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GONEIDENTAL
PART fll, CHAPTER 11
CHAPTER 11
RADIOLOGICAL SAFETY
GENERAL
11.1.
On
15 March 1958,
the beginning of
Operation HARDTACK, CJTF-Seven assumed responsibilitv for the radiological safety
of all JTF-Seven personnel. Each Task Group
Commander was delegated the responsibility for
11.6
The total cumulative exposure to JTFSeven personnel authorized by CJTFSeven directive was:
a.
radiological safety for the personnel within his
particular Task Group.
11.2
On 1 April 1958, CTG 7.5 relinquished
to CTG 7.1 the operational control of
b.
test period by HEN. This control was returned
to CTG 7.5 on 3 September 1958, 15 days after
the last detonation.
11.8.
The Rad-Safe personnel of AEC and its
Contractor functioned as an independent
Rad-Safe organization for TG 7.5. TU-6, the
Rad-Safe organization for TG 7.1, acted as the
Rad-Safe organization during the operational
period: however, to keep radiation exposure to
a minimum, TG 7.5 maintained control over
The gammacriteria for TG 7.5 personnel
was further restricted to 5.0 r for the calendar
11.7
A contaminated area, defined as aradiological exclusion area (RADEX), was as
follows:
FULL RADEX--an area in which the
gamma radiation contamination was
greater than 100 mr hr gamma, or greater
than 10,000 counts fer minute (cpm)
CTG 7.5 and CTG 7.1 on all Rad-Safe matters
of mutual interest. Facilities were shared. and
work on common problems, such as dosimetry,
decontamination, and equipment repair, was accomplished by agreement between the two TG
Commanders.
alpha using a portable survey meter with
a probe area of 55 square centimeters.
LIMITED RADEX--A radiation contaminated area with an intensity between
10 and 100 mr‘hr gamma, or between
1000 and 10,000 cpm alpha, with a probe
11.4.
and recommending protection measvres. The
Contractor's Rad-Safe Officer functioned as the
.
year.
personnel. Close liaison was maintained between
with responsibility to the TG 7.5 Deputy Com-
Any exception to this guide was to
be on an individual basis and had to
be approved by CTG 7.5 and the
CJTF-Seven.
services and operations as they affected TG 7.5
The Commander of TG 7.5 held RadSafe resnonsibility for the personnel of
TG 7.5. The CTG 7.5’s Rad-Safe Adviser was
responsihle for staff direction on all TG 7.5 RadSafe policies. The AEC Rad-Safe Officer was
designated the Assistant Chief of Staff. E-7,
Gamma--a maximum of 3.75 roentgens (r) for any consecutive 13-week
period, with a maximum of 5.0 r with-
in the period of the Operation.
the Rad-Safe facilities operated during the non-
mander for supervising the Rad-Safe operations
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RADIATION EXPOSURE
OPERATIONAL GUIDES
area of 55 square centimeters.
11.8
Entryof all personnel into contaminated
areas was controlled by CTG 7.1, TU-6.
Personnel were not permitted beyond the RadSafe check point without a proper acces: pass
issued by the TU-6 Plotting and Briefing Officer
which stated the purpose and the rrecise location
of the entry. H&N operated Rad-Safe check
Operations Officer and provided necessary support. During periods when neither the Rad-Safe
points only when it was necessary for the control
of TG 7.5 personnel or when required to supplement TU-6 personnel.
as Assistant Chief of Staff, E-7. This organi-
11.9
demonstrated that H&N could adequately supply
radiological safety services for TG 7.5. In previous test series, Rad-Safe personnel were integrated into TU-6, TG 7.1, and the CTU-6
Work-party monitors were furnished by H&N.
All persons were required to wear anti-contami-
Adviser nor the Ascictant Chief of Staff, E-7,
was at EPG. the AEC Rad-Safe Assistant acted
zational arrangement was most satisfactory. and
became the Rad-Safe Officer for TG 7.5.
11.5
The operational chart of the TG 7.5 RadSafe organization is shown in Figure 3-8.
All parties entering FULL RADEX areas
were accompanied bycertified monitors.
nation clothing in FULL RADEX areas. TU-6,
TG 7.1, determined the kind of clothing to be
worn in a LIMITED RADEX area as the par-
ticular mission demanded. However, for TG 7.5
personnel, concurrence was obtained from the
Contractor’s Rad-Safe Officer.
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