View source for ST-HL-AE-2791, Monthly Operating Rept for Aug 1988 for South Texas Project Electric Generating Station Unit 1

{{Adams
| number = ML20154H519
| issue date = 08/31/1988
| title = Monthly Operating Rept for Aug 1988 for South Texas Project Electric Generating Station Unit 1
| author name = Forsyth M, Mcburnett M
| author affiliation = HOUSTON LIGHTING &amp; POWER CO.
| addressee name = 
| addressee affiliation = NRC OFFICE OF ADMINISTRATION &amp; RESOURCES MANAGEMENT (ARM)
| docket = 05000498
| license number = 
| contact person = 
| document report number = ST-HL-AE-2791, NUDOCS 8809220035
| document type = MONTHLY OPERATING ANALYSIS REPORT, TEXT-SAFETY REPORT
| page count = 16
}}

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SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 1 MONTHLY OPERATING F2EORT FOR AUGUST 25 - 31 HOUSTON LIGHTING AND PCUER C'. u NRC DOCKET NO. 50-498 LICENSE NO. NPF-76 1
Prepared by:                       MIrf           9      8 4
Lead Pe'rformanc4 Tec$1cian           Date Reviewed by:          s      ,
_s                       T!82 Per     ance Technician Supervisor           Date
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'                  8809220035 880831 PDR  ADOCK 05000498
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OPERATING DATA REPORT DOCKET NO.                        50-498 UNIT 1 DATE Aucust 11. 1988 COHPLETED BY                        A.P. Kent TELEPH0tTE 512-972-7786 OPERATING STATUS
: 1.      REPORTING PERIOD: 08/25-08/31 GROSS HOURS IN REPORTING PERIOD:                              168
: 2.       CURRENTLY AUTHORIZED POWER LEVEL (HWt): 3817 MAX. DEPEND. CAPACITY (HWe-Net): 1250.6 DESIGN ELECTRICAL RATING (HWe-Net):1250.6
: 3.      POWER LEVEL TO WHICH RESTRICTED (IF ANY)(HWe-Net): None
: 4.      REASONS FOR RESTRICTION (IF ANY): N/A THIS MONTH YR TO DATE CUMULATIVE
: 5.      NUMPER OF HOURS REACTOR WAS CRITICAL...... 96.0                                  96.0         96.0
: 6.      REACTOR RESERVE SHUTDOWN HOURS............. 0                                 0            0 ,_
: 7.      HOURS GENERATOR ON LINE.................... 74.5                              74.5         74.5
: 8.      UNIT RESERVE SHUTDOWN HOURS................ 0                                 0            0
: 9.      GROSS THERHAL ENERGY GENERATED (HVH)..... 200457.6           __
200457.6     200457.6 10.
GROSS ELECTRICAL ENERGY GENERATED (HWH).... 60720                              60720        60720 11.
NET ELECTRICAL ENERGY GENERATED (HWH)..... 50420                               50420        50420
: 12.      REACTOR SERVICE   FACTOR..................... 57%                               57%          57%
: 13.      '.EACTOR AVAILABILITY FACTOR............... 577                               57%          57%
14 LNIT SERVICE FACT 0R....................... 44%                              44%           44%
: 15. UNIT AVAILABILITY    FACTOR.................. 44%                              44%           44%
: 16. UNIT CAPACITY FACTOR (Using HDC)..........._24%                                   24%_         24%
: 17. UNIT CAPACITY FACTOR (Using Design HWe)...      24%                             __24%          24%
: 18. UNIT FORCED OUTAGE RATE................... _$6%                                   56%          56%
19.
SHUTDOWNS SCHEDULED OVER NEXT 6 HCNTHS (TYPE, DATE, AND DURATION OF EACH):
Scheduled 14 day outage to begin September 23, 1988 and February 1, 1989 for Bottom Mounted Instrumentation Inspection.
: 20.      IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OT STARTUP                              09/02/88 21.
UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): FORECAST ACHIEVED INITIAL CRITICALITY                                                      03/08/38 03/08/88 INITIAL ELECTRICITY                                                      03/30/88 03/30/88 COMMERCIAL OPERATION                                                      08,/25/88 08/25/88 NL.NRC.R.APR.AT (C68)

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-498       ~
UNIT NAME      1                   -
DATE    An cm m t 1I_ 19h8 COMPLETED BY      A.P. Kent TELEPHCIE     512-972-7786       .
REPORT MONTH August                                                     -
1                     2 No. Date   Type    Duration    Reason       Methed of      Licensee                             Cause & Corrective Systgm    Compongnt (Hours)                Shutting        Event     Code        Code                Action to 3
Down Reactor     Report #                             Prevent Recurrence 88-01 880826    F        45.2        A              3          88-049       SB        FUB          Turbine / Reactor trip from 100% power.
Cause unknown at the time of the event.
88-02 880828     F       12.1         A             9            N/A        SB         FUB         Turbine trip from 23%
power. Cause unknown at the time of the event.     (Subsequent investigation determined that the trip was caused by a failed fuse block in the Stator Cooling Vater turbine trip circuitry. This was determined to be th cause of ever.t 88-01. )
I F: Forced     Reascn:                                            Method:                 IEEE 805-1983 S: Scheduled  A-Equipment Failure (Explain)                       1-Manual B-Maintenance or Test                              2-Manual Scram.
C-Refueling                                        3-Automatic Scram.
D-Regulatory Restriction                                                 5 4-Cont. of Existing     IEEE 803A-1983 E-Operator Training & License Examination             Outage F-Administrative                                   5-Reduction G-Operational Error (Explain)                      9-Other H-Other (Explain) l l

l UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-498         .
UNIT NAME     1                  -
DATE    August 11, 1988 COMPLETED BY      A.P. Kent TELEPHONE    512-972-7786      "
REPORT '"" mi August 1                           2 No. Date  Type          Laration    season           Method of         Licensee    Systgm    Compongnt       Cause & Corrective (Hours)                  Shutting 3
Event      Code        Coce                 Action to Down Reactor           Report #                              Prevent Recurrence 88-03 880830    F             36.3       B                     1           N/A         SB         PFF          Steam leak. Cracked weld repair in Steam 1
Generator main steam 1                                                                                                                    vent line. Various other welds were l
penetrant tested to ensure problem was not
!                                                                                                                    common to other areas.
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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-498 UNIT 1 DATE     August 11, 1988 COMPLETED BY    A.P. Kent TELEPHONE 512-972-7786 4                                                                                                      4 HON 7H     August DAY      AVERAGE DAILY POWER LIVIL                    DAY   AVERAGE DAILY PolMR LEVEL (HWe-Nat)                                         (MWe-Net) 1                N/A                                 17               N/A 2                N/A                                 10   _
N/A 3                N/A                                 19               N/A 4                N/A                                 20              N/A 5                N/A                                 21              N/A 6                N/A                                 22              N/A 7                N/A                                 23              N/A 8                N/A                                 24              N/A 9                N/A                                 25             1179 10                 N/A                                 26              841 11                 N/A                                 27                0 12                 N/A                                 28                0 13                 N/A                                 29                82 14 4
_N/A                                 30               160 15                 N/A                                 31                0 i
16                 N/A t
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NL.NRC.R.APR.AT (C68)

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* Monthly Summary South Texas Project Unit i declared commercial operational status August 25 at 0001.
On August 26 a turbine / reactor trip occurred due to low stator water differential pressure. Subsequently a Safety Injection occurred due to low compensated steamline pressure. After the unit was placed on line on August 28, a turbine trip occurred delaying power ascension. By August 29 the unit was again on line.
Power ascension to 45% load commenced to allow troubleshooting tse the cause of the previous turbine trips. On August 30 the unit was reduced to 0% power to repair a steam leak in the main steam vent line.

PORVs and Safety Valves Summary No PORVs or Safety Valves were challenged during this reporting period.
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S3JTH TEXAS PROJECT                                       l ELECTRIC GENERATING STATION                                    I UNIT 1 MONTHLY OPERATING REPORT FOR AUGUST 1 - 24 HOUSTON LIGHTING AND POWER CO.
NRC DOCKET NO. 50-498 LICDISE NO. NPF-76 Prepared by:            SS       #f(Z             9        b Lead Phrformar/ce Tp6hnician         'Da t e Reviewed by:                                                9 /8/88 Performance Technician Supervisor              Date Reviewed B                                   TI
                      @ p seft        n neering    nager    / Ifate Reviewed By:                 o              9 9 V[
Plant upe inte ndent         Dath i                                       A
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Approved By: _.                            .h M
                                'P1' ant Marlager          Ddteh 1

                                                                                                       'l OPERATING DATA REPORT DOCKET NO. 50-498 UNIf 1 DATE August 11. ]_988 COMPLETED BY   A.P. Kent TELEPHONE 512-972-7786 OPERATING STATUS 1.
REPORTING PERIOD: 08/01-08/24 GROSS HOURS IN REPORTING PERIOD:              576
: 2.      CURRENTLY AUTHORIZED POWER LEVEL (HWt): 3817 MAX. DEPEND. CAPACITY (HVe-Net): 1250.6 DESIGN ELECTRICAL RATING (HWe-Net):1250.6 3.
POWER LEVEL TO WHICH RESTRICTED (IF ANY)(HWe-Net): See Item 4
: 4.      PPJETN3 FOR RESTRICTION (IF A!!Y): Unit in power ascension testing phase.
THIS MONTH YR TO DATE CUNULATIVE
: 5.      NUMBER OF HOURS REACTOR VAS CRITICAL...... 460.7               2303.84     2303.84
: 6.      REACTOR RESERVE SHUTDOWN    HOURS.............      0             0           0
: 7.      HOURS GENERATOR ON LINE....................        397.0       2030.18     2030.18
: 8.      UNIT RESERVE SHUTDOWN   HOURS................       0 1
0            0
: 9.      GROSS THERMAL ENERGY GENERATED (HVH). . . 1,238,131.2       3,966,352.6 3,966,352.6
: 10.       GROSS ELECTRICAL ENERGY GENERATED (MVH) . . . . 406,360     1,204,902.8    1,204,902.8
: 11.       NET ELECTRICAL ENERGY GENERATED (HVH)..... 370,011             998,930       998,930
: 12.       REACTOR SERVICE   FACTOR..................... N/A           N/A         N/A
: 13.       REACTOR AVAILABILITY   FACTOR................ N/A           N/A         N/A 14 UNIT SERVICE FACT 0R........................       N/A           N/A         N/A
: 15.      UNIT AVAILABILITY    FACTOR................... N/A           N/A         N/A
: 16.      UNIT CAPACITY FACTOR (Using HDC)..........._N/A                _N/A          N/A
: 17.      UNIT CAPACITY FACTOR (Using Dasign HWe).... N/A ..
N/A         N/A
: 18.      UNIT FO*"ED OUTAGE    RATE.................... N/A           N/A         N/A
: 19.      SHUTD(
                          , SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):
Schede
                         ,d 14 day outage to begin September 23, 1988 and February 1, 1989 for Bottom Mounted Instrumentation Inspection.
: 20.       IF S.!U1 bCVH AT END OF REPORT PERIOD, ESTIMATED DATE OF STARIUP: N/A 21.
UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION):          FORECAST ACHIEVED INITIAL CRITICALITY                                     03/08/88 03/08/88 INITIAL ELECTRICITY 03/30/88 _03/30/88, COMMERCIAL OPERATION 08/25/88 08/25/88 NL.NRC.R.APR.AT (C68)

N UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.       50-498                   '
UNIT NAME     1                   -
DATE    Aucust i1. 1988 COMPLETED BY       A.P. Kent
* TELEPHONE     512-972-7786 REPORT MONTH August l
No.                  Date  Type               Duration              Reason        Method of                      Licensee   Systga           Compongnt        Cause & Corrective (Hours)                         Shutting 3
Event Code               Code                Action to l                                                                                        Down Reactor                     Report #                                     Prevent Recurrence                '
i 88-17               880728      5                         2.8             B                 4                              N/A  N/A                 N/A         Performed React.or Trip Test at 100%
Power Plateau.
88-18               880807      F                         0               D                 5                              N/A  N/A                N/A          Reluced reactor power to comply with Tech.
Spec. action requirement for out of tolerance nuclear enthalpy rise hot channel factor.
88-19              880808       5                        0                3                 5                             N/A   N/A                N/A          Performed Large Load Reduction Test.

s UNIT SHUTDOWNS AND POW 1.R REDUCTIONS DOCKET NO.                     50-.98
* UNIT NAME         I DATE     Anonc:t 11_ 1988     ,
COMPLETED BY                     A.P. Kent            -
TELEPHONE           512-972-7786 REPORT MONTH August i
1                 2 No. Date                                                                   Type        Duration Reason       Method of       Licensee                                             Cause & Corrective Systga   Compongnt (Hours)              Shutting          Event     .Me         Ne                                 Acdon to 3
Down Reactor      Report #                                             Prevent Recurrence 1
88-20 880808                                                                           F   122.1      B              1             N/A         N/A       N/A                         Feed regulator valve steam leak repair.
88-21 880816                                                                            F    54.1      A             3            88-048       SB           V                         Turbine / Reactor trip           I due to Stator Cooling System transient experienced during pump switch over. A low flow condition was created by a faulty check valve.
I F: Forced                                                       Reason                                                              tiethod:                IEEE 805-1983 St Scheduled                                                   A-Equipment Failure (Explain)                                        1-Manual B-Maintenance or Test                                                2-Manual Scram.
C-Refueling                                                           3-Automatic Scram.
D-Regulatory Restriction                                                                    5 4-Cont, of Existing     IEEE 803A-1983 E-Opern9r Training & License Examination                                Outage F-Administrative                                                      5-Reduction G-Operational Error (Explain)                                          9-Other H-Other (Explain)

AVERAGE DAILY UNIT POWER LIVIL DOCKET NO.            50-498 UNIT 1 DATE Aucunt 11. 1988 COMPLETED BY                   A.P. Kent TELEPHONE 512-972-7786 MONTH   August l
DAY    AVERAGE DAILY POWER LEVIL                  DAY l
AVERAGE DAILY POWEP LEVEL           I (MWe-Net)                                                    (HWe-Net) 1                55                             17                              0 2                 410                            18                              0 3                 1139                           19                             591 4                 1237                           20                             1184 5                 1239                           21                             1219 6                 1165                           22                             1214 7                983 23                              1211             '
8                777                            24                              1208 9                  0 25                              N/A 10                  0                            26                              N/A 11                   0                            27                              N/A 12                   0                            28                             N/A 13                   0                            29                             N/A 14                 507                            30                        ,
N/A 15                 1079                           31                             N/A 16                 522 NL.NRC.R.APR.AT (C68)

Monthly Summary Following successful completion of the Reactor Trip at 100%
Power Test ending the July report period, STP Unit 1 again reached the 100% power plateau August 2.
From August 8 through 13 the unit reduced power to 0% to repack several regulator valves in the feedwater system and complete other specific maintenance tasks. The ascension toward 100% power began August 14 at a rate of approximately 3% per hour.
On August 16 the unit tripped during a Stator Cooling System pump switchover as preparations were being made for preventive maintenance on one of the pumps. Following a check of the Estimated Critical Conditions calculations, power ascension resumed and 100%
power was achieved August 20 marking the start of the 100-Hour NSSS Acceptance Test. The acceptance test was successfully completed August 24 ending the Initial Startup testing program.
On August 25. STP Unit I was declared commercially operable.
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PORVs and Safety Valves Summary No PORVs or Safety Valves were challenged during this reporting period.

The Light company                                      "        " " . " " ' "I,{001.,,,g)22g9211
(
llouston IJghting &: Power                 J                                       , _
September 12. 1988 ST-HL-AE-2791 File No.:        G02 10CFR50.71 U. S. Nuclear Regulatory Commission Attention: Document Control Desk washington, DC 20555 South Texas Project Electric Generating Station Unit 1                                        i Docket No. STN 50-498 Honthly Ope:*ating Reports for August 1988 Pursuant to 10CFR50.71(a) and the South Texas Project Electric Generating Station (STPEGS) Unit 1 Technical Specification 6.9.1.5, attached are the Monthly Operating Reports for August, 1988. Unit I was declared to be in commercial operation on August 25, 1988 at 0001 houra. As such, two reports are submitted for the month of August covering the conclusion of the startup phase (August 1 to 24) and the beginning of commercial operation (August 25 to 31). The data has teen "rezerced", as of the commercial operation initiation, in the later report.
If you should have any questions on this matter, please contact Mr. C.A. Ayala at (512) 972-8628.
                                                             .            r Manager, Operations Support Licensing MAH/CAA/n1 Attachments:       (1) STPEGS Unit 1 Monthly Operating Report - August 1-24, 1988 (2) STPEGS Unit 1 Monthly Operating Report - August 25-31, 1988 NL.NRC.R.AUG.LT A "      U " """"""     ""#''"'    ' I"
* g g

e flouston 1.ighting & lher Comluny ST-HL-AE-2791 File No.: G02 Page 2 CCI Regional Administrator, Region IV                    Rufus S. Scott Nuclear Regulatory Commission                        Associated General Counsel 611 Ryan Plaza Drive, Suite 1000                    Houston Lighting & Power Cempany Arlington, TX 76011                                  P. O. Box 1700 Houston, TX 77001 George Dick U. S. Nuclear   Regulatory Commission                INPO Washington, DC 20555                                 Records Center 1100 Circle 75 Parkway Jack E. Bess                                         Atlanta, Ga. 30339-3064 Resident Inspector /Operationr c/o U. S. Nuclear Regul tory Commission              Dr. Joseph M. Hendrie P. O. Box 910                                        50 Be11oort Lane Bay City, TX 77414                                   3ellport, NY 11713 J. I. Tapia Senior Resident Inspector / Construction c/o U. S. Nuclear Regulatory Commission P. O. Box 910 Bay City, TX 77414 J. R. Newman, Esquire Newman & Holtzinger, P.C.
1615 L Street, N.W.
Washington, DC 20036 t
R. L. Range /R. P. Verret Central Power & Light Company P. O. Box 2121 Corpus Christi, TX 78403 R. John Miner (2 copies)
Chief Operating Officer City of Austin Electric Utility 721 Barton Springs Rord Austin, TX 78704 R. J. Costello/M. T. Hardt City Public Service Board P. O. Box 1771 San Antonio, TX 78296 Revised 08/24/88 NL.DIST l
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