ML18079B068

Forwards Util Calculations of Estimated Dose Resulting from Transfer of Spent Fuel from Unit 1 to Unit 2

ML18079B068
Person / Time
Site:	Salem
Issue date:	08/22/1979
From:	Wetterhahn M CONNER, MOORE & CORBER
To:	Beverly Smith NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD)
References
NUDOCS 7910090274
Download: ML18079B068 (4)

Text

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LAW OFFICES CoNNER,MooRE & CoREER 1747 PENNSYLVANIA AVENUE, N. W.

TROY B. CONNER, JR . WASHINGTON, D. C. 20006

.ARCH A. MOORE, JR~

HOBERT J. CORBER MARK J, WETTERHAHN DONALD J. BALSLEY, JR.

ROBERT ~. RADER (202) 833-3500 KEITH H. ELLIS

~OT ADMJ:TTED JN D. c. CABLE ADDRESS: ATOMLAW Barry Smith, Esq.

Off ice of the Executive Legal Director

u. s. Nuclear Regulatory Commission Washington, D. C. 20555 In the Matter Public Service Electric & Gas Company, et al.

(Salem Nuclear Generating Station, Unit 1)

Docket No. 50-272

Dear Mr. Smith:

As we discussed today, I am transmitting to you a copy of the calculations performed by Robert Douglas of Public Service Electric & Gas Company relating to the estimated dose resulting from transfer of spent fuel from Salem Unit 1 to Unit 2.

Sincerely, Mark J. Wetterhahn Counsel for the Licensee Enclosure cc: Gary L. Milhollin, Esq.

Mr. Frederick J. Shon

- Dr. James C. Lamb, III Chairman, Atomic Safety and Licensing Appeal Board Panel Chairman, Atomic Safety and Licensing Board Panel Richard Hluchan, Esq.

Richard Fryling, Jr., Esq.

Keith Onsdorff, Esq.

Sandra T. Ayres, Esq.

Mr. Alfred C. Coleman, Jr.

Mrs. Eleanor G. Coleman Carl Valore, Esq.

Off ice of the Secretary June D. MacArtor, Esq.

2 '1Ll 7910090 ,* lf !

G

l' Sstimated dose from moving and storing spent fuel from Unit !\o. } in t!~e t;nit lxo. 2 spent fuel pool.

l ) G operators to unload spent fuel cask, place in oecon pil ~nd wash down, place in trans!er pool and remove h~ad.

6 people x 3 hrs. x 3.5 mr/hr. 63 mr

2) & operators to load 2 fuel asscmbl)cs in a crack (one person to operate bridge, one lo operate crane, one to operate fuel handling lOOlS f ) }ieal th physic~ 8f!Q 2 tO record assemblies moved.

6 people x JO minutes/assembly x 2 assemblies x 3.5 mr/J1r.  :: 7.0 rnr

3) 6 pcopl c for l hour lo set cask }1eacJ.

6 people x l hr. x 3.5 mr/hr. 21 ;nr

4) 6 operators for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> {l hour to decon cas%, l hour to lo~d cask on truck) on average 10 mr/hr field.

6 people x 2 hrs. x 10 mr/hr. ..,. 120 mr Truck driver and assist&nt. oDDr.o:drnatelv .

15 n.irH1t.cs to drive from Unit l t.o Unit 2 fuel handling building (approx, ~ mr/hr.

tE cat),

2 people x 15 hrs. x 3.0 rni/hr.  ;

60

6) 6 operators to ~nload, rinse down, and place cn.sk in f ~iel tran$f ci* pooJ

( 2 hrs).

6 pE*ople >: 2 iirs; :.; } O mr/hr. .. 120 rnr

7) 6 people to rernovc cas~ head at transfer

,..Dool { ~Purox. l hr,).

6 people x l hr. x 3.5 rnr/hr. 21 nr 8} 6 opc~ators to move 2 fuel assemblies from cnsk to racXs (approx. 10 minutes/

'1. sscrr.tly)

• 6 people x ~o hrs. x 3.5 mr/hr. 7. o 1ii.r 7iO

j; **

STEP*

9) Ci operators for l liot;r to set cas.k head.

6 people x 3. S r:-tr /hr. x l hr. 21 mr l 0) 6 opera tors for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to cecon cas!~

and load on truck to i*cttn:n to Unit l~. l

{cask empty, approx, 1 mr/hr.).

6 people x 2 hrs. x l rnr/hr. = 12 mr ll) Truer.. driver and assj::;tant for appro:d-mately 15 minutes to return to Unit No. l at .5 mr/hr.

2 occple x lS hrs. x

. ~

.s rnr/hr. = . 15 rnr

<J*otal man-l*c;11 for rr.oving one cel.sk .395 man-rem (2 fuel assemblies) from Unit No. l spent fuel tool lo Unit No. 2 spent fuel pool.

For 56 assemblies @ 2 assemblies/trip, it requires 28 trips, Total man-rem for 28 trips l/3 core) is

.395 rnan-rcrn/trip x 28.  :::. 11.05 man-rem

I; J) The 3.5 r

ir/hr dose- rate usl?d in sc*veral ~tcps of the estimate is bas-ed on the dose rate at the fuel pool and transfer pool water sur!~ce due lo one spent fuel assembly being moved and the dose ~ate contribution from radionuclide's e:q:;~ctea to be _in the water.

2) The fuel shipping cask dose rates are based on 49 CFR 173 l5mi ts of 10 rn2:cm/hr at six feet from shipping cask~ It is feet that this is representa-tive of average radiation !ield operators will be cxposeo to.