ML20024C492

Diagram of Steam Generator Loops a & B at t=100 Minute on 830328.Loop a Pumps Off,Steam Generator a Secondary Level Increasing,Pressurizer Surge Line Flooded & Pressure at 920 Psig

ML20024C492
Person / Time
Site:	Crane
Issue date:	07/12/1983
From:	GENERAL PUBLIC UTILITIES CORP.
To:
References
TASK-03, TASK-07, TASK-3, TASK-7, TASK-GB GPU-3105, NUDOCS 8307120693
Download: ML20024C492 (1)

Text

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~

Throo Milo Island - March 28,1979 uao t = 100 minutes (MO m)

Pilot operated Primary water steam n

=* ;

. # relief valve (PORV) p== 920 psig tbI8***"d*'Y**'*'

h

~

pPORV block valve G

n m

r.

4 l

Auxiliary

[

feedwater

' Uf' R

R 1

t t

i g

d k

c.

, Pump IPump

' 0.. !

., b d,'

I

!?"I_

i

! Ioni D

'p d; _

I I

l qa.. m s m o.147 I

1 j

(N\\

(\\

Q)

J o

i X

a gp k

v-r

, war y

3 93 i

i k

,. q:

V e

.1 3

I [/ -ors \\

l.,'

]

j f

q

.ls@;gd.

T l

?& t'

• t

\\ ' * " 3.g '

. i m

I

% r.p

M

.. _4 faggig Letdown flow Loop A Loop B (isolated)

• Loop A pumps off.

• Steam generator A secondary levelincreasing.

• Pressurizer surge line flooded.

CPO 3105 0