SWRHLQ7r
FINAL, REPORT OF OFF-SITE SURVEILLANCE
FOR THE
KIWI B4D EXPERIMENT
by the
Off-Site Radiological Safety Program
July 23, 1964
SOUTHWESTERN RADIOLOGICAL HEALTH LABORATORY
Public Health Service
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SWRHL-7r
FINAL REPORT OF OFF-SITE SURVEILLANCE
FOR THE
KIWI B4D EXPERIMENT
by the
Off-Site Radiological Safety Program
Southwestern Radiological Health Laboratory
Las Vegas, Nevada
for
Operational Safety Division
Nevada Operations Office
Atomic Energy Commission
J. S. Coogan, Chief, AEC/Special Projects
SWRHL, Las Vegas, Nevada
Copy No. 7
July 23, 1964
Department of Health, Education, and Welfare
Public Health Service
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ABSTRACT
The Public Health Service provided off-site surveillance in support of
the KIWI B4D reactor tests conducted on May 8 and May 13, 1964. This
support consisted of tracking the effluent, monitoring radiation dosage
to the off-site population, and collecting environmental samples (air,
milk, and water). The data collected indicate that no hazard to the off-
site population was created as a result of the KIWI tests.
-------
KIWI B4D TEST
OFF-SITE RADIOLOGICAL SAFETY PROGRAM
SOUTHWESTERN RADIOLOGICAL HEALTH LABORATORY
STAFF
Oliver R. Placak
Officer in Charge
Morgan S. Seal
Deputy Officer in Charge
John R. McBride
Assistant Officer in Charge
John S. Coogan, Chief Daniel L. Wait, Chief
AEC-PHS Special Projects Off-Site Surveillance
Writer
Donald T. Oakley
Reactor Project Officer
Editor
Geneva S. Douglas, Chief
Technical Reports Unit
11
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TABLE OF CONTENTS
ABSTRACT i
STAFF ii
TABLE OF CONTENTS iii
LIST OF TABLES iv
LIST OF FIGURES iv
I. INTRODUCTION 1
II. OPERATIONAL PROCEDURES 3
A. EXTERNAL MEASUREMENTS 3
B. ENVIRONMENTAL MEASUREMENTS 4
III. RESULTS 10
A. GROUND MONITOR DATA 10
B. DOSE RATE RECORDER DATA 11
C. FILM BADGE DATA 11
D. AIR SAMPLE DATA 11
E. MILK SAMPLE DATA 11
F. WATER SAMPLE DATA 12
IV. CONCLUSIONS 17
DISTRIBUTION LIST
111
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LIST OF TABLES
page
Table 1. U.S. Weather Bureau observations at the NRDS on
May 13, 1964. 9
Table 2. Peak dose rates off the test range complex on
May 13, 1964. 10
Table 3. Dose rate recorder data on May 13, 1964. 11
Table 4. Air Sampling data. 13
Table 5. Milk sample analysis. 14
LIST OF FIGURES
Figure 1. Location of dose rate measurements made following
the KIWI B4D test - May 13, 1964.
Figure 2. Environmental sampling locations for surveillance
of the KIWI B4D test - May 13, 1964.
IV
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I. INTRODUCTION
On May 8, and May 13, 1964 the KIWI B4D reactor was tested at Test
Cell C, located at the Nuclear Rocket Development Station, Jackass
Flats, Nevada. The May 8 experiment -was an intermediate power run
(design power x 0.001) and was a scaled down profile of the full power
test conducted on May 13. The tests were part of a series presently
being conducted by the Los Alamos Scientific Laboratory to achieve a
•workable design for space vehicle use. During the full power test, the
reactor was brought to design power at 1045 hours and remained at that
level for sixty-four seconds. The reactor was tested in an upright po-
sition so that the hydrogen coolant exhausted upward along -with escaping
fission products.
Under a Memorandum of Understanding between the U.S. Atomic Energy
Commission (AEC) and the U.S. Public Health Service (PHS ), the Off-
Site Radiological Safety Organization was established in 1954 to conduct
radiological surveillance of the area within a 300-mile radius surround-
ing the Commission's Nevada Test Site. A Commissioned Officer of
the Public Health Service was designated by the AEC as Off-Site Radio-
logical Safety Officer, and -was responsible to the Test Manager for di-
recting the surveillance activities.
Since that time, the PHS has established in L a s Vegas, Nevada its
Southwestern Radiological Health Laboratory (SWRHL). The off-site
surveillance of activities at the Nevada Test Site and of other nuclear
events conducted by the Nevada Test Site Organization has become one
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of the Laboratory's regular operational programs. The Officer in
Charge of the Laboratory serves as Off-Site Radiological Safety Officer
to the Operational Safety Division, Nevada Operations Office.
The off-site area in which the Off-Site Radiological Safety Program of
SWRHL conducts its program of radiological monitoring and environ-
mental sampling was re-defined after the end of the test moratorium in
1961 to consist of the area surrounding the Nevada Testing and Bombing
and Gunnery Range Complex. This Complex includes the Nevada Test
Site(NTS), theNuclear Rocket Development Station (NRDS), the Tonopah
Test Range, and the Nellis Bombing and Gunnery Range, and for sim-
plicity, -will be called the test range complex throughout this report,
A memorandum from B.P. Helgeson, Chief, Space Nuclear Propulsion
Office-Nevada, to N. H. Woodruff, Director Division of Operational
Safety, AEC, April 24, 1963 deals with "NRDS Safety Responsibilities".
This points out that off-NRDS areas remain the responsibility of the
Manager. NVOO, AEC, and through the Operational Safety Division,
NVOO, remain the responsibility of the Public Health Service.
Although Public Health Service monitors must begin tracking and mon-
itoring an effluent cloud close to its point of origin, the measurements
made within the test range complex are used only as a guide to trajec-
tory determination, or for purposes of checking instrumentation and
methodology. Since they do not serve as parameters in determining
dose to people or contamination of property in the off-site area, they
are not a subject of this report.
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II. OPERATIONAL PROCEDURES
A. EXTERNAL MEASUREMENTS
By Ground Monitors
Fourteen ground monitors tracked the reactor effluent passage with
portable instruments. Each monitor was equipped with the following
monitoring instruments: an Eberline E-500B, a Precision Model 111
Standard "Scintillator", a BeckmanMX-5, anda Tracerlab AN/PDR TIB.
The Eberline E-500B has a range of 0-200 milliroentgens per hour
(mr/hr) gamma and beta-gamma detection in four scales with an exter-
nal halogen filled G M tube and a 0-2000 mr/hr range from an internal
Anton 302 tube. The Precision Model 111 "Scintillator" is used prima-
rily for low level detection and provides for a range of 0-5 mr/hr in six
scales. The Beckman MX-5 instrument has a range of 0-20 mr/hr in
three scales. It is equipped with an external geiger tube with a slide-
open beta shield. The Tracerlab AN/PDR TIB has a range of
0-50,000 mr/hr infive scales. This instrument employs an air ioniza-
tion chamber detector. These instruments are accurate to ±20%,, and
readings can be taken to only two significant figures.
By Remote Dose Rate Recorders
Eberline RM-11 dose rate recorders are placed at sixteen stations a-
round the Nevada Test Site. These recorders utilize a geiger tube de-
tector to document radiation levels at specific locations. The instru-
ment operates on 110V AC and has a 0.01-100 mr/hr range. Gamma
-------
dose rate is recorded on a 30-hour strip chart. The instrument is ac-
curate to +.20%. The locations of dose rate recorders and areas moni-
tored are presented in Figure 1.
By Cloud Tracking Airplane
An Air Force U3-A aircraft, manned by two Public Health Service mon-
itors equipped with portable instruments identical to those of the ground
monitors, tracked the reactor effluent and served to position ground
monitors.
By Film Badges
The PHS maintains 65 film badge stations off the test range complex and
assigns badges to 166 off-site residents. The badge used is made up of
Dupont Type 555 film. Dose, as determined from this film, is accurate
to 150% in the 20-100 mr range and ±.10% in the 100-2000 mr range.
B. ENVIRONMENTAL MEASUREMENTS
Air Samples
On the test day the PHS maintained General Metal Works high volume
air samplers containing glass fiber prefilters and MSA* charcoal fil
ters at off-site locations as shown in Figure 2. These include 33 rou-
tinely operated stations and several additional stations that were estab-
lished in the path of the effluent on the test day. Analyses of the glass
fiber prefilters and the charcoal filters gave the results indicated in
Table 4. All air sample prefilters collected following the KIWI reactor
runs were returned to Las Vegas to be counted for gross beta activity
with a thin window, large area gas flow proportional probe connected to
*Mine Safety Appliance Company
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I
IJ1
I
UTAH V.T\\Provo
NEVADA
UTAH
• I I I %,OUEEN CITY SUMMIT
CEDAR CITY
14} \
ENTERPRISE C/r|CANijfe!v,LLE
NEVADA TESTING
AND BoWmNG AND GUNNERY j \PAHRANAGAT
scoTTY'sjcr.TSti \ ' 1 1
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a high speed sealer. The system is designed to count the 8"x 10" glass
fiber filter and has an efficiency of approximately 30% for 1.5 mev
betas. The system background is 575 i_20 counts per minute.
All samples were counted for gross beta activity as soon as possible
after collection, and activity levels were computed at the time of count
for the purpose of screening samples and delineating the effluent tra-
jectory. These samples -were then stored for five days to allow natural
activity to decay. They •were recounted at this time and again seven
days later. Activity levels were then recomputed to end of collection
from these two later counts. Several air samples showing levels of ac-
tivity significantly above natural background -were recounted frequently
to obtain a decay curve. The curve obtained was then analyzed for best
fit to the general equation y=a.x". Based on an analysis of four such de-
cay curves a T" ' relationship was found to exist with a mean error
of +5%. This relationship was then used to correct all filters with high
activity to end of collection.
All charcoal cartridges were gamma scanned by placing each cartridge
directly on a 4" x 4" sodium iodide crystal coupled to a 400-channel
pulse height analyzer set to view energies from 0 to 2 mev. Assuming
no break in the prefilter, the activity on the cartridge should represent
the gaseous fission products only ( I1 31 , I1 3 2 , I1 3 3 , I1 3 5 , plus some
Xe1 33 and Xe1 35 ). Detection efficiency for this geometry is about 18%
at 0.53 mev (I133). The minimum detectable activity for each iodine
isotope is taken to be about 200 picocuries total on the cartridge. Er-
ror estimates are such that values less than 1 picocurie per cubic meter
of air collected (pc/M3) are generally not reported. Since it is not pos-
sible to define duration of effluent passage at all locations, the reported
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NEVA
UTAH
MoKENZIE RN
v , _. LUND
• MANZONIE/OA
'CURRANT
CIA
DIABLOda A
R. -
I L--i
CEDAR CITY
3D
GOSS
NEVADA TESTING
..X
0 10 20 30 40 60
I I I I
SCALE IN MILES
ARIZONA
Figure 2. Environmental sampling locations for surveillance of the KIWI B4D test - May 13, 1964.
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values given as pc/M3 assume an average concentration over each en-
tire sampling period.
Milk and Water Samples
After each release of activity from NRDS, milk samples are collected
from dairies ( processing plants), producing dairy farms, and farms
producing milk for home consumption only (see Figure 2). Each sam-
ple is counted for 50 minutes. Due to the normally large sample load,
no attempt is made to recount samples giving low positive values. For
this reason the lower limit of detection for milk samples is taken to be
20 picocuries per liter (pc/1) at the time of count, and all results below
that value are reported as<20pc/l. The results are reported in Table 5.
The error associated with reported values is ±.20 pc/1 or 10%, whichever
is greater- All reported values are corrected to collection time.
All liquid samples are counted in 3. 5 liter inverted well aluminum beak-
ers which are placed on top of a 4"x 4" crystal coupled to a 400-channel
pulse height analyzer. The detection efficiency for theO. 364 mev photo-
peak of I131 is 5. 3%. A matrix technique is employed in computation
to compensate for the interference due to the presence of other isotopes.
The input to this matrix is variable, allowing for the simultaneous de-
termination of any eight nuclides for which detection efficiencies and
interference factors have been obtained. Actual computation is per-
formed by an IBM 1620 computer.
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Table 1. U.S. Weather Bureau observations at the NRDS onMay!3, 1964.
SKY CONDITION: 107. scattered cloud cover VISIBILITY: unrestricted
UPPER AIR DATA AT JACKASS FLATS, NEVADA 1000 PDT, 5-13-64:
HGT
(Ft.msl)
SFC 3610
3820
3970
4000
4892
5000
6000
6726
7000
8000
9000
10000
10220
11000
12000
12172
13000
14000
15000
16000
17000
18000
18960
19000
20000
WIND
(deg./kts)
195/14
195/17
195/20
195/23
190/20
185/17
187/21
186/22
184/23
180/25
191/26
204/24
205/21
205/18
207/12
204/12
201/12
194/13
195/15
196/17
199/17
213/18
221/20
229/22
245/27
PRESSURE
(mb)
889
882
876
875
850
846
816
795
787
759
733
706
700
680
654
650
632
607
584
562
541
520
500
TEMP.
(°C)
25.3
23.8
22.9
22.5
19.8
19.3
15.8
13.5
12.9
10.7
8.7
6.4
6.0
5. 3
4.3
4. 1
2. 1
- 0.7
- 3.5
- 6.4
- 8.9
-11.8
-14.5
DEWPOINT RE
(°C)
- 1.4
- 2.7
- 3.5
- 3. 1
- 5. 1
- 4. 2
- 5.9
- 6.7
- 7.8
-10. 2
-13.1
-15.6
-16.6
MB
MB
MB
MB
MB
MB
MB
MB
MB
MB
;LATIVE f
a)
17
17
17
18
19
20
22
24
23
22
20
19
18
(13)
(13)
(13)
(14)
(14)
(14)
(15)
(15)
(16)
(16)
() Numbers in parentheses are the result of calculations based on as-
sumed atmospheric conditions.
MB Motor Boating-dewpoint was below the limitations of the instrumen
tation.
Dashes indicate that data were not taken.
9
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III. RESULTS
The intermediate power run (design power x 0.001) yielded no detect-
able activity off site. The full power run yielded activity in the off-site
area. A summary of data collected off the test range complex is pre-
sented below. Weather conditions on the day of the test are presented
in Table 1. Only slight changes in the conditions presented in this table
were noted during the day.
A. GROUND MONITOR DATA
Peak gamma dose rates occurring off the test range complex are given
in Table 2. The only populated location at -which dose rates above back-
ground were detected was Diablo, where the peak net dose rate was
0.43mr/hr. The locations in Table 2 were remonitored on May 14;
however, no activity above background -was detected.
Table 2. Peak dose rates off the test range complex on May 13, 1964.
LOCATION
Azimuth & Distance
from CP-1
Diablo
359°, 75 mi.
Queen City Summit
5°, 52 mi.
( Unpopulated)
On Nyala Road 8 miles
S. W. of Nyala
7°, 89 mi.
(Unpopulated)
Time of Peak
Dose Rate
(PDT)
1410
1400
1505
Time Interval
Monitored
(PDT)
1358 - 1615
1350 - 1510
1450 - 1545
Net Peak
Dose Rate
(mr/hr)
0.43
0.07
0. 13
10
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B. DOSE RATE RECORDER DATA
The recorders at Diablo and Lund indicated radioactivity that could be
associated with the effluent passage. The data are presented in Table 3.
Table 3. Dose rate recorder data on May 13, 1964.
LOCATION
Azimuth &
Distance
from CP-1
Diablo
359°, 75 mi.
Lund
230, 142 mi.
Time of
Peak
Dose
Rate
(PDT)
1410
1711
Net
Peak
Dose
Rate
(mr/hr)
0. 36
0.028
Time Interval
In Which Dose
Rate Above Bkg.
Was Observed
(PDT)
1352 - 1504
1702 - 1744
Estimated Ex-
ternal Dose
During Cloud
Passage
(mr)
<0. 25
<0.02
C. FILM BADGE DATA
Stationary and personnel film badges that were exposed off the test range
complex during May indicated no exposure that could be associated -with
the KIWI test. All films collected north of the test range complex indi-
cated no result above the threshold exposure (20 mr).
D. AIR SAMPLE DATA
Three of the samples taken off site contained fresh fission products.
Analyses of the prefilters and charcoal filters are presented in Table 4.
E. MILK SAMPLE DATA
Milk samples collected from several ranches indicated the presence of
radioiodine. As seen from Table 5 the iodine was found in an area north
by northeast from the Nevada Test Site, and was detected as far as 220
miles from CP-1 (the NTS Control Point). No iodine was detected in
the several samples obtained from Utah.
11
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The TORY II-C intermediate power run took place on May 12, 1964,
and the full power test was conducted on May 20, 1964. Air samples
taken off-site following these events indicated no I131 , and it is believed
that all iodine found in milk as reported in Table 5 is due to the KIWI
B4D test. This is further substantiated by the relatively small release
of fission products during the TORY tests that resulted in negligible
dose rates (<0. 05 mr/hr) off the test range complex.
F. WATER SAMPLE DATA
No evidence of fresh fission products was seen in twelve water samples
taken from areas lying in the effluent's trajectory.
12
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Table 4. Air sampling data.
1. STATION LOCATION
STATION
NAME
Currant
Diablo
Queen City
Summit *
AZIMUTH
(°)
13
359
5
DISTANCE
(miles)
125
75
52
II. COLLECTION DATA
Ul
*i~
<^
960
462
92.5
SAMPLING PERIOD
BEGIN
Month
5
5
5
Day
13
13
13
Time
07:00
07:15
11:20
END
Month
5
5
5
Day
14
13
13
Time
07:00
16:37
15:22
COLLECTOR |
P
C
P
C
P
C
III. RADIOASSAY DATA
GROSS (•>,
COUNT
CORR.
TO:
ES
ES
ES
AC-
TIVITY
(pe/M3)
20
1500
400
GAMMA PULSE HEIGHT ANALYSIS
CORR.
TO:
ES
ES
ES
ACTIVITY (pc/M3)
Jl 31 jl 33 jl 35
<1 3. 5 ND
ND 12 ND
<1 5.8 ND
UJ
I
^Unpopulated
P - glass fiber prefilter
C - charcoal filter
ES - end of sampling period
ND - not detected
not analyzed
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Table 5. Milk sample analysis.
COLLECTION DATA
LOCATION
(Azimuth & Distance from CP-1)
Alamo, Nevada
59°, 57 mi.
Hiko, Nevada
45 , 64 mi.
Minnie Sharpe Ranch
Nyala, Nevada
11°, 93 mi.
Casey's Ranch, Nevada
14°, 93 mi.
Blue Eagle Ranch, Nevada
13°, 110 mi.
Manzonie Ranch, Nevada
15°, 131 mi.
DATE
COLLECTED
5/14/64
5/16/64
5/20/64
5/23/64
5/14/64
5/16/64
5/20/64
5/23/64
5/16/64
5/17/64
5/18/64
5/18/64
5/21/64
5/21/64
6/02/64
5/17/64
5/18/64
5/20/64
5/22/64
5/27/64
6/04/64
5/14/64
5/14/64
5/16/64
5/17/64
5/18/64
5/20/64
5/21/64
6/02/64
5/14/64
5/17/64
5/18/64
5/19/64
5/21/64
5/22/64
RADIOASSAY DATA
J131
<20
<20
30
<20
<20
<20
<20
<20
50
60
<20
50
<20
30
<20
140
100
70
<20
<20
<20
100
110
120
120
<20
40
40
<20
<20
<20
<20
<20
<20
<20
ACTIVITY (pc/1)
1133
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
70
<20
<20
<20
<20
<20
<20
50
70
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
Cs137
120
130
110
140
130
120
120
110
180
220
160
220
210
180
140
350
330
300
190
160
120
640
490
380
370
260
260
340
160
500
360
500
440
500
360
-14-
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Table 5. Milk sample analysis. (Cont. )
COLLECTION DATA
LOCATION
(Azimuth & Distance from CP-1)
Bradshaw Ranch, Nevada
9°, 132 mi.
Halstead Ranch, Nevada
8°, 135 mi.
McKenzie Ranch, Nevada
23°, 142 mi.
Gender's Ranch, Utah
40°, 173 mi.
Dickinson Ranch, Nevada
22°, 173 mi.
Yelland Ranch, Nevada
27°, 185 mi.
Pescio Ranch, Nevada
23°, 188 mi.
Eldridge Ranch, Nevada
25 , 196 mi.
Cold Creek Ranch, Nevada
5 , 204 mi.
DATE
COLLECTED
5/17/64
5/18/64
5/19/64
5/21/64
5/22/64
5/17/64
5/18/64
5/19/64
5/21/64
5/22/64
6/04/64
5/17/64
5/17/64
5/18/64
5/21/64
5/22/64
5/19/64
5/19/64
5/22/64
5/19/64
5/18/64
5/19/64
5/19/64
RAD
ACT
I131
<20
<20
<20
<20
<20
90
110
100
<20
30
<20
<20
<20
<20
<20
<20
<20
30
<20
<20
<20
<20
<20
IOASSAY DATA
IVITY (pc/1)
I133
<20
<20
<20
<20
<20
60
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
Cs137
110
80
120
100
95
140
160
140
110
140
85
250
300
320
240
290
130
170
280
300
150
440
200
-15-
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Table 5. Milk sample analysis . (Cont. )
COLLECTION DATA
LOCATION
(Azimuth & Distance from CP-1)
Henroid Ranch, Nevada
20°, 218 mi.
Tex Gates Ranch, Nevada
18°, 220 mi.
Kitt Lear Ranch, Nevada
16°, 242 mi.
Menlove Ranch, Utah
49°, 312 mi.
Bigler Ranch, Utah
43°, 330 mi.
Hardy Ranch, Utah
45°, 330 mi.
Brouhuis Ranch, Utah
38°, 360 mi.
DATE
COLLECTED
5/15/64
5/17/64
5/19/64
5/20/64
5/21/64
5/17/64
5/18/64
5/19/64
5/21/64
5/22/64
5/16/64
5/18/64
5/19/64
5/22/64
5/18/64
5/18/64
5/18/64
5/18/64
RAD
ACT
I131
40
40
<20
<20
<20
40
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
IDAS SAY
IVITY
I133
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
<20
DATA
(pc/1)
Cs137
160
170
160
180
110
220
180
170
140
180
240
200
280
300
180
140
240
120
-16-
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IV. CONCLUSIONS
The KIWI B4D full power test yielded detectable, though not significantly
large levels of radioactivity to the off-site area. The effluent covered
an area roughly consisting of the Railroad Valley north of the test range
complex between Queen City Summit and Duckwater- Resulting contam-
ination was detected as far as 220 miles fromCP-1 in theform of iodine
in milk.
The peak I1 31 concentration of 140 pc/1 following the test occurred at
Casey's Ranch. Sampling of milk did not begin at Casey's Ranch until
May 17, however, because Caseys had only one cow and it was being
used to suckle mavericks until that date. Samples were taken at Nyala
and Blue Eagle, in the vicinity of Casey's Ranch, on earlier days. The
peak concentration at Casey's Ranch can be compared to the Federal
Radiation Council Guides*. A daily intake of 100 pc, averaged over a
year- is considered an acceptable intake level. Such an intake •will yield
a 0. 5 rad/year dose to an infant's thyroid. A daily intake above that
considered acceptable over a one year period could not have existed at
Casey's Ranch for more than five days.
The iodine detected in samples collected off-site between May 13 and
June 4 is believed to have originated from the KIWI B4D test and not
from tests of the TORY II-C reactor made during the same period.
^Background material for the development of radiation protection stand
ards, Report No. 2, Federal Radiation Council, September 1961.
17
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DISTRIBUTION LIST
Copy
1-15 SWRHL, Las Vegas, Nevada
16 Ferber, G. D. , USWB, MRPB (R-3. 3), Washington, D. C.
17 &18 Allen, Phillip W. , USWB, NVOO, Las Vegas, Nevada
19 Halligan, Col. E.G., DASA, Las Vegas, Nevada
20 Maupin, Dr. Clinton, REECo. , Mercury, Nevada
21 Milligan, Victor M. , REECo. , Mercury, Nevada
22 Vespe, Vincent, ALOO, Albuquerque, New Mexico
23 - 25 Anton, George T. , SNPO-N, Jackass Flats, Nevada
26 Helgeson, B. P. , SNPO-N, NRDS, Jackass Flats, Nevada
27 Gallimore, John C. , WANL, NRDS, Jackass Flats, Nevada
28 Goldman, Dr. Morton I. , NUS, Washington, D. C.
29 Griffith, Percy, SNPO-N, Jackass Flats, Nevada
30 Hemmerle, Elmer, Westinghouse Electric Corp. , Pittsburgh, Pa.
31 Smith, David, Lewis Research Center, SNPO-C, Cleveland, Ohio
32 Wright, John M. , SNPO-N, Jackass Flats, Nevada
33 Simens, Hugo G. , NERVA Test Opns. , Aerojet-General,Jackass Flats
34 Kahn, Bernd, DRH, RATSEC, Cincinnati, Ohio
35 Anderson, Ernest C. , TOB, DRH, PHS, Washington, D. C.
36 Moore, Dr. Raymond, DRH, PHS, Region VII, Dallas, Texas
37 NERHL, Winchester, Massachusetts
38 Snow, Donald L. , DRH, PHS, Washington, D. C.
39 Terrill, James G. , Jr. , DRH, PHS, Washington, D. C.
40 - 42 Bacigalupi, Clifford M. , LRL, Mercury, Nevada
43 Fleming, Edward H. , LRL, Livermore, California
44 Goeckermann, Robert H. , LRL, Livermore, California
45 Goffman, LRL, Livermore, California
46 Sewell, Duane E. , LRL, Livermore, California
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Copy
47 Kelly, John S. , DFNE, AEC, Washington, D. C.
48 Philip, John, San Francisco Regional Office, PHS, San Francisco, Calif.
49 - 56 Graves, Dr. Alvin C. , LASL, Los Alamos, New Mexico
57 Reeves, James E. , Manager, NVOO, AEC, Las Vegas, Nevada
58 - 63 Roehlk, Otto H. , OSD, NVOO, AEC, Las Vegas, Nevada
64 Vermillion, Henry G. , NVOO, AEC, Las Vegas, Nevada
65 Baker, Robert E. , AEC, Washington, D. C.
66 Decker, Col. Ralph S. , SNPO, Washington, D. C.
67&6S Dunning, Dr. Gordon M. , DOS, AEC, Washington, D. C.
69 Haugen, Duane, Cambridge Research Center, Cambridge, Mass.
70 SERHL> Montgomery, Ala,bama
71 &72 Crowson, Brig. Gen. D. L. , DMA, AEC, Washington, D. C.
73 Zanger, Carl, AEC, Hanford, Washington
74 Mail & Records, NVOO, AEC, Las Vegas, Nevada
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