HL-5818, Monthly Operating Repts for July 1999 for Ei Hatch Nuclear Plant,Units 1 & 2.With

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

ML20210R612
Person / Time
Site:	Hatch
Issue date:	07/31/1999
From:	Shannon Rogers, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5818, NUDOCS 9908170165
Download: ML20210R612 (7)

Text

{{#Wiki_filter:. i tswis Swanor Southern Nuclear

   .               Vice President            Operating Company,Inc.

Hatch Project Support 40 invemess Parkway Post Office Box 1295 Birmingharn. Alabama 35201 Tel 205.992.7279 Fax 205992.0341 SOUTHERN h COMPANY Energy to Sern hurWorld* Docket Nos. 50-321 50-366 HL-5818 1 U.S. Nuclear Regulatory Commission A1TN: Document Control Desk i Washington, D. C. 20555 Edwin 1. Hatch Nuclear Plant M_ onthly Operatina Reports Ladies and Gentlemen: Enclosed are the July 1999 Monthly Operating Reports for Edwin 1. Hatch Nuclear Plant Unit 1, ) Docket No. 50-321, and Unit 2, Docket No. 50-366. These reposts are submitted in accordance with Technical Specifications 5.6.4. Respectfully submitted, ecdo H+

11. L. Sumner, Jr.

IFUeb

Enclosures:

1. July Monthly Operating Report for Plant Hatch Unit 1

2. July Monthly Operating Report for Plant Hatch Unit 2 cc: Southern Nuclear Onerating Company Mr. P. H. Wells, Nuclear Plant General Manager SNC Document Management (R-Type A02.001)  !

U. S. Nuclear Renulatory Commission. Washington D. C. Mr. L. N. Olshan, Project Manager - Hatch U. S. Nuclear Regulatory Commission. Recion 11 l  ; Mr. L. A. Reyes, Regional Administrator Mr. J. T. Munday, Senior Resident Inspector - Hatch y -{l g Utility DataInstitute Inc. Ms. Barbara Lewis - McGraw-Hill Companies . I

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Enclosure 1 3

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Plant liatch Unit 1 Monthly Operating Report July 1999 Table of Contents i Eags Operating Data Report El-1 Unit Shutdowns and Power Reductions El-2

              =

OPERATING DATA REPORT

                      ,                                                             Docket No.: 50-321 Unit Name:    ~n.1. Hatch Unit 1 Date: August 3,1999 Completed By:    E .BRogers Telephone: j912) 367-7781 x2878 OpmalingStajus

1. Reporting Period: JULY 1999

2. Design Electrical Rating (Net MWe): 8_64.6

3. Maximum Dependable Capacity (Net MWe): 838 This.Monib YeaLTADate Cumulative

4. Number of Hours Reactor Was Critical: 744.0 3,749.7 162,490.0

5. Hours Generator On Line: 744.0 3,480.7 156,798.3

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 620,698 2,761,146 110,805,303 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date Tag No. Event Desenption No challenges this month.

E1-1

r- j UNIT SHUTDOWNS

                 ,                                                                     Docket No.: 50-321 Unit Name:    E. l. Hatch Unit 1 l Date: August 3,1999       l Completed By: S. B. Rogers          l Telephone: 1912) 367-7781 x2878 Reporting Period:             JULY 1999 Type                       Method of F. Fose.d  Duration             Shutting   Cause/ Corrective Actions                           l No. Date   a m.ama    (Hours)  Reason (1)  Down (2)   Comments No unit shutdowns occurred this month.

(1) Reason: (2) METHOD A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram 1 D-Regulatory Restriction 4-Continuation E-Operator Training / License Examination 5-Other (Explain) ' F-Administrative G-Operational Error (Explain) H-Other (Explain) l CAUSE/ CORRECTIVE ACTION / COMMENTS: , i NARRATIVE REPORT Unit 1 began the month of July operating at approximately 98.5% of rated thermal power. Over the course of the month, minor load reductions were performed during hot weather to ensure circulating water system parameters were maintained within pre-established guidelines and allow for the monitoring and evaluation of summertime operation at extended power uprate conditions. Shift reduced load to approximately 650 GMWe on 7/12/99 when vacuum in the main condenser began decreasing, investigation revealed the inlet valve to the "A" Offgas Preheater had failed cic> sed. The valve was reopened and the unit was returned to approximately 2635 CMWT later the same day. Shi.1 reduced load to approximately 600 GMWe on 7/24/99 to perform a control rod sequence exchange, scram time testing, turbine control valve testing, and control rod drive exercises. The unit was returned to 2680 CMWT on 7/25/99. Shift increased reactor power to 2690 CMWT on 7/27/99 and to 2700 CMWT on 7/30/99. Shift continued to maintain approximately 98% of rated thermal power for the remainder of the month. E1-2

F..

              ,                                   Enclosure 2 Plant Hatch Unit 2 Monthly Operating Report July 1999 Table of Contents P_ ass Operating Data Report                               E2-1 Unit Shutdowns and Power Reductions                 E2-2

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OPERATING DATA REPOR1 i i Docket No.: 50-366 Unit Name: ~n.1. Hatch Unit 2 Date: August 3,1999 Completed By: S. B. Roger _s Telephone: (912) 367-7781 x2878 1 OpstatingEtatus

1. Reportiag Period: JULY 1999

2. Design Electrical Rating (Net MWe): 859

3. Maximum Dependable Capacity (Net MWe): 855 ThitMonth YeaLTD_ Dale CumulatiVD

4. Number of Hours Reactor Was Critical: 744.0 4,675.0 138,821.9

5. Hours Generator On Line: 744.0 4,500.8 134,599.8

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 642,066 3,853,341 96,489,513 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Dite Tag No. Event Description No challenges this month.

l l E2-1

4 UNIT SHUTDOWNS

                   .                                                                       Docket No.: 50-366 Unit Name:    E.1. Hatch Unit 2 Date: August 3.1999 Completed By: ' STB. Rogers Telephone: (912) 367-7781 x2878 R: porting Period:            JULY 1999 Type                        Method of F: Forced   Duration             Shutting   Cause/ Corrective Actions No. Date    e.samuw     (Hours)  Reason (1) Down (2)    Comments No unit shutdowns occurred this month.

(1) Reasors: (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) CAUSE/ CORRECTIVE ACTION / COMMENTS: 1 NARRATIVE REPORT l Unit 2 began the month of July at approximately 40% of rated thermal power with ascension to 2708 CMWT in i progress. The unit attained 2708 CMWT late in the day on 7/1/99. Shift reduced load to approximately 830 ' l GMWe on 7/2/99 to perform a rod pattern adjwaent. The unit was returned to 2708 CMWT la'er the same day. Shift reduced load to approximately 675 GMWe on 7/18/99 to perform a control rod sequence exchange and turbine control valve testing. The unit was returned tc 2708 CMWT later the same day. Shift reduced load to approximately 877 GMWe on 7/22/99 due to increasing circulating water temperature and decreasing vacuum in the main condenser. Shift returned the unit to 2708 CMWT on 7/23/99. Shift continued to maintain cpproximately 2708 CMWT for the remainder of the month. E2-2 I I}}