Document ID: chunk:federal_register_of_legislation:C2024C00562:schedule:3:p24
Version: federal_register_of_legislation:C2024C00562
Segment Type: schedule
Provision Reference: sch 3 (pt 24/26)
Character Range: 214811–217809

Batch data means the total weight of each element of nuclear material and, in the case of plutonium and uranium, the isotopic composition when appropriate. The units of account shall be as follows:
    (a) Grams of contained plutonium;
    (b) Grams of total uranium and grams of contained uranium‑235 plus uranium‑233 for uranium enriched in these isotopes; and
    (c) Kilograms of contained thorium, natural uranium or depleted uranium.
For reporting purposes the weights of individual items in the batch shall be added together before rounding to the nearest unit.
E. Book inventory of a material balance area means the algebraic sum of the most recent physical inventory of that material balance area and of all inventory changes that have occurred since that physical inventory was taken.
F. Correction means an entry into an accounting record or a report to rectify an identified mistake or to reflect an improved measurement of a quantity previously entered into the record or report. Each correction must identify the entry to which it pertains.
G. Effective kilogram means a special unit used in safeguarding nuclear material. The quantity in effective kilograms is obtained by taking:
    (a) For plutonium, its weight in kilograms;
    (b) For uranium with an enrichment of 0.01 (1%) and above, its weight in kilograms multiplied by the square of its enrichment;
    (c) For uranium with an enrichment below 0.01 (1%) and above 0.005 (0.5%), its weight in kilograms multiplied by 0.0001; and
    (d) For depleted uranium with an enrichment of 0.005 (0.5%) or below, and for thorium, its weight in kilograms multiplied by 0.00005.
H. Enrichment means the ratio of the combined weight of the isotopes uranium‑233 and uranium‑235 to that of the total uranium in question.
    I. Facility means:
    (a) A reactor, a critical facility, a conversion plant, a fabrication plant, a reprocessing plant, an isotope separation plant or a separate storage installation; or
    (b) Any location where nuclear material in amounts greater than one effective kilogram is customarily used.
J. Inventory change means an increase or decrease, in terms of batches, of nuclear material in a material balance area; such a change shall involve one of the following:
    (a) Increases:
        (i) Import;
        (ii) Domestic receipt: receipts from other material balance areas, receipts from a non‑safeguarded (non‑peaceful) activity or receipts at the starting point of safeguards;
        (iii) Nuclear production: production of special fissionable material in a reactor; and
        (iv) De‑exemption: re‑application of safeguards on nuclear material previously exempted therefrom on account of its use or quantity.
    (b) Decreases:
        (i) Export;
        (ii) Domestic shipment: shipments to other material balance areas or shipments for a non‑safeguarded (non‑peaceful) activity;
        (iii) Nuclear loss: loss of nuclear material due to its transformation into other element(s) or isotope(s)