ML20032E365
| ML20032E365 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 11/09/1981 |
| From: | Rodriquez R SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| Shared Package | |
| ML20032E366 | List: |
| References | |
| NUDOCS 8111200469 | |
| Download: ML20032E365 (1) | |
Text
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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street. Box 15830, Sacramento, California RJR 81-606 November 9',
198.1-
-DIRECTOR
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I 0FFICE OF INSPr* TION AND ENFORCEMENT E_
NOV19 tgate tg' U S NUCLEAR REC,m TORY COMMISSION
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WASHINGTON DC 20555 v
OPERATING PLANT STATUS REPORT DOCKET NO. 50-312 Enclosed is the October Operating Plant Status Report for Rancho Seco Unit One.
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R. J. Rodriguez Manager Nuclear Operations Enclosure cc:
it,E Washington (9)
Region V MIPC (2)
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$5A9880Toyfffgy V'
PDk AN ELECTRIC SYSTEM S E RVIN G tt 0 R E THAN G 0 C,0 0 0 IN THE HEART OF
.C A t t F O R N I A
SUMMARY
OF PLANT OPERATIONS 10/1 to 10/10 Continued plant shutdown due to damaged L.P. turbine.
10/11 1600 Began draining RCS to maintenance level for gasket replacement on OTSG's manways.
10/16 Completed work on OTSG's.
0100 Commenced refilling RCS.
2230 Completed RCS fill and venting.
24 0040 Reactor in heat-up mode.
10/25 0632 Reactor in hot shutdown.
10/26 0146 Reactor cri tical.
0315 Balar.cing turbine.
10/27 0521 A1) vibration within specs.
Synchronized unit and closed OCB's.
Increasing power to 40%.
1330 Started decreasing reactor power to 15%.
1430 Opened OCB's.
1448 Tripper turbine for balance weight adj us tment.
10/28 1425 Started reactor power.fecrease in preparation for RB entry to inspect OTSG's.
1507 Reactor at 3% power.
1629 increas i ng reactor power.
1744 Rolling main turbine.
1933 Synchronized unit and closed OCB's.
2138 Reactor tripped (RCS high pressure due to a swing in feedwater).
10/29 0035 Reactor startup in progress.
0040 Reactor critical.
0130 Rolling main turbine.
0304 Synchronized unit and closed OCB's.
0320 incresing load to 45%.
0430 Reactor at 45% power.
d
SUMMARY
OF PLANT OPERATIONS (Continued) 10/29 1130 increasing load to 60% power.
1429 Oil leak on intercept valve.
1430 Started plant shutdown due to oil leak.
4 1431 Intercept valve closed (loss of EH)
J 1437 opened OCB's.
Tripped turbine and-shutdown.both EH oil pumps.
1742 Rolling main turbine.
1754 increasing reactor power.
i l
1840 Synchronized unit and closed OCB's.
10/30 increased reactor power to 75%.
10/31 Reactor power at 87% and holding.
t PERSONNEL CHANGES REQUIRING-REPORTING No persor.nel changes that require reporting in accordance with Technical Specification Figure 6.2-2 were made in October 1981.
SUMMARY
OF CHANGES IN ACCORDANCE WITH 10 CFR 50.59(b)
No changes in accordance with 10 CFR 50.59(b) were made during the month of October 1981.
MAJOR ITEMS OF SAFETY-RELATED MAINTENANCE 1.
Replaced fuel oil filter on "A" Diesel Generator.
2.
Conducted eddy current test of tubes in main condenser.
I 3
Adjusted packing for SFV-460:4, Reactor Building CCW Supply isolation Valve.
1 i
4.
Replaced 0-rings, adjusted lock-up velocity, tested and reinstalled snubber ISW-21025-6.
5 Reworked, tested, and installed snubbe-ISW-21006-6A.
6.
Rebuilt accumulator, replaced valve block and poppet stop plug of snubber SS-16.
7 Machined and installed new bearing retainer for NSCW pump motor.
8.
Tested rebuilt governor for "A" Diesel Generator per EM.191.
MAJOR ITEMS OF SAFETY-RELATED MAINTENANCE (Continued) 9 lnstulled new coupling on "B" Boric Acid Pump, P-705B.
10.
Replaced seal and bearings on "B" Decay Heat Pump, P-261B.
11.
Changed filters on "B" Diesel Generator.
12.
Replaced torque switch and st roked SFC-22025, Letdown Common inlet Valve.
13 Cleaned pilot and seat and drained water f rom ai r line of SFV-46206, CCW Return Isolation Valve.
14.
Meggered cables for Make-up Pump supply breaker 4A02 and found to be okay.
15 Stroked SFV-20577, OTSG Auxiliary Feedwater Valve Bypass manually and then operated electrically in both directions with no problems.
16.
Installed rebuilt governor on "A" Diesel Generator.
17 Inspected lube oil coolers E-239C, E-237B, and E-239C.
18.
Strengthened pipe supports PS-13, PS-25, and PS-26.
19 Cleaned-lube oil cooler E-239C.
20.
Removed, disassembled, reassembled lube oil cooler E-239D. Coated cooler heads with Plasite.
Silver soldered unions into lines and inspected.
21.
Removed motor from make-up pump P-236M.
22.
Installed new torque pack on SFV-22025, Letdown Common inlet Valve, and repacked.
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