ML20031E303
| ML20031E303 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 10/07/1981 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20031E301 | List: |
| References | |
| NUDOCS 8110150352 | |
| Download: ML20031E303 (4) | |
Text
.
ge, Table 3.1.1 (Cen *d ;
c: E gin
' t-R ACTOR PROTECTION SYSTEM (SCRAM) IysTauxgs A;Iog g303:g34337 p
d 55-6 f0-
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Xcdes in inich X nbar of
._ g f Mj.31 03
- c. Operasle Function Must be Instru: tent 4
1 $'g Instrument Trip Level Operabic Channels Action l
g Channels Trip Function Setting Provided (1) i
>~
FCI Tr1P Refuel Startup Run by Dasign gg System (1)
(7) ou lRg
f i
o"3
~
2 High Water Level 1.50 Gallons X(2)
X X
4 Instru: tent A
b nog in Scran Dischargt Channels o
volume ONN
., :39 2
Turbine Condenser.>23 in. Hg.
X(3)
X(3)
X 4 Instrument A or C Low Vecuu:n Vacuum Channels 2
Main Steam Line 13 X Normal Full X
X X
4 Instrument A
High Radiation Power Background Channels
,u l
7 4
Main Steam Line 110% Valve X(3) (6)
X(3) (6: X(6) 8 Instrument A
Isolation Valve Closure Channels i
l Closure i
2 Turbine control 500<R<850 psig X(4) 4 Instrument A or D
~
Valve Fast Closurt Control Oil Pres-Channels sure Between Fast Closure Solenoid and Disc Dump Valve 4
Turbine Stop
<10% valve X(4) 8 Instrument A or D Valve Closure closure Channels
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Unit &)
t i
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PDAPS ll
_nytes FOtt TAllLM 3.1.1 1.
There shall be two operable or tripped trip systens for each function.
If the minimum number of operable sensor channels for a trip system cannot be met, the affected trip system shall bo placcd in the safe (tripped) condition, or the appropriato actions listed below shall be taken.
Initiato insertion of operablo rods and comploto inuer-A.
tion of all operabic rods within four hours.
Reduce power level to IRM rango and placo modo switch in D.
the sta,rtup position within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
Roduce turbino load and close main steam lino isolation C.
valves within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
D.
Roduce power to less than 30% of rated.
2.
Permissibic to bypass, in refuel and shutdown positions of the roactor modo switch.
3.
Dypassed when reactor pressure is < 600 psig.
Dypassed when turbino first stage pressure is loss than 220 4.
psig or loss than 30% of rated.
5.
IltM's are bypassed when APRM's are onacale and the reactor snodo switch is in the run position.
0; The design permits closure of any two lines without a scram being initiated.
When the reactor is subcritical and the reactor water tein-7.
parature is loss than 212 F, only the following trip func-0 tions need to bo operablo:
A.
Modo switch in shutdown
.i D.
j C.
liigh flux IRM D.
Scram discharge volume high level Not required to bc operable when primary containment integ-6.
rity is not rcquired.
Not required to be operable when the roactor pressure vussel 9.
head is not bolted to the vessel.
. Amendment No. 33 March 23, 1977
UNii 2h I
TABLE II.1.2 REACTOR PROTECTION SYSTEM (SchAM) INSTRUMEtiT CALIBRATIOli MINIMUM CALIBRATION FREQUENCIES FOR REACTOR PEOTECTION IllSTRUMENT CHANN Instrument Chantiel Group (1)
Calit: ration (14)
Minimum Frequency (2)
IRM liigh Flux C
Comparison to APRM on Maximum frequency once Controlled shutdown per week.
APRM High Flux output signal D1 lleat balance Twice per week.
Flow Bias Signal B1 With Standard Pressure Every refueling outage.
Source LPRM Signal D1
'1IP System Traverse Every 6 weeks.
g liigh Reactor Pressure b2 Standard Pressure Source Once per operating i'
- High Drywell ' Pressure A
Standard Pressure Source cycle.
I Once per operating cycle.
- 111gh Drywell Pressure B2 Standard Pressure Source Or.cc per operating cycle.
Reactor Low Water level D2
~
Pressure Standard once per operat.ing cycle.
o g
High Water Level in Scram A
Water Column g
Discharge Volume Every refueling outage:-
S Turbine Condenser Low Vacuum b2 Standard Vacuum Source
,o Once per operating cycle.
O Main SL'eam Line Isolation A
Note (S) tiote (5).
Valve Closure l
w y.a l.t. Steam Line liigh I<adiation It1 Standard Current Source (3)
Every 3 vivnti.s.
Turbine First Stage Pressure A
Standard Pressure Scurce Eve ry 6 si.or.t ht,.
l Permissive Celete(
an redification authcrized by A er.fre.; !. 0 7 a
- crpe:ed.
- W& ti.e >Aer. rctificaticrs autstrized by Avd er.
fi:. F 2*e cc-detec.
(
1>uAl*S
- im'l !i POlt TAllL1 4.1.2
{
1.
A description of throc groups is included in the bases of this Specification.
2.
Calibration test is not required on.the part of the system that are not required to be operable or are tripped but is required prior to return to service.
4 3.
The current source provides an instrument channel alignrent.
Calibration using a radiation source shall be made cach H
refueling outage.
4.
Itusponue timo is not a part of the routino inutrument channel-test but will be checked once por operating cycle.
5.
Physical inspection and actuation of these position switches will be performed during the refueling outagos.
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. l Al'I(IL 1973
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