ML20117M704
ML20117M704 | |
Person / Time | |
---|---|
Site: | Peach Bottom ![]() |
Issue date: | 06/13/1996 |
From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
To: | |
Shared Package | |
ML20117M699 | List: |
References | |
NUDOCS 9606180722 | |
Download: ML20117M704 (4) | |
Text
-.
J l
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 Surveillance Requirement 3.3.1.1.12" l
i List of Revised Pages 3.3-5 i
J B 3.3-33 4
n 1-9606100722 960613 PDR ADOCK 05000277 P
PDR.
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------------------
Neutron detecto's are excluded.
j 1.
r 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 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 cle b el h" vP h ave.ptav i.s n,4,pe.r{f A1e han s msy C o.s els h e.us << 8 af he le in l0 << Moc o a f ee g
\\
uF ~.ibwe 92LW<>e 4 e n. pw de<
,w PBAPS UNIT 2 3.3-5 Amendment No. 210 CxCvf on N.i u " w e fla n c t- }?epaire,.,f ive h 2, b
.O ' ' N..,... _
v A
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)
L
}
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 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 l
neutron detector sensitivity are compensated for by T
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 i
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 from MODE 1, if the 184 day or 18 month Frequency is not met i
l
)
per SR 3.0.2.
Twelve hours is based on operating experience and in consideration of providing a reasonable time in which
/ [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 j
l reasons (when the plant is operating, the radiation detectors are generally in a high radiation area; the steam tunnel). This exclusion is acceptable because the radiation 4
l detectors are passive devices, with minimal drift. The i
radiation detectors are calibrated in accordance with 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
~
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
!