The MPE's do not represent limits within which there
can be a complete disregard of exposure. (The exposure
to ionizing radiation should be kept to an absolute
minimum in all circumstances.)
Radsafe Instrumentation
ares
The majority of the TU 7,monitor ing was done with the AN/POR-T1B ion
chamber (IPO 132.1TU1#615, p. 29).
on loan from AFSWP.
Fifty-five of these instruments were
The instrument electronics had been modified atthe
Nevada Test Site to eliminate switching transients resulting from changes
in scale.
A new ion-chamber instrument developed by the Army Signal
Corps, IM-71/PD(XE-1), called the "Jasper," was tested and used after
humidity leaks were corrected.
available to the task force.
Twenty-five of these instruments were
A letter to CTG 132.4 indicated that "for
some instruments" the meter needle would not return to zero when subjected
to high temperature.
,
This would not affect the reading above 1 R/hr but
.
.
Persona ev mnAAT
could cause some inaccuracies in the lower ranges. [Was dene or.
a
Hats
with the MX-5 and AN/POR-T27
Geiger-Mueller instruments.
Table 2.3 lists the instruments used by TG
132.3.
In order to protect vessels from contamination by radioactive material
in lagoon waters, periodic samples were collected from the lagoon,
analyzed in the laboratory van aboard the Rendova, and, in the event
contamination was indicated, CTG 132.3 was notified.
2-43
s