Guidance on registration - ECHA - Europa

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<strong>Guidance</strong> on registration
Version 2.0 May 2012
Report uses (Box 2)
Chesar provides a life cycle tree structure in which the assessor can report the relevant
information with regard to the uses of the substance. This includes information relevant from
both the human health and the environmental perspective, including a tonnage break-down
into the different uses. When the assessment has been finalised, the uses reported in Box 2
can be exported to IUCLID section 3 (see section 5.2.3).
Manage assessment (Box 3)
In Box 3, the assessor carries out the exposure assessment and derives the corresponding risk
characterisation. Based on the information imported in Box 1, Chesar will already have made
suggestions on the required scope of exposure assessment and type of risk characterisation.
Depending on the substance properties and the uses, it may be sufficient to only apply the
plugged in exposure estimation tools to demonstrate control of risk: However, the assessor
may also face the situation that he needs to switch to another method (e.g exposure
assessment based on measured data), or to even combine different methods in the exposure
assessment. For situations where a qualitative risk characterisation is required, Chesar
provides support for a modified assessment-workflow. The assessor needs to make a
qualitative statement on control of risk, justifying that the operational conditions and measures
described lead to a sufficiently low level and/or likelihood of exposure.
Build exposure scenario for the CSR (Box 4)
Box 4 supports the building of exposure scenarios based on the uses reported in Box 2 and the
assessments carried out in Box 3. The generation of the full CSR is also launched from Box 4,
including those chapters of the CSR (chapter 1 to 7) that are directly populated with
information from IUCLID.
Build exposure scenarios for the SDS (Box 5)
Box 5 supports the building of exposure scenarios for communication along the supply chain
(i.e. to be annexed to the SDS). The exposure scenarios for communication are based on the
exposure scenarios built in the CSR.
Administration tool (Box 6)
Box 6 includes all functionalities with regard to the Chesar library. The library enables creation,
storage, import and export of objects that the assessor may need for his work process. The
library also provides functionalities for data exchange with other users of Chesar, or sharing of
assessments (full or parts of them) across industry. Registrants are advised to consult the
Chesar user manuals if in need of more detailed information on the use of the tool. They are
available at http://chesar.echa.europa.eu/.
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