Practical Radiation Protection —
Training activity: 8

Details

Select and use appropriate instrumentation and monitoring equipment for the measurement of radiation, including:

• X-ray imaging
• Nuclear medicine
• External beam radiotherapy

Type

Entrustable training activity (ETA)

Evidence requirements

Evidence the activity has been undertaken by the trainee repeatedly, consistently, and effectively over time, in a range of situations. This may include occasions where the trainee has not successfully achieved the outcome of the activity themselves. For example, because it was not appropriate to undertake the task in the circumstances or the trainees recognised their own limitations and sought help or advice to ensure the activity reached an appropriate conclusion. ​

Reflection at multiple timepoints on the trainee learning journey for this activity.

Considerations

• Advantages/disadvantages of different types of instruments and equipment
• Major types of measurement/monitoring e.g. passive vs active monitoring
• Choice of instrument or equipment for a measurement
• Importance of calibration, testing and maintenance of instrumentation
• Use of instrumentation and equipment to make measurements
• Uncertainties involved in measurements

Reflective practice guidance

The guidance below is provided to support reflection at different time points, providing you with questions to aid you to reflect for this training activity. They are provided for guidance and should not be considered as a mandatory checklist. Trainees should not be expected to provide answers to each of the guidance questions listed.

Before action

• What defines successful selection and appropriate use of instrumentation for different radiation modalities (x-ray, nuclear medicine, radiotherapy)?
  • Discuss with your Training Officer to gain clarity on the expected types of measurements (e.g., dose rate, contamination, spectral analysis), the specific equipment available, and the criteria for selecting the ‘most appropriate’ instrument for each scenario.
• Reflect on any previous hands-on experience with radiation detection equipment. Have you operated a survey meter or handled a personal dosemeter before?
  • Have you observed the calibration and testing of radiation instruments and monitoring equipment?
  • Consider possible challenges you might face, such as understanding the energy dependence of a detector, correctly setting up the instrument, calibrating it, or identifying sources of error in measurements. How might you handle these challenges?
  • When would you need to seek advice on complex instrument faults, advanced calibration techniques, or selecting highly specialised detectors for unusual measurement conditions?
  • Are you confident in your theoretical knowledge of detectors, or do you feel uncertain about the practical aspects of their use and calibration?
• Identify specific skills you want to develop, such as the practical operation of a range of radiation monitoring equipment, understanding instrument responses to different radiation fields, and troubleshooting common issues during measurements.
  • Identify the specific insights you hope to gain into the practical nuances of radiation measurement, the importance of calibration, and how instrument limitations can impact the reliability of dose assessments.
• What additional considerations do you need to make?
  • Consult actions identified following previous experiences related to laboratory work, equipment handling, or data collection.
  • Identify important information you need to consider, such as the operational manuals for specific instruments, their calibration certificates, and the particular radiation characteristics (e.g., energy, type) of the source you intend to measure.

In action

• Are you noticing anything surprising or different from what you anticipate during the selection and use of radiation monitoring equipment?
  • Are you encountering situations such as:
    • A new or unusual instrument response that defies initial expectations (e.g., unexpected background readings, erratic measurements)?
    • An unexpected equipment malfunction or battery issue during use?
    • Conflicting data points from different instruments measuring the same field, making critical evaluation of appropriateness difficult?
    • An anticipated instrument suitability for a specific radiation type (e.g., X-ray vs. gamma) that turned out to be incorrect during your practical application?
  • How does this experience compare with previous experiences of similar instrument handling or measurement activities?
• How is any unexpected development being resolved as you progress during the instrument selection and use?
  • Are you successfully managing the situation yourself, or do you need support because it is beyond your current scope (for example, if troubleshooting complex instrument issues is incomplete or requires senior review)?
  • What are you learning in this moment as a result of any unexpected development? For example, are you learning a new approach to field calibration of instruments, or a more robust method for identifying the limitations of specific detectors for different radiation energies?
• How is this impacting your actions? For example, are you responding to the situation appropriately?
  • Are you adapting or changing your choice of instrument or your measurement technique? Is it affecting your ability to undertake the activity independently?
  • Consider the steps you are taking in the moment, such as:
    • Are you re-checking instrument specifications or operating manuals immediately?
    • Are you consulting relevant calibration certificates or best practice guides for radiation measurements more thoroughly than planned?
    • Are you seeking advice from a more experienced colleague or your training officer to understand the instrument anomaly or unexpected measurement?
    • Are you changing your initial approach to selecting an instrument for a specific measurement task based on new insights?

On action

• What happened during the selection and use of radiation measurement instrumentation?
  • Summarise the key points of your experience selecting and using instruments for X-ray imaging, nuclear medicine, and external beam radiotherapy.
  • What specific events, actions (e.g., calibration, measurement technique), or interactions felt important, including your own feelings during the process?
  • Did you have any ‘reflect-in-action’ moments where you had to adapt your choice of instrument or measurement technique based on the specific radiation source or environment?
• How has this instrumentation experience contributed to your developing practice?
  • What learning can you take from this experience? What strengths did you demonstrate in selecting the most appropriate instrument for different radiation types and applications, and in using them correctly?
  • What skills and/or knowledge gaps were evident regarding the principles of operation, calibration, or limitations of different radiation monitoring equipment?
  • Compare this experience against previous engagements with similar activities. Were any previous identified actions for development achieved? Has your practice in selecting and using radiation instrumentation improved?
  • Identify any challenges you experienced (e.g., instrument malfunction, unexpected readings, difficulty in positioning the detector) and how you reacted to these. Did this affect your ability to undertake the measurement effectively? Were you able to overcome the challenges?
  • Identify anything significant about the activity, such as needing to seek advice or clarification on instrument specifications, operational procedures, or troubleshooting, or needing to escalate a situation where appropriate equipment was unavailable.
• What will you take from the instrumentation selection and use experience moving forward?
  • Identify the actions or ‘next steps’ you will now take to support the assimilation of what you have learned, including from any feedback received on your choice or use of equipment.
  • What will you do differently next time you need to select and use radiation measurement instrumentation for different modalities?
  • Has anything changed in terms of what you would do if you were faced with a similar situation requiring radiation measurement?
  • Do you need to practise any aspect of instrument selection, calibration, or operational use further?

Beyond action

• Have you reviewed your previous reflections and identified actions for improvement related to selecting and using appropriate instrumentation for radiation measurement across various modalities (X-ray imaging, Nuclear medicine, External beam radiotherapy)?
  • What specific steps did you identify to enhance your practice in instrument selection, calibration, and practical use?
  • Have you successfully implemented these actions in subsequent similar activities involving instrumentation?
  • Are you now confident and prepared to demonstrate this accumulated learning into practice for future instances of selecting and using radiation monitoring equipment?
  • Did discussing your approach to instrument choice and usage with others offer new perspectives or insights that changed your understanding of different instrument types, their applications, or practical challenges?
• How does the learning gained from repeatedly selecting and using radiation instrumentation and reflecting on it support your preparation for observed in-person assessments for the module?
  • How has your practice in selecting and using appropriate radiation instrumentation developed and evolved over time through these multiple engagements?
  • Can you identify specific instances where your understanding of instrument principles, matching instrumentation to tasks, or practical measurement techniques has improved?
  • Furthermore, how has this holistic reflection helped you better recognise when an aspect of instrumentation selection or use might be beyond your current scope of practice, and when to seek advice or escalate?

Relevant learning outcomes

#	Outcome
# 3	Outcome Perform and interpret measurements of radiation, draw conclusions on adequacy of control measures and advise on further action.