ML17306A258

Monthly Operating Repts for Oct 1991 for Palo Verde Units 1, 2 & 3

ML17306A258
Person / Time
Site:	Palo Verde
Issue date:	10/31/1991
From:	Chavet K, James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
254-01788-JML-K, 254-1788-JML-K, NUDOCS 9111190004
Download: ML17306A258 (29)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:911 FACIL:STN-50-528 STN-50-529 STN-50-530 AUTH.NAME CHAVET,K.A.

LEVINE,J.M.

RECIP.NAME 1190004 DOC.DATE: SR~~

NOTARIZED: NO DOCKET Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTHOR AFFILIATION Arizona Public Service Co.

(formerly Arizona Nuclear Power Arizona Public Service Co.

(formerly Arizona Nuclear Power RECIPIENT AFFILIATION

SUBJECT:

Monthly para repts for Oct 1991 for Palo Verde Units 1, 2

6 3

911115 DISTRIBUTION CODE:

IE24D COPIES RECEIVED: LTR I ENCL 3 SIZE:

TITLE: Monthly Operating Report (per Tech Specs)

D NOTES:STANDARDIZED PLANT 1

Standardized plant.

Standardized plant.

RECIPIENT ID CODE/NAME PD5 LA TRAMMELL,C INTERNAL: ACRS AEOD/DSP/TPAB NRR/DOEA/OEAB RGN5 EXTERNAL: EG&G BRYCE,J.H NSIC NOTES:

COPIES LTTR ENCL 3

3 1

1 10 10 1

1 1

1 1

1 1

1 1

1 1

1 RECIPIENT ID CODE/NAME PD5 PD THOMPSON,M AEOD/DOA NRR/DLPQ/LPEB10 EG~

NRC PDR COPIES LTTR ENCL 1

1 1

1 1

1 1

1 1

1 1

1 05000528 05000529 05000530 D

D NOTE TO ALL"RIDS" RECIPIENTS:

D D

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAMEFROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 26 ENCL 26

Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034

~

PHOENIX, ARIZONA85072-2034 JAMES M. LEVINE VICE PRESIDENT NUCLEAR PRODUCTION 254-01788-JML/KAC November 15, 1991 Docket Nos.

STN 50-528/529/530 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station P1-37 Washington, D.C.

20555

Subject:

Palo Verde Nuclear, Generating Station (PVNGS)

Units 1, 2,

and 3

Monthly Operating Reports for October 1991 File:

91-024-404; 91-056-026 Attached are the Monthly Operating Reports for October

1991, prepared and submitted

pursuant, to Specification 6.9.1.6 of Appendix A (Technical Specifications) to the PVNGS Units 1, 2, and 3

Operating Licenses.

By copy of this letter, we are also forwarding the Monthly Operating Reports to the Regional Administrator of the Region V Office.

If you have any questions, please contact Mr. Kent A. Chavet, at (602) 340-4718.

Very truly yours, JML/KAC/kac Attachments CC:

J.

B. Martin D.

H.

Coe A.

C.

Gehr A. H. Gutterman INPO Records Center Utility Data Institute (all w/attachments)

~BOC2{i

-911-1190004 911031 PDR ADOCK 05000528 R

PDR

l 4

NRC MONTHLY OPERATING REPORT DOCKET NO.

50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A. Chavet OPERATING STATUS l.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Unit Name:

Palo Verde Nuclear Generatin Station Unit 1 Reporting Period:

October 1991 Licensed Thermal Power (MWt):

3800 Nameplate Rating (Gross MWe):

1403 Design Electrical Rating (Net MWe):

1270 Maximum Dependable Capacity (Gross MWe): 1303 Maximum Dependable Capacity (Net MWe):

1221 If Changes Occur In Capacity Ratings (Item Numbers 3 Through 7)

Since Last Report, Give Reasons:

N A Power Level to Which Restricted, If Any (Net MWe):

None Reasons For Restrictions, If Any:

A h':"Zr'g':::-:.$a,'-.'.:Dat,"'e:::,;",:,-';Fr:.,";~:.;::CuYnul~atkyk'J:;,:':.

12.::.'::,::,:Ho'ur's'::;::Re ac.t'a:i::,".','@as::::::,;.Cr'i:tweak;:>:,-,".;;:',!::,'::::',,:",~:,"':,".',!::i 13:::,NReactoi':;,";:Rv'sexv'e>::,8hi'itd'oQxs:.Hours".":.N::!8.":.'4l

.':,'::";:,Un'it'.:;:R'e's'erve,';:,'Shut'8'own";":',Hour%,:,::::',~$ ';:h g';,::,::;;:,':,l!!j%m'j<j>'"~

16.

'!".::;::'Gr'o's's'.,':,::;.:Th'erma;1;::,Bn~er'."

,':,'.':-,:,:,Gro'ss,':-:'.:El'i$ er'..i'c'al,:::'8'ner@'i",."Ci'rierat'ed,';(HWH) 18.,':::.::.',.Net'::.,::,.Elec'tr'3,;iP'1:,,:;En'e'i'~;,.Cen'ei'ii;e8;

] 9 ~::" jjnjig'.":::.S'ervice'::"-'Hate hajj'rl":.(j')'"":gg)

" @"~'i'gx'mj@gj j)jp'~~mm 744 650.6 0.0 639.2 0.0 824,000 773 277 85.9%

7,296 6,134.9 0.0 6,104.5 0.0 22,947,275 7,959,800 7,498,352 83.7%

50,472 27,595.1 0.0 26,858.1 0.0 98,341,376 34,132,400 32,011,004 53.2S 20 21 22 23

.',-.VV'gij'Alai'3)~ah'Slimy,'

:iFa'o'Col.".j('p');:,:",',~jg':-,:.

,":j'.:Va'i,;':ti:-":Cajun'a'a'.i;ty,.'-'5,'ac'to'rg"(Vh,::inj'.;)HDC.">',"::.,8P.t!)gj'j;";::;: ~

!:-:::>V6i'O-..'.-:C'a'paci tyg>Fac'torC:::(Us'1'I'ig~! DER'40et)'Qj>p!~':::;:/;

,;:',':,:.Vnil:;:>Porc8dgiOu tag '~, Ra te>,',,:(ll);:>,;..,"'j";;,.>~i>>i'ji<ppg~~;;>

85.9S 81.8%

0.0%

83.7%

84.2%

80.9%

1.9a 53.2s 51.9%

49.9s 20.9%

24.

Shutdowns Scheduled Over Next 6 Months (Type, Date and Duration of Each): Refuelin outa e

Februar 1 199 0 da s

25.

If Shutdown At End of Report Period, Estimated Date of Start-up:

N A INITIALCRITICALITY INITIALELECTRICITY COMMERCIAL OPERATION Forecast

~05 85

~06 85

~11 85 Achieved 05/525 85 06/610 85 01/128 86 1

AVERAGE DAILY UNIT POWER LEVEL UNIT NAME PVNGS-1 DATE COMPLETED BY K A Chavet MONTH:

October 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1236 17 1236 123 18 1235 123 19 1234 1236 20 1235 1234 21 1228 1238 22 120 991 23 1199 1192 24 1189 1239 25 1246 10 1238 26 1249 1238 27 382 12 1238 28 13 1244 29 14 1235 30 15 1229 31 16 2

Pl

REFUELING INFORMATION DOCKET NO.

50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A Chavet Scheduled date for next refueling shutdown.

02/01/92, 3rd refueling Scheduled date for restart following refueling.

04/11/92 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment'?

Yes.

Figures 3.2-2 and 3.2-2A of the Technical Specifications will require revision to reflect different DNBR margin limits.

Scheduled date for submitting proposed licensing action and supporting information.

12/2/91 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 U1C4 reload analysis has been performed by ABB-CE using methodology from Topical Report CENPD-266-P-A, with revisions to biases and uncertainties for both the ROCS-NEM computer code and the net rod worth (N-1) calculation to include more recent measurements in the data base.

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 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).

3

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.

50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A. Chavet October 1991 10/01 0000 Unit began the month in Mode 1, 100%

RX power.

10/07 0903 Commenced RX power decrease to 65% due to Feedwater Pump Turbine

'A'heck valve problems.

10/07 10/07 10/08 1050 2315 0615 RX power at 65%.

Commenced RX power increase to 100%.

RX power at 100%.

1.0/27 0722 Entered Mode

.3 when the RX/turbine tripped as a result of a lightning-induced fault on a grid secondary feeder.

A momentary power load unbalance caused fast closure of two main turbine control valves.

The resultant change in steam flow caused Quick Open signals to the steam bypass control valves.

The main turbine control valves then reopened, which combined with the steam bypass control valves being

open, decreased primary temperature.

The power increase associated with the decreased temperature caused a reactor trip on Variable Over-Power.

In addition, Safety Injection Actuation Signals (SIAS) and Containment Isolation Actuation System (CIAS) actuated due to low pressurizer pressure.

10/27 10/27 10/31 LO/31 10/3L 10/31 0729 0905 0444 1237 1608 2400 Declared NUE due to SIAS.

Terminated NUE.

Entered Mode 2.

Entered Mode 1.

Main Generator Synchronized to the'rid.

Ended the month in Mode 1, ascending to 100%

RX power.

4

SHUTDOWNS AND POWER REDUCTIONS October 1991 DOCKET NO 50-528 UNIT NAME PVNGS-I DATE COMPLETED BY K.A. Chavet No.

Outage Method of Duration Shutting System Date Type Hours Reason Down Reactor LER No. Code'ause and Corrective Component Action to Code~

Prevent Recurrence 91/04 10/07/91 F

N/A N/A N/A N/A RX power decreased to 6

due to problems with a

check valve on Feedwater Pump Turbine 'A'.

91/05 10/27/91 F

104.8 N/A N/A N/A RX/turbine trip due to momentary power load unbalance from lightning induced fault.

(Details on previous page)

~F-Forced S-Scheduled

~Reason:

~Method:

A-Equipment Failure(Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from E-Operator Training & License Previous Month Examination 5-Reduction of 20$ or F-Administrative Greater in the Past G-Operational Error 24 Hours H-Other (Explain) 9-Other-(Explain) 4Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER) File (NUREG 0161)

~Exhibit H-Same Source

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A. Chavet MONTH:

October 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1 48 17 1250 18 1250 19 1248 20 1248 21 1251 22 1250 23 1225 24 1226 25 10 1249 26 1248 27 12 1249 28 13 1248 29 14 1266 30 15 1316 31 16 1288 7

REFUELING INFORMATION DOCKET NO.

50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A. Chavet Scheduled date for next r'efueling shutdown.

Unit was shut down on 10/17/91 for refueling.

Scheduled date for restart following refueling.

12/26/91 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

No.

Analyses indicate that no proposed Technical Specification change or other license amendment will be required as a result of the next refueling.

4.

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.

U2C4 is typical of PVNGS reload cycles.

The number of fuel assemblies.

a)

In the core.

241 b)

In the spent fuel storage pool.

204 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).

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.

8

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.

50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A. Chavet October 1991 10/01 10/16 10/17 10/17 10/17 10/23 10/31 0000 2100 0103 1253 2107 1256 2400 Unit began the month in Mode 1, 100%

RX power.

Commenced RX power decrease for refueling outage.

Entered Mode 3

when RX was manually tripped from 20%

to begin refueling outage.

Entered Mode 4.

Entered Mode 5.

Entered Mode 6.

Unit ended the month in Mode 6 with the reactor partially defueled.

9

SHUTDOWNS AND POWER REDUCTIONS October 1991 DOCKET NO 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A. Chavet No.

Outage Method of Duration Shutting System Date Type Hours Reason Down Reactor LER No. Code'ause and Corrective Component Action to Code~

Prevent Recurrence 91-06 10/17/91 S

359.0 N/A N/A N/A Unit shut down scheduled 70 day refueling outage.

~F-Forced S-Scheduled

~Reason:

A-Equipment Failure(Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Explain)

~Method:

1-Manual 2-Manual Scram 3-Automatic Scram 4-Continuation from Previous Month 5-Reduction of 20% or Greater in the Past 24 Hours 9-Other-(Explain) 4Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER) File (NUREG 0161)

~Exhibit H-Same Source 10-

t t

NRC MONTHLY OPERATING REPORT DOCKET NO.

50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A. Chavet OPERATING STATUS 1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Unit Name:

Palo Verde Nuclear Generatin Station Unit 3 Reporting Period:

October 1991 Licensed Thermal Power (MWt):

3800 Nameplate Rating (Gross MWe):

1403 Design Electrical Rating (Net MWe):

1270 Maximum Dependable Capacity (Gross MWe):

1303 Maximum Dependable Capacity (Net MWe):

1221 If Changes Occur In Capacity Ratings (Item Numbers 3 Through 7)

Since Last Report, Give Reasons:

N A Power Level to Which Restricted, If Any (Net MWe):

None Reasons For Restrictions, If Any:

N A 13 15 17 18 19 20 21.

22 23

';.".':;Hours:::.::

Unit ""R8e'8'e'tv'"'.::Sh8u td6w'n"'::::8'o8ur

.::,;,Gr'OSF::;;Th'er'iiial-:.

BneX'gj:::;,gk'n'er'a.Led,::8:',,(tiN)2),:8:::..:~:;;::,':::;:.:;:.:;::g

';.,:::Gi'~'ss.".: Bleciiical;:::,En'eig'y,,".',,::.,'Cherie'x~pt'id",:;:(Mt&),"',':;;

'";.N'e':,tiaEle'ct'r'Xe~'1,"::i'Bnerg j".;

,j):Un%i:88ex'vice,.':'.;:Pac'2to.L";:,"2,('P),:;ij:."",.;i

".::,:'"~~2:,!'i7!:,;"'.g>',:,.ll::".;:>$8',.2,,)>

'.28Unit~hvailabila.ty 'Faccor- (%.)<< 8-8 ~~ 8'i"-8q

',"'.xiii.'e'

..'..'Cij'aiity~Pactoi;'::,.;'.t:Vi':

"'4Qjfit '7a>>pa'c8:it j~'"'Fac to8 ji":.~(Qsin8'"'"'Qgg,'"jge8')g>>

j:8VLll!t...;Pox,cedqOu 0'8'-"::le'4e!.;. (%)p.::;~j'j::2,': j',,':.,::,'4~qg;.:~g':)

(8'38Th'i sg".,M'onth':.:;ij" 744 663.3 0.0 647.9 0.0 2,418,423 846,600 795,134 87.1a 87.1s 87.5s 84.2a 0.0a 7,296 5,226.5 0.0 5,112.6 0.0 18,635,791 6,511,400 6,117,547 70.1s

70. 1%

68.7a 66.0%

6.2e 8j~"::::::,',i'Cjimulat':iv'e':'.:.".',.';:."...,.'.'..

33,432 22,806.2 0.0 22,435.8 0.0 82,242,018 28,819,700 27,117,022 67.1%

67.1s 66.4S 63.9s 8.2s 25.

If Shutdown At End of Report Period, Estimated Date of Start-up:

N A INITIALCRITICALITY INITIALELECTRICITY COMMERCIAL OPERATION Forecast

~07 87 07787 09 87 Achieved

~10 25 87 ll 8

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:

October 1991 DAY AVERAGE DAILY POWER LEVEL 1214 DAY AVERAGE DAILY POWER LEVEL 125 1208 18 1259 1210 19 1262 2

3 20 1 64 1263 21 1258 1262 22 1255 1262 23 1258 1264 24 1260 1262 25 1265 10 1261 26 1268 1262 27 388 12 1261 28 13 1262 29 14 1264 30 1266 31 184 16 1264

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 amendment?

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 willbe submitted to the NRC which will 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

'I

t t

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH UNIT NAME PVNGS-3 COMPLETED BY K.A Chavet October 1991 10/01 0000 Unit began the month in Mode 1, 100%

RX power.

10/27 0722 Entered Mode 3 when the RX/turbine tripped as a result of a lightning-induced fault on a grid secondary feeder.

A momentary power load unbalance caused fast closure of all four main turbine control valves.

The resultant change in steam flow caused Quick Open signals to the steam bypass control valves and a Reactor Power Cutback.

The main turbine control valves then reopened, which combined with the steam bypass control valves being open, decreased primary temperature.

The power increase associated with the decreased temperature caused a

reactor trip on Variable Over-Power.

In addition, Safety Injection Actuation Signals (SIAS) and Containment Isolation Actuation System (CIAS) actuated due to low pressurizer pressure.

10/27 10/27 10/30 10/30 10/31 10/31 0729 0905 1604 2103 0728 2400 Declared NUE due to SIAS.

Terminated NUE.

Entered Mode 2.

Entered Mode l.

Main generator synchronized to the grid.

Ended the month in Mode 1, 50%

RX power.

14

SHUTDOWNS AND POWER REDUCTIONS October 1991 DOCKET NO 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A. Chavet No.

Outage Method of Duration Shutting System Date Type Hours Reason Down Reactor LER No. Code'ause and Corrective Component Action to Code~

Prevent Recurrence 91/08 10/27/91 F

96.1 H

N/A N/A N/A RX/turbine trip due momentary power load unbalance from lightning induced fault. (Details on perevious page)

~F-Forced S-Scheduled

~Reason:

A-Equipment Failure(Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Explain) 3Method:

1-Manual 2-Manual Scram 3-Automatic Scram 4.-Continuation from Previous Month 5-Reduction of 20% or Greater in the Past 24 Hours 9-Other-(Explain) 4Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER) File (NUREG 0161)

~Exhibit H-Same Source 15

'