SAFESPUR and Brownfield Risk Management Forum

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SAFESPUR and Brownfield Risk Management Forum

• Radioactive vs Non-radioactive Contamination
  Tools and Techniques Showcase

Site Characterisation Practical Experiences and
Application on Nuclear Licensed Sites
Pete Longley
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Introduction

• Radioactive vs non-radioactive - what are the
  differences?
• What are the implications?
• Impacts on investigation design and execution.

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Comparison

• Similarities
• Like any other complex industrial site
• Stringent HSE requirements
• Interactions with other site operations
• Non-radioactive contaminants

• Differences
• Potential for radioactive contamination

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Implications

• Management Issues
• Preparation of project documentation (Health and
  Safety Plan, Method Statements and Risk
  Assessments).
• Allowance for HP monitoring
• Time for entry and exit in to controlled areas
• Plan for C2 working
• Consider release of samples

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Implications

• Contamination control
• Selection of clean drilling techniques
• Difficult to achieve with traditional methods
  (Shell and Auger, trial pitting etc)
• Consider open flush drilling system
• Employ conscientious drillers

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Implications

• Waste minimisation
• Identify potential waste streams
• Establish site waste disposal capability
• Use narrowest diameter drilling equipment
  possible to achieve a good borehole
• Use dry methods where ground conditions allow to
  reduce wet waste (dynamic sampling)
• Consider disposal of arisings and samples

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Impacts on Design and Execution

• Selection of investigation techniques
• Impacts on programme
• Disposal of arisings
• Health and safety considerations