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Worksafe proposed changes to the Workplace Exposure Standards (WES) of 18 substances and the Biological Exposure Indices (BEI) of 4 substances

NZNO welcomes your feedback on proposed changes to the Workplace Exposure Standards (WES) of 18 substances and the Biological Exposure Indices (BEI) of 4 substances.  

WES and BEI are important tools for monitoring worker’s biological and airborne exposure. WES are values that refer to the airborne concentration of substances. BEI are guidance values for assessing biological monitoring results which measures the concentration of a substance – or its breakdown products - in blood or urine or even exhaled air. The monitoring result is compared to the BEI established for the specific substance.

18 substances of WES:

  1. Acetaldehyde
  2. Allyl glycidyl ether
  3. Aniline and homologues
  4. Arsenic
  5. Benzene
  6. Cadmium and cadmium compounds
  7. Chromium compounds
  8. Copper
  9. Diethyl sulphate
  10. 4,6-Dinotro-o-cresol
  11. 1,4 Dioxane
  12. Formaldehyde
  13. Hydroquinone
  14. Phenol
  15. Synthetic mineral fibres
  16. Vanadium
  17. Vinyl Acetate
  18. Zinc Oxide

4 substances of BEI:

  1. Arsenic
  2. Benzene
  3. Cadmium and cadmium compounds
  4. Phenol

Please find further consultation information here.

Further information on WES, including the meaning of WES-TWA and WES-STEL, and BEI is provided in the Glossary sections of the relevant proposal documents.

Please send feedback to PolicyAnalysts@nzno.org.nz by 14 August 2020.

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