Download enviros - Safegrounds

Slide 1
A Carillion plc company
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
30th September 2008
A Carillion plc company
Introduction
• Radioactive vs non-radioactive - what are the
differences?
• What are the implications?
• Impacts on investigation design and execution.
Slide 3
A Carillion plc company
Comparison
Similarities:
• Like any other complex industrial site
• Stringent HS&E requirements
• Interactions with other site operations
• Non-radioactive contaminants
Differences:
• Potential for radioactive contamination
Slide 4
A Carillion plc company
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
Slide 5
A Carillion plc company
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
Slide 6
A Carillion plc company
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
Slide 7
A Carillion plc company
Impacts on Design and Execution
• Selection of investigation techniques
• Impacts on programme
• Disposal of arisings
• Health and safety considerations
Slide 8
A Carillion plc company