ML20135D320

Annual Operating Rept for 1996, Per RG 1.16,Rev 4,Part C.1.b

ML20135D320
Person / Time
Site:	Grand Gulf
Issue date:	12/31/1996
From:	Hagan J ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-REGGD-01.016, RTR-REGGD-1.016 GNRO-97-00009, GNRO-97-9, NUDOCS 9703050195
Download: ML20135D320 (9)

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. Entergy Operations,Inc.

O / P.O. Box 756 O Port Gibson, MS 39150 Tel 601437 6408 Fax 601437 2795 Joseph J. Hagan Vice Presdent February 25, 1997 $[E'jmuciear stanon i

U.S. Nuclear Regulatory Commission Mail Station P1-137 Washington, D.C. 20555 Attention: Document Control Desk

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-29 1996 Annual Operating Report GNRO-97/00009 Gentlemen:

• Entergy Operations, Inc. is transmitting the Grand Gulf Nuclear Station (GGNS)

Unit 1 Annual Operating Report for 1996. This report is in accordance with the reporting program described in Regulatory Guide 1.16, Revision 4, Part C.1.b as '

modified by the NRC letter to GGNS dated May 25,1987 (MAEC-87/0131).

Provided as attachments are:

1. A narrative summary of operating experience during the year 1996,

2. Main Steam Line Safety Relief Valve challenges,

3. A tabulated annual report of personnel exposure greater than 100 mrem /yr, and

4. A summary of failed fuel indications /inspecilons.

Yours truly, JJH/CWG '

attachments Cfk, ,

cc: (See Next Page)

! 9703050195 961231 l

' PDR ADOCK 05000416 R PDR u 050017 i pp ,,,,,,,,,,

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.. February 25, 1997-GNRO-97/00009 Page 2 of 3 cc: Mr. D. C. Hintz (w/a)

Mr. R. B. McGehee (w/a)

Mr. N. S. Reynolds (w/a)

Mr. H. L. Thomas (w/o)

Ms. K. Weaver (w/a)

Mr. Leonard J. Callan (w/a)

Regional Administrator U.S. Nuclear Regulatory Commission Region.IV 611 Ryan Plaza Drive Suite 400 Arlington, TX 76011 Mr. Jack Donohew, Project Manager Offica of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 13H3 ,

Washington, D.C. 20555 >

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Attachment I to GNRO-97/00009 i Pap i d t I

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SUMMARY

OF OPERATING EXPERIENCE 1996 l The following is a summary of Grand Gulf Nuclear Station (GGNS) Unit 1 operating j experience for the 1996 calendar year. During 1996, the reactor was critical for  !

7,788.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> with the generator on line for 7,698.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.  ;

On 2/13/96, reactor power was reduced to approximately 60% for control rod  !

sequence exchange. Duration hours - 0 j On 4/06/96, reactor power was reduced to approximately 70% for control rod . j sequence exchange.- Duration hours - 0 l l

On 10/20/96, the reactor was shut down for Refueling Outage No. 8. Duration i hours - 769.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> l

On 11/21/96, an extension of the scheduled refueling outage to complete  ;

scheduled work. Duration hours - 227.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> l

On 11/30/96, the main generator was taken off line at reduced power for a turbine j overspeed trip test. Duration hours - 1.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> i

On 11/30/96, the main generator was taken off line at reduced power to retry the .j turbine overspeed trip test. Duration hours - 2.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> On 11/30/96, the main generator was taken off line at reduced power to complete --

the turbine _overspeed trip test. Duration hours - 1.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> On 12/02/96, the core thermal power was reduced to approximately 15% to trip  !

turbine for repairing crack on stub tube for 1N11 FX301 (isolation valve for an HP  ;

Turbine 1st-stage pressure transmitter). Duration hours - 10.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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l Attachment 11 to GNRO-97/00009 Page 1 of 2 i

l MAIN STEAM SAFETY RELIEF VALVE CHALLENGES 1996  ;

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This section contains a summary of main steam line safety relief valve challenges )

which occurred during 1996 as reported in the GGNS Monthly Operating Report for i that period. l l

This summary was originally included in the following monthly report:

June 1996 Report -

GNRO-96/00081 -

dated July 15.1996 l

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Attachment ll to GNRO-97/00009 Page 2 of 2 MAIN STEAM SAFETY RELIEF VALVE CHALLENGES 1996 I

I Docket No. 50-416 1

Unit 1 Completed By C. W. Gunn Telephone (601 437-2396 Date of Occurrence: June 6,1996 i Plant Operating Condition:

Rx Thermal Power 100% Rx Pressure (psia) 1044.7 Rx Mode 1 9x Power (MWE) 1269 Rx Temperatures 540F l Number of main steam line SRVs: 20 Number of SRVs affected by event:  !._

Narrative: l On June 6,1996, GGNS experienced an opening of six Main Steam Safety / Relief Valves (SRV) which resulted in an increase in suppression pool temperature. The ]

reactor was manually scrammed by control room operators before temperature  ;

limits were reached.

The following SRVs actuated:

F051D F051B F047D F047G F051A F051F

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l Attachm:nt 111 to GNRO-97/00009 Page 1 of 4 i I

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GGNS UNIT 1 ANNUAL REPORT MAN-REM EXPOSURE - 1996 l

i I This section contains a tabulation of the number of station, utility and other l personnel receiving exposures greater than 100 mrem / year and their associated )

man-rem exposure according to work and job function. Also is included is a tabulation of the number of personnel by exposure range.  :

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- Attachraent III to GNRO-97 /00009 . , ,

Grand Gulf Nuclear Station -

age 2'Of 4L - Date: 14-FEB-1997 08:15

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, P.O.. Bon 756 .

Port Gibson, MS 39150 a v LICENSE: NPF-2 ,

Regulatory Guide 1.16 Information .

End of Year Report 1996 Number of Personnel

> 100 mrem Total man-rem

• Work and Job Function Station Utility Contractor Station Utility Contractor . '

ROITTINE OPERATIONS AND SURVEILLANCE '

MAINTENANCE AND CONSTRUCTION O O 1 0.675 0.045 0.342 OPERATIONS 12 2 0 3.126 0.378 0.000 l HEALTH PHYSICS ~ 11 14 19 3.427 5.975 8.759 SUPERVISORY 1 1 0 0.522 0.259 0.245 -

ENGINEERING 0 0 0 0.069 0.000 0.059 l t

ROUTINE PLANT MAINTENANCE _ . i' MAINTENANCE AND CONSTRUCTION 128 54 358 55.097 18.263 153.234 OPERATIONS 50 2 ~5 19.625 0.464 3.155' HEALTH PHYSICS 28 5 '21 11.617 1.429 5.794 l SUPERVISORY 12 3 21 4.446 1.184 4.653 ENGINEERING 16 3 0 5.176 1.071 0.024 [

INSERVICE INSPECTION MAINTENANCE AND CONSTRUCTION O O 24 0.004 0.000 7.136 I OPERATIONS 0 0 0 0.000 0.000 0.000 [

HEALTH PHYSICS O O O _0.003 0.000 0.079  ;

' SUPERVISORY 3 2 11 0.642 0.476 7.482  !

ENGINEERING 1 0 0 0.316 0.000 0.000 SPECIAL PLANT MAINTENANCE .

MAINTENANCE AND CONSTRUCTION O O O 0.000 0.000 0.000 -

OPERATIONS 0 0 0 0.000 0.000 0.000 ,

HEALTH PHYSICS 0 0 0 0.000 0.000 0.000

! SUPERVISORY 0 0 0 0.000 0.000 0.000' i

ENGINEERING 0 0 0 0.000 0.000 0.000 .

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Attachment III to GNRO-97/00009 .

Page 3 of 4 Regulatory Guide 1.16 Information .

End of Year Report 1996 Number of Personnel -

> 100 mrem Total man-rem

• Work and Job Function Station Utility Contractor Station Utility Contractor WASTE PROCESSING MAINTENANCE AND CONSTRUCTION O O 1 0.122 0.000 0.384 OPERATIONS 0 0 5 0.000 0.000 1.004 HEALTH PHYSICS 0 0 0 0.050 0.000 0.047 SUPERVISORY 0 0 0 0.000 0.000 0.000 ENGINEERING 0 0 0 0.000 0.000 0.000 REFUELING MAINTENANCE AND CONSTRUCTION O 1 45 0.198 0.509 12.822 OPERATIONS 2 0 0 0.690 0.091 0.000 HEALTH PHYSICS 0 0 0 0.003 0.011 0.036 SUPERVISORY 2 2 2 0.735 0.778 0.345 ENGINEERING 4 0 0 1.246 0.056 0.043 Totals MAINTENANCE AND CONS 1'RUCTION 128 55 429 56.096 18.917 173.918 OPERATIONS 64 4 10 23.441 0.933 4.159 HEALTH PHYSICS 39 19 40 15.100 7.415 14.715 SUPERVISORY 18 8 34 6.345 2.697 12.725 ENGINEERING 21 3 0 6.807 1.127 0.126 Grand Totals 270 89 513 107.789 31.089 205.643

• The total radiation exposure of the above personnel constitutes 100% of the site's exposure for the year.

l Attachm:nt 111 to GNRO-96/00009 Page 4 of 4 SPECIAL MAINTENANCE ACTIVITIES There were no special maintenance activities in 1996 that resulted in exposure greater than 100 mrem.

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Attachment IV to GNRO-97/00009 Page1of1 FAILED FUEL INDICATIONS / INSPECTIONS - 1996 Failed fuel assessments performed during Cycle 8 indicated a single, medium-sized fuel failure existed in the Grand Gulf core.

The failure occurred on 9/9/95. Fuel Reliability Index peaked at 3061 pCi/sec and leveled at about 1000 pCi/sec.

The failure was in a second cycle bundle in core cell location 32-27. This cell contained two second cycle bundles. Both of these bundles were discharged during RFO8 (October 1996). Inspections of the bundles were unable to assign a root cause of the failure.

Cycle 9 startup and steady-state data indicate there are no fuel failures in the Grand Gulf core.

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