Site Identification
The extent and boundary of the site to be characterised is identified. The site is demarcated into radiological area classifications. If it forms part of a larger site, interactions and interfaces regarding utilities (water, drainage, ventilation etc.) should be considered.
Historical Assessment
A review of past and ongoing operations and all incident/accident reports. The licensing file(s) are an immense source of information. Based on past/ongoing operations, areas likely to be impacted and the extent of impact should be determined. This exercise can also indicate potential contamination migration beyond the site through, for example, ground water.
Scoping Survey
The extent and magnitude of radioactivity is estimated and area classifications are confirmed or revised. Major contaminants (both radiological and non-radiological) are identified. Based on this survey, hazards, training requirements and associated costs can be assessed.
Sampling and Analysis
If rigorous characterisation is required, the following must be specified:
- Types, numbers, sizes and locations of samples
- Instrumentation requirements
- QA requirements
- Methodology for taking samples and performing analyses
- Provision for disposal of waste generated during sampling