Radiation Safety Manual - Chapter 14: Analytical X-Ray Machines


Radiation Safety Manual - Chapter 14: Analytical X-Ray Machines

Table of Contents

  1. Radiation Emergency Procedures
  2. Medical Advice/Incident Reporting
  3. Safety Procedures

Radiation Emergency Procedures

If you are exposed to the direct x-ray beam, or suspect an exposure, immediately follow these steps:

  1. Shut off the x-ray beam.
  2. Remain calm. Call the contacts below until:
    1. medical advice is obtained and
    2. the incident is reported.

Medical Advice/Incident Reporting

  • EHS: 919-962-5507
  • AFTER HOURS CONTACT, UNC Police: 911 (Ask for Radiation Safety Assistance)

Safety Procedures

X-Ray diffraction and spectrographic devices generate in-beam radiation dose rates of 30 to 7000 rads/sec. Severe tissue damage can be inflicted by very brief exposures to these high dose rates. Surgical treatment or amputation may be required when small body parts, such as fingers, receive greater than 1000 rads.

It is imperative that stringent safety precautions be applied when using these devices. Safety precautions include mechanical and electrical guards as well as proper training and instruction. The following safety procedures have been established to help prevent accidents. Adherence to these rules is mandatory.

  1. No person shall be permitted to operate analytical x-ray machines until they have:
    1. Received instructions in relevant radiation hazards and safety.
    2. Received instructions in the theory and proper use of the machine.
    3. Demonstrated competence, under supervision, to safely use the machine.
  2. Radiation exposure to the operator and others shall be kept as low as practicable. Radiation safety surveys shall be conducted periodically.
  3. Operators shall wear finger-ring and body radiation badges, as assigned by the radiation safety officer, while using the equipment.
  4. Operators shall remain in constant attendance while the x-ray beam is on, or the device shall be secured against access by unauthorized persons.
  5. Any changes in the status or location of a device shall be referred to the radiation safety officer for prior approval.

Back to Chapter Thirteen

Proceed to Chapter Fifteen


Article ID: 132065
Thu 4/8/21 9:23 PM
Sun 7/3/22 11:58 AM
Effective Date
If the date on which this document became/becomes enforceable differs from the Origination or Last Revision, this attribute reflects the date on which it is/was enforcable.
10/02/2020 10:20 AM
Issuing Officer
Name of the document Issuing Officer. This is the individual whose organizational authority covers the policy scope and who is primarily responsible for the policy.
Issuing Officer Title
Title of the person who is primarily responsible for issuing this policy.
Executive Director
Last Review
Date on which the most recent document review was completed.
10/02/2020 10:20 AM
Last Revised
Date on which the most recent changes to this document were approved.
01/23/2019 12:00 AM
Next Review
Date on which the next document review is due.
09/01/2025 12:00 AM
Date on which the original version of this document was first made official.
04/01/2014 12:00 AM
Responsible Unit
School, Department, or other organizational unit issuing this document.
Environment, Health and Safety