ML20043B098

Forwards Radial Peaking Factor Limit Rept for Cycle 1, Containing F(Xy) Limits for All Core Planes Containing Bank D Control Rods & All Unrodded Core Planes

ML20043B098
Person / Time
Site:	Comanche Peak
Issue date:	05/15/1990
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-90180, NUDOCS 9005240187
Download: ML20043B098 (3)

Text

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M' .I MM -Log # TXX-90180 '

h j File # 915-916 1UELECTRIC-Williani J. cahill, Jr.

becutive Vice President U. S. Nuclear Regulatory Commissior.

Attn: ' Document Control Desk

' Washington, D. C. -20555 ..

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NO. 50-445L RADIAL PEAKING FACTOR LIMIT-REPORT-Gentlemen:

In accordance with CPSES-Technical Specification 6.9.1.6. TO Electric submits' -j herewith a copy of the subject report'for Cycle'1. .As required.:the report:

contains (1) the F xy limits for, all core planes containing Bank "D" contro.1 -

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rods and for all unrodded core planes and (2) a plot of the function- '

F T 0 . pre 1 vs. axial core- height with the limiting-envelope included,'

If you have any questions concerning this information,'please contact either i Mickey Killgore or Ray Ashley of the TV Electric staff;.'they can be reached by i phone at (214) 812-8271 or (214) 812-8415 - respectivaly. ,

Sincerely.-

i[k? #h' William J. Cahill, Jr.'

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Byt Tb N R.IDYWalker .

3 Manager of Nuclear Licensing RLA/vid '

Enclosure i

e - Mr.'R.'D. Martin, Region IV

.f Resident Inspectors, CPSES (3)

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9005240187 900515 ,pl m

PDR ADOCK 05000445 P PDC i 400 North Oi; Street L B,81 . Dallas, Texas 75260 30 *

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'i Enclosure' to TXX-90180 Page 1 of 2

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Radial Peaking . Factor Lim % Report f

This Radial Peaking Factor Limit Report is provided in accordance with Para-graph 6.9.1.12 of the Comanche Peak Unit'l Nuclear Plant Technical Specifications.

The Fxy limits' for PATED THEPyAL POWER within specific core planes .for Cycle 1 shall be..

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1. F y less than or equal to 1.71 for all core planes.containing i . bank "D" control -ods, and a

2. F,R less than or equal tt 1.55 for all unrodded core planes.

These Fxy(z) limits were used to confirm that the heat flux het channel factor Fg(z) will be limited to the Technical Specification values of:

l Ff(z)5[232][K(2)] for P > 0.5 and, F(:)5[4.64)[K(z))

g for P 5 0.5 l assuming the most limiting axial power distributions expected to result from the insertion and removal of, Control Banks.B,'C. and D during operation, includinc the accompanying vari,ations in the axial xenon and power distributions as described

'in the " Power Distribution Control and i. cad Following Procedures", WCAP-5403,

, September, 1974. Tnerefore, these F' limits provide assurance that the-initial:

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conditionsassumedintheLOCAanalys5saremet,alongwiththeECCSacceptance.

criteria of 10CFR50.46. 1 T

See Figure 1 for a plot of [Fg ,pRei)vs.AxialCoreHeight.

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1 1 2 Enclosure to TXX.90180 3 M Page 2 of 2

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