Appendix CRF - Part 3 - Northamptonshire County Council

Radiological Assessment 0820-2
Version 2
Scenario name Description Hazards
Normal operations
Barrier failure
Leachate spillage
Site remediation or
re-engineering
Fire
Expected operation of the
landfill up to capping and
closure, as approved by the
relevant Agency. Doses to site
workers and to the public are
considered.
Failure of the artificial sealing
liner and geological barrier
during operations. Doses to the
public are considered.
Unintentional release of
leachate to surface water.
Doses to the public are
considered.
Workers expose waste during
operations to remediate
containment failure or to
enlarge or otherwise reengineer
site.
Fire releases radioactivity.
Doses to site workers and to
the public are considered.
Gas Release
Liquid release (leachate)
Aerosols (leachate)
Direct irradiation
Liquid release (leachate)
Liquid release (leachate)
Solid release (dust while
uncovered)
Direct irradiation
Solid release (dust), gases
and vapour
Table 3.1: Operational scenarios included in the SNIFFER methodology and the
associated hazards (SNIFFER 2006a).
The last two of the scenarios in Table 3.1 are considered to encompass the range of
other events that may result in a site worker being exposed, such as short-term contact
with leachate.
Galson Sciences Limited 17 14 July 2009
WS010001/ENRMF/CONSAPPCRF 567