ML20207D609

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1998 Annual Operating Rept for Cpses,Units 1 & 2. with
ML20207D609
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 12/31/1998
From: Terry C
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9903100024
Download: ML20207D609 (19)
v • d • e


Text

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! L""" Log # TXX-99048 l File # 10250 '

Z .C Ref. # 10CFR50.36  !

1UELECTRIC l 1

i  !

I c.ww February 26,1999 I Senior Mce President l & PrincipalNuclear Oficer .

U. S. Nuclear Regulatory Commission  !

Attention: Document Control Desk

!' Washington, DC 20555 1

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SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)-UNITS 1 AND 2

DOCKET NOS. 50-445 AND 50-446
ANNUAL OPERATING REPORT FOR 1998 l 1

Gentlemen:  ;

Attached is the CPSES Annual Operating Report for 1998 prepared and submitted pursuant to Technical Specification 6.9.1.2 contained in Appendix A to the Comanche Peak Steam Electric Station Unit 1 Operating License NPF-87 and Unit 2 l Operating License NPF-89. This attachment also compiles with the annual l operating report guidance provided in position C.1.b of U.S. NRC Regulatory j Guide 1.16 Revision 4. l 4

If you have any questions, please contact Mr. Douglas W. Snow at (254)897-8448.

i Spp y, kEu~-- l C. L. Terryh V

DWS/dws Attachment A

c- Mr. J. E. Dyer, Region IV Mr. J. I. Tapia, Region IV Mr. T J. Polich, NRR

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k i Resident inspector, CPSES l Ms. M. L Themas. REIRS Project Manager (WlOriginal copy of the Personnel Exposure & Monitoring report) 9903100024 981231 P PDR ADOCK 05000445 R pon; COMANCllE PEAK $1 LAM ELECTRIC STAllON P.O. Box 1002 Glen Rose, Texas 7600.l002

A.tt:chmrt 12 TXX-99048 Pcge 1 of19 a =

COMANCHE PEAK STEAM ELECTRIC STATION  !

t ANNUAL OPERATING REPORT 1998 L

1 l TEXAS UTILITIES ELECTRIC COMPANY l

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Aft: chm =t ta TXX-99048 '

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TABLE OF CONTENTS l

l 1.0 Summary of Operating Experience l 2.0 Outages and Reductions in Power ,

3.0 Personnel Exposure and Monitoring Report 1 l

4.0 Report of Results of Specific Activity Analysis in which the Primary  ;

Coolant Exceeded the Limits of Technical Specification 3.4.7 l l

1 5.0 Irradiated FuelInspection Resulta.  !

l l 6.0 Outage Related Single Radioactivity Release or Radiation l Exposure to an Individual that Accounts for More than l 10 Percent of Allowable Annual Values l

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l Attichmert to TXX-99048 Prge 3 of19

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j 1.0 , SUM *AARY OF OPERATING EXPERIENCE I

The Comanche Peak Steam Electric Station (CPSES) is a dual unit

. pressurized water reactor power plant, each unit licensed at 3411

Megawatt thormal (MWt). It is located in Somervell County in North Central Texas approximately 65 miles southwest of the Dallas-Fort Worth -

i Metropolitan area. The nuclear steam supply system was purchased from l Westinghouse Electric Corporation and is rated for a 3425 MWt output.

s j 1.1 CPSES UNIT 1 CPSES Unit 1 achieved initial criticality on April 3,1990. Initial power j generation occurred on April 24,1990, and the plant was declared

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commercial on August 13,1990. Sinca being declared commercial, CPSES

Unit 1 has generated 64,908,275 not Megawatt-hours (MWH) of electricity i as of December 31,1998, with a net unit capacity factor of 76.8% (using 1 MDC). The unit and reactor availability factors were 80.6% and 89.9%,

j respectively, for the year 1998.

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! On March 15,1998 the unn began the end-of-cycle coast down at the end j of the sixth operating cycle. On March 21,1998 the unit began the power ramp down for its sixth refueling outage. The unit entered the refueling

] outage on March 21.

l During the refueling outage,92 fresh fuel assemblies were loaded for i j Cycle 7. The refueling outage lasted 38 days and ended on April 28,1998.

Unit 1 was returned to 100% power on May 4,1998.

j During the refueling outage, the major work scope completed included:

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' Valve Replacement e Rssidual Heat Removal Pump Coupling Modification e Transformer XST2 Work e Emergency Diesel Generator 18-month inspection e Emergency Diesel Generator replacement of four cylinder liners.

e 100% Eddy Current Testing on all four Steam Generators '

e Installation of Steam Generator inspection ports

  • Heater Drain System Modifications for increased reliability ,

o Reactor Coolant Pump Motor Replacement '

e Installation of Woodward 701 Governor System on Diesel Generators

  • Inspection of Fuel Assemblies e Reactor Coolant Pump Cartridge Seal Changeout e Tear down Inspection on the 2A & 2B Main Feedwater Pumps and turbines.

During this reporting period their were no failures or challenges to the Power Operated Relief Valves or Safety Valves.

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. _.-. _ _. _ _ _ _ . _ _ _ _ _ _ . . _ . _ _ _ _ _ . ~ . _ . . _ _ _ _ _ _ _ . _ _ _ _ _ . _ . _ _ _

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Altrchment ta TXX-99048 Pcge 4 of19 Figure 1.1-1 provides the generation profile of the average daily net electrical output of Unit i for 1998. Table 1.1-1 is a compilation of the

' monthly summaries of the operating data and Table 1.1-2 contains the yearly and total summaries of the operating data.

1.2 CPSES UNIT 2 CPSES Unit 2 achieved initial criticality on March 24,1993. Initial power generation occurred on April 9,1993, and the plant was declared commercial on August 3,1993. Since being declared commercial, CPSES Unit 2 has generated 42,636,077 not Megawatt-hours (MWH) of electricity as of December 31,1998, with a net unit capacity factor of 78.2% (using MDC). The unit and reactor availability factors were 99.6% and 100.0%,

- respectively, for the year 1998.

Figure 1.2-1 provides the generation profile of the average daily not electrical output of Unit 2 for 1998. Table 1.2-1 is a compilation of the monthly summaries of the operating data and Table 1.2-2 contains the yearly and the total summaries of the operating data.

During this reporting period their were no failures or challenges to the Power Operated Rollef Valves or Safety Valves.

2.0 OUTAGESAND REDUCTIONS IN POWfa i 2.1 CPSES UNIT 1 1 Table 2.1 describes unit operating experience including unit shutdowns l and provides explanations of significant dips in average power levels for j CPSES Unit 1.

j 2.2 CPSES UNIT 2 1

5 Table 2.2 describes unit operating experience including unit shutdowns 4 and provides explanations of significant dips in average power levels for CPSES Unit 2.

3.0 EXPOSURE AND MONITORING REPORT The personnel exposure and monitoring report for CPSES is provided in Table 3.0.

4.0 REPORT OF RESULTS OF SPECIFIC ACTIVITY ANALYSIS IN WHICH THE PRIMARY COOLANT EXCEEDED THE LIMITS OF TECHNICAL i SPECIFICATION 3.4.7 Technical Specification 6.9.1.2.b requires the reporting of results of specific activity analyses in which the primary coolant exceeded the lim!ts of Technical specification 3.4.7.

CPSES Units 1 and 2 primary coolant did not exceed the limits of Technical Specification 3.4.7 for the calendar year 1998.

A)tichmert to TXX-99048 Page 5 of19 5.0 IRRADIATED FUEL INSPECTION RESULTS 5.1 CPSES UNIT 1 The reactor coolant fission product activity levels were carefully nionitored throughout Cycle 6 operation. Analysis of the activity levels iridicated no leaking fuel. Nonethelets, visual inspections were performed by inspection personnel from the edge of the spent fuel pool to assess the external condition of the fuel assemblies. In addition, selected Cycle 6 assemblies, which had indications of Axlal Offset Anomaly (AOA) from flux map resulte, were also inspected using an underwater camera system. All fuel assembiles inspected appeared to be in good condition, including those with Indications of AOA.

5.2- CPSES UNIT 2 No irradiated fuel inspections were performed since there was no refueling outage for Unit 2 in 1998.

6.0 OUTAGE RELATED SINGl.E RADIOACTIVITY RELEASE OR RADIATION EXPOSURE TO AN INDIVIDUAL THAT ACCOUNTS FOR MORE THAN 10 PERCENT OF ALLOWABLE ANNUAL VALUES CPSES Units 1 and 2 did not experience any single release of radioactivity greater than 10% of an allowable dose limit during an outage or forced reduction in power of over 20% of designed power level during 1998.

s.

Attachmeat ta TXX-99048 -

Page 6 of19 FIGURE 1.1-1 -

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 1 i GENERATION PROFILE -

AVERAGE DAILY UNIT POWER LEVEL for 1998 1,200 -

I T h y y y

=

Y T ,

1,000 -

800 - l l

n 3 600 -

z I

k 400 -

P 200 - l .

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m - _ . _ _ - _ . . . _ . _ - . . _ . _ . _ . _ _ . . . . _ . _ _ _ . _ _._-. ... ,

Atta hmentisTXX-99048 . -

Page 7 of19 TABLE 1.1-1 (PAGE 1 OF 2) -

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 1 MONTHLY ELECTRIC POWER GENERATION DATA (1998)

January February March AgrJ1 May June Hours RX was Critical 744 672 482 94 744 720 RX Reserve Shutdown Hours 0.0 0.0 0.0 0.4 0.0 0.0 t i

Hours Generator On-Line 744 672 482 09 744 720

  • i Unit Reserve Shutdown Hours 0.0 0.0 0.0 0.0 0.0 0.0 1 Gross Thermal Energy Generated (MWH) 2,531,683 2,287,102 1,619,882 75,929_ 2,455,855 2,450,786 Gross Electiic Energy Generated (MWH) 857,893 '774,436 548,521 27,240 825,190 819,443 ,

Net Electric Energy Generated (MWH) 824,812 744,456 524,053 14,916 790,242 785,615 RX Service Factor (%) 100.0 100.0 64.8 13.1 100.0 100.0 i

RX Availability Factor (%) 100.0 100.0 64.8 13.1 100.0 100.0 Unit Service Factor (% 100.0 100.0 64.8 9.6 100.0 100.0 Unit Availability Factor (%) 100.0 100.0 64.8 9.6 100.0 100.0 I Unit Capacity Factor (%,using MDC net) 96.4 96.3 61.2 1.8 92.4 94.9 ,

Unit Capacity Factor (%,using DER net) 96.4 96.3 61.2 1.8 92.4 94.9 i'

Unit Forced Outage Rate (%) 0.0 0.0 0.0 0.0 0.0 0.0 Hours in Month 744 672 744 719 744 720 '

Net MDC (MWe) Estimated 1150.0 1150.0 1150.0 1150.0 1150.0 1150.0 W e . . _ _ ___ _ _ _ __-__m- a __ __ L--_ _ __-__m _ _ . _ f - :

- -- ~. -- ----- - - - - - - -.

Attachment ta TXX-99048 . .

Pag 2 8 ef19

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TABLE 1.1-1 (PAGE 2 OF 2)

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 1 -

i MONTHLY ELECTRIC POWER GENERATION DATA (1998)

July Auaust September October November December Hours RX was Critical 744 744 720 745 720- 744 RX Reserve Shutdown Hours 0.0 0.0 0.0 0.0 0.0 0.0 Hours Generator On-Line 744 744 720 745 720 744 l

Unit Reserve Shutdown Hours 0.0 0.0 0.0 0.0 0.0. 0.0 Gross Thermal Energy Generated (MWH) 2,533,272 2,536,025 2,451,499 2,532,029 2,454,118 2,532,480  ;

Gross Electric Energy Generated (MWH) 840,453 840,242 813,403 848,644 828,315 854,737 Net Electric Energy Generated (MWH) 805,262 805,031 779,551 814,091 796,125 821,809 RX Service Factor (%) 100.0 100.0 100.0 100.0 100.0 100.0 RX Availability Factor (%) 100.0 100.0- 100.0 100.0 100.0 100.0 Unit Service Factor (% 100.0 100.0 100.0 100.0 100.0 100.0 Unit Availability Factor (%) 100.0 100.0 100.0 100.0 100.0 100.0 i Unit Capacity Factor (%,using MDC net) 94.1 94.1 94.1 95.0 96.2 96.2 Unit Capacity Factor (%,using DER net) 94.1 94.1 94.1 95.0 96.2 96.2  !

Unit Forced Outage Rate (%)

0.0 0.0 0.0 0.0 0.0 0.0 Hours in Month 744 744 720 745 720 744 Net MDC (MWe) Estimated 1150.0 1150.0 1150.0 1150.0 1150.0 1150.0

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__.__._m _ _ _ . _ _ . ____._. _ __ . _____.._ ._ _ . _ _ . _ _ _ . _ _ _ _ _ . _ _ _ _ _ . _ . _ _ _ _ . _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ < _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ . _ . _

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Attachment to TXX-99048 P, age 9 of 19 TABLE 1.1-2 I COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 1 ANNUAL ELECTRIC POWER GENERATION DATA (1998)

YEAR CUMULATIVE Hours Rx was Critical 7,874 62,635 RX Reserve Shutdown Hours 0 2,632 Hours Generator On-Line 7,874 61,959 Unit Reserve Shutdown Hours 0 0' Gross Thermal Energy Gr nerated (MWH) 26,460,660 203,240,444 l Gross Electric Energy Generated (MWH) 8,878,517 67,950,477 N:t Electric Energy Generated (MWH) 8,505,963 64,908,275 RX Service Factor (%) 89.9 85.2 RX Availability Factor (%) 89.9 88.8 Unit Service Factor (%) 89.6 84.3 Unit Availability Factor (%) 89.6 84.3 Unit Capacity Factor (%,using MDC net) 84.4 76.8 )

1 Unit Capacity Factor (%,using DER net) 84.4 76 8

- Unit Forced Outage Rate (%) 0.0 3.7 Hours in Reporting Period 8,760 73,505 J

Attachment to TXX-99048 Page 10 of19 FIGURE 1.2-1 COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2 GENERATION PROFILE AVERAGE DAILY UNIT POWER LEVEL for 1998 1,200 -

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Y Y T- - T i

T T-1,000 i

800 600 ,

h 400 200 t

0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

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Attachment t3 TXX-99048 , .

Page 11 of 19 TABLE 1.2-1 (PAGE 1 OF 2) -

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2 MONTHLY ELECTRIC POWER GENERATION DATA (1998) -

January Februarv March April -May June  :

i Hours RX was Critical 744 672 729 719 744 720 ,

RX Reserve Shuidown Hours 0.0 0.0 15.0 0.0 0.0 0.0  !

Hours Generator On-Line 744 672 725 719 744 720 Unit Reserve Shutdown Hours 0.0 0.0 0.0 0.0 0.0 0.0 [

Gross Thermal Energy Generated (MWH) 2,532,970 2,227,109 2,428,176 2,450,650 2,533,092 2,454,480 Gross Electric Energy Generated (MWH) 865,991 760,164 826,810 836,066 861,928 829,823 Net Electric Energy Generated (MWH) 834,724 732,220 793,849 802,788 828,908 797,802 ,

RX Service Factor (%) 100.0 100.0 96.0 100.0 100.0 100.0' RX Availability Factor (%) 100.0 100.0 100.0 100.0 100.0 100.0  !

Unit Service Factor (% 100.0 100.0 97.5 100.0 100.0 100.0  ;

t Unit Availability Factor (%) 100.0 100.0 97.5 100.0 100.0 100.0 Unit Capacity Factor (%,using MDC net) 97.6 94.7 92.8 97.1 96.9 96.4 i i

Unit Capacity Factor (%,using DER net) 97.6 94.7 92.8 97.1 96.9 96.4 i Unit Forced Outage Rate (%) 0.0 0.0 2.5 0.0 0.0 0.0 Hours in Month 744 672 744 719 744 720 Net MDC (MWe) Estimated 1150.0 1150.0 1150.0 1150.0 1150.0 1150.0 i i

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Att:chmelt ta TXX-99048 ,

Peg 212 cf19 TABLE 1.2-1 (PAGE 1 OF 2)

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2 MONTHLY ELECTRIC POWER GENERATION DATA (1998) -

t J_uJly Auaust , September October November Decemb3r Hours RX was Critical 744 744 720 745 720 744 ,

RX Reserve Shutdown Hours 0.0 0.0 0.0 0.0 0.0 0.0 Hours Generator On-Line 744 74e .720 745 720 744 Unit Reserve Shutdown Hours 0.0 - 0.0 0.0 0.0 0.0 0.0  :

. Gross Thermal Energy Generated (MWH) 2,285,174 2,048,722 2,281,630 2,532,718 2,450,885 2,535,523 j Gross Electric Energy Generated (MWH) - 759,241 671,683 760,736 859,456 836,407 865,228 Net Electric Energy Generated (MWH) 726,324 638,941 728,788 826,306 803,418 831,228 ,

RX Service Factor (%) 100.0 100.0 100.0 100.0 100.0 100.0 i

RX Availability Factor (%) 100.0 100.3 100.0 100.0 100.0 100.0 '

Unit Service Factor (% 100.0 100.0 100.0 100.0 100.0 100.0 .

Unit Availability Factor (%) 100.0 100.0 100.0 100.0 100.0 100.0 Unit Capacity Factor (%,using MDC net) 84.9 74.7 88.0 96.4 97.0 97.2 I

Unit Capacity Factor (%,using DER net) 84.9 74.7 88.0 %4 97.0 97.2 Unit Forced Outage Rate (%) 0.0 0.0 0.0 0.0 0.0 0.0 Hours in Month 744 744 720 745 720 744 l Net MDC (MWe) Estimated 1150.0 1150.0 1150.0 1150.0 1150.0 1150.0

dttschmert ta TXX-99048 .

Page 13 of19

. TABLE 1.2 2 COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2

, ANNUAL ELECTRIC POWER GENrftATION DATA (1998) l YEAR CUMULATIVE Haurs Rx was Critical 8,745 40.849 RX Reserve Shutdown Hours -15 2,326 i

Hsurs Generator On-Line 8,741 40,530 '

' Unit Reserve Shutdown Hours 0 0

< Crcss Thermal Energy Generated (MWH) 28,761,127 131,867,013 Cross Electric Energy Generated (MWH) 9,345,296 44,534,733 l Nst Electric Energy Generated (MWH) 9,733,421 42,636,077 l

l RX Service Factor (%) 99.8 86.1 RX Availability Factor (%) 100.0 91.0 Unit Service Factor (%) 99.8 85.4 Unit Availability Factor (%) 99.6 85.4 l

Unit Capacity Factor (%,using MDC not) 92.8 78.2 Unit Capacity Factor (%,using DER not) 92.8 78.2 Unit Forced Outage Rate (%) 0.2 4.7 Hsurs in Reporting Period 8,760 47,440 l

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Att
chmeat ts TXX-99048 Page 14 of19
TABLE 2.1 (PAGE 1 OF 1)

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 1 UNIT OPERATING EXPERIENCE INCLUDING SHUTDOWNS AND POWER REDUCTIONS DURING 1998 METHOD OF l TYPE SHUTTING DOWN j F: FORCED DURATION

  • THE REACTOR OR i NO DATE - S: SCHEDULED . (HOURS) REASON REDUCING POWER CORRECTIVE ACTION / COMMENTS l

l 1 980321 S 261.77 C 1 On March 21 at 0214, the Unit was taken offline

and began a scheduled refueling outage

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(1RF06). The Unit ended the Month in Mode 6.

E 4 1a 980401 S 649.65 C 1 On March 21 at 0214, the Unit began a scheduled ,

j refueling outage (1RF06). The unit was returned to l  :;ervice after the completion of the refueling outage

! on April 28 at 0239. The unit returned to 100% power i on May 04 at 2120.

4 2 980430 F A 4 On April 30, at 1410, during the ramp to 100% power

, after the completion of 1RF06, the unit was held at 71% power to replace the inboard bearing on heater drain pump 1-02. The unit ended the month with work in progress.

) 2A- 980501 F A 4 On April *0, at 1410, during the ramp to 100% power 3

after the completion of 1RF06, the unit was held at 71% power to replace the inboard bearing on heater drain pump 1-02. The unit Segan the month with

. work in progress. The work was completed and the unit returned to 100% power May 04 at 2120.

(

1) REASON 2) METHOD 1: MANUAL'

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A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION 3: CAIN T OR TEST F; ADMINISTRATIVE 2: MANUAL SCRAM

, "C: CEFUELING G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM .

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' 0: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)

. -* INDICATES SHUTDOWN HOURSIOTHERWISE "NA" FOR NOT APPLICABLE e

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Att chmut ta TXX-99048 .

Page 15 of19 TABLE 2.2 (PAGE 1 OF 3)

I COMANCilE PEAK STEAM ELECTRIC S1 ATION - UNIT 2 UNIT OPERATING EXPERIENCE INCLUDING SHUTDOWNS AND POWER REDUCTIONS DURING 1998

)

j METHOD OF

TYPE SdUTTING DOWN F
FORCED DURATION
  • THE REACTOR OR NO DATE S: SCHEDULED (HOURS) REASON REDUCING POWER CORRECTIVE ACTIONICOMMENTS 1

s 1 980225 F H 4 On February 25, at 1941 the unit experienced a turbine runback due to lightning induced secondary side transients. Power was reduced to 90%. At 2025, i the unit experienced a second turbine runback.

Technical Specification axial flux differential limits were exceeded (Penalty Minutes) and the unit power was reduced to 45%. The penalty minutes expired and the unit was returned to 100% power on February 27 at 1439.

2 $#80307 F H 1 On March 07 at 1150, during a Severe Thunderstorrn Watch, the unit had a turbine runback due to lightning induced secondary side transients. Power was rnanually reduced to 70%. When restoring to 100% power a loss of Heater drain forward flow required a return to 70% power at 1957. The repairs were completed and the unit was returned to 100%

power on March 08 at 1020.

1) REASON 2) METHOD A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION 1: MANUAL C: CA!NT OR TEST F: ADMINISTRATIVE 2: MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)
  • INDICATES SH'UTDOWN HOURS /OTHERWISE "NA" FOR NOT APPLICABLE e

. M. ._._._.u _..____.____m_._._ _ _ _ _ _ _ . _ _ _ _ _ _ . _ _ . _ _ _ _ . . _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ . _ _ . , _ _ . _ _ _ _ _ _ _ _ _ , _ _ . _ . , _ . _ _ . _ _ _ _ _ _ _ _ , _ _ _ _ , _ _ _ _ . , _ _ _ _ _ _ _ _ _ _ , _ _ _ _ _ _ , _ _ . _ _ _ _ _ _ _ _ _ _ y- y,- - ., ,_

Att:chmut ta TXX-99048 Page 16 of19 TABLE 2.2 (PAGE 2 OF 3) -

COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2 UNIT OPERATING EXPERIENCE INCLUDING SHUTDOWNS AND POWER REDUCTIONS DURING 1998 METHOD OF TYPE SHUTTING DOWN F: FORCED DURATION

  • TFE REACTOR OR NO DATE S:. SCHEDULED (HOURS) REASON REDUCING POWER CORRECTIVE ACTIONICOMMENTS 3 980308 F 18.60 A 3 On March 08 at 2201, the unit had a turbine trip and reactor trip due to a generator primary water high temperaturo alarm. The high temperature alarm was due to both Turbine Plant Cooling Water pumps tripping on a lo-lo tank level The cause was identified as a failed level switch which was repaired and the unit returned to service on March 9 at 1648. The unit was returned to 100% power on March 10 at 1354. (See the Summary of Operating Experience for additional details, LER 446I98002.)

4 980716 S H' 4 On July 16 at 0000, unit power was reduced to 81%

power to ensure the turbine blade vibrations did not exceed established limits. This planned reduction was a conservative response to expected high summer temperatures.

1) REASON 2) METHOD A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION 1: MANUAL E: CAINT OR TEST F: ADMINISTRATIVE 2: MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)
  • IN!lCATES SHUTDOWN HOURSIOTHERWISE "NA" FOR NOT APPLICABLE L

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Attrchmrit ts TXX-99048 Page 17 of 19 4 TABLE 2.2 (PAGE 3 OF 3) j COMANCHE PEAK STEAM ELECTRIC STATION - UNIT 2 UNIT OPERATING EXPERIENCE INCLUDING SHUTDOWNS AND POWER REDUCTIONS DURING 1998 METHOD OF

{ *

, TYPE SHUTTING DOWN F: FORCED DURATION

  • THE REACTOR OR j NO DATE S: SCHEDULED (HOURS) REASON REDUCING POWER CORRECTIVE ACTIONICOMMENTS i

42 980801 S H 4- On July 16 at 0000, unit power was reduced to 81% power to j ensure the turbine blade vibrations did not exceed established limits. This planned reduction was a conservative response to j expected high summer temperatures. Unit was at 81% power

, for the entire month.

f 4b 980901 S H 4 On July 16 at 0000, unit power was reduced to 81% power to l '

ensure the turbine blade vibrations did not exceed established j limits. This planned reduction was a conservative response to 4

expected high summer temperatures. Unit began to ramp to

, 100% power on September 11 at 2100. The Unit was returned to 100% power on September 12 at 0515.

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1) REASON 2) METHOD

. A: EQUIPMENT FAILURE (EXPLAIN) ' E: OPERATOR TRAINING AND LICENSE EXAMINATION 1: MANUAL

, C: CAINT OR TEST F: ADMINISTRATIVE 2: MANUAL SCRAM C: REFUELING ' G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)

  • INDICATES SHUTDOWN HOURS /OTHERWISE "NA" FOR NOT APPLICABLE k

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. . _ . . - - - ~ . . - . . = . . - - - - -.

.,- dit:chme t ts TXX-99048 Page 18 of 19 i

COMANCHE PEAK STEAM ELECTRIC STATION UNITS 1 AND 2 1998 PERSONNEL EXPOSURE AND MONITORING REPORT

  1. Personnel I,gigi Person - r,gg Work & Job Function Station Utility Contract Station Utllity Contract R: actor Operations & Surveillance -

Maintenance & Construction 170 0 238 0.369 .000 2.378 Operations 292 1 169 5.758 .000 0.281 Health Physict. & Lab 56 1 68 6.604 .000 5.472 Supervisory & Office Staff 41 0 41 0.068 .000 0.047  ;

Engineering Staff 145 0 47 0.634 .000 0.150 Riutine Plant Maintenance Maintenance & Construction 213 0 605 7.126 .000 71.140 Operations 68 0 26 1.601 .000 0.832 Health Physics & Lab 31 0 25 0.852 .000 0.367 Supervisory & Office Staff 19 0 4 0.129 .000 0.001 Engineering Staff 69 0 63 0.679 .000 3.703 In-service inspection Maintenance & Construction 28 0 180 0.559 .000 40.245 Operations 23 0 26 ~ 0.518 .000 7.283 i Health Physics & Lab 16 0 12 0.899 .000 1.651 i Supervisory & Office Staff 0 0 0 0.000 .000 0.000 Engineering Staff 9 0 52 0.172 .000 8.117 Special Plant Maintenance Maintenance & Construction 17 0 147 0.009 .000 36.609-Operations . 6 0 9 0.000 .000 1.081 Health Physics & Lab 0 0 0 0.000 .000 0.000 Supervisory & Office Staff 0 0 0 0.000 .000 0.000 Engineering Staff 7 0 19 0.761 .000 1.259 j Waste Processing l Maintenance & Construction 24 0 22 0.049 .000 0.485 Operations 26 0 6 0.689 .000 0.848 j Health Physics & Lab 34 0 5 1.351 .000 0.004 l l

Supervisory & Office Staff 0 0 1 0.000 .000 0.000 Engineering Staff 4 0 0 0.026 .000 0.000 R: fueling Maintenance & Constructiore 84 0 178 0.562 .000 21.557 Operations 55 0 20 1.360 .000 0.252  !

Health Physics & Lab 18 0 17 0.684 .000 0.821 l Supervisory & Office Staff 2 0 1 0.003 .000 0.000 Engineering Staff 19 1 19 0.503 .002 0.074 Tctals Maintenance & Construction 536 0 1370 8.674 .000 172.414 Operations 470 1 256 9.926 .000 10.576 Health Physics & Lab 155 0 127 10.390 .000 8.315 Supervisory & Offic.e Staff 62 1 47 0.200 .000 0.049 Engineering Staff 253 1 200 2.775 .002 13.303 Grand Totals 1476 3 2000 31.965 .002 204.657

  • Coating repairs in all radiologically controlled areas.

. Installation of U1 steam generator inspection ports.

Pipe whip restraints removed in loop rooms

, httichment to TXX-99048 Page 19 of 19 TABLE 6.0 1998 COMANCHE PEAK STEAM ELECTRIC STATION - UNITS 1 AND 2 OUTAGE RELATED RADIATION EXPOSURE TO AN INDIVIDUAL FOR A SINGLE MAINTENANCE ACTIVITY WHICH EXCEEDS 10 PERCENT OF AN ALLOWABLE ANNUAL DOSE LIMIT

  • Individual's Maintenance Sinole Event Total Annual AstLily Department Individual's Exoosure (mrem) Exposure (mremi Nozzle Dam Westinghouse Danser 900 1882

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