ML19224B918
| ML19224B918 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/21/1979 |
| From: | Mcgrath P NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Scroggins R NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML19224B914 | List: |
| References | |
| NUDOCS 7906280009 | |
| Download: ML19224B918 (3) | |
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NAY 211979 s
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6 MMXWOLH FOR:
R. M. Scroggins, Directar, ABCS, RES FKH:
P. E. !bGrath, Acting Dim.aws., PAS, RIS Stanrrs
'DGE HIIE ISIRD REUMD ACTICIS As ra3uestal in your >by 15, 1979 sama.undum, additicnal info:nntion on P
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PAS actirns related to 'IMI is puridcd belm. Based on a en1urri betwoon P. ftGrath, PAS and E. K. Cbrncll, EIX), we have pinridal this infacTution in an abbtwiatcd facn arri have not used tho *1MI J rtiv!. ties Inventary Pocu" thst ms pMM.
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1.
Doasy Boat and Fissirn Product Inventxry - Calculations were rado at Sandia to detmine tin finairn predtx:t inventary and decay E
beat as a functirn of tim after shutdmn using the CRIGEN cacerter y
cada. 'Ihis has been cxrpletod. Effort irrmived 3-5 saan-dayn Rwdin effort and 1 nnn day PAS effart at a cost of $5-10K.
(Otzrtacts:
J. Mirrhy, PAS: D. Benett, 97vlia)
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2.
Chre melt analysis - Batplla Ocitrius Iabaratorf es analyzcx1 the potetial otnscxpmace of care nelt accidcr.ts Wiich coull have L
enurred if additional failures ocrs.xrred. In milition, BCL l.,
examined tin potential results of initiating natural circulat.2cn I"
eml i ng.
Rark is casertial.ly umMe ard is being <b'nmtal.
He estinnte it involved pptacimately 50-75 %s of BCL effort at a coat of appucinately S45K and agrucinately 1 nnn-mcnth of PAS cffort.
(CXntacts:
H. Ctznningha::1, PAS; R. Dconi2rJ, DCL) 3.
U2 Gring - Shriton mee perferwd at NL ard Sardia cn the rate of rtroval of U2 frun the primry system using 'he lotdcun systxxn; the work is rrmir tod. Appcucinntely 4 mn-days ocntractor s.
affart ard 2 nnn-days PAS cffort were involycd. Estinated coat is $1-2K.
(C1x: tacts:
J. MIrphy, PAS; D. Bmnatt, Sarrlia; D. Webster, RE) 4.
Cintalmxmt Vmting Cbrx:rytnal Doaign - A v.au.yhzal rh2ign to
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permit ventirrJ of the exmtalscent atsaphare in a ocmtrn11,v1 nnnner ms develcpod by Battolla, C hxtus fahvatorios. Harpower estimates are 1 msn week BCL an! 2 non-days PAS. Estimated cxast g'r, '.
is $5K.
(C%ntacts:
R. DiSalvo, PAS; R. Denning, BCL)
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g o.ts >
- a NEC FORM 318 (9 76) N1CM 0240 A v. e. eovann esswv rassenne orrecs... eae.es4 38*
7906280aq 257 11,2
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I R. M. Scroggins MAY 211979 5.
Hydrogen detonaticu cnalysis - Sardia cxxducted analyses of the L
quasi-static cw.ui--ure and stock wtra Wilch might result frtrn a ttydwp> dotcnation within the teactar vessel. Effcrt Q~.
s imolved espraKimtaly 2 msn-Seeks of San (11a effcrt ani 1 randay PAS effort at a coot of $5-10K and is catpInto.
(Ocntacts:
M. CLnWm, PAS; D. Mrloskey, Sarxiin) 6.
Evacusticn Cbntingency Plannig - Dmnt trecs were mnstnoted and censogaanco estinntes made fcr various accident Ecmarios which hal the potmtial fcr ocrurring at 'IMI.
PAS effort was agawdnntaly 13 man-days with 1/2 unn-day ocntractor assistanoe. It has been carpletal.
(QJntact:
J. lixrphy, PAS)
"ff 7.
Natirral Circt latim Dciris B:x10]oliga - Analyson were conhx: tad at CHL, with assistance frun TDC ard RL, cm the heat transfer ard hydrulyntnic cxxwWraticns associated with natitral circulatica cooling of a detris bcrl. Effcrt is mlate at an estimtsi mat of $10-15K. A;procinntely 6 man-wocks of cenL.m effort and 3 man-chys of PAS effcrt wcre involved.
(Oxitacts:
M. Cunninghern,
[b PAS; Mario Fcutana, GtE)
Sensitivity & milaticns fcr u.ma.vucy rcegnse plans - A series of 1 -
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c 1mlaticns were performod to evaluata the intact of the various evacuation plans that had been propooed fcr 'IMI.
utis infannation was transmittzd to the Offim of State P%um. The results were in tenns of expected mst (BGS asstxqtlcns) versus latent effects.
The effcrt involvcd dw.wdmately 4 tan-days PAS offert.
(G.ada t:
i R. Bloni, PAS) 9.
Calculaticn of Dcpected ypilaticn dose frun the acutal rulcnse -
An attmpt was mede to estimte the source term in the amdliary p
hilleling as a functicn of tino ard to then ocxq11tc the dose ratn offsite ard the expECtod PC{UlatiCn dOGO. 'IhO source COuld be ED r-variahla that the population dose P mlaticn was not perfermd.
l Utis work was dcne fcr Hal Peterson's grtup. Estimatas were mia of the Iodine ard Xmcn amrffcr activity as a functicn of timo in the auxiliary bi41 Ming. The task required apgrczmimtaly
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6 man-days PAS effort.
(Ox1 tact:
R. Blcxd, PAS)
- 10. Effects of chanirni additivos - Socping & mlaticns were calo 1
cn the effect of cbrehl adiiticna tn 'IMI-2 after the transient en unter chenistry and disolved gas. Aepratimately 1 nnn-day PAS f.
offcrt was involved.
(Cantact:
J. liIrply, PAS) 1e w
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P I,P' 4
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NRC PORM 310 (9-76) NRCM 0240 A u. a. eovenument paiemme orrecs. un - eae.saa 257 113 n-
4 MAY 21 1979 R. H. Scroggins 11. On-site support - Approximately 53 man-days effort were expended L
on-site by PAS.
Efforts included analysis of trends in process tv.
Variables; maintaining comunicatioh links between the NRC operations ff y'
trailer, HQ control room, and other NRC personnel; procedure review; contingency planning regarding alternate methods of decay heat removal if additional components sficuld fail; and preliminary analyses of the nature of plant conditions and recovery techniques, etc.
(Contact:
H. Taylor, PAS)
- 12. Prepared event ti en nn loss of feedwater transients for B&W, m
C.E. and W designs and prepared sunnary listing on lessons learned l-at/from Tffl. Ap (Contact:
ip:?
H. Taylor, PAS) proximately 30 man-hours PAS effort.
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- 13. Performed review and reliability evaluation of auxiliary feedwater l
systems on operating W_ and C.E. NRS as part of a joint NRR/RES effort. Reconnendations on the existing designs were given to NRR. Approximatel 280 man-hours PAS effort.
(Contact:
M. Taylor, l-M. Cunningham, PAS LA.
criginal signed by Peter E. McGrath F
P. E. McGrath, Acting Director Probabilistic Analysis Staff Office of Nuclear Regulatory Research Distribujion:
t-Subjectw Q
u PAS Rdg CIRC CHRON Murphy, J. Rdg McGrath Rdg Cunningham cpy Taylor cpy Blond cpy
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DiSalvo cpy r
1 a
9%
R45)'/p RES/ PAS /AD Jdu
- srd PEMcGrath
/Si/79 5/2i/79 N MIM 318 (Mf) NRCM 0240 A us s. oovsemasswe rstiserine oye s. teve - sae.esa 257 114
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APR 2 31979 E
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KIDEBUEDI FOR: Robert J. Budnitz. Deputy Director f
Office of bclaar Regulatory Research 5,
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TNtU:
Anthony R. Buhl. Director Probabilistic Analysis Staff I
Office of Aclear Regulatory Resaarch
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l FRCM:
Raycond D1 Salvo 5
Probabilistic Analysis Staff l
Office of Nelear Regulatory Research h
SU3 JECT:
YENTED CONTAIHMENT CONCEPTUAL DESIGN AT THREE j
MILE ISLAND - 2 l
Reference:
R. J. Bodnitz to File Same Subject. April 10, 1979.
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The following actions were taken in response to the referer.ce can:
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1.
On April 10, 1979 Sandia La'ooratories and Battelle Columbus Laboratories f
assembled task forces to work on the problen at my request.
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p 2.
BCL provided calculations of containment atmospheric tenditions and airborne radioactivity as functions of time assuming core melt.
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l 3.
Sandia developed several alternative schemes for venting and recirculating I,
the containment atmosphere.
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4.
Mark Cunninghas; and I defined the functional requiraaents of the systee, l
clarified the constraints on construction and operation, and discussed i
i with b Telford (kRC) and Jim Thissing (Sachtel) at THI-2 the I
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feasibility of various alternatives.
f 5.
A draft conceptual design and backup information were telecopied to t
the site on April 14, 1979, for review and cocment.
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Coments were factored into a revised design and lists of options i
for construction and operation of the system.
g 7.
Two revisions were telecopied to the site on April 14 and April 15. The l
final design is attached.
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8.
I was actified by Telford tha DUPLICATE DOCUMENT i
and the utility for their inf Entire document previously entered into system under:
,h ANO No. of pages:
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