05000321/LER-1979-002-03, /03L-0 on 790111:during Normal Operation,Hpci Steam Supply valves,E41-F002 & E41-F003,automatically Isolated Due to Equipment Room High Differential Temp & Cold Outside Air Flowing Across Inlet Air Temp Elements

From kanterella
(Redirected from ML19270F325)
Jump to navigation Jump to search
/03L-0 on 790111:during Normal Operation,Hpci Steam Supply valves,E41-F002 & E41-F003,automatically Isolated Due to Equipment Room High Differential Temp & Cold Outside Air Flowing Across Inlet Air Temp Elements
ML19270F325
Person / Time
Site: Hatch 
Issue date: 01/31/1979
From: Nix R
GEORGIA POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19270F322 List:
References
LER-79-002-03L-01, LER-79-2-3L-1, NUDOCS 7902060254
Download: ML19270F325 (2)


LER-1979-002, /03L-0 on 790111:during Normal Operation,Hpci Steam Supply valves,E41-F002 & E41-F003,automatically Isolated Due to Equipment Room High Differential Temp & Cold Outside Air Flowing Across Inlet Air Temp Elements
Event date:
Report date:
3211979002R03 - NRC Website

text

LII.;tNbbt tVtN I HEPOH T CONTROL BLOCK: l l

l l

l l

IPLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI

@ l c I a l e I r I o l 1 !@l o I o I o I o I o I a._La I o I e I o I 0 l@l a i 1 l 1 11 l 1 l@l I

I@

R 9 LICENSEE CUDE 14 15 LICEN>E NuMWEH J3 2t>

LIC&NbE TYPE JJ hi bAI Sd N*T O

5 / "C I l l@l o l 5 f o l o l o l 312 l 1 1@l o i l l 1 111719 l@l o l 1 13 f i l 719 l@

5 60 61 OOCK E T NUMti E H W

FJ EVEN T OATE 14 lb REPORT OAI E

  1. 0 EVENT DESCntPTioN AND PROBABLE CONSEQUENCES h

@l Durino normal coeration the HPCI Steam Sucolv Valves, E41-F002 and E41-F003, I

gl automatically isolated due to an Equicment Room High Differential Temoerature 1

I h

9I (Technical Soecification Table 3.2-2 Item 9) at the folicuina dates and times:

i gi 12-10-78 at 1545,12-23-78 at 0002,1-2-79 at 1545,1-2-79 at 2330, and 1-8-79 at

]

91 1730. Neither safe plant coeration nor public health and safety were affected bv I

I i i these incidents.

I 8I I

sS so SYSTE M

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SU8 CODE SUSCODE

]

l Cl Fl@ l B l@ [Aj@ l Zl Zl Zl Zi ZI Zl@ l Zl@ Q @

5 9

10 11 12 13 14 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION r

LE R/RO EVE NT YEA R REPORT NO.

COOE TYPE N

f

@, reg l2, 7l 9l l_l l0 l0 l2 l y

l 0l 3[

lLl

[._.l l b,l d

L 22 22 24 a

2,

a a
0 si u

v NEN LOT

""EPH A

C PLANT M

NOURS U S 8 IT D

F R 8.

SUPPt.I MA? FA URER IXJ@lx[g l5Zlg l Z i@

l 0 10 l 0 l u t IN lg lY l g lZ j g lZ l 9l 9l 9lg 23 34 3

46 31 40 el 42 43 44 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS

@ l The differential was caused bv extremely cold cutsit'e air flowino across the inlet i

1 7

f BI air temoerature elements (E41-N029A and B) and creatino a creater differe-tial I

a y

than 40 1 5 F-between the inlet and outlet temoerature elements. At the cresent I

I g i time the HPCI Recm Ventilation Damoers (Tal-F036 and Tal-F037) are beinc closed I

-] I when the outside ambient temoerature decos encuah to cause this ccndition.

I f

4 8 9 80 U

% POWER OTHERSTATUS IS O RY DISCOVERY DESCRIPTION D LEJ@ l Cl 91 91@l NA l

l A !@l Operational Event I

j A

VITY CC TENT RELEASED OF PELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE

{

D.Lz.J @ Lij@l NA I

I NA I

t PERSONNEL EXPOst ES NUMBER TYPE

DESCRIPTION

DI01010!@l21@l NA I

PERSO~NE L,~,u'4ES euCRiPTiO~@

NuM.ER t

D 1010101@l NA l

S S i2

.0 LOSS OF OR OAMACE TO PACILITV t

TYPE

DESCRIPTION

] U@l NA I

S S to to

'*'L'?CR PT,0~ @

0] LSUE @l 7 90 2 0 6 o ASY

""c"""

1 S

t NA I

lllllfIIIIIfI; S 9 14 68 69 bu 5 NAME OF PREPARER S-I UIT IOI2I 7 771I PHONE:

Superintendent or Maintenance

_g i

i 1

Georgia Power Company Plant E. I. Hatch Baxley, Ga. 31513 Reportable Occurrence Report No. 50-321/1979-2 Cause Description (cont.)

Document Change Request No. 78-20 has been submitted for the deletion of requirements for a system isolation due to high equipment room differential temperature from Unit 1 Technical Specifications.

e e

w

- no -emme