ML20085C707

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Proposed Tech Spec Table 3.2.C Re Control Rod Withdrawal Block Instrumentation & 4.2.C Re Surveillance Requirements for Rod Withdrawal Block Instrumentation
ML20085C707
Person / Time
Site: Cooper Entergy icon.png
Issue date: 10/03/1991
From:
NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20085C706 List:
References
NUDOCS 9110100218
Download: ML20085C707 (4)
v • d • e


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, to NLS9100581 Page 5 of 5 1

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NOTES: FOR TABLE 3.2.C (Continued) b.

APRM (1)

Mode switch not in-operate (2)

Less than 11 LPRM 'nputs (3)

Circuit boards not in circuit i

c.

RBM (1)

Mode switch not in operate (2)

Circuit boards not in circuit i

(3)

RBM fails'to null j

(4)

Less than required number of LPRM inputs for rod selected

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11. During spxral unloading / reloading, the SRM count rate will be below 3 cps for some period of time.

See Specification 3.10.B.

12. With the number of OPERABLE channels less than required by the Minimum Number of i

Operablo Instrument Channels / Trip System requirements, place the inoperabic channel in the tripped condition within one hour.

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13. AW is the difference between two-loop and single loop effective drive flow and is used for ningic recirculation loop operation.

AW-0 for two recirculation loop operation.

14. One set of power referenced RBM upscale trip settings (LTSP, ITSP and llTSP) is applied based on the lowest rated MCPR limit given in Specification 3.11.C.

The RBM power range setpoints control the enforcement of the appropriate upscale t rips over

- the proper core t.hermal power range as follows:

a.

All RBM trips.are automatienlly bypassed below the Low Power Setpoint (LPSP).

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The upscalc Low Trip Setpoint (LTSP) is applied at the LPSP and. up to the Intermediate Power Setpoint (IPSP).

c.

The upscale Intermediate Trip Setpoint (ITSP) is applied at the IPSP up to the liigh Power. Setpoint. (HPSP).

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The upscale liigh Trip Setpoint (llTSP) is applied at and above the llPSP,

15. The RBM is only required when core thermal power is 2 30% of rated power and a limiting control rod pattern (defined in Specification 3.3,B.5) exists. Requirements for operating with a

limiting control rod pattern are specified in Specification 3.3.B.S.b.

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16. RBM. trip level settings are relative to the initialization referenec - i e.nal of

.100/125 of full scale which takes pince upon cantrol rod. selection.

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COOPER NUCLEAR STATION TABLE 4.2.C I

SURVEILLANCE REQUIREMENTS FOR ROD WITHDRAVAL BIACK INSTRUMENTATION t

J Functional f

Function Test Freo.

Calibration Freo.

Instrument Check APRM Upscale (Flow Bias)

(1)

(3)

Once/3 Months Once/ Day APRM Upscale -(Startup Mode)

(1)

(3)

Once/3 Months Once/ Day

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APRM Downscale (1)

(3)

.Once/3 Months Once/ Day l

1 APRM Inoperative (1)

(3)

N.A.

Once/ Day i

1 RBM Upscale (Power Referenced)

(1)

(3)

Once/6 Months Once/ Day l

RBM Power Range (3)

Once/6 Months N.A.

i RBM Downscale (1)

(3)

Once/6 Months Once/ Day RFM Inoperative (1)

(3)

N.A.

Once/ Day IRM Upscale

' (1)

(2)

(3)

Once/3 Months Once/ Day i'

IRM Downscale (1) '(2)

(3)

Once/3 Months Once/ Day 4-IRM Detector'Not Full In (2)

(Once/oper-Once/Oper. Cycle (10)

Once/ Day ating cycle)

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l IRM Inoperative (1)

(2)

(3)

N.A.

N.A.

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SRM Upscale (1)

(2)

(3)

Once/3 Months Once/ Day l

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SRh Downscale (1)

(2).(3)

Once/3 Months Once/ Day j

SRM Detector Not Full In (2)

(Once/oper-Once/Oper. Cycle (10)

N.A.

- ating cycle) j SRM Inoperative (1)

(2).(3)

N.A..

N.A.

l Flow Bias Comparator' (1f (8)

Once/Oper. Cycle N.A.

l Flow Bias Upscale (1)

(8)

Once/3 Months N.A.

l-Rod Block Logic (9)

N.A.

N.A.

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RSCS Bypass (1)

Once/3 Months

.N.A.

j SDV High Water Level Quarterly Once/Oper. Cycle N.A.

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