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Notification of Intention to Work with Ionising Radiation: Compliance and Advantages of XRF Analysis

This notification outlines the requirements for working with ionising radiation including the need for 28 days notice, risk assessment, RPA training, and personal dosimeter use. It also discusses the advantages and limitations of XRF analysis, showcasing its good correlation with traditional methods, extensive sampling capabilities, and cost-effective screening method.

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Notification of Intention to Work with Ionising Radiation: Compliance and Advantages of XRF Analysis

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Presentation Transcript

  1. Notifications • HSE • Notification of intention to work with ionising radiation • 28 days notice required • irrnot@hse.gsi.gov.uk • Risk assessment • RPA • Training • Personal dosimeter

  2. Limits of detection

  3. Correlation with lab results • Good correlation with traditional analysis for all heavy metals tested • Very close correlation with soil standard • Lead levels slightly lower with XRF

  4. Further unexpected results • Vegetable testing has shown no uptake of As despite levels SGV x 50 • Raised Pb in vegetable on a site with concentrations lower than former SGV

  5. Limitations of XRF • Not at present for very light elements • Limit of detection too high for Cd • Elemental analysis, not compounds • Sensitive to moisture content – dry soils with absorbent paper first • Sensitive to particle size – remove stones • Safety training required

  6. Advantages of XRF • Good correlation with traditional analysis • Extensive sampling possible in short time • High degree of confidence in delimiting area for remediation/hotspots • Screening method • Reduces extent of remediation • Huge saving in time • Huge saving in cost of remediation

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