8.1 SPIN Exposure Toolbox

Posted by Berit-Aya Jensen on 10/09/2015

8.1  SPIN Exposure Toolbox

The toolbox contains indexes useful for an exposure indication on industrial chemicals in the SPIN database. The indexes are automatic generated and compiled from mostly confidential use information stored in the national product registers in the Nordic countries.

SPIN contains use information from several years. The index tools will, however, focus on the current uses and is therefore only applied for the latest updated information. Older data that was published before the index tools was introduced (from 2008) is not fully covered with index information.

Three index tools are developed.

–          Use Index: A general emission/exposure estimation of different human and environmental target groups.

–          Range of Use index: Indicates the broadness of the use of a substance in a Nordic country.

–          Article Index: Gives indications if a substance may end up as a part of an article.

The tools are only recommended for initial screening purposes. For a thorough analysis more data are needed. A first step is then to explore the non-confidential use data available on SPIN. Also specific use data that have been excluded from the SPIN database may be accessible. That normally demands a manual aggregation of data that only can be done at the national Product Registers.

All three index tools are based on the two main use descriptors:
–  Use Category, UC.
–  Industrial Category, IC                   (named “Industrial use” in SPIN).
They refer to the downstream use of the product. More than one UC or IC category can be used to describe the use of a product.

The specific quantities registered for different uses could be used to balance the contributions for different uses of the same substance. However, since the quantity data in many cases are confidential that should leads to considerable exclusion of unique data from the data set.

 

 

8.1.1  Use Index (UI)

The Use index gives an indication of the potential “worst case” exposure to different target groups in the society and the environment. The Use Index is based on the use descriptors “Use Category” and “Industrial Category” (see above). Since there are no chemical/physical properties integrated the exposure estimate is limited to the environment near the release source. The index is presented per Nordic country.

Worst case assumption: When a substance is used in several uses with different exposure potential, the index for the most critical usages per target group are selected.

(more information on the algorithm).

The Use Index has been divided in the following categories:

Use Index categories                                                                           Use Index              

One or several product uses indicate a very probable exposure                   3

One or several product uses indicate a probable exposure                           2

One or several product uses indicate a potential exposure                           1

The registered product use do not indicate direct exposure1                         

1) Note that registered use descriptors do not include all potential uses of the chemical and the possibility for exposure can therefore not be excluded. Further information can be found by pushing the ‘Help’ tab.

 

8.1.2  Range of Use Index (RoU)

The index indicates the broadness of the use of a substance in a Nordic country. The “broadness” is here simplified as the number of different use patterns for a single substance that can be extracted from the product use data. Each registered product is categorized with use descriptors. The “Range of Use index” is based on the use descriptors “Use Category” and “Industry Category” (see above). The measure parameter for the index is the number of unique combination of these two categories. It is presented per substance and country for the latest registration year. The Range of Use index has been divided in the following categories:

Range of Use (RoU) Index categories      Number of applications          RoU Index
Very wide range of applications                                > 100                                 5
Wide range of applications                                      33 – 100                              4
Intermediate range of applications                           11 – 32                               3
Narrow range of applications                                     4 – 10                                2
Very narrow range of applications                              1 – 3                                 1

 

8.1.3  Article Index (AI)

The Article Index indicates if a substance is used in production of articles/goods. Each registered product is categorized with use descriptors. The Article Index is based on the use descriptors Use Category” and “Industrial Category” (see above)..

Worst case assumption: When a substance is used in several uses with different exposure potential, the index for the most critical usages per target group are selected.

(more information on the algorithm).

The Article index has been divided in the following categories:

Article Index categories                                                   Article Index
One or several uses indicate a:
very probable use in article productions                                3
probable use in article productions                                         2
potential use in article productions                                         1