HL-5628, Monthly Operating Repts for Apr 1998 for Ei Hatch Nuclear Plant

Monthly Operating Repts for Apr 1998 for Ei Hatch Nuclear Plant

ML20247F352
Person / Time
Site:	Hatch
Issue date:	04/30/1998
From:	Shannon Rogers, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5628, NUDOCS 9805190299
Download: ML20247F352 (7)

Text

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lawis Sumner Southern Nuclear l

• I Vice President Operating Company,Inc.

Hatch Project Support 40 invemess Parkway Post Office Box 1295 '  !

Birmingham, Alabama 35201 Tel 205992.7279 Fax 205.992.0341 May 11, 1998

COMPANY Enm to Serve hurWorld" Docket Nos. 50-321 l 50-366 HL-5628 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 l Edwin I. Hatch Nuclear Plant Monthly Oncratine Reports Gentlemen:

Enclosed are the April 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 requirements.

Sincerely, h

H. L. Sumner, Jr.  !

l IFLleb

Enclosures:

1. April Monthly Operating Report for Plant Haten Unit 1 l

2. April Monthly Operating Report for Plant Hatch Unit 2  !

cc: Southern Nuclear Operatine Company Mr. P. H. Wells, Nuclear Plant General Manager NORMS Ll, S. Nuclear Reentatory Commission. Washineton D. C.

Mr. L. N. Olshan, Project Manager - Hatch U. S. Nuclear Reentatorv Commission. Reelon 11 Mr. L. A. Reyes, Regional Administrator Mr. B. L. Holbrook, Senior Resident inspector - Hatch

• i.! , 4 g t Utility Data Institute. Inc.

Ms. Barbara Lewis - McGraw-Hill Companies 9905190299 980430 PDR ADOCK 05000321 i _. _ -

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Enclosure 1 L Plant Hatch Unit 1

. Monthly Operating Report April 1998

. Table of Contents P382 Operating Data Report El-1

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Unit Shutdowns and Power Reductions El-2 l

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OPERATING DATA REPORT Dociret No.: 50-321 Unit Name: E.1. Hatch Unit 1 Date: ,May 1,1998 Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878_

Opplating_ Status

1. Reporting Period: APRIL 1998

2. Design Electrical Rating (Net MWe): 822.1

3. Maximum Dependable Capacity (Net MWe): 800 IhitMonth YeaLTADate Cumulativa

4. Number of Hours Reactor Was Critical: 719.0 2,879.0 152,859.2

5. Hours Generator On Une: 719.0 2,879.0 147,444.8 l

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 575,972 2,306,830 103,399,235 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES D;te Tag No. Event Description No challenges this month.

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UNIT SHUTDOWNS Docket No.: 50-321 Unit Name: E.1. Hatch Unit 1 Date: May 1,1998 Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878 R: porting Period: APRll1998 l

l Type Method of F: Fore.o Duration Shutting Cause/ Corrective Actions No. Date e sch.ama (Hours) Reason (1) Down (2/ Comments No unit shutdowns occurred this month.

(1) Reason: (2) METHOD A-Equipment Faltare (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 1 operated at rated thermal power for the entire month of April.

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Enclosure 2 Plant Hatch Unit 2 l Monthly Operating Report  ;

Aprif 1998 l l

Table of Contents l

i Eage -!

. 1

- Operating Data Rerart E2-1  !

Unit Shutdowns and Power Reductions E2-2 i

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OPERATING DATA REPORT Docket No.: 50-366 Unit Name: E.1. Hatch Unit 2 Date: ~May 1,1998 Completed By: S. B. Rogers Telephone: (912) 367-7781 x2878 Oper.alingEtatua l

1. Reporting Period: APRIL 1998

2. Design Electrical Rating (Net MWe):

829.7  ;

i 3. Maximum Dependable Capacity (Net MWe): 818 )

Ihis. Month YeaLTADate Cumulativa

4. Number of Hours Reactor Was Critical: 719.0 2,879.0 129,723.1 S. Hours Generator On Une: 719.0 2,879.0 125,730.7

6. Unit Reserve Shutdown Hours: 0.0 0.0~ 0.0

7. Net Electrical Energy Generated: 57'6,808 2,333,231 89,145,977 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Dcte Tag No. Event Description No challenges this month.

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UNIT SHUTDOWNS Docket No.: 50-366 Unit Name: E.1. Hatch Unit 2 <

Date: May 1,1998 Completed By: CB. Rogers Telephone: (912) 367-7781 x2878 l l

R: porting Period: APRIL 1998 Type Method of F: Forced Curation Shutting Cause/ Corrective Actions No. Date s sen.u.a (Hours) Reason (1) Dov/n (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 D-Regulatory Restriction 4-Continuation E-Operator Training /Ucense Examination 5-Other (Explain)

F-Administrative G-Operational Error (Explain)

H-Other (Exp!ain)

CAUSE/ CORRECTIVE ACTION / COMMENTS:

NARRATIVE REPORT Unit 2 operated et rated thermal power for most of the month of April. Shift reduced load to approximately 485 GMWe on 4/5/98 to perform a control rod sequence exchange and to facilitate maintenance activities in condenser bay. The unit was returned to rated thermal power on 4/6/98.

Shift began reducing load on 4/19/98 after entering a Technical Requirements Manual Required Action Statement whan the M combined intermediate valve (CIV) would ne* test during the monthly operability surveillance.

Failure of M CIV to test was determined to be the result d a faulty coil on the test solenoid valve. The solenoid was replaced and M CIV was successfully tested. Shift terminated the load reduction at approximately 275 GMWe following the successful testing of M C1V. The unit was returned to rated thermal power on 4/19/98.

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