ML20080E681
| ML20080E681 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 09/12/1983 |
| From: | MISSISSIPPI POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20080E676 | List: |
| References | |
| NUDOCS 8309140039 | |
| Download: ML20080E681 (2) | |
Text
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INSTRtMENTATION.
SOURCE RANGE MDNITORS-i LIMITING CONDITION FOR OPERATION 3.3.7.6. At least three source range monitor channels shall be OPERABLE.
APPLICABILITY: OPERATIONAL CONDITIONS 2*, 3 and 4.
ACTION:
l In OPERATIONAL CONDITION 2* with one of the above required source a.'
range monitor channels inoperable, restore at least 3 source range monitor channels to OPERA 8LE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or be in at least HDT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
b.
In OPERATIONAL CONDITION.3 or 4 with two or more of the above required source range monitor channels inoperable, verify all insertable con-trol rods to be fully inserted in the core and lock the reactor mode l
switch.in the Shutdown position within one hour.
SURVEILLANCE REQUIREMENTS 4.3.7.6 Each of the above required sourcie range monitor channels shall be demonstrated OPERABLE by:
l a.
Performance of a:
1.
CHANNEL CHECK at least once per:
4 a) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> in CONDIT;3N 2*, and b) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in CONDITION 3 or 4.
2.
CHANNEL CALIBRATION ** at least once per 18 months.
b.
Performance of a CHANNEL FUNCTIONAL TEST:
1.
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to moving the reactor mode switch from the Shutdown position, if not performed within the previous 7 days, and 2.
At least once per 31 days.
Verifying, prior to withdrawal of control rods, that the SRM count c.
rate is at least f cys with the detector fully inserted.
o.7 l
Nith IRM's on range 2 or below.
- Neutron detectors may be excluded from CHANNEL CALIBRATION.
GRAND GULF-UNIT 1 3/4 3-73 8309140039 830912 PDR ADOCK 05000416 P.
TA8tE 3.3.6-2 s
j CONTROL 1100 BLOCK INSTRLMENTATION SETPOINTS
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5 TRIP FUNCTION' TRIP SETPOINT ALLOWA8LE VALUE
. o i
1.
ROO PATTERN CONTROL SYSTEM E
a.
Low Power Setpoint 20 + 15. -UX of RATED THERMAL 20 + 15, -05 of RATED THERMAL POWER i
Q POWER i
b.
Intermediate Rod Withdrawal
< 70% of RATED THERMA! POWER
< 70% of RATED THEllMAL POWER y
j Limiter Setpoint 2.
APRM i
a.
Flow Blased Neutron Flux-Upscale
< 0.66 W + 42%*
< 0.66 W + 45%*
i b.
Inoperative NA NA c.
Downscale
> 5% of IIATED THERMAL POWER
> 3% of RATED THERMAL POWER
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l d.
Neutron Flux - Upscale Startup i 12% of RATED THERMAL POWER 1 14% of RATED THERMAL POWER i
3.
SOURCE RANCE MONITORS l
i l
Y a.
Detector not full in MA NA g
b.
Upscale
< 1 x 10 cps
< 1.5 x 10$ cps 5
i c.
Inoperative NA NA 3
j d.
Downscale 1-t cps 1 e-cps 0.7 o.5 4.
a.
Detector not full in MA NA j
b.
Upscale
< 108/125 of fu41 scale
< 110/125 of full scale c.
Inoperative NA NA 1
d.
Downscale 1 5/125 of full scale 1 3/125 of full scale
]
5.
_ 33.5 inches
_ 32 inches a.
Water Level-High g
6.
REACTOR COOLANT SYSTEM RECIRCULATION FLOW
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a.
Upscale i 108% of rated flow 1 111% of rated flow h
I D
l 1
l "The Average Power Range Monitor rod block function is varied as a function of recirculation loop flow n
[
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(W).
The trip setting of this function must be maintained in accordance with Specification 3.2.2.
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