Document Details


Title:
OPERATION TEAPOT NEVADA TEST SITE, FEBRUARY - MAY 1955, PROJECT 2.6, RADIATION ENERGY ABSORBED BY HUMAN PHANTOMS IN A FISSION FALLOUT FIELD
Author(s):
Subject Terms:
TEAPOT OPERATION
Document Location:
Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV
Document Type:
CORRESPONDENCE, LETTERS, MEMOS
Publication Date:
1955 Feb 28
Declassification Status:
Unknown
Document Pages:
0060
Accession Number:
NV0006258
Document Number(s):
WT1120
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2003 Sep 18
Description/Abstract:
ACTUAL METHODS USED TO EVALUATE TOTAL RADIATION DOSES RECEIVED BY PERS ONNEL OPERATING IN RESIDUAL FALLOUT FIELDS ARE QUESTIONABLE, DUE TO TH E LIMITATIONS OF PRESENT RADIAC MONITORING EQUIPMENT. THE MILITARY, I N ORDER TO PLAN BETTER OPERATIONS IN NUCLEAR WARFARE, MUST HAVE ACCURA TE KNOWLEDGE OF THE HAZARDS TO BE ENCOUNTERED. THE PLANNED OBJECTIVES ARE AIMED AT EVALUATING THE TOTAL ENERGY ABSORBED; POINTING OUT THE I NADEQUACIES OF PRESENT FIELD INSTRUMENTS AND THE EXISTENCE OF AN ADDIT IONAL HAZARD TO PERSONNEL. PHANTOMS, RESEMBLING HUMANS AND MADE OF TI SSUE EQUIVALENT MATERIALS, WERE PLACED IN PRONE AND UPRIGHT POSITIONS IN A FALLOUT FIELD. MEASUREMENTS OF DOSE RECEIVED WERE TAKEN OVER THE SURFACE AND AT SEVERAL INTERNAL LOCATIONS CORRESPONDING TO THE POSITI ONS OF VITAL ORGANS. THE PRESENCE OF A SOFT COMPONENT STRONGLY INDICA TIVE OF BETA RADIATION, WAS FOUND WHICH GAVE A SURFACE DOSE, IN MANY C ASES, 50 TIMES THE AVERAGE INTERNAL DOSE FOR A MAN LYING PRONE. THIS FACTOR CAN BE REDUCED APPROXIMATELY 50 PERCENT BY BRUSHING THE GROUND, BUT THIS APPARENTLY HAS LITTLE EFFECT ON THE INTERNAL DOSE. THE UPRI GHT MAN IN SUCH A FIELD RECEIVED DOSES DIFFERING BY A FACTOR OF EIGHT BETWEEN FEET AND HEAD. ALTHOUGH THE INTERNAL DOSES AGREED FAVORABLY W ITH STANDARD RADIAC EQUIPMENT, THE SURFACE DOSE WAS FOUND TO BE SIGNIF ICANTLY GREATER. IT IS CONCLUDED THAT A FALLOUT FIELD DELIVERS A LARG E DOSE OF ABSORBED ENERGY TO THE BODY, WHICH IS NOT USUALLY MEASURED. FURTHER STUDY IS REQUIRED TO DETERMINE THE BIOLOGICAL HAZARD OF THE U NMEASURED COMPONENTS.


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