This report was written to describe the instrument and test results obtained. It is understandably imperative that such alarming devices be incorporated in various areas of the plant to provide an alarm or warning for increasing dose rate from gauss radiation fields.

This report summarizes experimental results obtained for the General Electric Company under terms of Design, Development and Research Contrast DDR-33. A discussion of the results, the manner in which they were obtained and their probable accuracy are included. Suggested improvements or modifications of properties of this nature be contemplated.

Knowledge of the effects of interaction between vessels or units containing fissionable material is important for the safe handling, storage, and shipping of these containers. Expressions for the effect of neutron interaction on criticality have been derived for the cases of bare and tamped spheres as well as tamped, infinitely tall cylinders containing fissionable material. The method considered did not apply to the interaction between bae cylinders. In practice, the interaction between vessels in a separations plant or between storage units in an array more nearly approaches the bare condition than it does the tamped condition. The formulation of a method that is applicable to bare or water-tamped and to tall or short vessels will be presented at this time.

Introduction: In anticipation of the design of equipment for heat transfer tests, a series of short exposure corrosion tests was initiated in an effort to determine the order of magnitude of the corrosion involved. Information was required on the effect on corrosion rates of applying a potential between two concentric tubes, the annulus between them containing condensate water.