ML20244B845

Application for Amend to License DPR-57 Changing Tech Specs to Allow Temporary Extension of 24-h Limiting Condition for Operation of Drywell Inerting to 72-h

ML20244B845
Person / Time
Site:	Hatch
Issue date:	02/08/1982
From:	Widner W GEORGIA POWER CO.
To:	Office of Nuclear Reactor Regulation
Shared Package
ML20236H997	List: ML20236H994 ML20244B845
References
TAC-54378, TAC-54379, NUDOCS 8202160488
Download: ML20244B845 (2)

Text

.r n q; ,

h aw ?fhh*k , .':JGeg , a .lPowe, jg; . , _

^^ '

~

.Il fb]

[j'h3.f 2 Cornpany - ',

d M ?..A*hpJ (333 Pra?none Avenue ( y. ,

~ '

JWi 'y; wania' Georps 30308 , .

F yry i Tetepnone 404 526g025 ? l n

N L

' ; Masng Adoress,

, J ,.

<: J V hg~ ;po,u Otsc, gy s$as .

, , &> a b $  ;, i Aranta Georga 30302 b -f p1 y ,

Georgia PowerL 4

E 2 Wi A. Widner February 8, ?l982 >

1. * * *'" #*C" " " '"

d by , ci; f V,cs Presiaenf and General Manager ._

k :f~~

' F0554 and Hycio Generahon 4

u) '

6 7m

.e Qj ,

P LRECEWED ,

Director;of tbclear Reactor Regulation

. FEB161982* 5 a

U. 5., Nuclear Pegulatory Commission nr a mrrm m :a

Washington, D. C. 20555/ **QN. S -

.c j

. NRC DOCKET.30-321 Id l

( .g

]

7. '

"J -OPERATING LICENSE DPR-57

> ' EDWIN I. HATCH NUCLEAR PLANT UNIT l-IMMEDIATE' RELIEF FOR DRYWELL.INERTING-h '

TECHNICAL SPECIFICATION

-)

y~

Gentlemen- , a

'1 Pursuanti to 10 CFR -50.90, as required by ~10 CFR 50.59(c), Georgia Power ;

i 1 . Company proposes 1 an amendment to the. Unit 1 Technical' Specifications 'l (Appendix"A to the~ Operating ~ License).

Technical Specification 3.7. A.S.b - requires "withinithe 124-hour period : ,

/ subsequent to ' placing the reactor in the RUN mode following a' shutdown, the j containment atmosphere ~ oxygen concentration shcIl be reduced to'less than 40 1

byJvolume andLmaintained in this' condition". However, during the startup.of February 7; L1982, Lit became apparent thatL there was ~an insufficient amount- :i Lof' liquid nitrogen ' available to meetH this' 24-hour JLCO. Additionally, j

resupplies ?are not available until after the 'LCO expires.' . We hereby request- 1 a- one time extension :of the 24-hour- LCO to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> beginning at 3 'p.m'. EST n, on February 7, 1982. Minimum levels '(2000 gallons) of nitrogen are being h,, ;mainta'ined to preserve operability of the Containment Atmosphere Dilution i L(CAD). system per Technical Specification 3.7.A.6.b.  !

L Safety Evaluation'- Drywell Inerting b The basis for a 24-hour requirement on attaining a 4 percent oxygen

1. <

~ concentration following . entry into the RUN mooe is to minimize the i possibility of. hydrogen combustion .following a loss-of-coolant accident.

The 24-hour period was established, as stated in the bases for specification 3.7_. A.5, . as being suf ficient to perform necessary drywell inspections and establish- the required oxygen concentration. The control is administrative and supplements the CAD system. j 3, i p i y The CAD system provides the basis for assuring containment integrity ]

post LOCA. Due. to the license date for Unit 1, the CAD system was installed

~

l

to Lmeet . the then applicable regulations addressing. hydrogen evolution. In I order to meet the currently applicable interim final rule, capability to

[X q

h/ g M*.7

.Q .

install portable hydrogen recombiners is being engineered, and, therefore, orgia. Power.Comoany is in compliance with the regulations.

q l

bb  %'d PDR ADOCK 05000321 B20208  ! pl I

l b 0

[

WP PCR.

= -. - .- - -.; _._ _ _ a

W2, LJ ;MMW+WFWWM+PPP , 7" " w + w ' ~ m W 5 y ' '

, 1 l +eg ; .

I I ll 9Y '

y m y -

i y y g. ;

ry - m s m,,

g$

,gf t

. .p ; ,7 . , ,

.g's m ;t. " , p',<' .'-,",b, q .'

l : n' ' ' ' ,

y[g

-N Y '{u F ;d i s y-

,v . 4. 7 . t 1. . t at #n +

J4%GeorgisPo> wsr ' M'" ,

i 1 g7e 5 M. s ! 4  %

%yf 17 '

N v..~.

JDirect$dof/ Nuclear. Reactor. Regulation,1 m , , . . . .

o v~-

+

' 5 d@n. 774.. A iUnS.Aiclear Regulatory Commission' >

F m,%.>

f:[ ym:,7, , < Washingtonf

'JFebr0aryg,(1982f DCwC.020535 a  ;

, f, ,9 g agq Two e

NMR

\ ; ,

Nu

"*  ?

w$$W% ,

. .n .. . , ;

. ,. . w "

%$e; l' ("g g4 Because3the (24-hourt limit X is h an l administrative ? control, m as ? opposed j to' '

d d~ Wdl hi (providing '

? Specifications,Jareinotfre "a /safetyffunction,duced a'. : longer . period 'of time; margins of safety,f

'bylallowing .. to? asi #efine TheT safety marginbis ';providedj by7thei CAD; '

4%^ o+,;,:completeidrywell;..'inerting- system. ,

• i 4 a.c M  ;

, %p ' * '

y Addit.ionally, l due [tof plarb factars, .:' af maximumithe'rmal power flevel* of.-

,, ,  ; ,x A

k@

[

l,,

4Mlesshth'an'[

i . Lextension. 50 JWef f percent?

estimate ithat will :inithe C

'be reached lexpected .duriiig

rod pattern, ithe reque'sted i marginst toperiddi.of("

Ethe f

?,Y V:MAPLHCR limitMshouldLapproach 50 : percent,Jproviding i additionalFconservatism W.'

,f ,%y 1totthe analysis? accident' conditions.

g< .. . .. .

s,-

y-

,  %, , , , 1 Extension 'ofithe drywell'inerting LCO Jalso necessitates anJe'xtenAion/of-..' y' ' , y m

^

the: LCO} for TechnicalL Specificatiori; 3.7. A'.7. (1) dDrywell-SuppressionlChamber m M

nr , ; , % -Dif ferential . Pressurei t for. a.' like! time ' period.' Re' quired differential-y s s.; s :pressurecannotbefestablisheduntil'inertingis-complete.D .

7 ,

3 m , y 3

, g4 pni i jThis(submittai Jis; for immediate relief.: AL formal submittal,fincluding m *' ' '

1. , determination ^of amendment class,Lwill. follow.  ;

o  ; .

, ' ,.< <..3

- e 2 W, 1 W.E A. Widner ustates f that heJis Vicei President of...GeorgialPower Company cand ,

? 4

, Jis l authorized Jto? execute this; cath Lon; behalf of ' Georgia Po.wer L Company,5 and - ,

thatt to' the "bestiof his knowledge ' andL belief theJ facts set forth'in this ' .

M

'IB 1 M 11etter are true.,

, a

, t GEORGIA; POWER COMPANY-

} n.

S m, , /

' 'l By: d 'a( [,- . F N. 9 W. A. Widner r

"8c._

D; 4 Sworni o and subscribed .before me this 8th day of February,1982. .

/ / Notary Public, Georgia, State at Large gg 1 Q '/ . .

-Q My Commission E.xpires Sept. 20,1983 W ,

f '

Notary Public e

M m. 'RES/mb?

y y E 9  : x'c : M. Manry u R. F. Rogers, III J.:P. O'Reilly (Region II - NRC)

~

q; '

y

.h ',,

1 g

L J 1 '

'O

i [ . ' I '

k N, .I {l l >

i fl ' ' ' ' ,f ,,

- _ - _ _ - _ - _ _ _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ - _ - _ - - _