HL-5726, Monthly Operating Repts for Dec 1998 for Ei Hatch Nuclear Plant,Units 1 & 2.With

Monthly Operating Repts for Dec 1998 for Ei Hatch Nuclear Plant,Units 1 & 2.With

ML20199E464
Person / Time
Site:	Hatch
Issue date:	12/31/1998
From:	Beard R, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5726, NUDOCS 9901200429
Download: ML20199E464 (7)

Text

=_. _ . _ . _. . __ . _ _ . - . . _ _ . .- . _ _ . _ _ _ _ _ _ _ _ . , _ _ _ _ .

, l.swis Summer Southern Nuclear

. Vice President Operating Company,Inc.

Hatch Project Support 40 invemess Parkway Post Office Box 1295 Birmingham. Alabama 35201 Tel 205.992.7279  ;

Fax 205.992.0341 l SOUTHERN h l COMPANY '

l Euery to ServeYour %rld" January 12, 1999  ;

Docket Nos. 50-321 50-366 HL-5726 )

i i

~

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Edwin I. Hatch Nuclear Plant Monthly Oncratina Reports Ladies and Gentlemen: .

Enclosed are the December 1998 Monthly Operating Reports for Edwin I. Hatch Nuclear Plant Unit 1, Docket No. 50-321, and Unit 2, Docket No. 50-366. 'Ihese reports are submitted in  !

accordance with Technical Specifications 5.6.4. j l

Respectfully submitted, I

h H. L. Sumner, Jr.

M

IFIleb ,

Enclosures:

1. December Monthly Operating Report for Plant Hatch Unit 1

2. December Monthly Operating Report for Plant Hatch Unit 2 cc: Southern Nuclear Operatina Company Mr. P. H. Wells, Nuclear Plant General Manager SNC Document Management (R-Type A02.001) l 1

U. S. Nuclear Renulatory Commission. Washington D. C. I

Mr. L. N. Olshan, Project Manager - Hatch f- G, I

l U. S. Nuclear Renulatory Commission. Region II f 1

Mr. L. A. Reyes, Regional Administrator Mr. J. T. Munday, Senior Resident Inspector - Hatch s

Utility Data Institute. Inc. '- 41  ;

i Ms. Barbara Lewis - McGraw-Hill Companies I 9901200429 981231 i PDR ADOCK 05000321 R PDR l

Enclosure 1 Plant Hatch Unit 1 Monthly Operating Report December 1998 Table of Contents Eags Operating Data Report El-1 Unit Shutdowns and Power Reductions El-2

OPERATING DATA REPORT l Docket No.: 50-321 Unit Name: E. l. Hatch Unit 1 Date: 1/4/99 ~

Completed By: R. M. Beard Telephone: (912) 367-7781 x2878 Opstatingatatus 1, Reporting Period: DECEMBER 1998

2. Design Electrical Rating (Net MWe): 822.1 l 3. Maximum Dependable Capacity (Net MWe): 800 This. Month Year To Date Cumulative

4. Number of Houm Reactor Was Critical: 744.0 8,760.0 158,740.2

5. Hours Generator On Line: 744T 8,751.8 153,317.6

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 596,196 6,951,7y 108,044,157 i

CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES

Date Tag No. Event Desenption No challenges this month.

I i

I i

4 E1-1

UNIT SHUTDOWNS Docket No.: _50-321 Unit Name: E.1. Hatch Unit 1 Date: 1/4/99 Completed By: R. M. Beard Telephone: 1912) 367-7781 x2878 Reporting Period: DECEMBER 1998 f Type / Method of F- Forced Duration Shutting Cause/ Corrective Actions No. Date a smaa (Hours) Reason (1) Down (2) Comments No unit shutdowns occurred this month.

(1) Rsason: (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)

H4ther (Explain)

CAUSE/ CORRECTIVE ACTION / COMMENTS:

NARRATIVE REPORT Unit 1 operated at rated thermal power for most of the month of December. The only load reduction occurred on December 20th when shift reduced load to perform a Control Rod Pattern Adjustment.

E1-2

i l l

l t

l Enclosure 2 L

i Plant Hatch Unit 2 Monthly Operating Report December 1998 l

Table of Contents f

I l

hh I

l Operating Data Report E2-1 I

l Unit Shutdowns and Power Reductions E2-2 l l

i l

l l

i I

i i

l' '

i t

4 4

}

i i

n

OPERATING DATA REPORT Docket No.: 50-366 Unit Name: E.1. Hatch Unit 2 Date: 1/4/99 Completed By: R. M. Beard _ _

Telephone: (912) 367-7781 x2878 Opmating_ Status

1. R: porting Period: DECEMBER 1998

2. Design Electrical Rating (Net MWe): 859

3. Maximum Dependable Capacity (Net MWe): 855 IbisRonth YeaLTADate Cumulative i

4. Number of Hours Reactor Was Critical: 744.0 7,302.8 134,146.9 l

5. Hours Generator On Line: 744.0 7,247.2 130,099.0 l

6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

7. Net Electrical Energy Generated: 657,817 5,823,426 92,636,172 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Dat2 Tag No. Event Desenption No challenges this month.

E2-1

~ _ - _ - .- -.. _ .. . - -. . . . _ _ __ _-. . - . ..

l

.e

~

UNIT SHUTDOWNS Docket No.: _50-366 Unit Name: E.1. Hatch Unit 2 Date: _1/4/99 Completed By: R. M. Beard Telephone: '(912) 367-7781 x2878 Reporting Period: DECEMBER 1998 I l

Type Method of i F; Ferr.ee Duration Shutting Cause/ Corrective Actions l

No. Date s sen.d a (Hours) Reason (1) Down (2) Comments No unit shutdowns occurred this month.

l i

b l

l (1) Reason: (2) METHOD l

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

)

l G-Operational Error (Explain)

H-Other(Explain) )

l J

l CAUSE/ CORRECTIVE ACTION / COMMENTS:

NARRATIVE REPORT Unit 2 began the month of December operating at reduced load while the "C" Cooling Tower was out of service to f:cilitate removal of damaged fill material. The tower was returned to service December 1st and the unit returned l to cperation at 2686 CMWt. Shift personnel reentered the Extended Power Uprate Test Procedure on December .

2nd and increased unit thermal power to 2708 CMWt. Shift briefly reduced load on December 5th to perform I Turbine Stop Valve and Combined Intermediate Valve Testing. The next load reduction occurred on December I 8th when an air line leak caused the low level control valvo for the 8th Stage "B" Feedwater Heater to fait closed I resulting in a heater level transient in several feedwater heaters. The air line leak was repaired, proper operation of feedwater heater level restored and the unit returned to operation at 2708 CMWt within a couple of hours. Shift j briefly reduced load on the 19th and 26th of December to ensure thermal limit margins while performing Control Rod Drive Exercises and on 23rd to backwash and precoat the "D" Condensate Demineralizer Vessel. Otherwise, operation was maintained at 2708 CMWt for the month of December.

i E2-2