Kick-off OLVs

Kick-off values for chemicals without an Occupational Limit (OLV)

The december volume of the Dutch Journal of Applied Occupational Sciences (Tijdschrift voor toegepaste Arbowetenschappen) (TtA vol 18 2005, p67-75) contains the article : "Kick-off values for chemicals without a Occupational Limit (OLV)", written by the DOHSBase co-workers Theo Scheffers and Geert Wieling. The original article is, after consultation with the editors of the journal, compressed and refers to this website for the information not included in the article.

On this page you can find :
  • The english summary
  • 1. The method to establish kick-off values from R-phrases and physical state
  • 2. The additional information on the TtA article
  • 3. The first list with kick-off OLVs (2005-02)


    • 1. The method to establish kick-off values from R-phrases and physical state

    The kick-off Occupational Limit Value depens on the human health R-phrases and the physical state [see TtA vol 18 (2005) p75 table 8]. Establish the highest hazard class using the agents' R-phrases using the first row of table 8. Reed in the underlying cells of the hazard class collumn the Kick-off OLV takin into account if the agent exceeds the OLV as an aerosolen or as a gas/vapor.

    Table 8  Kick-off OLV8 hours based on the TRGS440 hazard scheme.

     

    Hazardclass

    1

    2

    3

    4

    R-phrases

    36,37,38

    65,66,67*

    20,21,22

    34

    41

    62,63,64

    23,24,25

    29,31

    33, 35

    40 (Carc. Cat. 3)

    42,43

    60,61

    68 (Mut. Cat. 3)

    26,27,28

    32

    45

    46

    49

    Kick-off Occupational Limit Values per hazard class and physical state

    Gasses and vapors (ppm)

    4

    0,2

    0,01

    0,001

    Aerosols (mg/m3)

    0,24

    0,06

    0,02

    0,01

    *: R65, 66 and 67 are only linked to gasses and vapors (OLVs in ppm)

     

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    2. The additional information on the TtA article

    Table 1 in the article shows the distribution and the ordening of the R-phrases numbers over the classess of five hazard class schemes. Click R-phrase table for the description of the R-phrase numbers.
    The box plots in table 3 in the TtA article are difficult to read. Click box plots to open table 3 as a Word document.
    Using the links below you you will find of all the evaluated hazard schemes:
        the lognormal probability plots
        the scatter plots with regression

    Click on the hazard class:
    TRGS
    COSHH
    ILO
    SOMS
    ECETOC

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    3. The kick-off values (2005-02)

    In order to establish a kick-off value for an agent without a TWA8 hrs Occupational Limit Value (OLV) collect the following information:
            - the human health R-phrases,
            - Molecular weigth
            - The physical state or constants to establish the state at room temperature (vapor pressure, boiling point, melting point).

    There are some 900 chemical agents for which the DOHSBase program uses the kick-off value in its Compare modus. Contact us by clicking     kick-off if you want more information.

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