ML20211P360

Concurs W/Assessment That Min Catalyst Exposure of 25% or 50 G,That Can Occur in Canister Dewatered to 50% Void Vol,Will Still Have Acceptable Margin of Safety in Gas Recombination Capacity,Per Util

ML20211P360
Person / Time
Site:	Crane
Issue date:	12/12/1986
From:	Travers W Office of Nuclear Reactor Regulation
To:	Standerfer F GENERAL PUBLIC UTILITIES CORP.
References
CON-NRC-TMI-86-115 NUDOCS 8612190050
Download: ML20211P360 (3)

Text

M

~~

W -

~

[

DISTRIBUTION

'k DN 50-320

p. j e.

NRC PDR g.z Local PDR

..J DCS w

TMI Site r/f December 12, 1986 TMI HQ r/f-t.g' -

MTMasnik NRC/T11I-86-115 WDTravers i e Docket No. 50-320 RHall i't 3 FMiraglia llr. F. R. Standerfer JThomas ji, Vice President / Director, THI-2 CCowgill

a(

GPU Huclear Corporation TMoslak P. O. Box 480 LChandler W

Hiddletown, PA 17057 ACRS IE-

Dear ftr. Standerfer:

r,7 M-Town Office

Subject:

Defueling Canister Catalytic Reconbiners 1,

Reference:

Letter 4410-86-L-0193, F. Standerfer to W. Travers, Canister Dewatering, dated Havenber 10, 1986, a

(

,I The referenced letter inforraed the NRC staff that due to asymetrical locations and manufacturing tolerances in the placenent of the catalytic l'

recombiners in the defueling canisters, a 50 percent canister void voluue does not provide for exposure of 50 percent of the catalyst in scoe canister orientations. The safety evaluations related to canister desi preparation for shipr.:ent stated that 100 grans (or 50 percent)gn and canister of the 6

installed catalyst would be exposed to the gas space of the canister f

regardless of canister orientation.

G',

He have reviewed the referenced letter and concur with your assessment that the minimum catalyst exposure of 25 percent, or 50 grams, that can occur in a cdnister dewatered to a 50 percent void volune, will still have an acceptable nargin of safety in its gas reconbination capacity. This reduced catalyst exposure is in conformance with the cask license, in that the license conditions require that a " sufficient" volume of catalyst be exposed.

The remaining aspccts of canister dewatering and ntninua void volume discussed in your letter are still under review by the staff. We uill address these

[

aspects in future Correspondence.

.z.

Sincerely, y

original signed by

'e" John Thomas for:

1 Willian D. Travers j

Director M

e612190050 861212 THI-2 Cleanup Project Directorate PDR ADOOK 05000320 l,~

,t p

PDR g

. I M.I.C..

TM.IC.PD.. h m

'=>

. } ""'"""

J.Th,o,,,,,,gs WTravers

../gss 12/.ges 12 une ronu sis i 0-80) NRCM 0240 OFFICIAL RECORD COPY

-. - _. - _ -_ - -. ~..

P!

n.

7

/

!!r. F. R. Standerfer December 12, 1986

/

./

cc:

T. F. Demitt R. E. Rogan S. Levin J. E. Fre'1 J. J. Byrne A. W. !! iller Service Distribution List (seeattached) 3 OF FICE )

suanAw b r

DATE)

N.;C FORM 318 (10 80) NRCM 0240 OFFICIAL. RECORD COPY

TMI-2 SERVICE LIST Dr. Thomas Murley Regional Administrator U.S. Department of Energy U.S. Nuclear Regulatory Comission P.O. Box 88 631 Park-Avenue Middletown, PA 17057-0311 King of Prussia, PA 19406 David J. McGoff Sheldon J. Wolfe, Esq., Chairman Office of LWR Safety and Administrative Judge Technology Atomic Safety and Licensing Board Panel NE-23 U.S. Nuclear Regulatory Comission U.S. Department of Energy Washington, D.C.

20555 Washington, D.C.

20545 Dr. Oscar H. Paris William Lochstet Administrative Judge 104 Davey Laboratory Atomic Safety and Licensing Board Panel Pennsylvania State University U.S. Nuclear Regulatory Conuission University Park, PA 16802 Washington, D.C.

20555 7

Frank Lynch, Editorial Dr. Frederick J. Shon The Patriot l

l Administrative Judge 812 Market Street l

Atomic Safety and Licensing Board Panel Harrisburg, PA 17105 i

U.S. Nuclear Regulatory Comission Washington, D.C.

20555 Robert B. Borsum Babcock & Wilcox Dr. Judith H. Johnsrud Nuclear Power Division Environmental Coalition en Nuclear Power Suite 220 433 Orlandr Avenue 7910 Woodmont Avenue State College, PA 16801 Bethesda, MD 20814 Ernest L. Blake, Jr., Esq.

Michael Churchhill, Esq.

Shaw, Pittman, Potts, and Trowbridge PILCOP 2300 N Street, N.W.

1315 Walnut Street, Suite 1632 Washington, D.C.

20037 Philadelphia, PA 19107 Atomic Safety and Licensing Board Panel Marvin I. Lewis U.S. Nuclear Regulatory Commission 7801 Roosevelt Blvd. #62 Washington, D.C.

20555 Philadelphia, PA 19152 Secretary Jane Lee U.S. Nuclear Regulatory Comission 183 Valley Road Washington, D.C. 20555 Etters, PA 17319 Frederick S. Rice, Chairman Walter W. Cohen, Consumer Dauphin County Board of Commissioners Advocate Dauphin County Courthouse Department of Justice i

Front and Market Streets Strawberry Square,14th Floor Harrisburg, PA 17101 Harrisburg, FA 17127 Thomas M. Gerusky, Director Mr. Edwin Kintner Bureau of Radiation Protection Executive Vice President Department of Environmental Resources General Public Utilities i)

P.O. Box 2063 Nuclear Corporation I

Harrisburg, PA 17120 100 Interpace Parkway Parsippany, NJ 07054 Ad Crable Lancaster New Era US Environmental Prot. Agency 8 West King Street Region III Office Lancaster, PA 17601 ATTN:

EIS Coordinator Curtis Building (Sixth Floor) 6th and Walnut Streets Philadelphia, PA 19106

_ _ _ _ _ - _ - _