Radiac Detector DT-196/PDR27R. (fig. 1-2) (2).

TM 11-6665-230-12

Krypton is chemically inert. If the test sample is damaged so that the capsule

leaks, remove the sample to a well-ventilated area. If the sample is examined

with a Radiac Set AN/PDR-27( ) or another equally sensitive set and is found to

be free of radioactivity, the gas has escaped and the sample is harmless. The

radioactive test sample consists of an aluminum tube holding a capsule con-

taining 5 millicuries of Krypton-85 gas. The tube is flattened at one end for

handling. The Krypton-85, is shielded by the holder and provides a gamma radia-

tion source that permits the operator to check the operating condition of the

radiac set.

d. Harness ST-136/PDR-27R. (fig. 1-2) (4). The shoulder harness, and adjustable strap made of non-

absorbent plastic, is used for carrying the radiacmeter during operation. Clip fasteners at each end of the

strap snap Into holes In small projections on the radiacmeter panel.

e. Case CY-4995/PDR-27R. (fig. 1-2) (5). The carrying case houses all the other units of the radiac

set. It is splash proof and is equipped with a welded-on carrying handle. The case is deep-drawn

aluminum and can readily be decontaminated. Compartments to carry a spare set of batteries as well as

all the other components are provided In the case. A warning label and nomenclature plates are shown

outside the case. (fig. 1-3).

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