Just Installed a Cabinet X-ray System? Your State Registration Checklist

By IRSC | Radiation Safety Consulting | October 21, 2026

The new cabinet X-ray system is installed, the vendor ran a demo, and production wants it running by Friday. One question before anyone presses the start button: who handled the cabinet X-ray registration?

In a lot of facilities, the honest answer is "I assumed the vendor did." Usually, they didn't. The vendor certifies the cabinet. Registering it with the state, training operators, writing procedures, and keeping records is typically the owner's job. Here's how that split works, plus a checklist for your first 30 days.

Who regulates a cabinet X-ray system?

A cabinet X-ray system is an X-ray unit built inside a shielded enclosure, so the beam stays in the box while operators work outside it. Think parcel and baggage screeners, food inspection systems, and industrial cabinets used to inspect castings, welds, and electronics.

Two layers of rules apply, and they divide the work between the manufacturer and you.

The manufacturer: FDA's performance standard (21 CFR 1020.40)

Cabinet X-ray systems must meet FDA's performance standard in 21 CFR 1020.40. Radiation emitted can't exceed 0.5 milliroentgen in one hour at any point 5 centimeters outside the cabinet's external surface. The standard also requires door interlocks, a key actuated control, "X-RAY ON" indicators, and warning labels.

The manufacturer certifies the system meets these requirements before it ships. That certification covers the machine. It doesn't cover how your facility uses it.

The owner: your state radiation control program

X-ray machines aren't regulated by the NRC. The NRC oversees radioactive materials, while machine produced radiation falls to your state radiation control program. Most states require owners to register X-ray equipment and follow state rules on training, procedures, surveys, and records. X-ray registration requirements, fees, and deadlines vary by state, so always confirm your own state's regulations.

Cabinet X-ray registration and the rest of the owner's list

1. Cabinet X-ray state registration

Register the system with your state radiation control program. Many states set a deadline after you acquire or install the unit, charge a registration fee, and require periodic renewal. Bought a used cabinet, or moved one to a new address? That usually means a new or updated registration too.

If your facility also holds a radioactive materials license, a move or expansion that triggers a new X-ray registration may affect that license as well. Here's how to tell when your license needs an amendment.

2. A responsible person

Most states expect someone to be accountable for radiation safety, often called the Radiation Safety Officer (RSO) or radiation safety contact. Name that person, make sure they meet your state's qualification requirements, and keep their contact information current on your registration.

3. Operator training

Operators generally need training before they run the system. A vendor demo covers which buttons to press, not your facility's safety rules. Plan for site specific training and keep records of who was trained, on what, and when.

Need a starting point? IRSC's General Radiation Safety Training: Radiation Machines (X-Ray) course is a self paced online course that covers radiation fundamentals, safe work practices, and regulatory awareness, with a certificate of completion for your records. Pair it with a walkthrough of your own system and procedures, and you've covered both halves of operator training.

4. Written procedures and a cabinet X-ray radiation safety manual

Written operating and emergency procedures tell operators what to do, what to do when something goes wrong, and what never to do, like defeating an interlock. Many facilities pull all of this into a radiation safety manual written for their specific system and site, so the RSO, operators, and inspectors are all working from the same playbook.

5. Surveys, checks, and records

States commonly require a radiation survey at installation and after relocation or modification, periodic checks of interlocks and warning lights, required postings for workers, and records you can hand an inspector. Some facilities also need personnel monitoring, such as dosimeter badges, depending on state rules and expected doses.

Common pitfalls

1. Assuming the vendor registered it. Vendors install and certify. Registration is usually on the owner.
2. Treating the demo as training. A sales demo isn't documented safety training, and an inspector will ask for the records.
3. Moving the cabinet without a new survey. A new location changes what's around the system, from walls to workstations, so the survey needs to be repeated.
4. Modifying the cabinet. Cutting a new port or changing panels can affect its certification under 21 CFR 1020.40. Talk to the manufacturer or a consultant before anyone picks up a tool.

Your first 30 days checklist

• Confirm your state's registration requirements and deadline, then submit the registration
• Name your RSO or radiation safety contact
• Train every operator before they run the system, and document it
• Put written operating and emergency procedures at the system
• Complete the required survey and interlock and warning light checks, and record the results
• Put required postings up and set up a records file for inspections