ML20128L582
| ML20128L582 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 05/01/1985 |
| From: | Withers B PORTLAND GENERAL ELECTRIC CO. |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 8505310391 | |
| Download: ML20128L582 (3) | |
Text
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,- g Bart D Wthers Vce PresdcW May 1, 1985 Trojan Nuclear Plant Docket 50-344 License NPF-1 Mr. John B. Martin Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek CA 94596-5638
Dear Mr. Martin:
TROJAN NUCLEAR PLANT Cycle 8 Radial Peakina Factor Report Pursuant to Technical Specification 6.9.1.7, attached is a copy of the Cycle 8 Radial Peaking Factor Limit Report for the Trojan Nuclear Plant.
The peaking factor limits have not changed and no Technical Specification changes are required for Cycle 8 operation.
Sincerely, F r' v,
Bart D. Withers Vice President Nuclear Attachment c:
Mr. Lynn Frank, Director State of Oregon Department of Energy Director Nuclear Reactor Regulation Attn: Chief Core Performance Branch U.S. Nuclear Regulatory Commission Washington DC 20555 j
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bb 121 S W Sarron Sreet. Pocvd. O<egon 97204
l APPEN0lK A i
TROJAN UNIT 1 CYCLE 8 RADIAL PEAKING FAC10R LIMIT REPORT This Radial Peaking Factor Limit Report is provided in accordance with Paragraph 6.9.1.7 of the Trojan Nuclear Plant Technical Specif1-cations.
The F,y limits for RATED THERMAL POWER within specific core planes for Cycle 8 shall be:
' less than or equal to 1.89 for all core planes con-1.
F y taining bank 'O' control rods..and RTP 2.
F less than or equal to 1.66 for all unrodded core y
l Planes.
l These F,y(z) limits were used to confirm that the heat flux hot chan-nel factor F (z) will be limited to the Technical Specification values g
of:
F (z) =
[ U ) (K(z)] for P > 0.5 and.*
9 P
F (t) = [4.64) (K(z)] for P $ 0.5*
g assuming the most limiting axial power distributions expected to result from the insertion and removal of control banks C and D during opera-l tion, including the accompanying variations in the axial menon and power distributions as described in the ' Power Distribution Control and Load Following Procedures,' WCAP-8385. September,1974. Therefore, these i
F,y limits provide assurance that the initial conditions assumed in the LOCA analysis are met, along with the ECCS acceptance criteria of 10CFR50.46.
- K(z) - Figure 3.2-2 in Technical Specifications.
l L
g$
s 2.4 a
8.3 i
l i
2.0 1
~.
l 1.8 o
b l
l l
l 1.6 a
l I
l 1.4 i
1.2 1
i I
l 1.0 l
0 3
4 e
a 10 12 i
i BOTTOM j
Core Height (Feet)
FIGURE 1 TROJAN UNIT 1 CYCLE 8 MAXIMUM (FQ*%Ed VERSUS l'
CORE HEIGHT DURING NORMAL OPERATION
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