Document Details


Title:
I-131 IN THE THYROID OF SHEEP AND IN FOOD, THYROID, AND MILK OF DAIRY COWS - FINAL DRAFT 2/28/63 ( COVER LTR TO KNAPP )
Subject Terms:
IODINE 131; CATTLE; ANIMALS; SHEEP; THYROID; FOOD; MILK; RADIATION MONITORING; RADIATION DOSES
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:
1963 Mar 08
Declassification Status:
Unknown
Document Pages:
0005
Accession Number:
NV0027356
Document Number(s):
HW76000
Originating Research Org.:
HANFORD ATOMIC PRODUCTS OPERATION
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
A SINGLE I-131 CONTAMINATION EVENT (INVOLVING FORAGE) WAS SIMULATED BY FEEDING SHEEP AND DAIRY CATTLE I-131-LABELED FEED TWICE DAILY, EACH F EED SAMPLE BEING SPIKED ON DAY ONE WITH 5 UC PER SAMPLE. PEAK MILK CON CENTRATION IN THE DAIRY CATTLE OCCURRED ON THE FOURTH DAY WITH ABOUT 0 .4 OF THE FIRST DAY"S DOSE OF 10 UC OBSERVED PER LITER OF MILK. THE PEAK THYROID CONCENTRATIONS IN THE SHEEP AND CATTLE OCCURRED AFTER ONE WEEK AND WERE 200 AND 60 OF THE FIRST DAY"S DOSE OF I-131, RESPECTIV ELY. IF ONE DRANK ONE LITER OF THE CONTAMINATED MILK EACH DAY AND ASSU ME A 72-HOUR DELAY, A 30 UPTAKE AND A 76 DAY EFFECTIVE HALF-LIFE, PEA K THYROID CONCENTRATIONS WOULD HAVE OCCURRED AFTER TWO WEEKS AT 0.4 O F THE FIRST DAY'S DOSE TO THE COW. THE INFINITY THYROID DOSE TO SUCH A PERSON WOULD BE ABOUT 700 MRADS. EED SAMPLE BEING SPIKED ON DAY ONE WITH 5 UC PER SAMPLE. PEAK MILK CON CENTRATION IN THE DAIRY CATTLE OCCURRED ON THE FOURTH DAY WITH ABOUT 0 .4 OF THE FIRST DAY"S DOSE OF 10 UC OBSERVED PER LITER OF MILK. THE P EAK THYROID CONCENTRATIONS IN THE SHEEP AND CATTLE OCCURRED AFTER ONE WEEK AND WERE 200 AND 60 OF THE FIRST DAY"S DOSE OF I-131, RESPECTIVE LY. IF ONE DRANK ONE LITER OF THE CONTAMINATED MILK EACH DAY AND ASSUM E A 72-HOUR DELAY, A 30 UPTAKE AND A 76 DAY EFFECTIVE HALF-LIFE, PEAK THYROID CONCENTRATIONS WOULD HAVE OCCURRED AFTER TWO WEEKS AT 0.4 OF THE FIRST DAY'S DOSE TO THE COW. THE INFINITY THYRIOD DOSE TO SUCH A PERSON WOLD BE ABOUT 700 MRADS.


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