NU Class 7 Test case studies
NU Class 7 Test · Put your knowledge to work in context.
NU Class 7 is the name of this exam, and at present that name is the only attribute we can state with confidence. No official content outline, candidate handbook or syllabus has been supplied to us, so this page deliberately leaves item counts, time limits, fees, pass marks, retake rules and validity periods blank rather than filling them from memory or from forum posts. The NU Class 7 Test case studies are 5 cases and about 4,154 words.
1Deck Contamination After an Exclusive-Use Hospital Delivery
A road vehicle operating under exclusive use has just delivered three Type A packages of technetium-99m generators to a hospital radiopharmacy. Before releasing the vehicle, the driver - who also acts as the carrier's radiation protection adviser - takes smear samples from the load bed.
786 words, about 4 min2Transport Index Accumulation on a Multi-Drop Run
A carrier plans a single-vehicle multi-drop road run with five stops. The manifest lists: two Category II-YELLOW packages at TI 3.0 each; four II-YELLOW packages at TI 1.5 each; one III-YELLOW package at TI 8.0; and one III-YELLOW overpack whose label shows TI 4.0 with a handwritten note 'contains 2 packages, contents TI 6.2'.
810 words, about 4 min3Crushed Corner and Powder at a Freight Terminal
At 02:40 a warehouse handler finds a 40 kg fibreboard box on a pallet with a crushed lower corner and a fine pale-yellow powder scattered across the pallet and about 30 cm of concrete floor. The label is Category II-YELLOW with TI 0.8; the consignment note reads UN 2915, RADIOACTIVE MATERIAL, TYPE A PACKAGE, non-special form, 1.2 GBq, contents: uranium compound.
871 words, about 4 min4Criticality Safety Index Limit in a Transit Store
A fuel-fabrication site's transit store is an 8 m by 6 m bay with a painted floor, one door and no sprinkler coverage. It currently holds five packages, each labelled CSI 10, stacked two high against the north wall.
857 words, about 4 min5One Driver, Two Runs a Month, and a Suspicious Dosimetry Record
A small carrier's only Class 7 driver has a recorded dose of 6.4 mSv for the year to the end of July, from a chest badge. The next run is a 4-hour round trip with three packages at TI 4.0, 2.5 and 1.5, hand-loaded into a 3.5 t van with no partition.
830 words, about 4 min