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| issue date = 04/30/1995
| issue date = 04/30/1995
| title = Monthly Operating Repts for Apr 1995 for PVNGS Units 1-3. W/950509 Ltr
| title = Monthly Operating Repts for Apr 1995 for PVNGS Units 1-3. W/950509 Ltr
| author name = FULTON J D, LEVINE J M
| author name = Fulton J, Levine J
| author affiliation = ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
| author affiliation = ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
| addressee name =  
| addressee name =  
Line 16: Line 16:


=Text=
=Text=
{{#Wiki_filter:P R.I&R.I"EY'CCEI.ERATED RIDS PROCI'.SSliG REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)LEVINE,J.M.
{{#Wiki_filter:P R.I &R.I PROCI'.SSliGRIDS  "EY'CCEI.ERATED REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
RECIP.NAME ACCESSION NBR:9505180256 DOC.DATE: RPf9'4/5&NOTARIZED:
ACCESSION NBR:9505180256                 DOC.DATE: RPf9'4/5& NOTARIZED: NO                               DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi                                       05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi                                     05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi                                     05000530 AUTH. NAME             AUTHOR AFFILIATION                                                                       P Arizona Public Service Co. (formerly Arizona Nuclear Power LEVINE,J.M.            Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME              RECIPIENT AFFILIATION
NO DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION P Arizona Public Service Co.(formerly Arizona Nuclear Power Arizona Public Service Co.(formerly Arizona Nuclear Power RECIPIENT AFFILIATION


==SUBJECT:==
==SUBJECT:==
Mo hl operating repts for Apr 1995 for PVNGS Units 1-3.W 95050 ltr.DISTRIBUTION CODE: IE24D COPIES RECEIVED:LTR ENCL SIZE: TITLE: Monthly Operating Report (per Tech Specs NOTES:STANDARDIZED PLANT Standardized plant.Standardized plant.05000528 05000529 I 05000530 RECIPIENT'D CODE/NAME PD4-2 PD TRAN,L INTERNAL: AC E CENTE 1'CB EXTERNAL LI TCO BRYCE i J H NRC PDR COPIES.LTTR ENCL 1 1 1 1 10 10 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME HOLIAN, B THOMAS,C AEOD/SPD/RRAB NRR/DISP/PIPB RGN4 NOAC COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 D 0 C u YOTE TO ALL"RIDS" RECIPIEY'TS:
Mo     hl operating repts for                     Apr 1995                 for PVNGS Units 1-3.
PLEASE ICELP US TO REDUCE iVASTE!COYTACTTHE DOCL:ifEYT CONTROL DESK, ROOXf PI-37 I EXT.5%-~083)TO F Ll Nfl.'4 KTE YOI.'R iAif L FROif DISTRIBUTION, LIS'I S FOR DOC!.'b,f Ei'I'S YOI.'Oi"I'EI'.I)!
W 95050       ltr.
TOTAL NUMBER OF COPIES REQUIRED: LTTR 22 ENCL 22 0$Ai k!l JAMES M.LEVINE VICE PRESIDENT NUCLEAR PRODUCTION Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O.BOX 52034~PHOENIX, ARIZONA 85072-2034 182-06068-JML/J LT/J DF May 9, 1995 U.S.Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555  
DISTRIBUTION CODE: IE24D             COPIES RECEIVED:LTR                             ENCL   SIZE:
TITLE: Monthly Operating Report (per Tech Specs NOTES:STANDARDIZED PLANT                                                                                 05000528 Standardized plant.                                                                               05000529  I Standardized plant.                                                                               05000530 RECIPIENT
            'DRECIPIENT CODE/NAME COPIES.
LTTR ENCL                           ID   CODE/NAME COPIES LTTR ENCL PD4-2 PD                        1        1        HOLIAN, B                         1    1 TRAN,L                          1        1        THOMAS,C                           1    1 INTERNAL: AC                              10      10          AEOD/SPD/RRAB                     1    1 E CENTE            1        1        1        NRR/DISP/PIPB                     1   1
                            'CB            1         1         RGN4                              1   1 EXTERNAL  LITCO BRYCE i J H                1         1         NOAC                              1   1           D NRC PDR                          1         1 0
C u
YOTE TO ALL"RIDS" RECIPIEY'TS:
PLEASE ICELP US TO REDUCE iVASTE! COYTACTTHE DOCL:ifEYTCONTROL DESK, ROOXf PI-37 I EXT. 5%-~083 ) TO F Ll Nfl.'4 KTE YOI.'R iAifL FROif DISTRIBUTION, LIS'I S FOR DOC!.'b,f Ei'I'S YOI.'Oi "I'EI'.I)!
TOTAL NUMBER OF COPIES REQUIRED: LTTR                           22               ENCL   22
 
0 $ Ai k
l
 
Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034 ~ PHOENIX, ARIZONA85072-2034 182-06068-JML/J LT/J DF JAMES M. LEVINE VICE PRESIDENT                                                  May 9, 1995 NUCLEAR PRODUCTION U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555


==Dear Sirs:==
==Dear Sirs:==


==Subject:==
==Subject:==
Palo Verde Nuclear Generating Station (PVNGS)Units 1,2, and 3 Docket Nos.STN 50-528/529/530 Monthly Operating Reports for April 1995 Enclosed are the Monthly Operating Reports for April 1995, 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, Arizona Public Service Company is also forwarding the Monthly Operating Reports to the Regional Administrator, NRC Region IV.If you have any questions, please contact Judy Fulton at (602)393-5277.Sincerely, JML/JDF/gez
Palo Verde Nuclear Generating Station (PVNGS)
Units 1,2, and 3 Docket Nos. STN 50-528/529/530 Monthly Operating Reports for April 1995 Enclosed are the Monthly Operating Reports for April 1995, 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, Arizona Public Service Company is also forwarding the Monthly Operating Reports to the Regional Administrator, NRC Region IV.
If you have any questions, please contact Judy Fulton at (602) 393-5277.
Sincerely, JML/JDF/gez


==Enclosures:==
==Enclosures:==
March 1995 Monthly Operating Reports cc:    L. J. Callan                    (all w/enclosures)
K. E. Perkins NRC Senior Resident Inspector INPO Records Center Utility Data Institute 9505i80256 950430 PDR    ADOCK    '05000528 R                      PDR
lt l'~
7
        'Jga g


March 1995 Monthly Operating Reports (all w/enclosures) cc: L.J.Callan K.E.Perkins NRC Senior Resident Inspector INPO Records Center Utility Data Institute 9505i80256 950430 PDR ADOCK'05000528 R PDR lt l'~7'Jgag NRC Monthly Operating Report Distribution List bcc: J.A.Bailey R.J.Bouquot B.J.Davis W.Ferguson B.A.Grabo J.W.Hazelbaker W.E.Ide J.M.Levine V.L.Mehrhof W.W.Montefour W.L.Stewart (7605)(all w/enclosures)
NRC Monthly Operating Report Distribution List bcc:   J. A. Bailey         (7605) (all w/enclosures)
(7996)(7646)(9816)(7636)(7693)(7294)(7602)(7712)(7466)(9082)
R. J. Bouquot         (7996)
I I Ff I
B. J. Davis           (7646)
W. Ferguson       (9816)
B. A. Grabo           (7636)
J. W. Hazelbaker     (7693)
W. E. Ide             (7294)
J. M. Levine         (7602)
V. L. Mehrhof         (7712)
W. W. Montefour       (7466)
W. L. Stewart         (9082)


C,'I l P I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.59-'F25 UNIT NAME DATE 95LQ5LK COMPLETED BY)LREUHQQ MONTH: April 1995 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 17 18 19 20 21 0 22'3 8 24 25 10 26 11 12 27 28 13 29 30 15 31 16 I I,)REFUELING INFORMATION DOCKET NO.~35 UNIT NAME~Ugly~DATE 9555LK COMPLETED BY~~an Scheduled date for next refueling shutdown.The 5th refueling outage began on 04/01/95.Scheduled date for restart following refueling.
I I
~06/1 0/95.Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?
Ff I
 
C, 'I l
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I AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 59-'F25 UNIT NAME DATE         95LQ5LK COMPLETED BY )LREUHQQ MONTH: April 1995 DAY         AVERAGE DAILYPOWER LEVEL           DAY   AVERAGE DAILYPOWER LEVEL 17 18 19 20 21 0                       22
                                                        '3 8                                             24 25 10                                             26 11                                             27 12                                             28 13                                             29 30 15                                             31 16
 
I, I
        )
REFUELING INFORMATION DOCKET NO.         ~35 UNIT NAME         ~Ugly~
DATE               9555LK COMPLETED BY       ~~an Scheduled date for next refueling shutdown.
The 5th refueling outage began on 04/01/95.
Scheduled date for restart following refueling.
~   06/1 0/95.
Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?
No Scheduled date for submitting proposed licensing action and supporting information.
No Scheduled date for submitting proposed licensing action and supporting information.
12/28/94 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.
12/28/94 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 fuel assembly will utilize Erbium as a burnable absorber (as was done for Units 2 and 3).The number of fuel assemblies.
The fuel assembly will utilize Erbium as a burnable absorber (as was done for Units 2 and 3).
1 Licensed spent fuel storage capacity.Intended change in spent fuel storage capacity.~os 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).
The number of fuel assemblies.
I I l pl  
1 Licensed spent fuel storage capacity.
Intended change in spent fuel storage capacity.   ~os 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).
I I
l pl


==SUMMARY==
==SUMMARY==
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET'NO.
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET'NO.           59-525     n UNIT NAME             MHG&i DATE                 Q5LQ5LK COMPLETED BY         ~gite 04/01   0000 Unit began the month in Mode   1 reducing Rx power to 20% for the 6th refueling outage.
59-525 n UNIT NAME MHG&i DATE Q5LQ5LK COMPLETED BY~gite 04/01 0000 04/01'006 04/01 0635 04/03 1008 04/06 2030 04/12 0034 04/27 0547 04/30 2359 Unit began the month in Mode 1 reducing Rx power to 20%for the 6th refueling outage.Entered Mode 3.Tripped the Rx for normal shutdown, officially beginning 6th refueling outage.Entered Mode 4.Entered Mode 5.Entered Mode 6.Rx is defueled.Exited Mode 6.Entered Mode 6.Core.reload.Unit ended the month in refueling outage Mode 6.
04/01 '006  Entered Mode 3. Tripped the Rx for normal shutdown, officially beginning 6th refueling outage.
SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME DATE COMPLETED BY TELEPHONE LVVI95-1~0/0~/~JuHan No.Date Outage Method of Duration Shutting Down Type" Hours.Reason2 Reactor3 LER No.System Component Cause and Corrective Action Code4 Code5 to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995.1F-Forced S-Scheduled Reason: A-Equipment Failure(Explain)
04/01  0635 Entered Mode 4.
B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training 8 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
04/03  1008 Entered Mode 5.
04/06  2030 Entered Mode 6.
04/12  0034 Rx is defueled. Exited Mode 6.
04/27  0547 Entered Mode 6. Core. reload.
04/30  2359 Unit ended the month in refueling outage Mode 6.


)AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.5%529 UNIT NAME 22HGR2 DATE QGLKLK COMPLETED BY JJ2JKHQQ EILRMZll MONTH: April 1995 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 823 17 1250 883 18 1249 I 3 1222 19 1249 1248 20 1250 1246 21 1251 1246 22 1251 1246 23 1250 1247 24 1251 1248 25 1252 10 1248 26 1250'80 27 1248 12 460 28 1248 13 1159 29 1246 14 1214 30 1242 15 1248 31 16 1251 REFUELING INFORMATION DOCKET NO.~29 UNIT NAME DATE 955555 COMPLETED BY~gJfzl Scheduled date for next refueling shutdown.The 6th refueling outage is scheduled for 03/16/96.Scheduled date for restart following refueling.
SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME            LVVI95-1 DATE                  ~0/0~/
05/1 0/96.Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?
COMPLETED BY          ~JuHan TELEPHONE Outage                    Method of Duration                Shutting Down                        System Component      Cause and Corrective Action No.          Date        Type"      Hours.      Reason2        Reactor3            LER No.        Code4    Code5        to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995.
a.Technical Specification change to Note 5 of Table 4.3-1 for the proposed installation of a cycle independent shape annealing matrix.Scheduled date for submitting proposed licensing action and supporting information.
1F-Forced              Reason:                                    3Method:                                  4Exhibit F - Instructions for Preparation S-Scheduled            A-Equipment Failure(Explain)                1-Manual                                  of the Data Entry Sheets for Licensee B-Maintenance or Test                      2-Manual Scram                            Event Report (LER) File (NUREG 0161)
12/08/95.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.
C-Refueling                                3-Automatic Scram D-Regulatory Restriction                    4-Continuation from Previous Month E-Operator Training 8 License              5-Reduction of 20% or Greater in the    Exhibit H-Same Source Examination                                Past 24 Hours F-Administrative                            9-Other-(Explain)
Stretch Power to 102%.The number of fuel assemblies.
G-Operational Error H-Other (Explain)
e)tn the core.~b)In the spent fuel storage pool.Licensed spent fuel storage capacity.~29 Intended change in spent fuel storage capacity.~g 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).
 
J n'f,ll g h  
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AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 5%529 UNIT NAME     22HGR2 DATE           QGLKLK COMPLETED BY   JJ2JKHQQ EILRMZll MONTH: April 1995 DAY       AVERAGE DAILYPOWER LEVEL         DAY     AVERAGE DAILYPOWER LEVEL 823                   17               1250 883                   18               1249 I 3                 1222                   19               1249 1248                   20               1250 1246                   21               1251 1246                   22               1251 1246                   23               1250 1247                   24               1251 1248                   25               1252 10                 1248                   26               1250
                                                                        '80 27               1248 12                 460                     28               1248 13                 1159                   29               1246 14                 1214                   30               1242 15                 1248                   31 16                 1251
 
REFUELING INFORMATION DOCKET NO.           ~29 UNIT NAME DATE                 955555 COMPLETED BY         ~gJfzl Scheduled date for next refueling shutdown.
The 6th refueling outage is scheduled for 03/16/96.
Scheduled date for restart following refueling.
05/1 0/96.
Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?
: a.         Technical Specification change to Note 5 of Table 4.3-1 for the proposed   installation of a cycle independent shape annealing matrix.
Scheduled date for submitting proposed licensing action and supporting information.
12/08/95.
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.
Stretch Power to 102%.
                ~
The number of fuel assemblies.
e) tn the core.
b) In the spent fuel storage pool.
Licensed spent fuel storage capacity.     ~29 Intended change in spent fuel storage capacity. ~g 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).
J n
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            )


==SUMMARY==
==SUMMARY==
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.RL529 UNIT NAME MHGR2 DATE 95LQ5LK COMPLETED BY~UltQQ 04/01 0000 04/01 0345 04/02 1649 04/03 0100 04/03 0235 04/03 1500 04/11 1435 04/11 1750 04/12 2101 04/13 0300 04/13 0435 04/13 0620 04/13 0840 04/1 3 1042 04/15 0015 04/15 0115 Unit began the month in power ascension to 70%.Rx power stabilized at 69%JSCALOR for testing.Commenced Rx power increase from 69%to 100%after completion of the 70%power plateau physics testing.Stabilized Rx power at 90%for surveillance testing.Commenced Rx power ascension to 100%after completion of surveillance testing.Stopped power ascension, Rx stabilized at 100%power.Indication of CW leak from AB loop to 2C hotwell.Commenced Rx power decrease to 40%to isolate CWAB loop.Rx power stabilized at 40%for CW leak on AB loop.Commenced Rx power increase to 100%.Stopped Rx power increase at 96%due to SG¹1 and SG¹2 sulfates.Exited Action Level 1 for sulfates on SG¹1 and SG¹2.RX power increase stopped at 95%for FWP suction pressure condensate discharge pressure limit due to condensate pump out of service.Commenced RX power increase to 100%.Stopped Rx power increase at 97%due to Main feed pump suction pressure limitations.
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.         RL529 UNIT NAME         MHGR2 DATE               95LQ5LK COMPLETED BY       ~UltQQ 04/01     0000 Unit began the month in power ascension to 70%.
Commenced Rx power increase to 100%.Rx power stabilized at 100%.Maintaining MFWP suction pressure,>300 psig.CD pump remains out of service.04/15 0945 04/15 1115 04/20 0924 04/22 0216 04/22 0330 04/30 2359 Rx power decreased to 99%for Hi Rate B/Ds.Rx power increased to 100%.Placed cond.demin.vessel C in service., Rx power decrease to 99%for Hi Rate B/Ds.Rx power increased to 100%.Unit ended the month in Mode 1 at 100%power.
04/01    0345 Rx power stabilized at 69% JSCALOR for testing.
SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME@VVI~DATE-QGMGLK COMPLETED BY~Dye~No.Date Type" Outage Duration Hours Method of Shutting Down Reason2 Reactor3 LER No.'-System Component Code4 Code5 Cause and Corrective Action to Prevent Occurrence 95-02-04/11/95 82.7 N/A N/A N/A Rx power reduced to 40%due to CW leak and condensate pump failure."F-Forced S-Scheduled Reason: A-Equipment Failure(Explain)
04/02    1649 Commenced Rx power increase from 69% to 100% after completion of the 70% power plateau physics testing.
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)
04/03    0100 Stabilized Rx power at 90% for surveillance testing.
*4Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER)File (NUREG 0161)Exhibit H-Same Source J)4 J'l.P  
04/03    0235 Commenced Rx power ascension to 100% after completion of surveillance testing.
04/03    1500 Stopped power ascension, Rx stabilized at 100% power.
04/11    1435 Indication of CW leak from AB loop to 2C hotwell. Commenced Rx power decrease to 40% to isolate CWAB loop.
04/11    1750 Rx power stabilized at 40% for CW leak on AB loop.
04/12    2101 Commenced Rx power increase to 100%.
04/13    0300 Stopped Rx power increase at 96% due to SG¹1 and SG¹2 sulfates.
04/13    0435 Exited Action Level 1 for sulfates on SG¹1 and SG¹2.
04/13    0620 RX power increase stopped at 95% for FWP suction pressure condensate discharge pressure limit due to condensate pump out of service.
04/13    0840 Commenced RX power increase to 100%.
04/1 3    1042 Stopped Rx power increase at 97% due to Main feed pump suction pressure limitations.
04/15    0015 Commenced Rx power increase to 100%.
04/15    0115 Rx power stabilized at 100%.         Maintaining MFWP suction pressure,>300 psig. CD pump remains out of service.
04/15     0945 Rx power decreased to 99% for Hi Rate B/Ds.
04/15    1115 Rx power increased to 100%.
04/20    0924 Placed cond. demin. vessel C in service.,
04/22    0216 Rx power decrease to 99% for Hi Rate B/Ds.
04/22    0330 Rx power increased to 100%.
04/30    2359 Unit ended the month in Mode     1 at 100% power.
 
SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME             @VVI~
DATE               - QGMGLK COMPLETED BY         ~Dye~
Outage                  Method of Duration              Shutting Down                          System Component      Cause and Corrective Action No.         Date       Type"     Hours     Reason2     Reactor3             LER No.         Code4   Code5       to Prevent Occurrence 95-02 04/11/95                 82.7                                         N/A             N/A     N/A         Rx power reduced to 40% due to CW leak and condensate pump failure.
"F-Forced             Reason:                                3Method:                                    4Exhibit F - Instructions for Preparation S-Scheduled           A-Equipment Failure(Explain)             1-Manual                                    of the Data Entry Sheets for Licensee B-Maintenance or Test-                   2-Manual Scram                              Event Report (LER) File (NUREG 0161)
C-Refueling                              3-Automatic Scram D-Regulatory Restriction                4-Continuation from Previous Month E-Operator Training & License            5-Reduction of 20% or Greater in the     Exhibit H-Same Source Examination                              Past 24 Hours F-Administrative                        9-Other-(Explain)
G-Operational Error H-Other (Explain)
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l i'>F~J gl L~~AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.UNIT NAME 22b!GR2 DATE QZQRK COMPLETED BY sLQ~IHQQ MONTH: April 1995 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1255 17 1259 1255 18 1258 l 254 19 1257 1256 20 1257 1256 21 1258 1255 22 1254 1256 23 1256 8 1253 24 1256 1256 25 1258 10 1259 26 1256 1258 27 1254 12 1257 28 1255 13 1256 29 1251 14 1256 30 1248 15 1255 31 16 1257 14 REFUELING INFORMATION DOCKET NO.%=539 UNIT NAME EEK~DATE 95L95LK COMPLETED BY JJ2JhlfQQ Scheduled date for next refueling shutdown.The 5th refueling outage is scheduled to begin 10/14/95.Scheduled date for restart following refueling.
L   ~
12/23/95.Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment7 Technical Specification change to Note 5 of Table 4.3-1 for the proposed installation of a'cycle independent shape annealing matrix.(submitted 12/7/94 to NRC).Scheduled date for submitting proposed licensing action and supporting information.
        ~
Submittal is planned for June 1995 to revise the list of analytical methods in Technical Specification 6.9.1.10.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.
AVERAGE DAILYUNIT POWER LEVEL DOCKET NO.
None.The number of fuel assemblies.
UNIT NAME     22b!GR2 DATE         QZQRK COMPLETED BY sLQ~IHQQ MONTH: April 1995 DAY       AVERAGE DAILYPOWER LEVEL           DAY     AVERAGE DAILYPOWER LEVEL 1255                     17               1259 1255                     18               1258 l 254                   19               1257 1256                     20               1257 1256                     21               1258 1255                     22               1254 1256                     23               1256 8                 1253                     24               1256 1256                     25               1258 10                 1259                     26               1256 1258                     27               1254 12                 1257                     28               1255 13                 1256                     29               1251 14                 1256                     30               1248 15                 1255                     31 16                 1257
b)In the spent fuel storage pool.Intended change in spent fuel storage capacity.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).,
 
I~'  
14 REFUELING INFORMATION DOCKET NO.           %=539 UNIT NAME           EEK~
DATE                 95L95LK COMPLETED BY         JJ2JhlfQQ Scheduled date for next refueling shutdown.
The 5th refueling outage is scheduled to begin 10/14/95.
Scheduled date for restart following refueling.
12/23/95.
Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment7 Technical Specification change to Note 5 of Table 4.3-1 for the proposed             installation of a'cycle independent shape annealing matrix. (submitted 12/7/94 to NRC).
Scheduled date for submitting proposed licensing action and supporting information.
Submittal is planned for June 1995 to revise the list of analytical methods in Technical Specification 6.9.1.10.
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.
None.
The number of fuel assemblies.
b) In the spent fuel storage pool.
Intended change in spent fuel storage capacity.
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).,
I
~ '


==SUMMARY==
==SUMMARY==
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.UNIT NAME DATE COMPLETED BY TELEPHONE lHL5Z EK~K2 9292K dJ)~Iten 04/01 0000 04/08 0253 04/08 2213 04/16 0026 Unit began the month in Mode 1 at 100%power.Rx power decreased to 99%for Hi Rate B/ds.Rx power increased to 100%.Rx power decreased to 99%for Hi Rate B/ds.04/16 0237 Rx powerincreased to100%.04/22 1009 04/22 1236 04/23 0050 04/23 0202 04/26 2149 04/26 2230 04/30 0139 04/30 0331 04/30 2359 Rx power decreased to 99%for ADV testing.Rx power increased to 100%.Rx power decreased to 99%for Hi Rate B/ds.Rx power increased to 100%.Rx power decreased to 97%for control valve testing.Rx power'increased to 100%.Rx power decreased to 99%for Hi Rate B/ds.Rx power increased to 100%.Unit ended the month in Mode 1 at 100%power.
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. lHL5Z UNIT NAME   EK~K2 DATE        9292K COMPLETED BY dJ)~Iten TELEPHONE 04/01 0000 Unit began the month in Mode 1 at 100% power.
r (~~V SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO~39 UNIT NAME/VVI~~DATE~05~5/COMPLETED BY~Ji~i~o Date-Type" Outage Method of Duration.Shutting Down Hours Reason2 Reactor3 LER No.System Code4 Component Cause and Corrective Action Code5 to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995"F-Forced S-Scheduled 2Reason: A-Equipment Failure(Explain)
04/08 0253 Rx power decreased to 99% for Hi Rate B/ds.
B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training 8 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 0 1 I 0 43-h t 1}}
04/08 2213 Rx power increased to 100%.
04/16 0026 Rx power decreased to 99% for Hi Rate B/ds.
04/16 0237 Rx powerincreased to100%.
04/22 1009 Rx power decreased to 99% for ADV testing.
04/22 1236 Rx power increased to 100%.
04/23 0050 Rx power decreased to 99% for Hi Rate B/ds.
04/23 0202 Rx power increased to 100%.
04/26 2149 Rx power decreased to 97% for control valve testing.
04/26 2230 Rx power'increased to 100%.
04/30 0139 Rx power decreased to 99% for Hi Rate B/ds.
04/30 0331 Rx power increased to 100%.
04/30 2359 Unit ended the month in Mode 1 at 100% power.
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SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO             ~39 UNIT NAME             /VVI~~
DATE                 ~05 ~5/
COMPLETED BY         ~Ji~i~o Outage                   Method of Duration       .       Shutting Down                         System Component      Cause and Corrective Action Date -    Type"      Hours       Reason2       Reactor3           LER No.       Code4   Code5       to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995 "F-Forced             2Reason:                                    3Method:                                  4Exhibit F - Instructions for Preparation S-Scheduled             A-Equipment Failure(Explain)                 1-Manual                                  of the Data Entry Sheets for Licensee B-Maintenance or Test                       2-Manual Scram                            Event Report (LER) File (NUREG 0161)
C-Refueling                                3-Automatic Scram D-Regulatory Restriction                    4-Continuation from Previous Month E-Operator Training 8 License              5-Reduction of 20% or Greater in the     Exhibit H-Same Source Examination                                Past 24 Hours F-Administrative                            9-Other-(Explain)
G-Operational Error H-Other (Explain) 1 0   I 0
43-h t 1}}

Latest revision as of 03:54, 4 February 2020

Monthly Operating Repts for Apr 1995 for PVNGS Units 1-3. W/950509 Ltr
ML17311A872
Person / Time
Site: Palo Verde  Arizona Public Service icon.png
Issue date: 04/30/1995
From: Fulton J, James M. Levine
ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
182-06068-JML-J, 182-6068-JML-J, NUDOCS 9505180256
Download: ML17311A872 (30)
v • d • e


Text

P R.I &R.I PROCI'.SSliGRIDS "EY'CCEI.ERATED REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9505180256 DOC.DATE: RPf9'4/5& NOTARIZED: NO DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH. NAME AUTHOR AFFILIATION P Arizona Public Service Co. (formerly Arizona Nuclear Power LEVINE,J.M. Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

Mo hl operating repts for Apr 1995 for PVNGS Units 1-3.

W 95050 ltr.

DISTRIBUTION CODE: IE24D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Monthly Operating Report (per Tech Specs NOTES:STANDARDIZED PLANT 05000528 Standardized plant. 05000529 I Standardized plant. 05000530 RECIPIENT

'DRECIPIENT CODE/NAME COPIES.

LTTR ENCL ID CODE/NAME COPIES LTTR ENCL PD4-2 PD 1 1 HOLIAN, B 1 1 TRAN,L 1 1 THOMAS,C 1 1 INTERNAL: AC 10 10 AEOD/SPD/RRAB 1 1 E CENTE 1 1 1 NRR/DISP/PIPB 1 1

'CB 1 1 RGN4 1 1 EXTERNAL LITCO BRYCE i J H 1 1 NOAC 1 1 D NRC PDR 1 1 0

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YOTE TO ALL"RIDS" RECIPIEY'TS:

PLEASE ICELP US TO REDUCE iVASTE! COYTACTTHE DOCL:ifEYTCONTROL DESK, ROOXf PI-37 I EXT. 5%-~083 ) TO F Ll Nfl.'4 KTE YOI.'R iAifL FROif DISTRIBUTION, LIS'I S FOR DOC!.'b,f Ei'I'S YOI.'Oi "I'EI'.I)!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 22 ENCL 22

0 $ Ai k

l

Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034 ~ PHOENIX, ARIZONA85072-2034 182-06068-JML/J LT/J DF JAMES M. LEVINE VICE PRESIDENT May 9, 1995 NUCLEAR PRODUCTION U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1,2, and 3 Docket Nos. STN 50-528/529/530 Monthly Operating Reports for April 1995 Enclosed are the Monthly Operating Reports for April 1995, 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, Arizona Public Service Company is also forwarding the Monthly Operating Reports to the Regional Administrator, NRC Region IV.

If you have any questions, please contact Judy Fulton at (602) 393-5277.

Sincerely, JML/JDF/gez

Enclosures:

March 1995 Monthly Operating Reports cc: L. J. Callan (all w/enclosures)

K. E. Perkins NRC Senior Resident Inspector INPO Records Center Utility Data Institute 9505i80256 950430 PDR ADOCK '05000528 R PDR

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NRC Monthly Operating Report Distribution List bcc: J. A. Bailey (7605) (all w/enclosures)

R. J. Bouquot (7996)

B. J. Davis (7646)

W. Ferguson (9816)

B. A. Grabo (7636)

J. W. Hazelbaker (7693)

W. E. Ide (7294)

J. M. Levine (7602)

V. L. Mehrhof (7712)

W. W. Montefour (7466)

W. L. Stewart (9082)

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I AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 59-'F25 UNIT NAME DATE 95LQ5LK COMPLETED BY )LREUHQQ MONTH: April 1995 DAY AVERAGE DAILYPOWER LEVEL DAY AVERAGE DAILYPOWER LEVEL 17 18 19 20 21 0 22

'3 8 24 25 10 26 11 27 12 28 13 29 30 15 31 16

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REFUELING INFORMATION DOCKET NO. ~35 UNIT NAME ~Ugly~

DATE 9555LK COMPLETED BY ~~an Scheduled date for next refueling shutdown.

The 5th refueling outage began on 04/01/95.

Scheduled date for restart following refueling.

~ 06/1 0/95.

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

No Scheduled date for submitting proposed licensing action and supporting information.

12/28/94 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 fuel assembly will utilize Erbium as a burnable absorber (as was done for Units 2 and 3).

The number of fuel assemblies.

1 Licensed spent fuel storage capacity.

Intended change in spent fuel storage capacity. ~os 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).

I I

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SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET'NO.59-525 n UNIT NAME MHG&i DATE Q5LQ5LK COMPLETED BY ~gite 04/01 0000 Unit began the month in Mode 1 reducing Rx power to 20% for the 6th refueling outage.

04/01 '006 Entered Mode 3. Tripped the Rx for normal shutdown, officially beginning 6th refueling outage.

04/01 0635 Entered Mode 4.

04/03 1008 Entered Mode 5.

04/06 2030 Entered Mode 6.

04/12 0034 Rx is defueled. Exited Mode 6.

04/27 0547 Entered Mode 6. Core. reload.

04/30 2359 Unit ended the month in refueling outage Mode 6.

SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME LVVI95-1 DATE ~0/0~/

COMPLETED BY ~JuHan TELEPHONE Outage Method of Duration Shutting Down System Component Cause and Corrective Action No. Date Type" Hours. Reason2 Reactor3 LER No. Code4 Code5 to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995.

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

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from Previous Month E-Operator Training 8 License 5-Reduction of 20% or Greater in the Exhibit H-Same Source Examination Past 24 Hours F-Administrative 9-Other-(Explain)

G-Operational Error H-Other (Explain)

)

AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 5%529 UNIT NAME 22HGR2 DATE QGLKLK COMPLETED BY JJ2JKHQQ EILRMZll MONTH: April 1995 DAY AVERAGE DAILYPOWER LEVEL DAY AVERAGE DAILYPOWER LEVEL 823 17 1250 883 18 1249 I 3 1222 19 1249 1248 20 1250 1246 21 1251 1246 22 1251 1246 23 1250 1247 24 1251 1248 25 1252 10 1248 26 1250

'80 27 1248 12 460 28 1248 13 1159 29 1246 14 1214 30 1242 15 1248 31 16 1251

REFUELING INFORMATION DOCKET NO. ~29 UNIT NAME DATE 955555 COMPLETED BY ~gJfzl Scheduled date for next refueling shutdown.

The 6th refueling outage is scheduled for 03/16/96.

Scheduled date for restart following refueling.

05/1 0/96.

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

a. Technical Specification change to Note 5 of Table 4.3-1 for the proposed installation of a cycle independent shape annealing matrix.

Scheduled date for submitting proposed licensing action and supporting information.

12/08/95.

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.

Stretch Power to 102%.

~

The number of fuel assemblies.

e) tn the core.

b) In the spent fuel storage pool.

Licensed spent fuel storage capacity. ~29 Intended change in spent fuel storage capacity. ~g 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).

J n

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SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. RL529 UNIT NAME MHGR2 DATE 95LQ5LK COMPLETED BY ~UltQQ 04/01 0000 Unit began the month in power ascension to 70%.

04/01 0345 Rx power stabilized at 69% JSCALOR for testing.

04/02 1649 Commenced Rx power increase from 69% to 100% after completion of the 70% power plateau physics testing.

04/03 0100 Stabilized Rx power at 90% for surveillance testing.

04/03 0235 Commenced Rx power ascension to 100% after completion of surveillance testing.

04/03 1500 Stopped power ascension, Rx stabilized at 100% power.

04/11 1435 Indication of CW leak from AB loop to 2C hotwell. Commenced Rx power decrease to 40% to isolate CWAB loop.

04/11 1750 Rx power stabilized at 40% for CW leak on AB loop.

04/12 2101 Commenced Rx power increase to 100%.

04/13 0300 Stopped Rx power increase at 96% due to SG¹1 and SG¹2 sulfates.

04/13 0435 Exited Action Level 1 for sulfates on SG¹1 and SG¹2.

04/13 0620 RX power increase stopped at 95% for FWP suction pressure condensate discharge pressure limit due to condensate pump out of service.

04/13 0840 Commenced RX power increase to 100%.

04/1 3 1042 Stopped Rx power increase at 97% due to Main feed pump suction pressure limitations.

04/15 0015 Commenced Rx power increase to 100%.

04/15 0115 Rx power stabilized at 100%. Maintaining MFWP suction pressure,>300 psig. CD pump remains out of service.

04/15 0945 Rx power decreased to 99% for Hi Rate B/Ds.

04/15 1115 Rx power increased to 100%.

04/20 0924 Placed cond. demin. vessel C in service.,

04/22 0216 Rx power decrease to 99% for Hi Rate B/Ds.

04/22 0330 Rx power increased to 100%.

04/30 2359 Unit ended the month in Mode 1 at 100% power.

SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO UNIT NAME @VVI~

DATE - QGMGLK COMPLETED BY ~Dye~

Outage Method of Duration Shutting Down System Component Cause and Corrective Action No. Date Type" Hours Reason2 Reactor3 LER No. Code4 Code5 to Prevent Occurrence 95-02 04/11/95 82.7 N/A N/A N/A Rx power reduced to 40% due to CW leak and condensate pump failure.

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

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from Previous Month E-Operator Training & License 5-Reduction of 20% or Greater in the Exhibit H-Same Source Examination Past 24 Hours F-Administrative 9-Other-(Explain)

G-Operational Error H-Other (Explain)

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AVERAGE DAILYUNIT POWER LEVEL DOCKET NO.

UNIT NAME 22b!GR2 DATE QZQRK COMPLETED BY sLQ~IHQQ MONTH: April 1995 DAY AVERAGE DAILYPOWER LEVEL DAY AVERAGE DAILYPOWER LEVEL 1255 17 1259 1255 18 1258 l 254 19 1257 1256 20 1257 1256 21 1258 1255 22 1254 1256 23 1256 8 1253 24 1256 1256 25 1258 10 1259 26 1256 1258 27 1254 12 1257 28 1255 13 1256 29 1251 14 1256 30 1248 15 1255 31 16 1257

14 REFUELING INFORMATION DOCKET NO.  %=539 UNIT NAME EEK~

DATE 95L95LK COMPLETED BY JJ2JhlfQQ Scheduled date for next refueling shutdown.

The 5th refueling outage is scheduled to begin 10/14/95.

Scheduled date for restart following refueling.

12/23/95.

Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment7 Technical Specification change to Note 5 of Table 4.3-1 for the proposed installation of a'cycle independent shape annealing matrix. (submitted 12/7/94 to NRC).

Scheduled date for submitting proposed licensing action and supporting information.

Submittal is planned for June 1995 to revise the list of analytical methods in Technical Specification 6.9.1.10.

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.

None.

The number of fuel assemblies.

b) In the spent fuel storage pool.

Intended change in spent fuel storage capacity.

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).,

I

~ '

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO. lHL5Z UNIT NAME EK~K2 DATE 9292K COMPLETED BY dJ)~Iten TELEPHONE 04/01 0000 Unit began the month in Mode 1 at 100% power.

04/08 0253 Rx power decreased to 99% for Hi Rate B/ds.

04/08 2213 Rx power increased to 100%.

04/16 0026 Rx power decreased to 99% for Hi Rate B/ds.

04/16 0237 Rx powerincreased to100%.

04/22 1009 Rx power decreased to 99% for ADV testing.

04/22 1236 Rx power increased to 100%.

04/23 0050 Rx power decreased to 99% for Hi Rate B/ds.

04/23 0202 Rx power increased to 100%.

04/26 2149 Rx power decreased to 97% for control valve testing.

04/26 2230 Rx power'increased to 100%.

04/30 0139 Rx power decreased to 99% for Hi Rate B/ds.

04/30 0331 Rx power increased to 100%.

04/30 2359 Unit ended the month in Mode 1 at 100% power.

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SHUTDOWNS AND POWER REDUCTIONS April 1995 DOCKET NO ~39 UNIT NAME /VVI~~

DATE ~05 ~5/

COMPLETED BY ~Ji~i~o Outage Method of Duration . Shutting Down System Component Cause and Corrective Action Date - Type" Hours Reason2 Reactor3 LER No. Code4 Code5 to Prevent Occurrence No reactor shutdowns or significant power reductions occurred during the month of April, 1995 "F-Forced 2Reason: 3Method: 4Exhibit F - Instructions for Preparation S-Scheduled A-Equipment Failure(Explain) 1-Manual of the Data Entry Sheets for Licensee B-Maintenance or Test 2-Manual Scram Event Report (LER) File (NUREG 0161)

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from Previous Month E-Operator Training 8 License 5-Reduction of 20% or Greater in the Exhibit H-Same Source Examination Past 24 Hours F-Administrative 9-Other-(Explain)

G-Operational Error H-Other (Explain) 1 0 I 0

43-h t 1

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