How to Run Digital Concrete X-Ray Legally in Washington State

Washington Doesn't Follow the Playbook Most Companies Expect

Most coring and GPR companies looking at a new state assume the compliance shape is roughly the same everywhere: register the equipment, designate a Radiation Safety Officer, get operators certified, keep the paperwork current. Washington breaks that assumption in a way that's easy to get wrong if you're carrying over a program built for another state.

Digital concrete X-ray equipment — a portable X-ray generator, not a sealed radioactive source — is regulated in Washington under WAC 246-227, the state's Industrial X-Ray rule, enforced by the Washington Department of Health's Office of Radiation Protection. That's consistent with how most states treat this equipment. What's not consistent is what Washington actually requires once you're under that rule: no RSO, no individual operator license, and a registration requirement that depends entirely on how many days per year you're working in the state, not on how many machines you own or how many jobs you've run elsewhere.

The Two-Track Registration System

Washington splits registration into two tracks, and which one applies to your company depends on a single number: days worked in Washington per year.

Under 60 days a year, you don't register at all. Instead, you notify the Department of Health at least three full business days before each job — the nature, duration, scope, and exact location of the work, sent to Xray@doh.wa.gov. Being properly registered in another state doesn't substitute for this. Skipping the notification is a compliance violation on its own, even if every other part of your program is in order.

At 60 days a year or more, full registration is required, and it's renewed annually. That registration doesn't go through the Department of Health directly — it's processed through the Washington Department of Revenue's Business Licensing Service, either online or by mail. On the registration form, the equipment gets classified under Line 1650, Industrial: Open Beam Radiography, at $133 per tube. Selecting a medical, dental, veterinary, or cabinet X-ray category instead is a common paperwork mistake, and it's the wrong classification for this equipment.

The practical implication: a company running occasional jobs in Washington and a company running a standing crew there are on two entirely different compliance paths, and the trigger for switching between them is simply how much work you're doing in the state that year.

Why There's No RSO — and What Replaces It

Most states Radii-x has covered require a designated Radiation Safety Officer, even if that person doesn't need to be a senior radiographer. Washington doesn't. WAC 246-227 has no RSO requirement at all — that requirement exists under a separate rule, WAC 246-243, which applies to gamma radiography with sealed radioactive sources, not X-ray machines.

Instead, the registrant — your company, as an organization — is directly responsible for the radiation safety program. In practice, that still means someone inside the company has to own the work an RSO would normally own elsewhere: keeping written procedures current, making sure every operator is trained and tested before running equipment, maintaining training records, managing dosimetry, and making sure the required documents are on-site for every job. Washington just doesn't require that person to hold a named, state-recognized title to do it.

Training and Testing: What Washington Requires, and What It Doesn't

There's no state-issued certification card or operator license in Washington, and no fixed number of training hours. What's required instead is demonstrated competency, documented by your own company.

Washington distinguishes two operator roles. The Radiographer operates the equipment or personally supervises the operation on-site, and carries responsibility for compliance during the shot. The Radiographer's Assistant can use the equipment or survey instruments, but only under the direct personal supervision of a qualified Radiographer — an assistant is never authorized to operate equipment alone.

For a Radiographer, the training has to cover the topics listed in WAC 246-227-170: how X-ray machines produce radiation, dose units and regulatory dose limits, biological effects of exposure, the dose levels the specific equipment actually produces, and the three methods of dose control — time, distance, and shielding. It also has to cover how to use and interpret survey instruments, film badges, and dosimeters; hands-on, demonstrated operation of the specific equipment and instruments used on the job; a review of WAC 246-220, 246-221, 246-222, and 246-227; and a review of accident case histories from real industrial radiography incidents. The company then administers a written or oral test internally — it doesn't get submitted to the state, but proof that it was given and passed has to live in the operator's training file.

Assistants go through a shorter path: review of the company's written procedures, demonstrated competence with survey instruments under direct supervision, and a test on both. Training records for every operator — current and former — have to be kept for at least one year after that person leaves the company.

None of this needs to be built from scratch. It's the same structure Radii-x already builds into its 40-hour training program and written procedures for other states — adapted here to Washington's specific topic list and its internal-testing approach rather than a state exam.

Dosimetry and the Documents That Travel to the Job Site

Every Radiographer and Radiographer's Assistant wears two dosimetry devices at once during operations: a film or TLD badge, assigned to one person and never shared, and a direct-reading pocket dosimeter with a minimum range of 0–200 mR. The pocket dosimeter gets zeroed at the start of the day and read and recorded at the end of it, and it needs an accuracy check at least once a year, accurate to within 30% of true exposure. If a pocket dosimeter reads off-scale mid-job, the response is immediate: stop work, and send the badge for processing right away rather than waiting for the normal exchange cycle.

Separately, five documents have to physically travel with the equipment to every job: the company's written operating and emergency procedures, copies of the applicable WAC chapters, survey records for the current period at that site, daily pocket dosimeter records for that site, and current calibration proof for every survey instrument in use. A DOH inspector can ask for these without advance notice, on any job, and not having them on hand is a citation on its own — regardless of how compliant the rest of the program is.

What Actually Trips Companies Up

Washington DOH inspects industrial X-ray operations roughly every three to four years, checking registration or notification status, written procedures, training records, dosimetry management, on-site documentation, and equipment calibration.

The pattern in what gets cited isn't exotic equipment problems. It's missing or incomplete training records, expired instrument calibrations, and on-site documentation that wasn't actually with the crew when asked for. All three are administrative, not technical — and all three are avoidable with a program built to produce that paperwork automatically as part of the job, rather than assembled after the fact when an inspector shows up. Radii-x's broader guide to running Digital Concrete X-Ray legally in the U.S. covers how this fits into the compliance picture across other states.

FAQ

Does Washington require a Radiation Safety Officer for digital concrete X-ray work?

No. WAC 246-227 has no RSO requirement — that applies under a separate rule for gamma radiography. In Washington, the registrant company itself is directly responsible for the radiation safety program.

Do I need to register if I'm only doing a few jobs a year in Washington?

If your company works fewer than 60 days a year in the state, you don't register — but you do have to notify the Department of Health at least three business days before each job. That notification requirement applies regardless of registration status elsewhere.

Is there a state exam or certification card for operators in Washington?

No. Washington doesn't issue an operator license or certification card. Compliance runs through your company's internal training program — documented instruction, a demonstrated competency check, and an internally administered test, kept on file.

How often does Washington DOH inspect industrial X-ray operations?

Roughly every three to four years. Inspections focus on registration or notification status, written procedures, training records, dosimetry, on-site documents, and instrument calibration.