HL-5675, Monthly Operating Repts for Aug 1998 for Ei Hatch Nuclear Plant,Units 1 & 2

Monthly Operating Repts for Aug 1998 for Ei Hatch Nuclear Plant,Units 1 & 2

ML20197C258
Person / Time
Site:	Hatch
Issue date:	08/31/1998
From:	Shannon Rogers, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5675, NUDOCS 9809110078
Download: ML20197C258 (7)

Text

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4

.. Lewis Sumner Southern Nuclear

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• Vice President Operating Company,Inc.

Hatch Project Support 40 invemess Parkway Post Offee Box 1295 Birmingham. Alabama 35201 Tel 205 992.7279 4

Fax 205.992.0341 SOUTHERN L ,

COMPANY September 4, 1998 Energy to Serve YourWorld*

Docket Nos. 50-321 50-366 HL-5675 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Edwin I. Hatch Nuclear Plant Monthly ODeratine ReDOrtS Gentlemen:

Enclosed are the August 1998 Monthly Operating Reports for Edwin I. Hatch Nuclear Plant 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.

Sincerely, h h H. L. Sumner, Jr.

IFLleb

Enclosures:

/

1. August Monthly Operating Report for Plant Hatch Unit 1

2. August Monthly Operating Report for Plant Hatch Unit 2

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cc: Southern Nuclear Operatine Company Mr. P. H. Wells, Nuclear Plant General Manager SNC Document Management (R-Type A02.001) 7g U. S. Nuclear Rezulatorv Commission. Washington D. C.

Mr. L. N. Olshan, Project Manager - Hatch U. S. Nuclear Rezulatorv Commission. Region 11 Mr. L. A. Reyes, Regional Administrator Mr. J. T. Munday, Senior Resident Inspector - Hatch Utilitv Data Institute. Inc.

Ms. Barbara Lewis - McGraw-Hill Companies 9809110078 900831 F PDR ADOCA 050003214 R PDR;

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Enclosure 1

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Plant Hatch Unit 1 Monthly Operating Report August 1998

.i Table of Contents e t

Page Operating Data Report El-1 Unit Shutdowns and Power Reductions El-2 S

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OPERATING DATA REPORT

, , Docket No.: 50-321 _ _

Unit Name: E. I. Hatch Unit i Date: September 1,1998 Completed By: _S. B._R.ogers Telephone: (912) 367-7781 x2878 Operating Status 1 Reporting Period: AUGUST 1998

2. Design Electrical Rating (Net MWe): 822.1 l 3, Maximum Dependable Capacity (Net MWe): 800 j

1 This Month Yea 10::te Cumulative 1

4. Number of Hours Reactor Was Critical: 744.0 5,831.0 155,811.2 ,

5. Hours Generator On Line: 744.0 5,831.0 150,396.8 1

6. Unit Reserve Shutdown Hours: 6.~6~ 0.0 OTO~ )

7. Net Electrical Energy Generated: 583332' 4,63'53T3~ ~T65,72K6i8~ l l

CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES {

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Date i Tag No. Event Desenption No challenges this month. l I

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UNIT SHUTDOWNS

, . Docket No.: 50-321 _

Unit Name: E. l. Hatch Unit 1 Date: September 1,1998 Completed By: S _ B _R_ogers .._ .

Telephone: (912] 367-7781 x28_78, Reporting Period: AUGUST 1998 Type M i ethod of F. Forced Duration -  ! Shutting Cause/ Corrective Actions No. Date s. set.6ma Comments (Hours)_ Reason (1){ Down (2) l

{

i No unit shutdowns occurred this month.

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

F-Administrative G-Operational Error (Explain)

H-Other (Explain) l CAUSEICORRECTIVE ACTION / COMMENTS: l l

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NARRATIVE REPORT ,

j Unit 1 operated at rated thermal power for most of the month of August. Shift reduced load to approximately 595 GMWe on 8/9/98 to perform a control rod sequence exchange, scram time testing, turbine control valve testing, and inspection and replacement of selected servo-strainers in the turbine Electro-Hydraulic Control System.

Inspection activities were also performed in the condenser bay while at reduced load. The unit was returned to rated thermal power later that day.

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Enclosure 2 ~

i Plant Hatch Unit 2 ,

Monthly Operating Report Aunust1998 Table of Contents b

Page t

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

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OPERATING DATA REPORT Docket No.: 50:366 .

Unit Name: E. I. Hatch Unit 2 Date: Sept _ ember 1,1998 Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878 Operating. Status

1. Reporting Period: _ AUGUST 1998

2. Design Electrical Rating (Net MWe): 829.7

3. Maximum Dependable Capacity (Net MWe): 818 This Month Year _To Date Cumulative

4. Number of Houm Reactor Was Critical: 744.0 5,831.0~

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132,675.1

5. Hours Generator On Line: 74T0' 5',831:0 128382Y

6. Unit Reserve Shutdown Hours: Os OTO~ 01

7. Net Electrical Energy Generated: _

591,173 4,681,581 91,494,327 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date 1 Tag No. j Event Desenption i No challenges this month.

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UNIT SHUTDOWNS

. . Docket No.: 50-366 Unit Name: E. l. Hatch Unit 2 Date: SUtemb_e_r 1,1998-Completed By: .S. B._ Rogers _ _

Telephone: (912) 367-7781 x2878_

Reporting Period: AUGUST 1998 Type  ! Method of :

F Forced Duration j Shutting Cause/ Corrective Actions No. Date s. sen.au (Hours) 1 Reason (1). Down (2)

Comments i

l 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)

CAUSE/ CORRECTIVE ACTION / COMMENTS:

NARRATIVE REPORT Unit 2 operated at rated thermal power until 8/7/98 when Shift inserted control rod 22-15 to the " full in" position to facilitate the replacement of both scram pilot solenoid valves on the associeted hydraulic control unit. The Insertion of this rod resulted in a reduction of thermal power to approximately 98%. Shift reduced load to approximately 685 GMWe later that day, to perform scram time testing on control rod 22-15. The unit was returned to rtted thermal power on 8/8/98. Shift maintained operation at rated thermal power until 8/20/98 when the unit entered End of Cycle Coastdown. Shift removed the "B" 4th stage feedwater heater from service on 8/30/98 for Final Feedwater Temperature Reduction and maintained maximum achievable thermal power for the remainder of the month.

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