05000366/LER-1978-006-03, /03L-1 on 780724:average Drywell Temp Exceeded Limit of 135F as Set Forth in Tech Specs 3.6.1.7.Caused by Stratification of Air Temp in Drywell

/03L-1 on 780724:average Drywell Temp Exceeded Limit of 135F as Set Forth in Tech Specs 3.6.1.7.Caused by Stratification of Air Temp in Drywell

ML20147C262
Person / Time
Site:	Hatch
Issue date:	11/28/1978
From:	Thomas Greene GEORGIA POWER CO.
To:
Shared Package
ML20147C249	List: 05000366/LER-1978-006, Forwards LER 78-006/03L-0 05000366/LER-1978-006-03, /03L-1 on 780724:average Drywell Temp Exceeded Limit of 135F as Set Forth in Tech Specs 3.6.1.7.Caused by Stratification of Air Temp in Drywell
References
LER-78-006-03L, LER-78-6-3L, NUDOCS 7812180205
Download: ML20147C262 (1)

LER-1978-006, /03L-1 on 780724:average Drywell Temp Exceeded Limit of 135F as Set Forth in Tech Specs 3.6.1.7.Caused by Stratification of Air Temp in Drywell

Event date:
Report date:
3661978006R03 - NRC Website

text

-

(

I:

DCON1 ROL BLOCK: (l-I l' l l-lh (PLEASE PRINT On TYPE ALL REOtHRED MORMUOM t

p c

9 'l G lJA'l E l I l H j 2 l@[0_ l 0 l - l 01010 l o 10-l-10 l o l@l 411 l 1 11 l 1 l@l l

l@

L

.8 9

LICENStL COOc

- 14 lb LICLNSE NUMULH 24 2G L)CLfC,L lYPL. JU bl CAf LH i-LON'T

.17 18 l @.

slil

% $ l l l@l 015 l 0 ] D ] 0 l 3 J 616 l@l 01712141718 l@l l

l l

8' t,0 bl DOCK L T NtsvutH ut ta LVENT OATE J4 15 H(POHT DAT L SQ EVENT DESCRIPTION AND PHOOAul.E CONSEQUENCES O'O -

a 121 [ During tho' heatup plateau of Unit 2. Startup Testing the average drywell temperature g exceeded the. limit of 1350 F as set forth in Tech. Specs. Section 3.6.1.7.

Upon g

y,3 j g [ discovery of.this condition, reactor heatup was terminated in the effort to resolve l

g ithe problem.

O 10.1 1 1

0171 l I

0181 l l'

a9 m

C OE SUSC E COMPONENT CODE SUU dC SU E

i olol i A l Al@. ICYEl@ l A j @ l Zl Z] Zj Zl Zl Z[ g g g g g B

9 to 11 12 13 la 19 20 SEQUENTIAL OCCURRENCE REFORT REVISION LE R EVENT YE AR REPORT NO, CODE TYPE NO

@ g;g'RO '17 I 81 1-1 10 1 016 i L__J l 0 13 l lLl 1-l l1 l 21 22 23 24 2G 27 28 23 30 31 32

. j KEN A T N O PL NT TI HOURS 22 S6 ITT FOR US.

U Pile MA

• F C TURE rt [F_Jgl34F[g l'Al@

l A l@

l0 l 8l0 l0 l lY {@

lN l@

l A l@

lZlZlZlZ!@

33 3b 30 3/

40 di 42 43 4

41 f

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

] Following reactor shutdown on 7-27-78 an investigation by Bechtel Power Corporation iO Li j il g and Georgia Power Company personnel revealed stratification of air temoeratures in thet g i rywell.

Analysis of the problems resulted in an outage from 8-20-78 to 9-15-78 as j

d g jdetailed in the attachment.

l

< t l 41 l 1

r e9 ac

' 5A S

% POWE R OTHER ST ATUS 015 IY OLSCOVEftY DESCRIPTION i I b l l B l@ l0 l 0 l 0 l@]

N/A l

lC l@l Startup Testing l

'A!TiviTY cO'0 TE NT AMOUNT OF ACTIVITY @ l LOOAUON OF BELEASE @ '

net ec.EO OF RELE A$E l

N/A l

fil6llZl@lZl@l N/A f

• rEnsONN!t a PO E'iES OtSCHIPDON @

l

. Nuentn TwPE l i I 71 [0_[,0 l 0 l@l Z l@l N/A l

f

• ' etnsONNEt mu'StS otsCnirtiON@

uuuurn -

l t In l l 010 l Ol@l N/A l.

D 8.9.

11 12 to Wno' o=a7'^""v @

78N1802cf lil9I[_Zj@l-N/A l

8 9 to go

""IltYCeuetiON@ Press Release on Aug. 21, 1978 announcing outage.

i>.sur A

8L 1

Illlllllilill!

P 8 9

.10 68 61 W&

00"

~

NAME Of PREPAltEFt

• PHONE:

is