Accounting

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Most important method of nuclear material control in a nuclear facility. Its goal is the quantitative determination of the nuclear material to detect inventory deficiencies (unauthorised diversions). The accounting relates to a defined, limited, walled-in space the contents of which results from the difference of all continuously measured nuclear material additions and withdrawals. At the end of the accounting period the plant inventory is determined by an independent direct measurement. See 'MUF'.

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