ML20091F829
| ML20091F829 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/20/1991 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20091F834 | List: |
| References | |
| NUDOCS 9112090390 | |
| Download: ML20091F829 (6) | |
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9112090390 911120 PDR ADOCK 05000445 P
PDR COMANCHE PEAK - UNIT 1 3/4 2-5 Amendment No. 6
i POWER DISTRIBUTION LIM 115
$_URVEILLANCE REQUIREMENTS (Continued) f.
With measurements indicating C
maximum IFq (Z) h over Z (K(Z) /
C has increased since the previous determination of Fq (Z) either of the following actions shall be taken:
C 1)
Increase Fg (Z) by 2% snd verify that this value satisfies the relationship in Specification 4.2.2.2d, or C
2)
Fg (Z) shall be measured at least once per 7 Effective Full Power Days until two successive maps indicate that C
maximum
[Fq (Z) is not increasing, over Z
( K(Z) )
g.
With the relationships specified in Specification 4.2.2.2d above not being satisfied:
1)
Calculate the percent that F (Z) exceeds its limits by the fol-9 lowing expression:
3 C
maximum Fq (Z) x W(2)
RTP f
cver Z F
x K(Z)
-1 x 100 for P > 0.5 s
[ maximum
}C(7)xg(7) i
~
RTP I
over Z F
x K(2)
-1 q
x 100 for P 5 0.5, and
..)
u 2)
The following action shall be taken:
Within 15 minutes, control the AFD to within new AFD limits which are determined by n.ducing the AFD limits specified in the CORE OPERATING LIMITS REPORT by 1% AFD for each percent F (2) exceeds 9
its limits as determined in Specification 4.2.2.2g.1.
Within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, reset the AfD alarm setpoints to these modified limits, COMANCHE PEAK - UNIT 1 3/4 2-7 Amendment No. I, 6
d e
POWER DISTRIBUTION LIMITS i
SURVEILLANCE REQUIREMENTS (Continued) h.
The limits specified in Specification 4.2.2.2c are applicable in all core plane regions, i.e. 0 - 100%, inclusive.
i.
The limits specified ir Specifications 4.2.2.2d, 4.2.2.2f 4.2.2.2g, above are not applicable in the following core p, lane and regions:
1.
Lower core region from 0 to 15%, inclusive.
2.
Upper core region from 85 to 100%, inclusive.
4.2.2.3 When F (Z) it, measured for reasons other than meeting the require-n ments of Specification 4.2.2.2 an overall measured F (2) shall be obtained 9
tolerances and further int-;ased by 5% to account for mea COMANCHE PEAK - UNIT 1 3/4 2-7a Amendment No. 6
-E
b POWER DISTRIBUTION LlHITS N
3/4.2.3 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR F g gMITlH3 CONDITION FOR OPERATION N
3.2.3 F shall be limited by the following relationship:
g F
5FRTP(1.0 + Pf (1.0 - P))
H 3g Where; F P = the FN limit at RATED THERMAL POWER (RTP) specified g
in the CORE OPERATING LIMITS REPORT (COLR),
specified in the PF
= the power factor multiplier for F H AH COLR, and THERMAL POWER RATED THERMAL POWER APPLICABILITY:
MODE 1.
ACTION:
With F exceeding its limit:
g a.
Within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> either:
RestoreFhtowithintheabovelimit,or 1.
2.
Reduce THERMAL POWER to less than 50% of RATED THERMAL POWER anc reduce the Power Range Neutron Flux - High Trip 5etpoint to F
less than or equal to 55% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of initially being outside the above limit, verify b.
has been restored to within through incore flux mapping that F H the above limit, or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, Identify and correct the cause of the out-of-limit condition prior c.
to increasing THERMAL POWER above the reduced THERMAL POWER limit required by ACTION a.2 and/or b., above; subsequent POWER OPERATION is demonstrated, through incore flux may proceed provided that F H mapping, to be within its limit prior to exceeding the following THERMAL POWER levels:
1.
A nominal 50% of RATED THERMAL POWER, 2.
A nominal 75% of RATED THERMAL POWER, and 3.
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of attaining greater than or equal to 95% of RATED THERMAL POWER.
l COMANCHE PEAK - UNIT 1 3/4 2-8 Amendment No. 6
t D
ADMINIS_TMT.IVECONTROLS CORE OPERATING LIMITS REPORT (Continued)
WCAP-10216-P-A, " RELAXATION OF CONSTANT AXIAL OFFSET CONTROL FQ SURVEIL-LANCE TECHNICAL SPECIFICATION," June 1983 (W Proprietary).
(Methodology for Specification 3.2.2 Heat Flux Hot Channel Factor (W (z) surveillance requirements for F Methodology).)
g WCAP-8200, "WFLASH, A FORTRAN-IV COMPUTER PROGRAM FOR SIMULATION OF TRAN-SIENTS IN A MULTI-LOOP PWR," Revision 2, June 1974 (W Propi tetary).
(Methedology for Specification 3.2.2. - Heat Flux hot Channel factor.)
WCAP-9270-P-A, " Westinghouse ECCS Evaluation Model, February 1978 Version,"
February 1978 (W Proprietary).
(Methodology for Specification 3.2.2. -
Heat Flux Hot Cliannel Factor.)
The core operating limits shall be determined so that all applicable limits (e.g., fuel thermal-mechanical limits, cove thermal-hydraulic limits, ECCS limits, nuclear limits such as shutdown ma' gin, and transient and accident analysis limits) of the safety analysis are met.
The CORE OPERATING LIMITS REPORT, inclu6ing any mid-cycle revisions or supplements thereto, shall be provided upon issuance, for each reload cycle, to the NRC Document Control Desk with copics to the Regional Administrator and Resident Inspector.
SPECIAL REPORTS 6.9.2 In addition to the applicable reporting requirements of Title 10, Code of Federal Regulations, special reports shall be submitted to the Regional Administrator of the Regional Office of the NRC within the time period speci-fied for each report.
6.10 RECORD RETENTION 6.10.1 In addition to the applicable record retention requirements af Title 10, Code of Federal Regulations, the following records shall be retained for at least the minimum period indicated.
6.10.2 The following records shall be retained for at least 5 years:
a.
Records and logs of unit operation covering time interval at each power level; b.
Records and logs of principal maintenance activities, inspections, repair, and replacement of principal items of equipment related to nuclear safety; COMANCHE PEAK - UNIT 1 6-20a Amendment No. E, 6