Document Details


Title:
OPERATION TEAPOT, NEVADA TEST SITE, FEBRUARY - MAY 1955, PROJECT 6.1.2, ACCURACY OF MILITARY RADIACS
Author(s):
Subject Terms:
TEAPOT OPERATION; EXPOSURE RATEMETERS; SPECIFICATIONS; MEASURING INSTRUMENTS
Document Location:
Location - NNSA/NSO 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 - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1957 Nov 15
Declassification Status:
Unknown
Document Pages:
0056
Accession Number:
NV0001411
Document Number(s):
WT1138
Originating Research Org.:
ARMED FORCES SPECIAL WEAPONS PROJECT
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE ACCURACY OF SEVERAL TYPES OF RADIAC EQUIPMENT USED IN RESIDUAL RAD IATION FLUXES FROM NUCLEAR DEVICES WAS MEASURED. THE FIVE TYPES OF RA TEMETERS CHOSEN FOR PROJECT WORK (AN/PDR-18, 18A, 18B, T1-B, AND CDV-7 10) REPRESENT THE ENTIRE COMPLEMENT OF HIGH-RANGE RADIAC INSTRUMENTS C URRENTLY AVAILABLE TO MILITARY AND CIVILIAN-DEFENSE FORCES. INSTRUMEN T RESPONSE, RELATIVE TO A GAMMA-RAY STANDARD AND AN INITIAL COBALT 60 CALIBRATION, WAS DETERMINED IN SEVERAL DIFFERENT RADIOLOGICAL SITUATIO NS AND AS A FUNCTION OF TIME-AFTER-FISSION. ALL INSTRUMENT TYPES WERE FOUND TO READ LOW, RELATIVE TO THE STANDARDS, OWING TO DEFICIENCIES, IN THE PRESENT CALIBRATION PROCEDURES. CHANGES IN CALIBRATION METHODS FOR EACH EQUIPMENT TYPE ARE RECOMMENDED, AND SUGGESTIONS ARE MADE FOR GENERAL SPECIFICATION PROVISIONS FOR THIS KIND OF EQUIPMENT. THE DIR ECTIONAL PROPERTIES OF THE RESIDUAL RADIATION FLUXES WERE INVESTIGATED , AND A NUMBER OF DIFFERENT SOURCE CONFIGURATIONS WERE DETERMINED. WI DE VARIATIONS WERE FOUND IN THE INDICATIONS OF INSTRUMENTS OF THE SAME TYPE IN IDENTICAL FIELD SITUATIONS. THE PROJECT DATA INDICATE THAT E RRORS AS HIGH AS 50 PERCENT MAY OCCUR WITH CAREFULLY HANDLED AND CALIB RATED INSTRUMENTS. ON THE BASIS OF THIS WORK, IT IS CONCLUDED THAT RA DIAC INSTRUMENTS SHOULD NOT BE USED TO MAKE CLOSE ESTIMATES OF PERCENT AGE RADIATION CASUALTIES. RADIAC ERRORS SHOULD BE GIVEN CONSIDERATION IN THE ESTABLISHMENT OF COMBAT DOCTRINES AND RADIATION TOLERANCES. L ABORATORY STUDIES CARRIED OUT IN SUPPORT OF FIELD WORK HAVE RESULTED I N PROMISING DESIGNS OF GAMMA-RAY STANDARDS FOR FIELD USE. CLOSE CORRE LATION HAS BEEN FOUND BETWEEN THE ENERGY RESPONSE OF THE NEW STANDARDS AND THE LD-50 ENERGY RELATIONSHIP WITH LABORATORY STUDIES.


<< Return to Search Results