Index > 2 Development of a strategy, implementation and execution program to remediate radioactively contaminated sites >

2.10 Stewardship

After remediation has been completed, the degree, extent and duration of control, if any, ranging from monitoring and surveillance to restriction of access, should be reviewed and formalised with due consideration of the residual risk [IAEA-2003]. The organisation responsible for the surveillance and verification of activities should be clearly identified Principle 4.

There are several possible end points for the remediation process [IAEA-2007a]:

  • Use of the area may be unrestricted;
  • Use of the area may need to be restricted in some or all parts and control may need to be exercised, for example, through a system of planning consents;
  • Access to the area may need to be restricted and measures may need to be put into place to enforce this.

In each case, further surveillance and monitoring may be required to confirm the long term effectiveness of the programme of remediation, and additional controls may need to be imposed on the basis of the monitoring results.

The degree, extent and duration of control, if any, ranging from monitoring and surveillance to restriction of access, should be reviewed and formalised with due consideration of the residual risk.

So long-term stewardship results from the need to address the reality that ‘clean-up’ of facilities can not in all cases achieve conditions deemed acceptable for unrestricted use and will therefore require some form of management far into the future.