ML20055F735
| ML20055F735 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 07/17/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20055F736 | List: |
| References | |
| NUDOCS 9007190117 | |
| Download: ML20055F735 (2) | |
Text
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' QUAD-CITIES j
DPR-29 l
G.
Jet Pumps G.
Jet Pumps 1.
Whenever the reactor is in the 11 Whenever there is recirculation Startup/ Hot Standby or Run flow with the. reactor in the modes, all' jet pumps shall be Startup/ Hot Standby or Run intact,andall.operatingjet modes, jet pump integrity and pumps shall be operable.
If it operability shall be checked
'is determined that a jet pump is daily by verifying that two of inoperable, an orderly shutdown the following conditions do shall be initiated and the not occur simultaneously:
reactor shall be in a cold shutdown condition within 24 a.L The recirculation piump flow
~
hourt.
- differs by more than 10%
from the established speed-flow characteristics.
b.
.The indicated total core flow is more than 10%
greater than the core flow-value derived from-established core plate DP core flow relationships, c.
Individual jet pump flow for l
any jet pump. differs by more L
than 10% from established flow to' average loop jet pump flow characteristics.
2.
Flow indication from 19 of-the
. 2.
Additionallyiwhenoperating l
'20 jet pumps shall be verified with one recirculation pump with prior to initiation of reactor the equalizer valves closed, the startup from a cold shutdown diffuser to lower plenum-ccndition, difforential'presi,ure shall be checked daily, and the differential pressure of'any jet l
pump in the idle loop shall not vary by more than 10% from established patterns.
i 9007190117 900717 I;
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QUAD-CITIES l
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G. : Jet Pumps-G.
. Jet Pumps
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.Whenever the reactor is in~the
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1.
Whenever there is recirculation Startup/ Hot Standby'or Run flow-with the reactor in-the modes, all jet pumps shall be Startup/ Hot Standby or Run modes, intact, and all-operating jet jet pump integrity and pumps shall be operable. ;If it operability shall be checked.
is determined'that a jet pump dally by verifying that two of is, inoperable, an orderly shutdown shalI be initiated and_
the-following conditions do not occur simultaneously:
the' reactor-shall be in a cold ~
shutdown condition within'24' a.
The recirculation = pump flow hours..
differs by more than 10%
from the established _
speed-flow characteristics.
' 3 b.
The indicated totalicore flow is more than 10%'
- i greater than the core flo'w:
value' derived from
, established core plate D9/ core flow relationships, c..
Individual' jet pump flow for
~
any jet pump d!'fors by.more than 10%:from establis'hed t
flow:to' average loop jet pump flow characteristics.
2.
~ Additionally,' when operating with 2.
Flow indication from 19 of the l
one recirculation pump with the
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20 jet pumps shall be vertfled equalizer valves; closed. the,
prior to: initiation of reactor ~
_ diffuser to'lowerJplenum;.
startup-from a cold shutdown
- differential; pressure shall be condition.
checked. daily, and.the differential pressure of any jet i
pump in the. idle. loop shall not-vary by more than 10% from established patterns.
3.
The baseline data' required _to 3.
The Indicated core flow is the evaluate the conditions.'in' sum of the flow indication from_
- Specifications 4.6.G.1 and each jet pump with operable' 4.6.G.2 will be acquired each flow indication.
In addition, operating cycle, for any jet pump with inoperable flow indication, the 4 -
-flow: indication frcr the' companion jet pump-on the same i_
jet pump riser shall be summed.
a-second time.to compensate for the flow through the jet' pump with inoperable flow 3
Indication.
If flow indicttion failure occurs for three or
-1631B/0600Z 3.6/4.6-5 Amendment No.
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