ML17306A545

Monthly Operating Repts for Feb 1992 for Palo Verde Nuclear Generating Station,Units 1,2 & 3

ML17306A545
Person / Time
Site:	Palo Verde
Issue date:	02/29/1992
From:	Chavet K ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17306A546	List: ML17306A545 ML17306A547 ML17306A549
References
NUDOCS 9203170023
Download: ML17306A545 (31)

Text

ENCLOSURE 1 NRC MONTHLY OPERATING REPORT FOR FEBRUARY 1992 v osi7oo2a moses ADOCK 05000528 t'DR R PDR

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K A Chavet MONTH: February 1992 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1248 17 1251 18 1250 19 124 20 1248 21 1248 22 1245 23 1232 24 1219 25 10 1206 26 1195 27 12 1182 28 13 1170 29 14 1147 15 16

REFUELING INFORMATION DOCKET NO. 50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K A. Chavet Scheduled date for next refueling shutdown.

The Unit 1 third refueling outage began on 02/15/92.

Scheduled date for restart following refueling.

04/26/92 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment'E Yes. Figures 3.2-2 and 3.2-2A of the Technical Specifications will require revision to reflect different DNBR margin limits.

4 ~ Scheduled date for submitting proposed licensing action and supporting information.

Information to support the revision to Figures 3.2-2 and 3.2-2A was submitted on 12/24/91.

Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures.

The Unit 1, Cycle 4, nuclear design was performed using the DIT, ROCS, and MC computer codes described in Topical Report CENPD-266-P-A with the improvements in anisotropic scattering, higher order interface currents, nodal expansion method, and assembly discontinuity factors. Biases and uncertainties used in the Unit 1 Cycle 4 analysis were established by comparing results obtained from analytical calculation with measured data to insure that 95/95 confidence limits are maintained in the safety analysis.

The number of fuel assemblies.

a) In the core. 241*

b) In the spent fuel storage pool. 188*

Licensed spent fuel storage capacity. 1329 Intended change in spent fuel storage capacity. None

8. Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.

2004 (18 Month reloads and full core discharge capability).

The figures in 6.a and 6.b reflect fuel assembly locations at the beginning of the month. At the end of the month, the reactor was in the process of being defueled in accordance with the PVNGS refueling procedure.

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SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. 50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K A Chavet Februar 1992 02/01 0000 Unit began the month in Mode 1; 100% RX power.

02/08 0004 Began pre-refueling outage coast-down.

02/15 0215 Entered Mode 3 when RX was manually tripped from 20$ for refueling outage.

02/16 1520 Entered Mode 4.

02/17 0209 Entered Mode 5.

02/24 1936 Entered Mode 6.

02/29 2400 Ended the month in Mode 6; fuel off-load in progress'

SHUTDOWNS AND POWER REDUCTIONS February 1992 DOCKET NO 50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A. Chavet Outage Method of Cause and Corrective Duration Shutting System Component Action to No. Date Type~ Hours Reason~ Down Reactor~ LER No. Code~ Code~ Prevent Recurrence 92-02 02/15/92 S 357.7 N/A N/A N/A RX manually tripped as u entered third refueling outage.

~F-Forced ~Reason: ~Method: 4Exhibit F-Instructions S-Scheduled A-Equipment Failure(Explain) 1-Manual for Preparation of the Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG 0161)

E-Operator Training & License Previous Month Examination 5-Reduction of 20% or F-Administrative Greater in the Past ~Exhibit H-Same Source G-Operational Error 24 Hours H-Other (Explain) 9-Other-(Explain) 5

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A Chavee MONTH: February 1992 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1256 17 1252 1260 18 1255 1258 1257 125 20 1254 1253 21 1253 1253 22 1253 1255 23 1254 1255 24 125 1255 25 125 10 1254 26 1256 1254 27 1258 12 1254 .28 1255 13 1254 29 1254 14 125 15 1254 16 1254 7

REFUELING INFORMATION DOCKET NO. 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A Chavet Scheduled date for next refueling shutdown.

03/15/93, 4th refueling Scheduled date for restart. following refueling.

05/24/93 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

Yes. A change to the moderator temperature coefficient curve in the Technical Specification is anticipated as a result of the next refueling.

Scheduled date for submitting proposed licensing action and supporting information.

1/1/93 Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures.

The Unit 2, Cycle 5, reload should be typical to previous PVNGS cycles.

The number of fuel assemblies.

a) In the core. 241 b) In the spent fuel storage pool. 288 Licensed spent fuel storage capacity. 1329 Intended change in spent fuel storage capacity. None Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.

2004 (18 Month reloads and full core discharge capability).

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t t

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A Chavet Februar 1992 02/01 0000 Unit began the month in Mode 1; 100% RX power.

02/29 2400 Ended the month in Mode 1; 100% RX power.

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SHUTDOWNS AND POWER REDUCTIONS February 1992 DOCKET NO 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A. Chavet Outage Method of Cause and Corrective Duration Shutting System Component Action to No. -

Date Type Hours Reason Down Reactor LER No. Code Code~ Prevent Recurrence No reactor shutdowns or significant power reductions occurred during the month.

~F-Forced ~Reason: ~Method: ~Exhibit F-Instructions S-Scheduled A-Equipment Failure(Explain) 1-Manual for Preparation of the Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG 0161)

E-Operator Training & License Previous Month Examination 5-Reduction of 20% or F-Administrative Greater in the Past ~Exhibit H-Same Source G-Operational Error 24 Hours H-Other (Explain) 9-Other-(Explain) 10-

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NRC MONTHLY OPERATING REPORT DOCKET NO. 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A Chavet OPERATING STATUS

1. Unit Name: Palo Verde Nuclear Generatin Station Unit 3

2. Reporting Period: Februar 1992

3. Licensed Thermal Power (MWt): 3800

4. Nameplate Rating (Gross MWe): 1403

5. Design Electrical Rating (Net MWe): ~12 0

6. Maximum Dependable Capacity (Gross MWe): 1303

7. Maximum Dependable Capacity (Net MWe): 1221

8. If Changes Occur In Capacity Ratings (Item Numbers 3 Through 7)

Since Last Report, Give Reasons: N A

9. Power Level to Which Restricted, If Any (Net MWe): None

10. Reasons For Restrictions, If Any: N A

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ll~,:.:,:.Bcifii s,":,.'.;0;i$ :,::Ri 696 1,440 36,336 12 ~:'~j~ Ho'u'c8,'.;':.R'@ac!t'0'xgva's;:i,Crjfp~'i'o's1 ".ii':,'i":;;~ 696.0 1,407.8 25,405.5

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~::!.:':::,':;Sr'osTbeni'ibad>gBnei'jj,:'::i::..C'i'n'er'a.Ce'dW(:$ 8)'."".;.:.':'-"".".. 2,611,211 5,253,594 91,765,003

,:-,::;;6':r'b's's',,"'.:Bl'e'c':eiii:il.:",Enj'i'::.:,Ceiijia.'eb'd.""',:.-',:::(SR)':,:::; 917,600 1,848,000 32,166,700 867,648 1,744,544 30,262,469

19. 100.0% 97.1s 68.8%

20.,".;:aonkt;:: A'MM;ab'fPX@Cg'""'.Psc'cbx': '4): ~<<'+"-""'-"""""::::::: "" 100.0a 97.1a 68.8S n'k:;:.:,::HDC::.'.::.;,N'e'0)':::';::,;::,':;:,;,-::: '1.:,I>)Upi';:;.::Cpy'a't'keyI:::P'ae'j'br',"';:::',;:;.:(V~5 102.1% 99.2a 68.2a 98.2S 95.4a 65.6a 0.0s 2.9a 8.9s 24.

25. If Shutdown At End of Report Period, Estimated Date of Start-up: N A Forecast Achieved INITIAL CRITICALITY ~07 87 10/D25 87 INITIAL ELECTRICITY 07787 11 28 87 COMMERCIAL OPERATION 09 87 01 08 88 11-

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K A Chavet MONTH: February 1992 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1266 17 1268 1268 18 1266 1266 19 1266 1265 20 1266 5, 1061 1264 977 22 1264 1258 23 1264 1263 24 1265 1263 25 1266 10 1265 26 1266 1263 27 126 12 1263 28 1266 13 1264 29 126 14 1267 15 1248 16 1268 12

REFUELING INFORMATION DOCKET NO. 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K A Chavet Scheduled date for next refueling shutdown.

09/15/92, 3rd refueling Scheduled date for restart following refueling.

11/14/92 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendments The need for a Technical Specification change or other license amendment has not yet been determined.

Scheduled date for submitting proposed licensing action and supporting information.

N/A Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures.

A Technical Specification change request was submitted to the NRC on December 20, 1991, to allow the use of advanced zircaloy-based cladding alloys instead of Zircaloy-4 on up to 80 fuel rods in two fuel assemblies.

The number of fuel assemblies.

a) In the core. 241 b) In the spent fuel storage pool. 192 Licensed spent fuel storage capacity. 1329 Intended change in spent fuel storage capacity. None Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.

2005 (18 Month reloads and full core discharge capability).

13

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SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K A. Chavet Februar 1992 02/01 0000 Unit began the month in Mode 1; 100$ RX power.

02/05 1526 RX power cutback to 60% due to manual trip of feedwater pump 'B'.

Condensate pump 'A'ripped resulting in low suction pressure at both feedwater pumps. Feedwater pump 'B'as tripped as a protective measure to reduce the effect of the transient.

02/06 1623 RX power at 100%.

02/29 2400 Ended the month in Mode 1; 100$ RX power.

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I SHUTDOWNS AND POWER REDUCTIONS February 1992 DOCKET NO 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A. Chavet Outage Method of Cause and Corrective Duration Shutting System Component Action to No. Date Type Hours Reason Down Reactor LER No. Code Code~ Prevent Recurrence 92-02 02/05/92 F 25.0 N/A N/A N/A RX power cutback to after manual trip of 'B feedwater pump. Condensate pump 'A'ripped causing low suction pressure to the feedwater pumps.

~F-Forced ~Reason: ~Method: 4Exhibit F-Instructions S-Scheduled A-Equipment Failure(Explain) 1-Manual for Preparation of the Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG 0161)

E-Operator Training & License Previous Month Examination 5-Reduction of 20% or F-Administrative Greater in the Past Exhibit H-Same Source G-Operational Error 24 Hours H-Other (Explain) 9-Other-(Explain) 15