Radioactive waste management part 2
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RADIOACTIVE WASTE MANAGEMENT PART 2. A RAHMAN RWE NUKEM Ltd (UK). Name, company and chapter. Sources of Radioactive Waste. Operational activities POCO Decontamination Dismantling Land remediation. Management of Radioactive Waste. From generation of waste. To disposal of waste. Hazards.

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RADIOACTIVE WASTE MANAGEMENT PART 2

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Radioactive waste management part 2

RADIOACTIVE WASTE MANAGEMENTPART 2

A RAHMAN

RWE NUKEM Ltd (UK)

Name, company and chapter


Sources of radioactive waste

Sources of Radioactive Waste

  • Operational activities

  • POCO

  • Decontamination

  • Dismantling

  • Land remediation


Management of radioactive waste

Management of Radioactive Waste

From generation of waste

To disposal of waste


Hazards in rwm

Hazards

Disposed

Unmanaged

Managed

Conditioned

Variation of hazards with RWM

Hazards in RWM


Physical states of waste

Physical States of waste

Solids: Contaminated materials, equipment, pipes, cables, concrete, rubbles etc

Liquids: Arising from decontamination work, waste treatment plant, water purification system etc.

Gases: Arising from decontamination processes, dismantling activities etc.


Waste types

Waste types

Primary wastes: contaminated and activated original materials.

Secondary wastes: from processing of primary waste, from decontamination and other associated processes.


Treatment objectives

Treatment objectives

  • Volume reduction

  • Removal of activities

  • Suitable composition


Conditioning objectives

Conditioning objectives

  • Conversion to solid form

  • waste form

  • Suitable for long term storage or disposal


Radioactive waste management part 2

Waste and materials

Pre-treatment

Treatment

Cleared

Material

(general)

Cleared

Material

(specific)

Conditioning

Storage and Disposal


Various types of treatment

Various types of Treatment

  • Solid waste:(i) Compaction

    (ii) Incineration

  • Aqueous effluent:(i) Chemical precipitation

    (ii) Evaporation

    (iii) Ion exchange

  • Gaseous waste:(i) HEPA filters

    (ii) Adsorption or chemisorption

    (iii) Scrubbing

    (iv) Cryogenic retention


Types of treatment for solid waste

Types of Treatment for Solid Waste

  • No compaction, no incineration

  • No compaction, incineration

  • Pre-compaction, no incineration

  • Pre-compaction, incineration


Burnable waste compactor low force compactor

Burnable Waste Compactor(Low force Compactor)


In drum compactor low force compactor

In-drum Compactor(Low force Compactor)


Pallet drying facility petra

Pallet Drying Facility (PETRA)

  • At pressures of 20 – 50 mbar (abs)

  • At temperatures of about 3000C

  • Up to about 8 drums at a time


Super compactor with horizontal piston fakir

Super-compactor with horizontal piston (FAKIR)

1: Exit2: Sliding door

3: Jib crane4: Grab

5: Compactor chamber6: Tipping device

7: Charger8: Working platform

9: Hydraulic system and control10 Hydraulic cylinder

11: Ram


200 l drum

200 l drum


Compacting a metal drum

Compacting a metal drum


Incineration shaft kiln with tipping grate

Incineration – Shaft kiln with tipping grate


Evaporation plant for llw

Evaporation plant for LLW


Waste receipt assay characterisation and super compaction wracs at dounreay

Waste Receipt Assay Characterisation and Super-compaction (WRACS) at Dounreay


Super compacted drum on a product line at dounreay

Super-compacted drum on a product line at Dounreay


Pucks lowered by crane on a hhiso container at dounreay

‘Pucks’ lowered by crane on a HHISO container at Dounreay


Hhiso to the monitoring and inspection area at dounreay

HHISO to the monitoring and inspection area at Dounreay


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