ML20055F673
| ML20055F673 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 05/31/1990 |
| From: | Mike Williams WOLF CREEK NUCLEAR OPERATING CORP. |
| To: | |
| Shared Package | |
| ML20055F668 | List: |
| References | |
| NUDOCS 9007190003 | |
| Download: ML20055F673 (4) | |
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1 Attachiment 2 to NO 90-0204 r
Revised Pages to May, 1990 l
Monthly Operating Report J
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9007190003 900713 PDR ADOCK 05000482 R
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_. _ - 1 to NO 90-0204 StMGRY The f i lowing t w i. highlights the operating experience of Wolf Creek Generating Station for the nonth of May,1990. 'Ihis report is being prwided pursuant to 'Dochnical Specification 6.9.1.8.
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StM mRY OF OPERATIlG EKPERIENCE The unit ocupleted its fourth refueling outage in May. '1he unit began the nonth in Mode 5, Cold shutdown; entered 2de 4, Hot Shutdown, cri May 7 at 1706 hours0.0197 days <br />0.474 hours <br />0.00282 weeks <br />6.49133e-4 months <br />; entered Mode 3, Hot Standby, on May 9 at 1510 hours0.0175 days <br />0.419 hours <br />0.0025 weeks <br />5.74555e-4 months <br />; and entered Mode 2, Startup, on May 12 at 1702 hours0.0197 days <br />0.473 hours <br />0.00281 weeks <br />6.47611e-4 months <br />. Ch May 13 at 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br /> the i
reactor beoane critical and on May 14 at 1222 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.64971e-4 months <br /> entered Mode 1, Power Operation. The generator was synchronized to the grid for approximately three hours at 1746 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.64353e-4 months <br /> on May 14 in preparation for a turbine overspeed trip test. Following the test a reactor trip occurred at 2137 hours0.0247 days <br />0.594 hours <br />0.00353 weeks <br />8.131285e-4 months <br /> due to low level in Steam Generator "C" caused by lower than nonnal feedwater tanparatures. She unit was restarted fran Mode 3 and synchronized to the grid at 0017 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br /> on May 16. 'Ihis marked the and of the refueling outage which lasted 67 days, 23 hours2.662037e-4 days <br />0.00639 hours <br />3.80291e-5 weeks <br />8.7515e-6 months <br />, and 50 minutes.
On May 17 at 1725 hours0.02 days <br />0.479 hours <br />0.00285 weeks <br />6.563625e-4 months <br /> with the unit at 92% power, a leak was discovarod on the seal water return line for Main FWedwater Pung "A".
A power reduction was initiated and the unit entered E de 2 at 2152 hours0.0249 days <br />0.598 hours <br />0.00356 weeks <br />8.18836e-4 months <br />. At 2305 hours0.0267 days <br />0.64 hours <br />0.00381 weeks <br />8.770525e-4 months <br /> a reactor trip occurred due to low level in Steam Generator "C" caused by its l.
atmospheric relief valve failing open. She leaking seal water return line and atmospheric relief valve were repaired and the unit was restarted and synchronized to the grid at 1920 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.3056e-4 months <br /> on May 18.
i Ch May 19 at 2353 hours0.0272 days <br />0.654 hours <br />0.00389 weeks <br />8.953165e-4 months <br />, with the unit at 984 power, a high level in j
Moisture Separator Drain ' Dank "A" caused a turbine trip which then caused a reactor trip. '1he high drain tank level was caused by a failed check valve on a line that controls tank level. '1he valve was repaired and the unit was restarted and synchronized to the grid at 0025 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> on May 21. The unit reached 100% power at 1830 hours0.0212 days <br />0.508 hours <br />0.00303 weeks <br />6.96315e-4 months <br /> on May 22 and remained at or near 1004 power for the renainder of the sonth.
F II. MAKR SAITIT RELATED MAINITNANL.E JCTIVITIES 1.
"A" Train Essential Service Water flow balance.
2.
Containment hAup=i analyzer nodification to inprove reliability.
l 3.
Main Steam Isolation Valve testing.
Wolf Creek Generating Station Monthly Operating Report l
May 1990 Pap l of 6
L UNIT SHUTDOWN AND POWER REDUCTIONS DOCKET NO.
50-482 180LF ram GENERATING STATION 3
180LF CBM NUCLEAR OPERATING CORPORATION e
DATE 06-0T.-90 N^
COMPLETED BT M. Wi;.liams 3f REPORT MONTII Mar. 1990 TELEPHONE 316-364-8831 TYPE METHODS SHUTTING U
F:. FORCED DURATION REASON DOWN THE REACTOR CORRECTIVII ACTIONS /COE9ENTS e
No Date S: SCHEDULED (HOURS)
(1)
OR REDUCING POWER (2)
O z
O 4
900501 S
329.8 C
4 Continued scheduled refueling outage.
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5 900514 S
0.2 B
1 Performance of Main Turbine Overspeed Test.
lO 6
900514 F
22.2 G
3 Reactor trip due to steam generator low level caused by lo, low feedwater temperature.
(Licensee Event Report 90-011-00, due June 13, 1990.)
7 900515 S
0.7 B
1 Performance of Main Turbine Overspeed Test.
8 900517 F
21.6 A
1/3 Menual shutdown from 92I due to feedwater pump seal line leak: reactor trip from OZ due to steam generator low level.
(Licensee Event Report 90-012-00, due June 16, 1990.)
9 900519 F
24.5 A
3 Reactor trip due to high water level in Moisture Separator Drain Tank.
(Licenace Event Report 90-013-00, due June 18, 1990.)
SWWWhRY: The unit completed its fourth refueling outage on May 15, 1990. Three reactor trips occurred: one near the end of the outage due to operational error and two shortly afterwards due to minor equipment problems. Following these events the unit operated at or near 100Z for the remainder of the conth.
- 1) REASON: A: EQUIPMENT FAILURE (EKPLAIN) E: OPERATOR TRAINING AND LICENSE EKAMINATION (2) METHOD:
1.
MANCAL B: MAINTENANCE OR TEST F: ADMINISTRATIVE 2.
MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3.
AUTOMATIC SCRAM D: REGULATORT RESTRICTION B: OTHER (EKPIAIN) 4.
CONTINUED 5.
REDUCED LOAD 9.
OTHER t
Wolf Creek Generating Station Monthly Operating Report May 1990 Page 4 of 6
c Attachtnt 11 to NO 90-0204 1
ICLP CREEK MKLEAR OP5WTDG 0300ETICE EXE CREEK GENERATDG S'IATICH 4
INIT IG.1 MRtH May. 1990 SlDMARY OF OPERATDG EXPERIENCE Listed below in chronological sequence is a sunmary of operating experiences for this nonth whidt required load reduction or resulted in significant non-load related incidents.
DME
.TDS EVENT May 1, 1990 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> Unit in Mode 5 - Cold shutdown. Continuing Refueling Outage activities.
i Hay 7, 1990 1706 hours0.0197 days <br />0.474 hours <br />0.00282 weeks <br />6.49133e-4 months <br /> Entered Mode 4 - Hot Shutdown.
May 9, 1990 1510 hours0.0175 days <br />0.419 hours <br />0.0025 weeks <br />5.74555e-4 months <br /> Entered Mode 3 - Hot Standby.
May 12, 1990 1702 hours0.0197 days <br />0.473 hours <br />0.00281 weeks <br />6.47611e-4 months <br /> Entered Mode 2 - Startup.
May 13, 1990 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br /> Reactor critical.
May 14, 1990 1222 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.64971e-4 months <br /> Entered Mode 1 - Power Operation.
2137 hours0.0247 days <br />0.594 hours <br />0.00353 weeks <br />8.131285e-4 months <br /> Reactor trip - low level Steam Generator "C".
May 15, 1990 1302 hours0.0151 days <br />0.362 hours <br />0.00215 weeks <br />4.95411e-4 months <br /> Entered Mode 2 - Startup.
1419 hours0.0164 days <br />0.394 hours <br />0.00235 weeks <br />5.399295e-4 months <br /> Reactor critical.
l 1422 hours0.0165 days <br />0.395 hours <br />0.00235 weeks <br />5.41071e-4 months <br /> Entered Mode 1 - Power Operation.
May 16, 1990 0017 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br /> Generator synchrmized to the grid. Refueling outage emplete.
May 17, 1990 1725 hours0.02 days <br />0.479 hours <br />0.00285 weeks <br />6.563625e-4 months <br /> Began decreasing power from 92% due to a leak cm the seal water return line for Main Feedwater Punp "A".
2152 houts Entered Mode 2 - Startup.
i 2305 hours0.0267 days <br />0.64 hours <br />0.00381 weeks <br />8.770525e-4 months <br /> Reactor trip - low level Steam Generator "C".
May 18, 1990 1155 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.394775e-4 months <br /> Entered Mode 2 - Startup.
1235 hours0.0143 days <br />0.343 hours <br />0.00204 weeks <br />4.699175e-4 months <br /> Reactor critical.
1727 hours0.02 days <br />0.48 hours <br />0.00286 weeks <br />6.571235e-4 months <br /> Entered Mode 1 - Power Operation.
1920 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.3056e-4 months <br /> Generator synchronized to the grid.
Wolf Creek Generating Station lenthly Operating Repart May 1990 Page 5 of 6
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