ML20154M409
| ML20154M409 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 09/21/1988 |
| From: | DETROIT EDISON CO. |
| To: | |
| Shared Package | |
| ML20154M412 | List: |
| References | |
| NUDOCS 8809280286 | |
| Download: ML20154M409 (3) | |
Text
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e PROPOSED FACE O(AlfCES l
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PDR ADOCK 05000341 P
PNV 1
INSTRUMENTATION 3/4.3.4 ATW5 RE :tCULATION OUMP TRIP SYSTEM IN5"RUWENTATION LIMITING CONot*!ON ESR OPERAT!0N The anticipated transient witneut scram recirculation pumo trip (ATWS-RPT) 3.3.4 system instrumentation enannels shown in Tacle 3.3.4-1 shall be OPERA 3LE witn their trip setcoints set consistent with the values shown in the Trip Setpoint column of Taele 3.3.4-2.
ApoLICABILIIY:
OPERAT!ONAL CONDITION 1.
ACTION:
With an ATWS-RPT system it. 'rumentation channel trip setpoint less conservative than tne value snown in tne Allowable Yalues column of 4.
Tacle 3.3.4-0, ceclare the :nannel inopersole until the channel is restorec to CPERABLE status with the channel trip setpoint acjusted consistent with the Trip 5etpoint value.
With the numoer of OPERABLE channels one less taan recuired by the b.
Minimum CPERA3LE Channels per Trip System recuirement for one er.
botn trip systems, placa tne inoperacle enannel(s) in the trippec candition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Wita the nunter of OPERABLE channels two or more less tnan recuired c.
by the liinimum CPERA3LE Channels per Trip System requirement for one i
trip systes and:
If the incoeracle channels consist of one reactor vessel water 1.
leve7 channai and one Psactse vessel pressurs enannel, place noch l
"ino:eramle channels in the tripoec ::ndition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, or,
' f this action will initiate a pum trip, de:lare tne trip system i
inceeracle.
If the inceerable enannels incluce two reae ce vessel water levsi 2.
l channels or two reactor vessel pressure enannels, ceclare tne trip systes incperacle, With one trip system incoerasle, restore the ine: era:1e tric system d.
OPERA 3LE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least STARTUP within t:
tne.next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
With both tric systems incpertale, restore at least one trip system to OPERAELE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least STARTUP within e.
the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
SURVE!LLANCE REOUTREw!NTS 4.3.4.1 Each ATa'!-RPT system instrumentation :nannel shall be de enstratad OPERA!LE by the serformance of the CHANNEL CHECK, CHANNEL FUNOT:CNAL TEST and CHANNEL CAL 13 RAT CN coerations at the f requencies shown in Tacle 4.3.4-1, LCCIC SYSTEM FUNOT:CNAL TE575 and simulated aut:matic c:eration of t
4.3.4.2 all channeis snail te performac at least once per 18 mentns.
FERM: - UN:T:
3/4 3 32
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--TA8tE 3.3.4-1
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Reactor Vessel low Water tevel -
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tevel 2 1
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Reactor Vessel Pressure-;llgt 2
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.I J0ne-c hanne l - i n-one-tr i p-sys t em -mey-bc-til aced -i n-an-i nope rab l e-s t a t us-f or-isp - to hours-f o%
-respaired-surveillance-without placisw3-the-trip-system-in-tlie-tripped-EenditIOM-prEVlded t
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- t ha t-a l l-e the et hanne l s-a re - OP L RAu t t a i
"One channel may be placed in au inoperable status for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for l
required surveillance provided the other channel of W. s*=e. &-st La*A j
is OPE'RA8tE.
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4
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