reliabiliv,

-.. som* cases, an* were not calibrated for the develonnment

procedure and equirmcnt used by Task Groun 7,1.

vig TUTY rig water moni toring devices were used in IVY,

Ia

TaE uci

greater water contaminetion was encountered than in IVY ane the situaticn
was. thoroughly monitored by the usc of normal radiac instruments,

It

was not found necessary to use soecial water monitoring devices. . There
are indications that the enecial wator monitoring radiac instrumentation
devised for IVY would have been unreliable after initial oxpesurs to
radiological contamination.
During CASTI7, a large number of battcrics were found to be "dead"
whon brought out of storage, though placed in coli storage.
siblo thsy wora "dead" bofore being nlaccd in storegc.

It is pos~

In addition, a

targo number of vattcrics lasted a shorter time than is normally cxpected,

.

Taventcrics of svar? batterias by supmir dorertn-nt nersonnel proved
to bo inaccuratc because thoso personnel wero not familiar with tho eine

flarities of diffsrent type battcrins,
Threo radiation sources, of magnitude about 7500, 250 ané@ 24 millicurics, wort assigns’ to the Naval Task Group for CASTLE,

Cnly the 24 nc

source was used since it met tho spacifications of instruction books for
calibration of all earr-~ iastradnts uscd by ™ 7.3.

Tha larger sourecs

are not well acactcd to shimbdoard usc, and thoir hanéling,

trensvortation

2 etoragc prosont:d unnceessary hazards.

Rartac {netruxcats brought to th: raciae instrument renair center
for renair usually had no failure rznert card or cquirment history card
‘ attach-d,

Such inforzation would have cnable+ ropeir sersonzel to locate

defcets of tho instruments moro quickly.

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