05000348/LER-1981-038-01, /01T-0:on 810610,levels in Fire Protection Tanks a & B Fell Below Tech Spec.Caused by Inadvertent Actuation of Fire Protection Deluge Sys on Cooling Tower 2B.Levels Restored

/01T-0:on 810610,levels in Fire Protection Tanks a & B Fell Below Tech Spec.Caused by Inadvertent Actuation of Fire Protection Deluge Sys on Cooling Tower 2B.Levels Restored

ML20004G064
Person / Time
Site:	Farley
Issue date:	06/23/1981
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004G063	List: 05000348/LER-1981-038, Forwards LER 81-038/01T-0 05000348/LER-1981-038-01, /01T-0:on 810610,levels in Fire Protection Tanks a & B Fell Below Tech Spec.Caused by Inadvertent Actuation of Fire Protection Deluge Sys on Cooling Tower 2B.Levels Restored
References
LER-81-038-01T, LER-81-38-1T, NUDOCS 8106290078
Download: ML20004G064 (2)

LER-1981-038, /01T-0:on 810610,levels in Fire Protection Tanks a & B Fell Below Tech Spec.Caused by Inadvertent Actuation of Fire Protection Deluge Sys on Cooling Tower 2B.Levels Restored

Event date:
Report date:
3481981038R01 - NRC Website

text

..

_h, 7 -

......m....

..o...

/

V, CCNT;ot atoCx: I I

I I

I I

iPt Asa PRINT CR TYPE AU. MEQUIRED INPORMAMM TT~l i A I L I J l M l F !1 l@l 0 l 0 l-l 0 l0 l0 l u l 0.l - l 0 l 0 l@l 4 l 1 l 1 l 1 l 1 l@l l

l@

.P 8 9 UCENSEE COCE 14 IS UCENSE Numsga 25 as i c3N34 TYPE 40 67 CAT se

-[%

,"$ l L ]@[0l S l 0 ] O l 0 l 3 l 4 l 8 ]@[ 0 l 6 [ 1 l0 l 8 l 11@l 016 l 21318 l1 l@

I so si ocCx T.Uusen as se svtNToAT 24 a

acecaroArs ao EVENT DESCNPTICN AND PROBA4LE CONSECUENCES h ITTTl l As a result of an inadvertent actuation of the fire protection deluge system on cooling l

lTTT] l tower 2B, the levels in Firn Protection Tanks A and B fell to approximately 235,000 g

ITTTl I gallons each at 1600 on 6/10/81. Unit 1 and 2 Technical specifications require a 'ninimum i

I o i s i l tank level' of 250,000 gallons. Tech. spec. 3.7.11.1 action statement requirements were g

- l o t a l I me t.

The health / safety of the public was not affected by this' occurrence.

(Note: This ITTTl I LER is applicable to both Units 1 and 2 of FNP).

g

$lo sa s I l

1r s9 so, SYST1M

CAUSE

CAUSE COMP.

VALvt CooE CCoE SUSCOoE COMPONENT CCOE SUSCCCE

$USC006 loi91

[ A lB l@ l Al@ y@ l z lZ lZ l zl zl z[Q l zl@ l zl@

7 8

9 10 11 12 12 ts 13 20 SECUENTIAL CCCURRENCE mg70.1LT REvtStoN Lg pfmo EVENTYEAR REPORT No.

CoCE TYPE No.

OU atg l218l1l

[- j

[ 0l 3l 8[

lpl l0l1l y

l_l g

y 22 23 24 25 2r 28 29 30 31 32 C

P 7

M woyR$ 22 58 iTT PC 1 S.

St P EM W VPA REM

,Q l x I@l ul@

l z [@

Iz[@

l010l0l l

lTl@

g j g l3zi@

l zl 9 l 9 l 9 lg '

23 J4 33 04 JJ 40 44 42 4

44 47 CAusE CESCRIPTION AND CCRRECTIVE ACTICNS @

lt 1 o I i The inadvertent actuation resulted during cooling tower maintenance activities. The y l switchgear which supplies 7ower to the cooling tower fire protection system air compressor;

was de-energized in order to perform a battery replacement. In order to prevent fire'

,,,7,

' h l protection deluge system actuation with the air compressor inoperable, a temporary [TTT1 l nitrogen bottle was connected to the deluge system sensing lines. However, the nitrogen,

'r

's'r*M cruinsTaTus @ s'sfofN oise viny essCnipw. @

vowea lIi iil l El@ l 11010l@l NA l

l A [@l Operator observation l

• Jny,w Co'#r,Nr

'2 n

o 7

= li 151 l zl @o op =staAss(z_J@l AmouNTen ACTiviry @ l i.cCATic'N ce netsAsa @

ret Ass NA l

NA l

8 9 to l'

44 45 po PER$oNNEL EltPoSUAE$

NUti.0 E R TYPE Ot3CptpT1CN l

l l 7 l l 0l 0 l 0 l@g@l NA

,ioscNN.'L iNJ,is

=

oesCairricN @.

NuMeen li la ! I ol 01 O l@l NA l

'/( ' E o,ege1Me,4C:un g g

li,41 zl@l NA l

,,,u,'"'"if"co,,T,oN @

NaC usE cNo.y u s iNiei N*

i i i i i i:,,,,,, i e.

m;

' SaltiU g g 0 %.

a a W. G. Hairston, III

......(205)899-5156 o l

..... ~......,

.~

~.

cL * *, f *

' ~

1 LER 31-038/01T-0

-,bottle outlet valve for 2B cooling tower deluge system was not opened. As a result,'the clappar valve opened and the deluge system acniated.

The tank levels were returned to minimum acceptable Technical Specification levels at 1845 on 6/10/81. This incident will be discussed during requalification training.

e 6

m s

t S

• em I

f o