Operating records
Article 8
For each material balance area, the operating records shall include, where appropriate: (a) the operating data used to determine changes in the quantities and composition of nuclear material; (b) a list of inventory items, updated to the best extent possible, and their location; (c) the data, including derived estimates of random and systematic errors, obtained from the calibration of tanks and instruments as well as from sampling and analysis; (d) the data resulting from quality control measures applied to the nuclear material accountancy system, including derived estimates of random and systematic errors; (e) a description of the sequence of actions taken to prepare for, and take, a physical inventory, and to ensure that the inventory is correct and complete; (f) a description of the actions taken in order to ascertain the cause and magnitude of any accidental or unmeasured loss that might have occurred; (g) the isotopic composition of plutonium, including its decay isotopes, and reference dates, if recorded at the installation for operational needs. When available, the data referred to in point (g) shall be communicated to the Commission on request.