A running log of radioactive materials entering or leaving regulatory control. Stolen gauges, lost sources, contamination events, scrap metal discoveries. No NPP operations, no medical dose errors—just the incidents that affect source security and detection systems. Updated as events are reported.
Incidents
An orphaned Cs-137 gauge entered an Indonesian smelter unscreened — cesium volatilized at 671°C, concentrated in baghouse filters as respirable radioactive dust, and contaminated an entire industrial zone. 22 neighboring factories shut down.
Incidents
A medical radiopharmacy lost a Ge-68/Ga-68 generator in mid-2024 — eighteen months later, a vehicle portal monitor at a Wisconsin scrap yard caught it before it reached the shredder. The system worked exactly as designed; the inventory failure that let it disappear is the real story.
Incidents
A Troxler 3440 moisture density gauge containing Cs-137 and Am-241/Be was stolen from an unsecured construction site in Florida — almost certainly a crime of opportunity targeting what appeared to be expensive technical equipment. Recovery status unknown.
Incidents
A returned shipment container manifested as "empty" arrived at Penn State with unexpected Na-24 residual contamination — a reverse logistics failure at the upstream disposal vendor. The university's textbook inbound receipt protocols caught it before it spread.
Incidents
A dump truck ran over a Troxler gauge during a field survey in the Everglades. The outer casing was destroyed but the Cs-137 and Am-241/Be source rod remained intact inside the shielded position — a stress-test of Type A packaging.
Incidents
A scrap yard portal monitor caught a medical Ge-68 generator lost for over a year. The system worked — but the inventory failure that let it disappear is the real story.
Incidents
CBP intercepted a Troxler moisture density gauge with a license expired for 12 years — a 'ghost source' that had fallen completely outside regulatory tracking.
Incidents
A concealed Cs-137 source volatilized in an Indonesian smelter, contaminating furnace dust, slag, and — through a non-linear pathway — frozen shrimp exports destined for the United States.
Incidents
Facility Type: Scrap Metal Recycling Isotope: Ra-226 Activity: 7 µCi Summary: Portal monitor alarm at Bellwood recycling facility triggered by Alnor Instruments dew point meter containing Ra-226 foil. Legacy device from pre-1970s. Source: NRC Event Notification
Incidents
Facility Type: Industrial (XRF) Isotope: Co-57 Activity: 395 MBq total (2 devices in one incident) Summary: Two XRF analyzers stolen from AED Expertises, Evry-Courcouronnes. Part of 8+ XRF device thefts across France in 2025. Source: ASNR France
Incidents
Facility Type: Construction Isotope: Cs-137 / Am-241/Be Activity: 9 mCi Cs-137, 44 mCi Am-241/Be Summary: Troxler 3430 run over by bulldozer at Los Angeles construction site. Source intact. Source: NRC Event Notification
Incidents
Facility Type: Construction Isotope: Cs-137 / Am-241/Be Activity: 8 mCi Cs-137, 40 mCi Am-241/Be Summary: Troxler 3430 moisture density gauge stolen in Reno. Source: NRC Event Notification