ML20117M704

Proposed Tech Specs,Sr 3.3.1.1.12,for APRM Flow Biased High Scram Function,Allowing SR to Be Performed W/O Entering Associated Conditions & Required Actions for Up to Six H Provided Core Flow at or Above 82%

ML20117M704
Person / Time
Site:	Peach Bottom
Issue date:	06/13/1996
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20117M699	List: ML20117M698 ML20117M704
References
NUDOCS 9606180722
Download: ML20117M704 (4)

Text

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t i ATTACHMENT 2 PEACH BOTTOM ATOMIC POWER STATION UNIT 2 4

Docket No. 50-277 1 License No. DPR-44 Facility Operating Ucense Change Request l ECR 96-02011 1

"APRM Flow Biased High Scram 1 Surveillance Requirement 3.3.1.1.12" l

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List of Revised Pages 3.3-5 J i

B 3.3-33 l

4 n 1-9606100722 960613 PDR ADOCK 05000277 P PDR. i

. RPS Instrumentation 3.3.1.1 SURVEILLANCE REOUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.3.1.1.9 Perfom CHANNEL FUNCTIONAL TEST. 92 days SR 3.3.1.1.10 ------------------NOTE-------------------

Radiation detectors are excluded.

Perform CHANNEL CALIBRATION. 92 days SR 3.3.1.1.11 ------------------NOTES------------------ -

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1. Neutron detecto's r are excluded. j

2. Not required to be performed when entering MODE 2 from MODE 1 until ,

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after entering MODE 2.  ;

Perform CHANNEL CALIBRATION. 184 days  :

1 SR 3.3.1.1.12 ------------------NOTES------------------

1. Neutron detectors are excluded.

2. For Function 2.a, not required to be performed when entering N0DE 2 from MODE 1 until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after entering 4... MODE 2.

Perform CHANNEL CALIBRATION. 18 months SR 3.3.1.1.13 Verify Turbine Stop Valve-Closure and 24 months Turbine Control Valve Fast Closure, Trip 011 Pressure-Low Functions are not bypassed when THERMAL POWER is 2: 30% RTP.

3, ne & + ten 2. f, us,] ccyledson o( e l es< ye M eb in l0 << Moc o a f ee C o.s.ptav ave els h e.usi.s<<n,4,pe.r{f 8 af he A1e~ han le s msycle gb el h" vP h

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4 e n. pw de< ,w uF .ibwe 92LW<>e PBAPS UNIT 2 3.3-5 Amendment No. 210 CxCvfbon N .i u " w e fla n c t- }?epaire, .,f ive h 2, , ,

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RPS Instrumentation

(

B 3.3.1.1

)

i BASES l SURVEILLANCE SR 3.3.1.1.10. SR 3.3.1.1.11. SR 3.3.1.1.12.

REQUIREMENTS SR 3.3.1.1.15. and SR 3.3.1.1.1% (continued)

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calibrations, consistent with the current plant specific

! setpoint methodology. SR 3.3.1.1.16, however, is only a i calibration of the radiation detectors using a standard j i radiation source, j 4

j As noted for SR 3.3.1.1.11 and SR 3.3.1.1.12, neutron l

' detectors are excluded from CHANNEL CALIBRATION because they are passive devices, with minimal drift, and because of the

! difficulty of simulating a meaningful signal. Changes.in neutron detector sensitivity are compensated for by T l

performing the 7 day calorimetric calibration (SR 3.3.1.1.2)

' _ and the 1000 MWD /T LPRM calibration against the TIPS (SR 3.3.1.1.8). A second note is provided for SRs 3.3.1.1.11 and 3.3.1.1.12 that allows the APRM and IRM SRs to be performed within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> of entering MODE 2.from MODE 1. Testing of the MODE 2 APRM and IRM Functions cannot

be performed in MODE 1 without utilizing jumpers, lifted i leads or movable links. This Note allows entry into MODE 2 l l from MODE 1, if the 184 day or 18 month Frequency is not met i

) per SR 3.0.2. Twelve hours is based on operating experience and in consideration of providing a reasonable time in which j

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/ [p to_ complete _the_SR.A.As noted for SR 3.3.1.1.10, radiation detectors are excluded from CHANNEL CALIBRATION due to ALARA reasons (when the plant is operating, the radiation

, detectors are generally in a high radiation area; the steam 4 tunnel). This exclusion is acceptable because the radiation l

detectors are passive devices, with minimal drift. The i radiation detectors are calibrated in accordance with l

! SR 3.3.1.1.16 on a 24 month Frequency. )

i j The 92 day Frequency of SR 3.3.1.1.10 is conservative with

respect to the magnitude of equipment drift assumed in the i setpoint analysis. The Frequencies of SR 3.3.1.1.11 and j SR 3.3.1.1.12 are based upon the assumption of a 184 day or  ;

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an 18 month calibration interval, respectively, in the i

determination of the magnitude of equipment drift in the

setpoint analysis. The Frequencies,of SR 3.3.1.1.15 and SR 3.3.1.1.16 are based upon the assumption of a 24 month calibration interval in the determination of the magnitude

of equipment drift in the applicable setpoint analysis.

(continued) i i

PBAPS UNIT 2 B 3.3-33 Revision No. 1 J

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