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Paragraph 6

Original text. Later amendments are not shown.

An array of packages shall be subcritical. A number, “N” shall be derived assuming that if packages were stacked together in any arrangement with the stack closely reflected on all sides by water 20 cm thick (or its equivalent) both of the following conditions would be satisfied:

(a)

Five times “N” undamaged packages without anything between the packages would be subcritical; and

(b)

Two times “N” damaged packages with hydrogenous moderation between packages to the extent which results in the greatest neutron multiplication would be subcritical.