ML20010C166

Forwards Monthly Operating Rept for Jul 1981

ML20010C166
Person / Time
Site:	Hatch
Issue date:	08/10/1981
From:	Manry M GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
PM-81-677, NUDOCS 8108190210
Download: ML20010C166 (1)

Text

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Georgia Power company Post Office Box 442 Baxley, Georgia 31513 Telephone 912 367-6686 912 367-7781 b

Edwin I, Hatch Nuclear Plant . Georgia Power tre sou'fmrn e4ttnc system August 10, 1981 PM-81-677

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PLANT E. I. IIATCII [

NRC Monthly Operating Report i_

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Director Office of Inspection and Enforcement 1

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United States Nuclear Regulatory Commission , d' j I)

Washingtca, D. C. 20555 ci, e/

Dear Sir:

Per Tech Specs section 6.9.1.6 please find attached the NRC Monthly Operating Report for Hatch Unit 1, Docket #50-321.

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/ I l 8108190210 810810'.

PDR ADOCK 05000321 R PDR y ( -3.1

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. OPEF AT IHL 0(,; A FEP0FT DOEKET H0 50-321 J'-

DwTE 08-19-81 C 0!1P L ET ED BY DENVCF G AT403D TELEPHONE ( 912 ) 367-7781 x 203 J PPEgst!HG Ofn!C5 e e v e *

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• Notes

• J t'n et H s r. e ? E.I Hatch Huclear Plant unet 1 * *

F epor t.ng Per.cd: ** ? - 61 e e T. Licersed Thermal Power (NWt): 2434 *

• j 4 Haneriste P e t n r. g tGrors MWe)r 909.3 . =

$ Deregn Electr,cc! F ut.ng ( Net MWe): 777.3

• +

+ . fM < i n um D e p e n ds tr i e Ccpacity (Crorr MWe ): 796.3 *

• j' 7 I's r e n a a Derendqble Cspccety (Net MHer 756 8 *******************************++s++**+++++*++=*******+

t if Change: Oc:ur in C4poc it y Ratings tItems Number 3 Through 7) S i r.c e Lart Peport, Cive Reasonst

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-3 . Fower Level To Which Restricted, If kny (Het MWe) 1 :. F. e c r o n s For Gertrictions, If Any: j.

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This P' o n t h Yr.-to-Date Cumulat>we -

11 Hours In Peperting Fer,od 744 5087 48935 v 12. Hanber Of Hours Peactor Was Critic.1 720.7 2505 2 36o17 2 .

13 Feseter Peserve Shutdown Hours 0,0 0.0 0 0 ~

14 Hours Generator On-tine 707.8 2147.8 33593.2

-15 Unit cerer ve Shutdown Hours 0.0 9,0 0.0 ~

!6. Gearr T her ns t Energy Generated (MuH) 156608e 4234915 7 ei o 3 7 7 9 7

!? Genry Electriccl Energy Generated (MWH) 503346 1376610 22676260 s* 12 14 e t Electricci Energy Generated (MWH) 485d84 1288469 21540947 ~

19. tenit Service Factor 95.1 42 2 63 6 2^. Unit hveilotility Fa ct or 95.1 42.2 63,6 11 f*r i t Copucity Factor (Using MDC Net) B 6. 2 33.5 Se 2

• 12 Unit Capacity Factor ( Usi ng DER Het ) S3.9 32.6 56 6 23 Ifn et Forced Dutcge Pste 4.9 19.'5 20 1 y 4 Shutdowns Scheduled Over Hext 6 Months ( Type, Date, and Duration of Eoch):

v 25 ff Mut D wr, wt End Of Report Period, Ertinated Date of Startupt .

2s. Unite In Tert Sta tus ( Frior to Connercial Operation >t Forecast Achieved y IN!TInl CPITICALITY .. ......_____. .. ._.____.....

INITinL ELECTFICITY , ___ ,_

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1 50-321

' DOCKET NO. ,

UNIT S!iUTDOWNS AND POWER REDUCTIONS UNIT NAME Hatch 1 DATE 8-10-81 COMPLETED BY D. G. Atwood REPORT MONT11 Julv TELEPIIONE 912-%7-7R51 e.

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,E g 3 j .Yi Licensee E-s;, Cause & Corrective No. Date g 3g s .8 s 5 Event 3, g K'8 gU Action to H j= 5 j ;g g Report # mU g Prevent Recurrence 8

81-49 810701 F 6.7 A 5 81-066 CB PUMP XX "A" and "B" Recirc pumps tripped.

81-50 810702 S 31.5 B 5 NA .RB 00NROD Decrease in power for control rod pat-tern adjustment

! 81-51 810706 F 27.6 H 3 81-068 CC INSTRU Auto scram on full Grp. I isolation /

J Ibrb. Bldg. Steam Tunnel Hi Tenp.

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, 81-52 810707 F 8.6 H 3 81-072 CC INSTRU Auto scram on full Grp. I isolatien/

conds sor vacuum switches were valved out when node switch went to "RUN" 81-53 810708 F 41.2 H 5 NA CC INSTRU Startup from scram #81-51 and 81-52.

81-54 810710 F 25.0 B 5 NA CH VALVEX Power reduction to repair W Heater leck Valve.

i 1 2 3 4 F: Forced Reason: Method: Exhibit G-Instructions S: Scheduled A-Equipment' Failure (Explain) 1-Manual for Preparation of Data

.g 2-Manual Scram. Entry Sheets for Licensee B-Maintenance or Test C. Refueling 3-Automatic Scram. Event Repart (LER) File (NUREG.

D Regulatory Restriction '4 -Continuations 01611 E. Operator Training & License Examination 5-Ioad Feduction F-Administrative 9 -Other (Explain) S Exhibit I- Same Source

, G-Operational Error (Explain)

,  ; (9/77) 11-01her (Explain)

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.l, 50-321 DOCKET NO. .

UNIT SliUTDOWNS AND POWER REDUCTIONS UNIT N AME hatch 1

• DATE 8-10-81

• July COMPLETED BY D. G. Arunod REPORT MONTTI TELEPHONE 012 '367-7851 5 E

,5g "l; _*Y3 Licensee E-r, ja. - C:use & Corrective No. Date g 3g 5 is$ Event g7 g3 Action to mO O H

$E 5 3gg, Report

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Prevent Recurrence O

81-55 810712 F 16.9 B 5 NA WA FILTER Power decrease due to stopped up Plant i Service Water Strainers

{ 81-56 810715 S 2 B 5 NA 'HF FILTER Load reduction to clean cire water screens i 81-57 810718 S 6.7 B 5 NA HA TURBIN f.nad reduction to paform weekly tur-bine test.

81-58 810722 F 4.8 B 5- NA WA FILTER Power decrease due to stopped up Plant Service Water Strainers 81-59 810725 S 1.5 B 5 NA HA HRBIN [oad reduction to perform weekly tur-bine test 81-60 810730 F 7.1 B 5 NA WA FILTER Power decrease due to stopped up Plant Service Water Strainers i 2 3 4 F: Forced Reason: Method: Exhibit G-Instructions 5: Scheduled A Equipment' Failure (Explain) 1-Manual for Preparation of Data B-Maintenance of Test 2-Manual Scram. Entry Sheets for Licensee C-Refueling 3 Automatic Scram. Event Report (LER) File (NUREG-D Regulatory Restrictien 4 -Continuations 01611 E-Operator Training & Ucense Examination 5-Ioad Reduction 5

F-Administrative 9-Other (Explain) Exhibit I Same Source Goperational Error (Explain) '

(9/77) Ilother (Explain)

I

NARRATIVE REPORT UNIT 1 July 1st "A" and "B" recirc pumps t' ripped at 2020 causing a power reduction 1

July 2nd 2329 control rod pattern adjustment July 6th 1536 auto scram on Full Group I isolation cuased by Turbine Bldg. Steam Tunnel 11 1 Temp alarm July 7th Rx critical at 0942. Auto scram at 1911 on full Group I isolation caused by condenser vacuum switches being valved out. When mode switch went to "RUN", logic saw less than or equal to 880 psig.

July 8th Rx critical at 0025. Generator tied to' linc at 0348.

3-July 10th Power decreased at 2303 to repair Feedwater

. Heater check valve.

July lith Power increase began at 2000 July 12th . Plant Service Water strainers stopped up at 1705 causing a power decrease July 15th 2230 powcr decreased to clean circ water s c ~ .,

. July 18th 2119 weekly turbine test July 22nd Plant Service Water strainers stopped up again at 1945 July 25th 2230 weekly turbine test July 30th 1322 power decrease due to Plant Service

[ Water strainers stopped up 1.

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l HATCH 1 SAFETY-RELATED MAINTENANCE REQUESTS TO BE REPORTED FOR JULY 1981 NUMBER DATE COMPLETED DESCRIPTION 81-0972 6-03-81 Removed, then replaced, D/W head for refueling. (1B11-A002) 81-4087 6-04-81 Disassembled and inspected RCIC trip and throttle valve for internal damage, then reassembled. (1E51-C002) 81-1589 6-10-81 Replace existing mechanical 81-1588 snubber with PSA 1 snubber (1L35) 81-1514 81-1522 81-1528 81-1520 81-1530 81-1584 81-1591 81-1512 81-1509 ,

81-1529 81-1586 81-1527 .

81-1508 81-1821 81-1587 ,

81-1511 81-1506 81-1499 81-1593 81-1585 81-4798 6-26-81 Repaired SBLC pump "B" (1C41-C001B) to deliver rated GPM 81-5000 7-06-81 Pulled and terminated cables to RCIC turbine steam inlet MOV (1E51-F045) 81-4912 7-07-81 Replaced RCIC logic relays 1E51-K32,K12 with time delay l- relays l 81-5333 7-24-81 Repaired RWCU pump 1A (1G31-C001A)-

79-4307 7-27-81 Installed new pressure seal in manual FW isolation valve (B21-F011A) 79-4316 7-27-81 Repaired leak in CRD flange (1C11-D146) 81-5141 7-17-81 Repaired refueling floor vent exhaust radiation monitor (1D11-K611A) l

81-5296 7-14-81 Repaired cooling water line to RilRSW pump "A" 80-2523 6-11-81 Installed new poppet on main steam isolation valve for RCIC (1E51-F045) 80-4335 6-09-81 Replace 2" MSIV drain line and elbow with new pipe 81-0743 6-25-81 Repaired control valve for llPCI turbine (1E41-C002) 81-3814 6-09-81 Modify RCIC steam exhaust piping for DCR 81-148 81-5188 7-13-81 Repaired overspeed trip and auto reset on 11PCI turbine (1E41-C002) 81-0268 7-13-81 Repaired connecting rod between switch actuator and float on core spray discharge line icyc1 switch 80-6227 5-23-81 Installed 2" pipe with valve and nipple on each end through Rx Bldg. penetration 81-1645 6-04-81 Core drilled hole in Rx.

Bldg. floor 130' elev. to run weld leads for torus work 81-3296 6-15-81 Performed hydro on RilR Class II piping (E11-PT-1) 81-3303 6-23-81 Repair rod position indicator probe. Rod #30-51 81-4596 6-10-81 Installed time delay to llPCI steam flow Ili Delta P switch 81-3766 6-29-81 Inspected and repaired 11PCI turbine overspeed trip (1E41-C002) 81-3813 6-08-81 Modified RCIC steam supply piping (1E51-G001) 80-6538 5-31-81 Repaired RilR loop "B" testable check valve (1E11-F050B) 81-3439 6-01-81 Modified wiring in MCC "1A" (R42-S021) as per DCR 80-393

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. 81-2567 6-09-81 . Modified PSW backwash piping as per DCR 81-120 81-2428 6-22-81 Removed, then . reinstalled, fuci pool cooling to . RilR fluid flanges on spool pieces during refueling outage 81-6394 6-01-81 Rewired circuitry of valves E21-F019A, B as per DCR 80-352 80-4022 6-16-81 Replaced RPIS probe on i control rod 18-27 80-3342 5-27-81 Repaired manual valve between reheater-and cond. ret. pump N62-F136)

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