ML20113G850

Proposed TS 5.3.2 Re Reactor Core - Control Rods

ML20113G850
Person / Time
Site:	Davis Besse
Issue date:	04/30/1992
From:	CENTERIOR ENERGY
To:
Shared Package
ML20113G846	List: ML20113G843 ML20113G849 ML20113G850
References
NUDOCS 9205130003
Download: ML20113G850 (2)

Text

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Docket Numbar 50-346 License Number NPF-3 Serial Number 2022 j ef- Attachment 7

Page 6 4 .

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DISIGN F?tTURES a C . '-

jOtSION::E5!URE AND Tiv t*ATURI tl ..

5.2.2 The react:r c:r.tatnment :utleing is castgnec ano snail te main siten f:r a maxte:um internal pressure of ao estg ans a tem:erature of 254'F.

(! .3 5 atACTOR CORE i

FUtl ASSEMBLIES l

l

5.3.1 The r*

of areactor core snail clad contain 177 witn fuel an assmoltes. Each assmob shall

censist metrix of Zircaloy fuel ross initial c

ecesisten of

• : na%ral or slightly enrienen urantum et:xico (U02) as fuel material, with a

maximum enriement cf 3.5 weignt cercent U-235. .1=ttee suestttutt

ns of stain.

' lus steel filler roes fer fuel ecos, in ace:rcance witn a::roveo a::licattens l {

• Of fuel roc configurations, may De useo. Fue) assemolies snall be limited to '

, tnese fuel designs tnat nave oeen analyzen witn a:clict:le NRC staff a::reven I, c :es ano cetn:cs ano snown ey tests Or analyses t: ccm:ly witn all ful safety '

. Castgn cases. Eacn fuel r c snali nave a namnal acttve fuel lengtn f 7 l A inenes.and snail c:ntain a maximum total weignt of 2500 gram; uranium,

_{d'Ni20LR003 _

CO r ' , 5. ~

The react:r c:re snall contain 53 safety and regulating and 6 antal power snacing (APSR) control recs. The saf ety anc regulating control recs snall

c ntain a nominal 134 intnet of abscrear matarial. The n

r:tnal values of

asser:gr material shall be 60 cercent silver.15.cercent inctw. ana 5 :ercenc

caer.tum. All c ntt

1 re:s snail to clad with stainless steel tuning. ~he APSRs l

snall-::ntain a neennal 63 inenes of a: sorter eatartal a netr icwer enes. The

'l cr:er material fer tne APSRs snall be 100 :ercent In::nel-600. j 5.4 :9CTOR COOLANT SYST!M 3

.T it!5IGN pots 5 Uni ANO i M ERATUtt feh&C N u%

5.4.1 - The react:r c:clant system ts :esigne: ans snall te matntainec:

\

OQM

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In act:rcance with tne cece recuirments scec1fied in Sectt:. 5.2

., of t..e F5AR. tta allcwance f:r nemal :egranatt:n :ursuant t:

applica:la Suryeillance Requu .ments.

i

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/, 5. For a cressure of 2500 :sig. and i ,.

For a temerature of $50'F. excact 1:r tne pressurizar an

/ pressurt:er surge itne wnten is 670*F.

i "AV15 BE51I, WIT *, 54 knenement 'tc. II.I3.123.I30.I15 $

9205130003 920430 PDR ADOCK 05000346 P

PDR

Docket Number 50-346 License Number NPF-3 Serial Number 2022

' Attachment Page 7 Current Vording 5.3.2 The reactor core shall contain 53 safety and regulating and 8 axial power shaping (APSR) control rods. The safety and regulating control rods shall contain a nominal 134 inches of absorber material.

The nominal values of absorber material shall be 80 percent silver, 15 percent indium and 5 percent cadmium. All control rods shall be clad with stainless steel subing. The APSRs shall contain a nominal 63 inches of absorber material at their lover ends. The absorber material fot the APSRs shall be 100 percent Inconel-600.

Proposed Vording The reactor core shall contain 53 safety and regulating control rod assemblies (which may be either standard or extended life control rod assemblies) and 8 axial power shaping roc (APSR) assemblies. Standard control rods shall contain a nominal 134 inches of absorber material.

The extended life control rods shall contain a nominal 139 inches of absorber material. The nominal values of absorber material for the safety and regulating control rods shall be 80 percent silver, 15 percent indium, and 5 percent cadmium. Standard control rods and APSRs shall be clad with stainless steel tubing. The extended life control rods shall be clad with Inconel. The APSRs shall contain e nominal 63 inches of absorber material at their lower ends. The absorber material for the APSRs shall be 100 percent Inconel.

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