NS RWM6 case studies
NS RWM6 · Put your knowledge to work in context.
The NS RWM6 credential addresses radioactive waste management at the working level: the people who classify waste, run treatment and conditioning steps, operate storage or disposal facilities, monitor effluents, prepare shipments, and maintain the records that hold the whole chain together. It suits technicians, waste handlers, radiation protection staff, facility operators, and supervisors who need to show they understand both the regulatory basis and the practical controls behind every drum and package that moves through their site. The NS RWM6 case studies are 5 cases and about 3,598 words.
1Conflicting Waste Acceptance Criteria at the Interim Store
A legacy drum, 200 L, originally consigned as low-level waste, is found during a pre-transfer audit to contain a sludge with a measured dose rate of 1.8 mSv/h at contact and 0.06 mSv/h at 1 m. The site's waste acceptance criteria (WAC) for the interim store set a contact dose limit of 2 mSv/h but require that any package with a surface dose above 0.5 mSv/h be classified as intermediate-level for storage purposes and segregated.
764 words, about 4 min2Effluent Monitor Alarm During a Tank Transfer
A liquid effluent line discharges to a controlled outfall after passing a gamma monitor set to alarm at three times the normal background count rate. During a transfer of 15 m3 of decanted tank liquor to the discharge hold tank, the monitor alarms and the automatic isolation valve closes.
755 words, about 4 min3Package Dose Rate Dispute Before Transport
A consignor prepares a Type A package containing 3.7 GBq of a radionuclide with a half-life of 60 days, packed 14 days after assay. The package is an industrial drum with a measured surface dose rate of 1.9 mSv/h and a transport index determined from the 1 m dose rate of 0.09 mSv/h.
713 words, about 4 min4Groundwater Monitoring Trend at a Disposal Facility
A near-surface disposal facility has a groundwater monitoring network of eight wells, four upgradient and four downgradient. Over the last four quarterly sampling rounds, tritium activity in one downgradient well has risen from 12 Bq/L to 18, 26, and 34 Bq/L, while the other downgradient wells remain between 8 and 11 Bq/L and the upgradient wells between 5 and 7 Bq/L.
692 words, about 3 min5Drill Reveals a Staffing Gap in the Emergency Plan
A site with a Category 3 emergency plan runs an exercise involving a spill of 200 L of contaminated liquid in a transfer area. The scenario requires evacuation of the transfer building, cordoning, and environmental sampling.
674 words, about 3 min