1. Presentation to the Environmental Health Sub-committee – November 2013
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2. Contents Contents Aerial Discharges Liquid Discharges
Critical Group Dose
Waste Management
Summary
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3. Aerial Discharges
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4. Liquid Discharges
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5. Liquid Discharges
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6. Critical Group Dose
Summary of critical group doses in the vicinity of the LLWR (µSv)
Pathway
2005
2006
2007
2008
2009
2010
2011
2012
Seafood consumption
0.01
Inhalation (adults)
0.33
0.01a
0.43
0.49
0.34
0.36
0.41
Milk consumption (infants)
3.1
3.8
0.8
0.7
1.85
0.47
0.77
Fruit and vegetables (adults)
1.1
0.6 -
All discharge pathways (infants)
3.7
4.2
1.2
2.19
0.9
Direct radiation 84 36 30 31 35
Total dose to critical group 88 85 37 32
UK average Annual dose from background radiation = 2600µSv
a. Pu(α), 241Pu, and 241Am analysis excluded from the monitoring schedule.
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7. Waste Management by LLWR
During 2012/ m3 of waste was processed and emplaced in Vaults at LLWR. LLWR received 296 ISO containers.
Activity disposal at LLWR, reported monthly to the EA, remains within the authorised limits.
Vault 9 remains in use for storage.
During 2012/13 Financial year a significant volume of waste was segregated and diverted from the LLWR.
8135m3 (estimated based on 3568te^) sent for metal treatment
782m3 sent as combustible.
3658m3 sent as VLLW
(1954m3 sent via supercompaction)*
^ Based on 2.28m3/te
* Provides a volume reduction prior transfer to LLWR.
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8. Waste Management
Application for a revised Permit submitted to the Environment Agency (based on the LLWR ESC).
Agency consultation on application underway.
New WAC based on 2011 ESC due to be adopted by end of March 2014.
ESC implementation continues, implemented as a 'live' safety case.
Planning application process restarted for future vaults and closure works associated with ESC.
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9. Discharges are very low and significantly below historical limits.
Summary
Discharges are very low and significantly below historical limits.
Doses remain very low.
Waste receipt continues to be managed safely with increasing volumes being segregated/diverted for treatment.
Permit application submitted.
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