 21 1176 l
6 1185 22 1175 7
1185 23 1169 8
717 24 1176 9
0 25 1176 l
10 0
26 1176 11 0
27 1178 12 0
28 1181 13 0
29 1182 14 85 30 1175 15 593 31 1182 16 977 l
Wolf Creek Generating Station Monthly Operating Report March, 1995 Page 3 of 5
Attachment to WO 95-0069 t
l UNIT SHUTDOWN AND POWER REDUCTIONS DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 04-04-95 t
TELEPHONE 316-36_4-8831 i
Type METHOD OF SHUTTING i
F: FORCED DURATION REASON DOWN THE REACTOR CORRECTIVE ACTIONS / COMMENTS t
No Date S: SCHEDULED (Hours)
(1)
OR REDUCING POWER (2)
- i 1
3/8/95 F
134.9 A
3 Reactor trip. during testing due to faulty Reactor Trip Manual Actuator Switch.
Corrective actions include the revision of the testing procedures and. establishment of appropriate administrative controls.
2 3/18/95 S
5 B
1 Retest of STS AC-001; power reduced from 100% to 35%.
SUnenRY:
The unit operated at or near 100% in Mode i from March 1 through March B.
At 1445, March 8, 1995, Wolf Creek experienced a reactor trip due f
to a faulty Reactor Trip Manual Actuation Switch. While the unit was shut down, on March 10, 1995, the Solid State Protection System (SSPS)
I for both
- A*
and
- B" trains was modified in response to an industry concern, and to enhance system reliability.
On March 11, 1995, retorquing activities were completed to stop a minor leak on the Excess Letdown Heat Exchanger.
At 0412 on March 12, 1995, AE V322-encapsulation (which was found leaking during containment inspection) was successfully repaired. The plant was maintained in Mode 3 until entering Mode 2 at 0902 on March 12, 1995, with the reactor critical. The plant was returned to Mode 3 at 2153 to resolve the discrepancy in the ECC and actual critical conditions. The plant entered Mode 2 at 0529, March 13, 1995, and entered Mode 1, at 0947, March 13, 1995. On March 14, 1995, at 0541, the unit was synchronized to the grid.
Due to problems with a power sensing relay in the EHC cabinet which prevented switching the EHC control power from House Power to the Pm power, the generator output breakers were reopened at 1703, and at 1713, the main turbine was manually tripped to allow repairs.
The. unit remained at approximately seven (7) percent reactor power while repairs were made.
The Turbine was then synchronized to the grid at 2230 and power was increased. The plant reached 100% power at 2140, March 16, 1995.
On March 18, at 0046, the plant commenced power reduction to 35% for retest of STS AC-001.
The purpose of the power reduction to 35% was because when surveillance STS AC-001 was performed March 15, 1995,- a problem while stroking CIV 3 was noted. The valve had closed properly, but the plant had an unexplained response from CIV 1 along with CIV 3.-
The, surveillance was completed satisfactorily and power was increased. Power was returned to 100% at 2328, and rod control was placed in automatic at 2330, March 18, 1995.
The plant remains at Mode 1, and approximately 100%.
t
- 1) REASON: A: EQUIPMENT FAILURE (EXPLAIN)
E: OPERATOR TRAINING AND LICENSE EXAMINATION (2) METHOD:
- 1. MANUAL B: MAINTENANCE OR TEST F: ADMINISTRATIVE
- 2. MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN)
- 3. AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN)
- 4. CONTINUED
- 5. REDUCED LOAD
- 9. OTHER I
Wolf Creek Generating Station Monthly Operating Report i
March, 1995 Page 4 of 5 L
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Attr; chm' ant to WO 95-0069 l
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l WOLF CREEK NUCLEAR OPERATING C3RPORATION l
WOLF CREEK GENERATING STATION l
UNIT NO. 1 MONTH March, 1995
SUMMARY
OF OPERATING EXPERIENCE Listed below in chronological sequence is a summary of operating experiences for this month'which required load reduction or resulted in significant non-load related incidents.
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DATE TIME EVENT 3/8/95 1445 Reactor trip I
l 3/18/95 0046 Power reduction for retest of STS AC-001 l
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Wolf Creek Generating Station Monthly Operating Report March, 1995 Page 5 of 5