ML19291C281
| ML19291C281 | |
| Person / Time | |
|---|---|
| Site: | West Valley Demonstration Project |
| Issue date: | 12/19/1979 |
| From: | Clark A, Haughney C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Rouse L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML19291C263 | List: |
| References | |
| NUDOCS 8001230270 | |
| Download: ML19291C281 (22) | |
Text
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Leland C. Rouse '-
3 IS73 Mrs. Holloway of Oak Ridge National Laboratory (ORNL) discussed the tornado effects on the plant in terms of modelling efforts and the use of camouter codes, TVENT and SCLA-ICE, developed at the Los Alamos Scientific Laboratory
( LASL). The viewgraphs presented for this discussion are shown in Attachment 3.
Dr. Davis discussed estimates of radioactivity at risk and quantities which could be released during a tornado. The viewgraphs used for this discussion are shown in Attachmsnt 4.
Dr. Coffman indicated that his analysis showed that the head-end ventilation system filters would be protected even during the extreme conditions of the 200 moh tornado (the largest credible).
Dr. Clark presented the results (Attachment 5) of a consequence analysis based on meteorological dispersion factors associated with the tornado. These factors were derived from work done at the Savannah River Laboratory. An assumotion in this analysis is that a person stands at the site boundary in the path taken by the tornado after it passes over the plant. As unlikely as this assumption may seem, it is necessary in order to estimate a possible radiological offsite exposure from the tornado event.
Recuest Based on the above discussion, NFS was requested to provide some protection by sealing up the manipulator sleeve ports and other similar openings. NFS indicated they would respond to this request within a shor^ period of time.
Succortino Documentation The reports documenting the above a'nalyses are not all completed. When all of the reports are complete, the NRC staff will issue them along with its evaluation. This process is exoected to take about three months.
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A. Thomas Clark, Jr.
Advanced Fuel and Scent Fuel Licensing Branca
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Charles J.
.aughney N
Advanced Fuel and Scent Fuel Licensing 3 ranch
Enclosures:
Attachments 1, 2, 3, 4 & 5 1792 304 8o01280 P. O
List of Attendees Name Organization A. T. Clark, Jr NRC, HMSS, FCAF T. K. CeSoer NYSERDA W. A. Coffman Engineering Analysis E. J. Frederick ORNL L. J. Holloway ORNL W. Cavis, Jr.
ORNL C. J. Haughney NRC, NMSS, FCAF N. J. Newman NFS J. R. Clark NFS R. F. Abbey, Jr.
NRC, RES 6
=
1792 305
/
l TOR!! ADO EFFECTS AT 'lEST VALLEY PURPOSE OF M.EETItiG REVIEW ANALYSIS INDICATE EFFECTS STRIKE RISK A!!ALYSIS PROBABILITY PHYSICAL EFFECTS FLcW PATHWAYS o
STRUCTURAL o
RADIOLOGICAL EFFECTS REQUEST FOR MODIFICATI0t!
SECURE MANIPULATOR ~ SLEEVES
- =m.
e M
9 h
6
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1792 306
ANALYTICAL PQGCE URES S IDENTI?Y VEITILATION PATdWAYS AND OTdER PATHWAYS WITH FOTETIAL FOR RELEASE OF AIR FROM THE CELLS G DEVELOP SCHEMATIC MODEL GF VEITILATI0fl AND OTHER PATdWAYS 4 USING TVENT COMPUTER CODE, Dti ?f4INE TRANSIST PRESSURES AND FLOWS GENERATE WITHIN MODELED SYSTEM BY TORNADO-INDUCE FORCES S USING RESULTS CF TVENT ANALYSIS, Dai:RMIME IF AIR CCNTAINING RADI0 ACTIVE MATERIAL COULD ESCAPE FROM BUILDING G USING TVENT GBERATE FLOWS, DtitRMIME VELOCIT( PROFILES WITdIN CELLS USING SOLA-ICE COMPUTER CODE
- DtitRMINE AMOUNT OF MATERIAL REENTRAINED AND RELEASE FROM BUILDING DURING TORNADO GENERATE INTERNAL FLOWS 4 dei' ERMINE ATMOSPHERIC DISPERSIGN CF SCURCE 4 CALCULWt AIR C0flCETRATI0tlS AND FOP DOSAGES 1792 307
CASES ANALYZED:
- CASE 1 - GPC TO PMC THROUGH MANIPULATOR FORTS TO CORRIDOR AND AMBIENT S CASE 2 - GPC TO CPC TO EQUIPMENT DECONTAMINATION ROOM (EDR) TO AMBIST O CASE 3 - GPC THROUGH COVEPED PORTS TO GSEPAL OPEPATING AISLE (GOA) TO AMBIET b
8 CASE 4 - GPC THROUGH EXHAUST DUCT TO MASTER SLAVE MANIPULATOR (MSM) BUILDING TO AMBIST 9 CASE 5 - NORMAL VENTILATION PAT'iWAYS (ABNORMAL PAT'iS SEALED) 'dITHOUT BLCWERS OPERATING G
1792 308
PROCESS MECHANICAL CELL (?MC)
MANI?ULATOR PORTS GPC GENERAL PURPOSE sin d CHUTE cgtt wr HATCH l
3 x 4 ft (5300 ft )
3 PROCESS MECHANICAL l PMC CELL (15900 ft )
3 NOA (7) ic in. G MECH ANICAL MANIPULATCR OPERAT NG AlSLE FCRTS O
STAIRWELL CUTSICE 1792 309
CHEilCAL ?ROCESS CELL (CPC) TO EQUI?ME.'IT DECONTAMINATION ROOM (EDR)
OUTSIDE DUCT COVERED WITH PLYWCCD O
EDR OUTsIDE AIRLOCK g
3 (200ft) g i
SHIELO V
OCCR I
_l EDR MANUAL EQUIPMENT r-O-~ DECONTAMINATION ROOM l PAF.TIALLY l OPGtl 4'
c-3 CPC l
(4100 ft )
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CHEMICAL PROCESS 0COR CELL (19.1,500 f t3)
HATCH GPC F
2 f t s in. x 5 f t 4 in.
GENERAL PURPOSE CELL 3
(53COft )
1792 310
GENERAL PURPOSE CELL (GPC) PORTS TO GENERAL OPERATING AISLE (GOA)
GPC GENERAL PURPOSE CELL 3
(5300ff)
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4 m. d CAROSCARD COVERED CUCT MINIATURE CELL 2
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oucT5 GENERAL PURPOSE (iCCO ft )
OPERATING AISLE A
DCOR la TAPED MINIATURE
,poog CELL AIRLOCK O
STAIRWELL OUTSIDE 1792 311
GPC EXilAllST DUCT TO MASTER SLAVE IMNIPULATOR (MSM) BUILDING liEV 2 0in. y FILTER GPC
^
llOUSING 16in P GENERAL PURPOSE CELL MSMR MASTER SLAVE MANIPULATOR REPAIR 3
(5300l!)
ROOM 3
(23520 f t )
DECONTAMINATION ROOM 3
(7524 fl )
A N
4 DECON. ROOM N
AIRLOCK (1000 f1 )
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O OUTSIDE
PATHWAYS WITH POTENTIAL FOR RELEASE OF RADI0 ACTIVELY CONTAMINATED AIR TORNADO PATHWAY EXTERIOR WALLS WIND SPEED (MPH) 1 PMC 100 MANIPULATOR INTACT 200 PORTS 300 1
PMC 100 MANI?ULATOR REMOVED 200 PORTS 300 4
GPC TO REMOVED 300 MSM 3UILDING 1792 313
i AIR V01.UMES RELEASED FROM CEl.1S VOLUME RELEASED V0LllME RELEASED TOTAL VOLUME CASE FROM PMC FROM GPC TO AMBIENT (BRANCil 3)
(BRANCil li)
(BRANCll 1)
FT3 FT3 FT3 1A OUTER 362 275 570 IB WALLS 1273 11112 2299
,' INTACT JC 3933 1922 3953 (BRANCilES 2 & 3) 1A 1 8111 139 568 OUTER.
IB
) WALLS 19117 2282 2292 1C l.0ST 3319 11555 5675 G
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i ESTHIATiHG UEICllT AND HUCLIDE ACTIVITIES IN FHC AND GPC 1.
OETAIN AVERACE POWER REACTOR TUEL DECAY ACE FROH SAR (1973) AND
'Y/ OUI /SUB-77/42500 (1977).
(HPR TUEL CAN BE HECI.ECTED.)
2.
OBTAIN AVERAGE FOWER REACTOR TUEL SURNUP.
3.
USE 1 AND 2 IN ORICEN CODE TO CALCUIATE QUANTITIES OF NUCLIDES AT DECAY ACE PLUS y-RAY SPECTRUH.
4 USE 3 FLUS SilIELDIliG DESICH CODE TO CALCULATE DOSE COHVERSION 2
FACTORS [(kg U/m )/(R/ttr)).
5.
USE 4 PLUS IN-CELL DOSE DATA OBTAINED BY HFS PERS0 TINEL TO 2
CALCULATE SURFACE CONCENTRATIONS OF FUEL (kg U/m ),
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SUIDIARY OF CALCULATED DISCllARCES FROH PHC g
l CASE WALLS AND DOORS IHTACT WALLS AND DOORS DESTROYED IB IC 13 1C WEICitT OF RJEL 7.5-225 100-3000 95-2850 390-11,650 DISCilARCED, 3 ACTIVITY DISCllARGED. C1 1
80Sr 0.24-7.1 3.2-95 3.0-90 12-370 80Y 0.24-7.1 3.2-95 3.0-90 12-370 I37Cs 0.30-9.0 4.0-120 3.8-110 16-470 l
l 3 3 7'"B e 0.29-8.6 3.8-110 3.6-110 15-440 l
TOTAL FP 1.1-34 15-450 14-430 59-1700 2%IPu 0.23-7.0 3.1-93 2.9-88 12-360 TOTAL ACT.
0.24-7.1 3.2-95 3.0-90 12-370 4
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SU19tARY OF CALCUl.ATED DISCilARCES FROH PHC CASE WALLS AND DOORS IHTACT WALLS AND DOORS DESTROYED In 1C IB IC UEICllT OF nlEL 7.5-225 100-3000 95-2850 390-11,650 DISCllARCED, 3 i
ACTIVITY DISCllARCED. Ci soSr 0.24-7.1 3.2-95 3.0-90 12-370 S0Y 0.24-7.1 1.2-95 3.0-90 12-370 137Cs 0.30-9.0 4.0-120 3.8-110 16-470 337"Ba 0.29-8.6 3.8-110 3.6-110 15-440 TOTAL FP 1.1-34 15-450 14-430 59-1700 Pu 0.23-7.0 3.1-93 2.9-88 12-360 24i I
I TOTAL ACT.
0.24-7.1 3.2-95 3.0-90 12-370 6 N u
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.061 - 1.9
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.09 - 2.3 1.2 - 35 Lunes
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.015 GI-TaAcT G00 MPH WINDS) 1792 322'
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