CHAPTER 1
TASK GROUP ORGANIZATION FOR RADIOLOGICAL SAFETY
1.1
GENERAL
A radiological-safety unit, Task Unit 7 (TU-7), was continued from Operation Ivy to accomplish the missions and responsibilities of radiological safety for Operation Castle. TU-7
operated radiological-safety centers at Parry Island, at Eniwetok Island, and aboard ships at
Bikini in the accomplishment of these missions.
The concept of operations for this test series caused a change of philosophy; consequently
the Rad-Safe Unit became a technical service for unit and project officers and assisted the
supervisory personnel by providing technical advice and training for project personnel desig-
nated as “monitors.” This practice permitted the unit to reduce its personnel requirements by
50 per cent.
TU-7 was designated the radiation-safety organization for Task Groups (TG) 7.1 and 7.5,
as well as the technical Rad-Safe Unit for Joint Task Force 7 (JTF-7),
1.2
TU-7 MISSION
By direction of paragraph 1c, Annex F to Commander, Task Group 7.1 (CTG-1.1), Operation Plan No. 1-53, the Commander was to provide for:
1. Radiological protection of TG-7,1 and TG-7.5 personnel.
2. Maintenance of operational efficiency for TG-7.1 and TG-7.5 in the presence of radio-
logical hazards.
3. Technical assistance to task force and task group commanders, program directors, and
project leaders on nonmedical matters pertaining to radiological safety.
1.3
TASK UNIT RESPONSIBILITIES
To effect accomplishment of the above mission, the Commander, Task Unit 7 (CTU-7),
performedthe following tasks:
1. Organized and commanded a radiological-safety unit.
2. Supervised all ground-monitoring services associated with scientific missions, which
included monitoring of water supplies at inhabited distant atolls and establishing suitable tables
of allowable residual radiation levels for equipment, personnel, vehicles, boats, etc.
3, Furnished laboratory services and technical assistance to all task groups, including:
a. Procurement, storage, and issuance of film badges and specified items of radi-
ological-safety personal equipment.
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