05000366/LER-1979-078-03, /03L-1 on 790622:hydrogen Gas Concentration Downstream of Recombiners Exceeded Tech Specs.Caused by Improper Operation of Preheater Which Resulted in Insufficient Gas & Droplet Temp.Investigation Underway

/03L-1 on 790622:hydrogen Gas Concentration Downstream of Recombiners Exceeded Tech Specs.Caused by Improper Operation of Preheater Which Resulted in Insufficient Gas & Droplet Temp.Investigation Underway

ML20132A699
Person / Time
Site:	Hatch
Issue date:	08/10/1979
From:	Rogers W GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20132A689	List: 05000366/LER-1979-078, Forwards LER 79-078/03L-1 05000366/LER-1979-078-03, /03L-1 on 790622:hydrogen Gas Concentration Downstream of Recombiners Exceeded Tech Specs.Caused by Improper Operation of Preheater Which Resulted in Insufficient Gas & Droplet Temp.Investigation Underway
References
LER-79-078-03L, LER-79-78-3L, NUDOCS 7908200323
Download: ML20132A699 (2)

LER-1979-078, /03L-1 on 790622:hydrogen Gas Concentration Downstream of Recombiners Exceeded Tech Specs.Caused by Improper Operation of Preheater Which Resulted in Insufficient Gas & Droplet Temp.Investigation Underway

Event date:
Report date:
3661979078R03 - NRC Website

text

u.

.a Update to a previous r.1pcrt

• TEMSEE EVENT REPORT c

sut tttd August 2, 1979 COtJinOL Pl.CC4: l l]

l l

1_(

(ptt A ;r pnlNT OR TYPE ALL liEQuiM D IM O AF.tATio.?

i M [..Cjijjjljgl 2 J@! O 1010'l01010101010 l0 l0 j@!4 l1 l1 l1 li [@[

l (g

e v Lt;E?.5EE Ci.0L 64 15 LICE :.al t U'.WH 23 26 UCLM.E T v rE JJ SJ 4.AI M Z "J l L }@l 01510 l o 10131616 t@l0 If> 12121719 l@l0 l8 l1 10 l7 "iN'T 1il 6d t')

EVENT D Af ti d4 7b RErOHT DATE 60 60 fe l CGON ET NU'.*SE a 8

EVENT DESCRIPTION aND PRO 3 ACLE CONSEQUENCES h t tion, raeasured down-

[

2 If) l Durinc startup operations at 25 K4t, the hydrogen gas concen ra This value is greater than the E Lstrean cf the recombiners, increased to about 13%.

h limit of 40.

The hydrogen level l

3 N i l Technical Spacification Appendix B Section 2.1.3.

There l ues greater than 4% for approxistely two hours before returning to nonnal.

j 3jij o lo 1 I hes besn tio more events of this type, one occurring on 7-15-79 at 320 IMt and one The hydrogen level for the event on 7-7-79 exceeded the 4%

o li) I on 7-7-79 at 256 Kit.

,c_Jsj i limit for about 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> and the event of 7-15-79 exceeded the 4% limit for about 6 su'scE6E sMEs

'c5'c'E

1. • "o'e' s8a#$5s covroNEnT eooE c0 T]T) l MI Bl@ l DI@ I Z l@ IR IE lC 10 lM.lB l@ l Zl@ l Zl@

8 9

10 11 12 13 18 19 2.i REVl0lON SCOUE NTI AL CCCURRENCE RE PortT EVE *fT YE AR REFC F.T NO.

COOE TYPE P!O.

O g(ggtpg [212j_9J l-l 1017181 lel 10 13 l lL]

[___j g

.g 22 23 24 26 27 23

.'9 30 JI 32

^ W M ir d a 'EuSir-JUMu%

[0 10 10 @10 I [1j@

in j@

{3J@

lC11l6l3l@

%'Tu TcWR Jtts

$cr s

uom LLUSLHj@

lZl@

[JJ@

3J 34 33 26 3<

40 41 42 4J 44 47 causc ossemenov ANo coarsenvc Acno:vs @

M i The orebable cause for the event en.6-22-79 was the inroper operation of'th l

i.i l'l hecter vhich resulted in insufficicnt temperature of the gases and droplets of moist g it The probable

!i t :.j i ure enterinc the recorrbiner, thus reducing its recombining ability.

ii i g I cause for the other two events was excessive moisture entering the recombin g

An investigation is undervey to j

a L transient conditions of plant startup operations.

80 C 9 STt

.5

4. ROWER OTHCRSTATUS DS 8

DISCovtny D:5Cnt*TIOP 2 5 I [Bj@ l 0 ! 0 l 1 l@l HA l

lAl@l Operator Observation

(

l ACTIVITY CO TENT LCCATION OF itELEASE ii 16 I 17 l @ LZJ@l "A

I I

"A I

nFt F AVO GP HELEME Af.tOUNT or ACTIVITY 80 44 45 7

8 9 t3 ei PCR50NNEL t sPO',Un CG Nu9Cin Tyre ctscn#PTION l

TA iLjljl0l0l0l@lJ_J@l P E n5o".r.E L INJU LS fievhtn C 7 0Ca tP TION

}

ii_h] [0]010 l@l tA

=

7908200 382 3 f,e,:S o, On O."

et ;O,,.c.or< Ua

.s m,., P Y,0.. -

TA i,L}.k.}UdOI_

. J io nnc ust oNov

.5.u[rI"U[he n, @

NA l

l!IIIIII_l._LLlj5 R, J.2) L,!!Ibl.

e s) a:

P

--__ % L Po'nrs, licalth Phys c ?.t m e s. m(9'l?)357-7711 i i

.3

v,

.(

(

6-Georgia Power Company Plant E. I. Hatch Baxley, Georgia Reportable Occurrence Report !! umber 50-366-1979-078 Event Description and Probable Consequences continued hours. There were no effects upon the public health and safety due to these events.

/

Cause

Description and Corrective Actions continued 4dentify and correct defic enc es in the operation of this equiptr.ent.

i i

G 4

e k

e I

l 1

e e

e

.]

e e

e e

O 5

e 9

a g