Frequently Asked Questions

Technical FAQs

Information about Chesar 3 known issues can be found in the Release Notes.

If I have some files in Chesar 2.3 format, can I import them directly in Chesar 3.3? 

No, it is not possible.

If you are using a Chesar Desktop application, you need to import your Chesar 2.3 chr files one by one in Chesar 3.0. Once the files have been imported into Chesar 3.0, you can upgrade Chesar 3.0 to Chesar 3.3.

If you have a Chesar Server application, you can migrate the whole Chesar 2.3 database to Chesar 3.3 following these two steps:

  1. With the Chesar 3 migration tool, you migrate Chesar 2.3 database into an empty database (or database schema if you are using Oracle). After the migration, the destination database (or schema in Oracle) will contain data in Chesar 3 format.
  2. Connect Chesar 3.3 to the migrated database.

The Chesar 3 migration tool is available for download at https://chesar.echa.europa.eu

A detailed description of the migration from Chesar 2.3 to Chesar 3 is available in the Chesar 3 installation manual (https://chesar.echa.europa.eu/download-chesar-3.0)

Chesar 3 does not connect to IUCLID 6. How can I check and set up the web service connection?

Please read carefully the following points:

  • Make sure that IUCLID 6 is running when attempting to connect. Irrespective of whether you are using Chesar 3 Desktop or Server version, Chesar can connect to either IUCLID 6 Server or Desktop application.
  • Check the IUCLID version you are working with: not all versions of IUCLID 6 and Chesar 3 work together. Chesar 3.0 can connect only to IUCLID 6 v1.0.2 while Chesar 3.2 is compatible with the IUCLID 6 v1.1.0, v1.2.0 and v1.3.0. Chesar 3.3 is fully compatible with IUCLID v6.2.
  • Make sure that you have entered the right connection properties in Chesar Box 1 under the Web service connection settings. The connection string to IUCLID (IUCLID URL) should be in the following format: http://<IUCLID6 Server URL>:<port> or https://<IUCLID6 Server URL>:<https port>
  • Check that IUCLID 6 runs on the same computer as Chesar 3. If so and if the default IUCLID 6 ports are used (8080 for http and 8181 for https), the IUCLID 6 URL’s to be indicated in Chesar box 1 would be: http://localhost:8080  and  https://localhost:8181


If IUCLID 6 is not using the default ports, to determine the port numbers:

  1. Open the IUCLID 6 configuration file domain.xml with a browser:

    <IUCLID6 installation folder>\glassfish4\glassfish\domains\domain1\config\domain.xml

  2. Find ports for the network listeners http-listener-1 and http-listener-2 under “server-config”.

Http-listener-1 defines HTTP port and http-listener-2 HTTPS port (SSL). In the example above:

  1. HTTP port is 8080
  2. HTTPS port is 8181

 

Scientific FAQs

Information about Chesar 3 known issues can be found in the Release Notes.

What is the benefit of using the ESCom standard phrase catalogue? Where can I find it in Chesar format?

The ESCom phrase catalogue supports the IT exchange of ES information via ESComXML and the harmonisation of communication downstream in the supply chain. If translations of ESCom phrase catalogue are available, the exposure scenarios to be communicated in the extended SDS can be automatically generated in various languages.
The latest version of the ESCom standard phrase catalogue is available in Chesar format here. More information on the ESCom package can be found here.

Is it possible to extend or complement a standard phrase with free text in Chesar?

No, in Chesar you can use either a standard phrase or free text. A combination of the two is not allowed.

Is it possible to extend or complement a standard phrase with free text in Chesar?

No, in Chesar you can use either a standard phrase or free text. A combination of the two is not allowed.

Where can I find use maps in Chesar format? Is there a list already published?

Registrants will be able to find use maps generated by downstream user sector organisations in Chesar format (when available) on http://echa.europa.eu/csr-es-roadmap/use-maps.­ Use maps are developed by sector organisations and are only hosted by ECHA in a centralised place.

Which information is transferred to IUCLID 6 when exporting the uses from Chesar?
All the fields describing the uses and contributing activities are imported into IUCLID section 3.5 once you click the “Export uses to IUCLID” button in Chesar Box 4. More specifically, all conditions of use, releases and exposure estimates will populate the related fields in the contributing scenarios tabs (for environment, workers and consumers) in IUCLID section 3.5. Additionally, information on environmental assessment from aggregated sources will populate the related fields in IUCLID section 3.7. If information on use description is added or modified once the uses from Chesar have been exported to IUCLID, the information in IUCLID will be overwritten when the uses are exported again.
How can I assess a use at an elevated operating temperature in Chesar with ECETOC TRA for a liquid substance?
When ECETOC TRA is used for the exposure assessment at an elevated operating temperature (>40°C), for liquid the tool automatically selects the higher volatility band to perform the calculations. You can manually adjust the vapour pressure at the relevant (elevated) temperature by overwriting the value under the “TRA specific parameters” section in the TRA edit view in Chesar Box 3.
Is Chesar 3 able to calculate exposure estimates for solid substances?

Chesar 3 has EUSES (for environment) and ECETOC TRA (for workers, consumers) plugged in for exposure estimation.

  • EUSES supports the assessment of solid substances, as soon as basic substance properties (Molecular weight, melting point, solubility, vapour pressure, partition coefficient octanol water and biodegradation screening tests) are provided. Therefore, even for solid substances, a vapour pressure must be provided to obtain EUSES exposure estimates.
  • TRA consumers does not have specific limitations for solid substances.
  • TRA workers supports the exposure assessment of solid as such or in solid mixture. The exposure estimates are calculated based on the level of dustiness of the product used. Chesar 3.3 supports the exposure assessment of solids in liquid mixtures. For more information refer to manual “ECTOC version 3: Background and rational for improvements”, in particular Table 3 in TR 1.1.4)
How can I assess a solid substance processed at high temperatures?
When the operating temperature is below the melting point for a solid substance, the substance is considered as solid and the provision of TRA workers 3.0 for solid substances are applied (exposure estimates are calculated based on the level of dustiness of the substance). If the operating temperature is above the melting point, the substance is considered in Chesar as liquid, and TRA workers 3.0 for liquid is applied for exposure estimation, which means that the exposure is a function of the vapour pressure.
Is Chesar 3 capable of performing a cumulative worker/consumer assessment?
No. However, you can report the relevant information in Chesar Box 4 in the “Workers combined risks” field in section 10.1.
How does Chesar facilitate the assessment of substances with many constituents such as UVCBs or substances transforming in the environment or upon use?

Chesar 3 has the possibility ­­to assess “complex substances” such as substances with many constituents (including UVCBs) and substances which transform by the use of Assessment Entity Groups (AEG). The prerequisite is to create assessment entities in section 0.4 of IUCLID 6 (you can find more information in IUCLID manual for registration https://echa.europa.eu/documents/10162/22308542/manual_regis_and_ppord_en.pdf).

These will be imported with your substance properties data in Chesar through the web service. The assessment entities can then be used to create AEG which can be used for the assessment. For more information on how to define the AEG refer to Chesar help text in Chesar Box 1. You may also get more information in part D of the Guidance on Chemical safety assessment https://echa.europa.eu/documents/10162/13632/information_requirements_part_d_en.pdf.

Does Chesar 3 provide exposure estimates for contributing scenarios for “maintenance and cleaning” activities?

ECETOC TRA workers 3.0 does not provide exposure estimations for PROC 28. However, in some cases, the exposure potential during maintenance is similar to the exposure potential occurring during other types of activities. In such cases, if a suitable justification is reported, the exposure estimation can be based on a different PROC (e.g. PROC 8a when there is a potential for a direct contact with the substance) and in Chesar, the following procedure can be applied:

  1. In Box 2, create a worker contributing activity and assign e.g. PROC 8a.
  2. Carry out your exposure assessment in Box 3 by adding a TRA workers 3.0 exposure dataset.
  3. Specify your set of conditions of use.
  4. Add an external tool exposure dataset. In the “external tool exposure dataset” view, link the conditions of use already specified for the TRA assessment, copy the exposure estimates obtained with TRA and justify your selection of PROC (e.g. PROC 8a) for the exposure estimates in the “explanation on exposure estimations” field.
  5. When the information from the TRA assessment has been copied into the external tool dataset, the TRA workers 3.0 exposure dataset can be deleted.
  6. Go back to the contributing activity level in Box 2 and overwrite the PROC used for the assessment (e.g. PROC 8a) with PROC 28.
How can I get exposure estimates using the ECETOC TRA for activities under closed conditions at end-use of chemicals?

Some contributing activities at end-use of chemicals may take place in closed conditions similar to those in the chemical production and refineries, and therefore TRA exposure estimates for PROC 1-3 could be applicable. It should be noted nevertheless that in sectors other than chemical production and refineries a measured data set is needed to validate the use of a “PROCs 1-3 based assessment” (see Guidance R14). With this basis, a similar technique as described for the aforementioned question can be applied.

  1. Create a worker contributing activity to which the PROC describing closed systems (e.g. PROC 2) is assigned.
  2. Carry out your exposure assessment in Box 3 by adding a TRA workers 3.0 exposure dataset.
  3. Specify your set of conditions of use.
  4. Add an external tool exposure dataset.
  5. In the “external tool exposure dataset” view, link the conditions of use already specified for the TRA assessment, copy the exposure estimates obtained with TRA and justify your selection of PROC 2 for the exposure estimates in the “explanation on exposure estimations” field.
  6. When the information from the TRA assessment has been copied into the external tool dataset, the TRA workers 3.0 exposure dataset can be deleted.
  7. Go back to the contributing activity level in Box 2 and overwrite the PROC used for the estimation (e.g. PROC 2) with the PROC characterising the nature of the activity carried out under closed conditions.­
  8. Do not forget to add the measured dataset (as supportive exposure assessment) which justifies the claim of closed system for the activity
Does Chesar support the waste life stage?
In Chesar some key information related to the waste stage can be documented for each contributing activity for the environment, such as the fraction of substance released to waste stage and whether particular considerations have to be taken into account for the waste treatment operations. There is no particular functionalities for assessing the waste life stage of a substance in Chesar. Nevertheless, it is possible to assess the treatment of waste as a “use” at industrial site.

Categories Display