ML19220D048

LER 79-020/03L-0 on 790413:measured Leakage for Personnel Air Lock Was 54.63 Std Cubic Ft/H.Leakage Identified Through Outer Lower Handwell.Shaft Packing Was Replaced & Air Lock Retested

ML19220D048
Person / Time
Site:	Dresden
Issue date:	05/04/1979
From:	Parcell M COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-79-020-03L-01, LER-79-20-3L-1, NUDOCS 7905160385
Download: ML19220D048 (1)

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April IR, 1979 ,

C91. 0534 y

Office of Management Information '

. and Program Control Artn: W. C. Mcdonald, Director '

U.S. Nuclear Regulatory Comission C Washington, D.C. 20555 y .-

Dent Sir: ,, -.

s Three Milo I a l nrxl Nuclear Star ton. Ifnft 2 (1HI-1) _

Operatinr.I.frenac No. DPH-73 nocket f'o . "0-120 Enclosed please find the Monthly Operating Report for t he cont h of March, 1979.

Sincerciv, J. G. Itcrbein .

Vice Prealitent-cencratinn

!Gil: RAL: ta a Enc losu re cc: Mr. B. II. Crier. Director Office of Inspection 6 Enforcement. Region't lf.S. Nuclenr Regulatory Cominnion 631 Park Avenue King of Prunnin, Pennsylvania 19406 Mr. Ted Cintula _.

Maryland National Bank Building c 12105 MNBB ' "

II.S. Nuclear Regulatory Comission Wsahington, D.C. 20555 Mr. Ernst volgenoo, nirector Of fice of inapection & Enforcement If.S. Nuclear Regislatory Cominnlon W.ishington, D.C. 20555

, 7905!30 13 7 119 077

Slf} NARY OF M('fl Till.Y Ol'I'R Ai l':'.

F.XIT R I TNr r The plant opera rcil at 082 pm.acr unt i l Hare l. 7R. I '> l'8 wh< n e be-prearnt i nc l elen t occurrel. Tlie p i tin t l e. i r c-rne i r In ' ' ' ' .

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119 073

LIi!T SHLTDC'd'IS AlfD DCVE? RE "Ir, Lg Docket .'io. 30-J20 March, 1979 Unit Nexe Three Mile Island 5 REPTRT % NTH April 18 1979 Date Completed bf R. A. Lengel _

Telephcne 51'i-471-U d1

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Nc. Date Tyne- 5, 7: m s.2 o System, o= a na a. *. Cause and Corrective

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S 23/06/79 F 16.5 A 3 Turbine generator tripped f ollowed by Reactor Trip on Core Power Imbalar4e 6 33/29/79 F 92.0 A 3 Feedpump trip, turbine trip, reactor trip on high pressure. Cause and corrective action to prevent recurrenc e will be provided .st .a t

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e AVETTAGE DAII.Y U';IT Pl**ETt LEVEI, 1

Docket thi. 0; J 70 .__ ,_

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. p ,e April IR, 1919 CoMiletc't I'v j'. A. I.. pr. I Telephnn, 71 ',- 91 l - f.' HI DAY AVERAGE DAII.Y POWEF LEVEL DAY AVFur.';E P Al f Y I "Wie i t '. '

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1 892 17 Blu

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CPERATING DATA REPORT Docket No. '0- W Dete _ Ay r,iJ,_18, 1979 com>let 4 Rv 4,.,A.

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OPERATING STATUS Telarhnn. /Ii-921-6'81

1. Unit Name: Three Mile Inland

2. Reporting Perial: Jforch 1979

3. Licensed Thernal Power (Wt): 2772 14 Na2seplate Rating ' Cross We): 9 f'l 5 Design Electrical Rating (Net We): N' *

6. Max. Dependable Capacity (Crong We); 410

7. Mnx . Dependatle Capacity (tiet We): W S. If Chansres Occur in Cnywelty Ratt nan (Itenn No. 'l through 7 ) ",Ince I 'i a ' I'at" rt, Cive Reasons:

9 Power Level to which Restricted. If An.v (Net We): _ _ _ _ _ , , _ . , , _

10. Reasons for Restrictions, If Any: _ _ _ _ __ __ _ , _ _ _ _

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rmu i n Y: sei feAss e peros a s iv 11 . Hours in Reporting Period 7 '* 4 2160 /185 I?. No. of Hours Resetor was Critical I'* 4 3665 " 1670 "

13. Reactor Reserve Shutdown Hours 13 I' .. 471.4 ._. 4 ?.I . O.

1 14 Ifours Generntor On-Line 61%,4 1614,i Ic;9,j

15. Unit Reserve Shutdown Hourn 0 _

0 0

16. Cross Thermal Energy Genernted (W11) 3 # " " 7 '"'""#

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17. Cross Elect. Energy Cenerated (Wil) TiH I D I l lt97H*] _j /g /(j'd) _

18. Net Electrical Energy Generated (Wil) 5"37" _ 3_ II, " .3II _. . _ _III6822 10 Unit Service Factor 85 4 76 7 15 4 20 Unit Availability Factor 85.4 _ . 14.1. . . .

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21. Unit Capacity Factor (Uelng MDC Tiet) 84.1 69.1 69 ',_

.'P . Ifnit Capacity Factor (Using DER Net) Al I l 6 f'l 5

'3 "ntt Forced Outage Mate 14.6 7,.7 73,4

.Ns . Shutdovns Scheduled Over Next 6 Months (Typa, Date, and purne lm er Ench ):

25 If Shut Down at End of Report Period , Estle:nt eil Pat e or "i .. t op: _ _ _ - _

D. l'n t t s In Te s t S t atu s ( Pri or to Cor,ncre t al Opa rr.t l on ) : ronprf, r f.. Ill EvFD

'NITIA!, PRITICALITY 1/ '"' / ' 4 i//H/I" INITIAL ELECTRIPITY ' I I ' ' # ", ' 'I COMMERCIAL OPERAT10*i I?/10/lH 17/10/_18

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