ML19320C775
| ML19320C775 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/30/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19320C767 | List: |
| References | |
| SECY-80-132E, NUDOCS 8007180016 | |
| Download: ML19320C775 (14) | |
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BASES FOR RECOMMEND 4 TION e
REACTOR SUILDING ATMOSPHERE NEEDS TO BE CLEANED UP SAFELY AND PROMPTLY PuaLIC HEALTH AND ENVIRONMENTAL IMPACTS OF AH1 ALTERNATIVE EXAMINED ARE NEGLIGISLE THE SLOW, CONTROLLED METHOD IS AVAILABLE NOW PSYCHOLOGICAL IMPACTS MAY INCREASE WITH FURTHER OELAYS IN INITIATING CLEANUP OF THE REACTOR SUILDING CONTROLLED PURGING IS THE GUICKEST AND SAFEST FOR THE WORKERS AT I.'l[
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ESTlMATED GAMMA DOSE RATES INSIDE REACTOR BUILDING (Er-85 Beta Dose To Bare Skin is 150 rad /hr) 3/4 From KrS5 4 yq From Walls
& Sump 1.3 rem /hr Total Body 3AT Level _
P 27.
From Kr85
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Airlock 2.3 R/ he < E From
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305' Level _
120 R/ hr 0.1 R/hr l ' Fro m Sur'ac c -
Inside 290' Level _
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COMMENTS RECEIVED 500 - OPPOSED ~ CONTROLLED PURGE 195 - GENERALLY SUPPORTED CONTROLLED PURGE 121 - NO POSITION OR RECOMMENDED ALTERNATIVE 800 TOTAL (APPROXIMATELY)
ALL SUBSTANTIVE COMMENTS TO 3E PUBLISHED AS VOLLUME 2 To NUREG-0662 AND MADE PUBLICALLY AVAILABLE O
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NRC STO.FF CONCLUSI0ti:
CONTROLLED PURGING IS THE PREFERRED ALTERNATIVE TO MINIMII:_
LONG-TERM PSYCHOLOGICAL STRESS.
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NRC STAFF CONCLOSION:
CONTROLLED PURGING WILL HAVE NO PHYSICAL HEALTH EFFECTS INDEFENDENTLY ASSESSED BY A NUMBER OF GROUPS, REACHING SIMILAR CONCLUSIONS NCRP
. EPA
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- UCS
- NRDC i
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SLOW PURGE OPTION b. INDIVIDUAL DOSE LOCAT!DR h3EOROLOGICAL_DISITRSION 0.2 naen TOTAL BODY 600 M WP,W 6.7 x 10-6 SEC/M5 11 MHEN SKIN (CLOSEST Sil0RE OF SilELLEY ISL.)
(ANNUAL AVERAGE) 50 MILE'PORULATION DOSE
- 0.76 PERSON-REM TOTAL BODY 63 PERSON-REM SKIN AVERAGE 50 MILE INDIVIDUAL DOSE
- 3.5 X 10 'l MREM TOTAL BODY (2.2 HILLION PEOPLE) 2,5 x 10-2 MREM SKIN l
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SUMMARY
OF A6E SPECIFlC CANCER MORTALITY RISK ESTIMATORS POTENTIAL CANCER MORTALITY AGE 6ROUP PER 106 PERSON-REM
- TOTALS IN-0TERO 50 1.EUKEMIAS 300
.50 ALL OTiiERS 0-0,99 YEARS S
(.EUKEMIAS 93 Ig ALL OTilERS l
1-10 YEARS 50 LEUKEMIAS 105 55 ALL OTiiERS 11-20 YEARS 95 L UKEMIAS 196 I71 LL OTilERC 20-70 YEARS 23 L UKEMIAS 131 108 Lt. OTilERS ALL AGES 78.I,EUKEMIAS 135
.06 n$lN d
LL OTilERS
- FOR A POPULATION COMPOSED ONLY OF THAT AGE GROUP, 0.76 PERSON-REM TOTAL BODY
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0.0001 FATAL CANCERS 63 PERSON-REM SKIN 0.00006 FATAL CANCERS
NEED FOR DECONTAMIF1ATION OF THE REACTOR BUILDING ATV0 SPHERE
' PERMIT LESS RESTRICTED AND PROLONGED ACCESS
' 6ATHER INFORMATION
' MAINTAIN EQUIPMENT (E.G., AIR COOLERS, NEUTRON MONITORS)
- DETAILED RADIATION MAPPING
' LOCAL SHIELDING PLACEMENT
' PRELIMINARY DECONTAMINATION WORK
- ASSIST WATER PROCESSING WITH AREA WASH DOWNS
' PROCEED TOWARD TOTAL DECONTAMINATION OF FACILITY, INCLUDING DEFUELING M
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u IlEC iCR DECONTAMINATION (CCN'T)
- IRECLUDE ~UTURE, UNCONTRCLLED LEA.< AGE (NC HEALTH EFFECT, 3UT CAUSES ANXIETY IN AREA)
- ?RCMPT DECONTAMINATICN CF ATMCSPHERE SHCULD MEL? REDUCE LONG-TERM PSYCHOLCGICAL STRESS 3Y MAXING A ?CSITIVE MOVE TOWARD CLEANUP OF IM-2. AND SHORTENING CVERALL TIME :CR CLEANUP i
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'IEED FCR DECONTAMINATION (CCN'T) i
- a cRESENCE OF 's'R-C LIMITS ENTRY TO CNLY _t -20 MINUTES; CNLY
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PRELIMINARY RADIATION SUR'/EYS PCSSI3LE
- REDUCES RISKS TO WCRXERS
- REDUCES TOTAL 3CDY GAMMA CCSES 3Y 75". AT uPPEa LEvsL, 30% AT LCWER LE/EL
- REDUCES RISK OF FALLING CR TEARING SUIT WHICH COULD RESULT IN EETA E'<?CSURE I
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PROTECTIVE CLOTHING AND EO.UIPMENT (APPROXIMATELY 35 POUNOS) f CRANIAL CLOTH HCCD TRANSCElVER PtASTIC HCOO p'
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ALTERNATIVES CONSIDERED e
DO NOTHING
- CONTROLLED PURGE 3 LOW - 150 FT. STACK FAST - 160 FT. STACK ELEVATED RELEASES 250 FT. STACK, HEATED EFFLUENT
- 400 FT. STACK
- 1000 FT. STACK
- 2000 FT. TETHERED BALLOON
- SELECTIVE ABSORPTION CRYOGENIC CHARCO.u, ADSORPTION GAS COMPRESSION COMBINATION PROCESS / PURGE
- EVALUATED FOR FIRST TIME IN FINAL EA e
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i AGENCIES AND ORGANIZATIONS MONITORING RELEASES G
Commonwealth of Pennsylvania Nuclear Regulatory Commission (NRC?
e Environmental Protection Agency (EPA?
e Department of Energy (DOE?
4 Metropolitan Edison Company I
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