Section 144-220-E-C-10 - Quarterly inventoryA. Each licensee and registrant shall conduct a physical inventory at intervals not to exceed three months, to account for all sources of radiation and for devices containing depleted uranium received and possessed under this license. B. Each licensee and registrant shall maintain records of the inventory in accordance with E.30.10-144 C.M.R. ch. 220, § E-C-10