ML20024B450
| ML20024B450 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/30/1980 |
| From: | Rosalyn Jones GENERAL PUBLIC UTILITIES CORP. |
| To: | |
| References | |
| TASK-*, TASK-GB GPU-2521, NUDOCS 8307080769 | |
| Download: ML20024B450 (2) | |
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4698 1below the pump.
And you know, that is shown on that Figure 7 21 following page lu, the loop seal concept that exists below 3 th e pump.
m 4
DE. JORDAN:
I guess -- show me again on the 5 diagram.
6 WITNESS JONES:
Well, what I as s a yi n g, the 95 7 percent level vould put you approximately at the top of the 8 little sguare indicating the racetor coolant pump.
f9 DR. JORDAN:
That is 95 percent on the secondary to side.
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WI"'3ISS JONES:
That is 95 percent on the It2 secondary side, and wha t that allows is roughly a 5 foot 13 cond ensin g surface above the inlet to the reactor coolant 14 pumps from the pump section piping.
So you vould have the 15 ca pa bility f or a 5 foot. exposed surface area and then any 16 steam condensed in that region, provided tha t you maintained 17 th e reactor coolant system inventory sufficiently such that
,18 th e loop seal was full, any steam condensed in th e region 19would fall'into that water which, by the hydrostatic head, 20 would push a little water over the pump and keep a
{21 cirrulation pa ttern established.
22
'DE.
JOEDAN:
Yes, I see what you a.re saying, but 23 n o w isn't was I wrong then in assuming that the 95 24 percent level on the secondary side was to assure that there 25 was an adequate surf ace on the primary side for the 8307080769 801130 PDR ADOCK 05000 9
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2 V!! NESS JONES:
let me try to rephrase it.
I 3 think you said that right.
4 DR. JORDAN:
Tha t 's what I wanted.
Is my 5 understanding correct?
6 WITNESS JONES:
What it basically means is that it 7 leaves you, it gives you an opportunity to have an exposed 8 a rea.
9 DR. JORDAN:
A cooled area.
10 VITNESS JONES:
A cooled area by the secondary 11 fluid such that you can condense steam in that region and 12 gu ar an teed, have more or less a guaranteed c3.rculation path 131f you caintaied inventory.
i 14 DP. JORDAN:
Okay, fine.
That does correspond 15 vith my understandinr.
16 E! 5S. WEISS:
( R e s u=i n g')
17 C
Do you need emergency feedvatar for boiler 18 condenser code?
19 A
(WITNESS JONES)
No, ma'a=,
you do not.
30 0
DO you need to have water in the steam generator 21 a t the 95 percent level?
A As ! sta.ted yesterday, the actual number, the l
l l23 =inimum level vould probably be on the order of 75, 80 24 percent.
The guidelines state 95 percent.
L 25 0
That means the operator's procedures tells him to ALOERSoN REPORTING COMPANY,INC.
403 V RGINIA AVE., $.W., WASHINGTON. O.C. 20024 (202) 554 2345 u
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