SHIPBOARD RADIOLOGICAL - COUNTERMEASURE METHODS
NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA
Pagination or Media Count:
Various test surfaces and specimens were exposed on YAG-39 and YAG-40 to fallout from Shots Zuni, Flathead and Tewa. Contaminability-decontaminability C-D studies were conducted when the ships returned to Eniwetok Lagoon. Three days after Zuni the average reading in the nonwashdown area of the YAG-40 was approximately 350 mrhr and in the washdown area approximately 90 mrhr. When the decontamination studies were initiated, the average levels after Flathead were lower than those after Zuni by a factor of 10. The average nonwashdown reading was 35 mrhr and the washdown reading, 10 mrhr. The removal of the removable radiological protective coating RRPC after Zuni in the nonwashdown area removed all but 0.5 to 8.0 of the contaminant, while firehosing alone left a residual of 6 to 28.
- Marine Engineering