Group 1 - Particle Accelerators

  1. Complete the Radiation Machine Facility Registration Form (MDE RX1)
  2. Include the installation reports from service companies (FDA 2579 and/or MDE RX-24).
  3. Complete the Payment Transmittal Form.
  4. Include the annual fee for the radiation machine tube.
  5. Complete the Application for Certified Registration of Particle Accelerator (MDE RX3).  This application must be reviewed by the Radiation Machines Division prior to the issuance of a registration.
  6. Submit a plan review (shielding review of the location of the machine and surrounding areas).
  7. If a used radiation machine is purchased/installed, then the radiation machine, in addition to registration, must undergo a certification inspection by a State licensed private inspector prior to operation.
  8. Individual personnel dosimetry (film badges) must be worn by machine operators.
  9. The check and the above required items must be mailed to the Department at the following address:

Mailing address:

Maryland Department of the Environment
P.O. Box 2198
Baltimore, MD 21203-2198


To complete the registration process, mail required forms and a copy of the check to the P.O. Box above, or fax to (410) 537-3198, ATTN: Radiation Machines Division, or e-mail to

All of the above items are needed prior to the Department granting the facility a registration.  The use of a radiation machine prior to registration is strictly prohibited and will result in enforcement action.

Contact Information

If you have any questions or require additional information, please contact Eva Nair at (410) 537-3193 or toll free 800-633-6101, extension 3193, or via email at​.

Additional Links

X-Ray Application Forms and Guidance

Radiological Health Program


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