Kernersville Ir-192: Anatomy of an Unrecovered Source

Summary

On February 26, 2025, a SPEC-150 industrial radiography camera containing 74 curies of Iridium-192 was stolen from a pickup truck at a motel in Kernersville, North Carolina. The theft took less than 90 seconds. As of January 2026, the device has not been recovered.

This is a Category 2 source—capable of causing severe injury or death if the shielding is breached. It's the most dangerous type of radioactive source routinely stolen in the United States. And it's still out there.

What Happened

The Theft

The device belonged to IQS Inspections, an industrial radiography company. A radiographer was traveling for work and stayed overnight at the Sleep Inn motel on Heartland Drive in Kernersville, just off Interstate 40.

The radiography camera was stored in the bed of a pickup truck, inside the toolbox. Sometime during the night of February 26, a thief accessed the truck and removed the device. The theft was discovered the morning of February 27 when the radiographer went to retrieve the equipment.

Hotel security footage captured the incident: a Chevrolet sedan pulled into the parking lot around 7:00 AM. A man exited, walked to the truck, opened the toolbox, took the equipment, and drove away. The entire theft took approximately 60–90 seconds.

The Device

The stolen item was a SPEC-150 Industrial Radiography exposure device—commonly called an "IR camera" in the industry. Key specifications:

The device is designed for gamma radiography—using radiation to image internal structures of welds, pipes, and concrete, similar to medical X-rays but for industrial applications. The Ir-192 source is sealed inside a tungsten-shielded "pig" within the camera body. The outer housing is titanium.

The Response

North Carolina DHHS issued a public alert on February 28, warning residents not to approach the device if found and to stay at least 30 feet away. The Radiation Protection Section activated its emergency response protocols.

Local law enforcement, including Kernersville Police, began investigating. Pawn shops and scrap dealers in the region were notified to watch for the device.

As of this writing, the device remains unrecovered.

Why This Source Matters

Category 2: The Danger Zone

The IAEA categorizes radioactive sources from 1 (most dangerous) to 5 (least dangerous). Category 2 sources are defined as capable of causing "permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours)."

At 74 Ci, the Kernersville Ir-192 source would produce a dose rate of approximately 4.5 Sv/hr (450 rem/hr) at one foot if unshielded. For context:

• 40 seconds at one foot from the unshielded source exceeds the NRC annual occupational dose limit
• Several minutes of direct handling could cause acute radiation syndrome
• Prolonged close contact with the unshielded source could be fatal

The device's shielding is robust—the source is designed to be safely transported and used in field conditions. But if someone were to disassemble the camera or damage the shielding, the consequences could be severe.

Ir-192: Short Half-Life, High Consequence

Iridium-192 has a half-life of 74 days. This means:

• The source loses approximately 1% of its activity per day
• By January 2026 (~11 months post-theft), the source has decayed to roughly 3–4% of its original activity
• It remains a Category 2 source for approximately 8–10 months, then decays to Category 3

This decay timeline creates a perverse incentive: the longer a source remains missing, the less dangerous it becomes. But for the first several months after theft, an Ir-192 radiography source is one of the most hazardous objects a civilian could encounter.

The Recovery Problem

Historical Recovery Rates

NRC data shows that approximately 80% of lost and stolen radioactive sources are eventually recovered. For Category 2 sources specifically, the recovery rate is higher—most are found within days or weeks.

The typical recovery pattern for radiography camera thefts:

1. Immediate discovery: Thief realizes the device has radiation warning labels and abandons it (often within hours)
2. Scrap yard detection: Device triggers a portal monitor at a metal recycler (days to weeks)
3. Pawn shop recognition: Dealer notices radiation trefoil and contacts authorities (days)
4. Random discovery: Device found in dumpster, roadside, or abandoned vehicle (weeks to months)

The Kernersville device has followed none of these patterns. After 11 months, it remains unaccounted for.

Why Wasn't It Recovered?

Several possibilities:

The thief kept it: Unlikely. Radiography cameras have no black market value—they're industrial tools with no consumer application. Thieves typically abandon them once they realize what they have.

It was disposed of undetected: The device could be in a landfill, waterway, or remote location where it hasn't been found. Ir-192's gamma emissions are detectable, but only if someone is looking.

It entered the scrap stream undetected: If the device reached a scrap facility without portal monitoring, it could have been processed without triggering an alarm. This is the worst-case scenario—it would mean Ir-192 contamination in the metal supply chain.

It's in storage somewhere: The device could be sitting in a garage, storage unit, or abandoned property, waiting to be discovered. This is perhaps the most likely scenario for a source missing this long.

The Security Failure

What Went Wrong

The Kernersville theft followed a depressingly familiar pattern. The key failures:

1. Overnight storage in a vehicle

NRC regulations (10 CFR 34.35) require that radiography equipment be secured when not in use. The regulations allow storage in a vehicle, but the vehicle must be locked and the device must be in a locked container.

The Sleep Inn parking lot was not a secured facility. Leaving a Category 2 source in a motel parking lot overnight—even in a locked toolbox—creates vulnerability.

2. No alarm or monitoring

The truck apparently did not have an active alarm system, or it failed to deter the thief. The theft occurred quickly and quietly enough that no one noticed until morning.

3. Predictable patterns

Radiographers traveling for work often stay at motels near job sites. This creates predictable patterns that opportunistic thieves can exploit. The thief in Kernersville knew exactly which vehicle to target and how to access the toolbox quickly.

What Should Have Happened

Industry best practices (and NRC guidance) recommend:

• Store devices in a locked, secured facility overnight when possible
• If vehicle storage is necessary, use a vehicle with an active alarm system
• Use GPS tracking on radiography cameras
• Vary routes and accommodations to avoid predictable patterns
• Consider armed transport for Category 1 and 2 sources

The Kernersville theft was preventable with basic security measures.

Implications for Practitioners

For Radiography Companies

The Kernersville case should prompt a security review:

• Audit your overnight storage practices. Are radiographers leaving Category 2 sources in motel parking lots?
• Invest in vehicle security. Alarms, GPS tracking, hardened storage compartments.
• Train radiographers on threat awareness. The thief in Kernersville knew what he was doing—he targeted the truck specifically and moved fast.

For Scrap and Recycling Operators

An unrecovered Ir-192 source could surface anywhere:

• Ensure portal monitor coverage at all intake points
• Calibrate for Ir-192 (364 keV and 296 keV gamma)—different energy than Cs-137
• Train staff to recognize radiography cameras—distinctive "pig" shape, radiation trefoil labels

For Detection Practitioners

The Kernersville source represents an ongoing detection challenge:

• Half-life decay means the source is now weaker but still significant
• If it enters the environment, it will be detectable for years
• If it was melted down, contamination could be distributed across multiple products

What to Watch

Any Recovery Report

If the Kernersville device surfaces—in a scrap yard, landfill, or random discovery—it will be reported. The absence of any recovery after 11 months is itself significant data.

Contamination Incidents

If Ir-192 contamination is detected in steel or other metals in the southeastern US, the Kernersville source should be considered as a potential origin.

Regulatory Response

The Kernersville theft may prompt NRC to review security requirements for Category 2 sources in transit. Current regulations allow vehicle storage under conditions that clearly failed here.

Sources

• NCDHHS Press Release: Missing Radioactive Material (Feb 28, 2025)
• WFMY News 2: Radioactive Camera Stolen in Kernersville
• NRC: Industrial Radiography Health Physics Review
• NCBI: Radioactive Source Uses, Risks, and Control

Related

• Incident Log: 2025-02-27 | USA, North Carolina | Theft
• Briefing: 2025 Gauge Theft Baseline
• Reference: Industrial Radiography Source Security (pending)

This Briefing is part of Radiation Monitor's operational intelligence coverage. For the full 2025 Incident Index, see Incidents.