ML20154F927

Forwards Request for Addl Info Re Spent Fuel Pool Enrichment Increase to 4.85 Weight Percent U-235

ML20154F927
Person / Time
Site:	Beaver Valley, 05000000
Issue date:	09/15/1988
From:	Hodges M Office of Nuclear Reactor Regulation
To:	Stolz J Office of Nuclear Reactor Regulation
Shared Package
ML20151V292	List: IA-88-497, Forwards Safety Evaluation Accepting Proposed Reracking of Spent Fuel Storage Pools from Criticality Standpoint.Fuel Enrichment May Be in Conflict W/Table 54 of 10CFR51 & Data Used by Util to Assess Environ Effects.Salp Input Also Encl ML20151V290 ML20154F927 ML20195G296 ML20195G389 ML20195G536 ML20195G546 ML20195G550 ML20195G553 ML20195G616 ML20196B968
References
FOIA-88-497 NUDOCS 8809200178
Download: ML20154F927 (2)

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.l. Stoir, Project Director Pro.iett Directorate 1-4 Division of Reactor Project - 1/11 FROM:

M. b!. Hodges, Chief Reactor Systens Branch Division of Engineering A Systems Technology fl'FJECT:

REQUEST FOR ADDITIONAL INFOP:tATION ON PEAVER VAll.FY ? SPENT FUEL POCL FNRIClif t[NT I NCRE AST.

The Peactor Systern. Granch recuests the enclo',cd additional inforriation in i

order to continue cur review Of the DeJver Valley Unit 2 request (nr an enrich <nt increase tn 4.85 veicht percent (I.735.

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REQUEST FOP. ADDITIONAL INFORMAT10N BEAVER VALLEY UNIT 2 SPENT FUEL POOL ENRICHMENT INCREASF 1.

Describe the fabrication process for the Boraflex asserblies.

Indicate whether a sincie sheet or inultiple shPets of Boraflex were used in each poison assembly. Also, indicate whether or not the Borafier sheets are f astered to or per.manently glued onto any surf ace or structure.

2.

Describe the reasuring techniques for detecting degraded P.orafler speciraens in the inservice surveillance progran.

3.

Describe the correctiva actions to be taken if degraded Eoraflex specimens or absorber is found in the spent fuel pool.

'eScritie hn. the suh. region of Region 1 whiCh can presently store fuel up 4

j to 3.6 weight percent U-235 with no physical restriClient will be distinguished end separated from the Sub. region of Reglen 1 which will 5tnre full with enricFrents higher than 3.( weight percent in a 3 out of 4 cor.f igura tinr.

5.

In order to prevent fuel loading errors iri spent fuel pools with storace configuration restrictions, the staf f has previously requested physical blockage of storage locations which are prohibited from containinc any fuel.

Plea:e discuss tb.e acceptability of physically blocking the 4th cell in each 3 out of 4 cell array in kegion 1 rather than relying solely on adnini$trat(ve procedures to prevent misloadin95.

6.

What it the reactivity effect nf neqlecting the axial and radial di$tributions of burt.up in the Peqicn 2 fuel assertlies?

7 Iistutt er,y proceduret, or phy%1 cal re$traintt wt ich requite the mover'nnt t, f fuel to ron burnuo dependent locations before roverer.t to burnup de;endent rocks.

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$t.culd revitfd Itch Spec C.f.) refer to the UfSAP rather than the FSAR?

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