WATER GAIN BEHAVIOR OF OUTDOOR CLOSED STRUCTURES
AMERICAN SCIENTIFIC CORP ALEXANDRIA VA
Pagination or Media Count:
A model of the water gain of empty structures stored in the open is derived. Using this model and a modified Monte Carlo procedure, a statistical analysis is made of probable water gains at 12 stations by enclosures which are free breathing and which have check valves set at 2 -1, 1 -1, 1 -12 and 1 2 -12 psig. It is concluded that a breather charge of one ounce per cubic foot should give about six months storage life anywhere in the world, assuming adequate container drawdown. Even the 12 -12 psig valve required no additional desiccant although it might be expected to breathe as much as 38 times per year at Los Vegas, Nevada with 2 sigma confidence. The least pressure-vacuum spread which will not adversely affect a reasonable storage life was not discovered.
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