THE SCHEDULEAMENDMENTS TO THE PRINCIPAL REGULATIONS

1

In regulation 2(1) for the definitions of “action level” and “control limit” substitute the following definitions—

  • “action level” means one of the following cumulative exposures to asbestos over a continuous 12-week period when measured or calculated by a method approved by the Health and Safety Commission, namely—

    1. a

      where the exposure is solely to chrysotile, 96 fibre-hours per millilitre of air; or

    2. b

      where exposure is to any other form of asbestos either alone or in mixtures including mixtures of chrysotile with any other form of asbestos, 48 fibre-hours per millilitre of air; or

    3. c

      where both types of exposure occur separately during the 12-week period concerned, a proportionate number of fibre-hours per millilitre of air;

  • “control limit” means one of the following concentrations of asbestos in the atmosphere when measured or calculated by a method approved by the Health and Safety Commission, namely—

    1. a

      for chrysotile—

      1. i

        0.5 fibres per millilitre of air averaged over any continuous period of 4 hours,

      2. ii

        1.5 fibres per millilitre of air averaged over any continuous period of 10 minutes;’

    2. b

      for any other form of asbestos either alone or in mixtures including mixtures of chrysotile with any other form of asbestos—

      1. i

        0.2 fibres per millilitre of air averaged over any continuous period of 4 hours,

      2. ii

        0.6 fibres per millilitre of air averaged over any continuous period of 10 minutes;