HL-5755, Monthly Operating Repts for Feb 1999 for Ei Hatch Nuclear Plant,Units 1 & 2.With

Monthly Operating Repts for Feb 1999 for Ei Hatch Nuclear Plant,Units 1 & 2.With

ML20204B694
Person / Time
Site:	Hatch
Issue date:	02/28/1999
From:	Shannon Rogers, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5755, NUDOCS 9903220212
Download: ML20204B694 (7)

Text

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'. Lewis Sanner Southern Naclear -

,, Vice President Op. rating Cesapesy, lac. l Hatch Project Support 40 invemess Parkway  !

Post DJice Box 1295 l Birmingharn, Alat,ama 35201

- -' Tel 205.992.7279 Fax 205.992.0341 SOUTHERN JL- I COE.'ANY Energy ro Serve YourWorld"  ;

March 15, 1999  !

Docket Nos. 50-321 50-366 HL-5755 U.S. Nuclear Regulatory Commission s ATTN: Document Control Desk i Washington, D. C. 20555 i Edwin I. Hatch Nuclear Plant Monthly Opiratina Reports rt l I

Ladies and Gentlemen:

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Enclosed are the February 1999 Monthly Operating Reports for Edwin f. Hatch Nuclear Plant l Unit 1, Docket No. 50-321, and Unit 2, Docket No. 50-366. These reports are submitted in accordance with Technical Specifications 5.6.4.

RespectAilly submitted, 84 (4nve%

H. L Sumner, Jr.

IFL/eb

Enclosures:

1. February Monthly Operating Report for Plant Hatch Unit 1

2. February Monthly Operating Report for Plant Hatch Unit 2 cc: Southern Nuclear Or.gratina Comnany Mr. P. H. Wells, Nuclear Plant General Manager SNC Docun ent Management (R-Type A02.001) ll.f. Nuclear R.caulatory Commission. Washingt_on D. C.

Mr. L. N. Olshan, Project Manager - Hatch U. S. Nucicar Renujatory Commission. Renion 11 I Mr. L. A. Reyes, Regional Administrator -[h, ,

Mr. J. T. Munday, Senior Resident inspector - Hatch y Utility Data Institute. Inc.

Ms. Barbara Lewis - McGraw-Hill Companies 000011 99CG220212 990229 I PDR ADOCK 05000312 -

R FDR  ;

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Enclosure i Plant Hatch Unit 1 Monthly Operating Report February 1999 Table of Contents Page Operating Data Report El-1 Unit Shtedowns and Power Reductions E l-2 1

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OPERATING DATA REPORT Docket No.: 50-321 Unit Name: 's. l. Hatch Unit 1 4

Date: _M_ arch 2,1999 Completed By- S. B. Rogers

. Telephone: (912) 367-7781 x2878 Operating _ Status

1. Reporting Period: FEBRUARY 1999

2. Design Electr! cal Rating (Net MWe): 822.1

3. Maximum Dependable Capacity (Net MWe): 787 Ibis]Aonth . Year _TaDate Curnulative

4. Number of Hours Reactor Was Critical: 672.0 1,416.0 160,156.2

5. Hours Generator On Line: 672.0 1,416.0_ 154,733.6

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 532,623 1,127,051 109,171,208 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date Tag No. Event Description ,

1 No challenges this month.

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4 UNIT SHUTDOWNS Docket No.: _50-321 Unit Name: E. I. Hatch Unit 1 Date: March 2,1999 Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878_

Reporting Period: FEBRUAP,Y 1999 Type Method of F: Forced Ouration Shutting Cause/ Corrective Actions No. Date s. sen.ouw (Hours) Reason (1) Down (2) Comments '

No unit shutdowns occurred this month. ,

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I (1) Reason: (2) METHOD A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation E-Operator Training / License Examination 5-Other (Explain)

F-Administrative G-Operational Error (Explain) )

H-Other (Explain) l CAUSE/00RRECTIVE ACTION / COMMENTS: 1 i l l

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( NARRATIVE REPORT Unit 1 operated at rated thermal power until 2/28/99 when Shift began reducing load for a unit shutdown to start the 18th Refueling Outage. Shift continued the load reduction with the Unit at approximately 115 GMWe et the end of this reporting period.

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Enclosure 2 d

Plant Hatch Unit 2 Monthly Operating Report February 1999 Table of Contents Page

Operating Data Report E2-1 Unit Shutdowns and Power Reductions E2-2 l

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OPERATING DATA REPORT i

l Docket No.: 50-366 Unit Name: E.1. Hatch Unit 2 Date: March 2,1999 l

Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878 OperatlogJiatus

1. Reporting Period: FEBRUARY 1999

2. Design Electrical Rating (Net MWe): 859

3. Maximum Dependable Capacity (Net MWe): 855 IhitMonth Yearlo_Date cumulative

4. Number of Hours Reactor Was Critical: -

648.2 1,308.2 135,455.1

5. Hours Generator On Line: 609.0 1,269.0 131,368.0

6. Unit Reserve Shutdown Hours: 0.0~ 0.0 0.0

7. Net Electrical Energy Generated: 522,022 1,096,652 93,732,824 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date Tag No. Event Description No challenges this month.

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i UNIT SHUTDOWNS Docket No.: 50-366 Unit Name: E. l. Hatch Unit 2 Date: March 2,1999 l Completed By: S. B. Rogers Telephone: (912) 367-7781 x2678 l

Reporting Period: FEBRUARY 1999 Type Method of F Forced Ouration Shutting Cause/ Corrective Actions No. Date a sce.ama (Hours) Reason (1) Down (2) Comments i 99-001 990128 S 63.0 B 4 Activities associated with the safety relief valves (SRV) maintenance outage continued.

j Grounds were located in the power cables to the "C" and "K" SRV solenoids. The grounds occurred due to improper routing of the power

• See continuation below.

(1) Reason: (2) METHOD A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation l E-Operator Training / License Examination 5-Other (Explain) 1 F-Administrative G-Operational Error (Explain)

H-Other (Explain)

CAUSE/ CORRECTIVE ACTION / COMMENTS:

• cables. The cables were exposed to excessive heat resulting in degradation of the electricalinsulation.

The conduits and power cables to the "C" and "K" SRVs were replaced. The cables for the remaining SRVs were checked and none were found damaged. The drawings used to inspect the installation are being revised to schematically show proper routing of the power cables and add a caution that the conduit must not contact uninsulated metal or be covered by insulation.

l NARRATIVE REPORT Unit 2 began the month of February in a maintenance outage to repair electrical grounds on the "C" and "K" safety relief valves. Shift tied the main generator to the grid on 2/3/99 and began ascension to 2708 CMWT.

The power ascension was stopped at approximately 95% of rated thermal on 2/5/99 due to thermal limits.

Shift reduced power to approximately 75% of rated thermal later that day to perform a Rod Pattern Adjustment. The unit attained 2708 CMWT on 2/6/99. Shift continued to maintain operation at approximately 2708 CMWT for the remainder of the month.

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