ML061980185
| ML061980185 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 08/05/2004 |
| From: | Nebraska Public Power District (NPPD) |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2006-0007, R4-5A38 Procedure 2.2.71, Rev 74 | |
| Download: ML061980185 (2) | |
Text
USE: REFERENCE S CNS OPERATIONS MANUAL EFFECTIVE:
8/5/04 SYSTEM OPERATING PROCEDURE 2.2.71 APPROVAL:
SORC/IQA OWNER: OSG SUPV SERVICE WATER SYSTEM DEPARTMENT:
OPS 1. PURPOSE ....... ..............................................
........ 1 2. PRECAUTIONS AND LIMITATIONS
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1 3. REQUIREMENTS
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3 4. PLACJNGSYSTEM IN SERVICE .................................
....... 3 5. NORMAL OPERATION
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6 6. BACKWASHING REC HXs ............................................
,. 9 7. BACKWASHINGTEC HXs ..................
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11 8. REMOVING SYSTEM-FROM SERVICE ... ..... ;........................
12 9. SW GLAND WATER SUBSYSTEM A OPERATION©
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14 10. SW GLAND WATER SUBSYSTEM B OPERATION©
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26 11. VENTING SW SYSTEM. .........................
... ..............
38 12. STARTINGSW ZURNSTRAINR
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39 13. SECURING SWZURN STRAINER..........
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43 14. SHIFTING SERVICE WATER PUMPS ...............................
.... 44 15. RECORDS ... ... ....... ..............
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45 ATTACHMENT 1 RIVER ELEVATION VS. SW LOOP SW-PI-2715A(B)
PRESSURE GRAPHS. .... ;,.: ...........................
46 ATTACHMENT 2 INFORMATION SHEET ...........................
50[REVISION VERIFICATION: (initial__
use + every 7 days) I REV. DATE CHANGES Revised gland water lineup to ensure MOV open before closing crosstie valve.Revised guidance for SW-21, SW-28, SW-1479, and SW-1480 to 74 see above be sealed valves.1. PURPOSE This procedure provides instructions for Operations personnel to operate the Service Water (SW) System.2. PRECAUTIONS AND LIMITATIONS
[ ]2.1 Gland water flow to SW pump bearings should be maintained at k 1.5 gpm at all times. Maximum water flow to bearings is 15 gpm.[] 2.2 Avoid pump runout; rated full load SW pump motor current is 42 amps.PROCEDURE 2.2.71 REVISION 74 PAGE 1 OF 55
." ° [] 2.3 At river temperatures approaching 951F, maintain REC HX outlet temperature below 98 0 F per Procedure 2.2.65.1.0
[ ]2.4 Pump motormay draw high current due to silting if pump has not been operated for an extended period, such as following a pump rebuild. In addition, inadequate clearance between pump impeller and liner may cause pump motor to draw high current. Per CR 94-0530 evaluation, pump motor may operate at a steady state current of up to 48 amps for a maximum lof 10 minutes after a cold motor start. If current does not lower to 42 amps within 10 miinutes from time pump motor was started, remove pump from service and wait at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> from time pump was stopped before attempting another start.[] 2.5 Sealed valves shall be controlled per Procedure 2.0.2.[ ] 2.6 Observe following 4160V motor starting restrictions:
[] NOTE 1 -;A start is closure of motor supply breaker.[ ] NOTE 2-A c0ld motor is a motor which has ýbeen idle for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.[1 ] NOTE 3 -Ahot motor is a motor which has been energized within last 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.[ J 2.6.1 A motor shall be at a stop prior to a start attempt.[] 2.6.1.1 A cold motor shall have no more than two initial start attempts.
Each additionalistart shall be preceded by a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> wait.[ 2.6.1.2 A hot motor shall have no more than one initial start attempt. Each additional start attempt shall be preceded by a I hour wait.[] 2.7 SW-STNR-A(B), SW ZURN STRAINERS, have an administrative out of service time of 10 days. If the out of service time cannot be met, 'there are no specific actions required.
However, increased Management involvement would be prudent to assist in swift resolution of problems which caused the out of service time to be exceeded.©
[] 2.8 With a SW zurn strainer bypassed and SW System in its normal three pump configuration; pump rotation should be altered to keep two pumps running in subsystem with operable strainer while swapping other two pumps as required.0 I PROCEDURE 2.2.71 1 REVISION 74 1 PAGE 2 OF 55 ]