(1) In every case where an electrolytic chromium process is carried on, vapour spray or mist shall be prevented from escaping from the bath into the air above the bath or in any other part of the workroom by mechanical exhaust ventilation or other effective means.
(2) In every case the amount of chromic acid or other compounds of chrome expressed as chromic acid detectable in any part of a horizontal plane 0.3 metres above the upper edge of the bath and over the bath shall not exceed a concentration of 0.1 milligrams per cubic metre of air.
(3) Every occupier of an electroplating workshop shall provide and maintain in working condition an approved means of detecting and determining the concentration of chromic acid or other compounds of chrome, expressed as chromic acid, in air.
(4) Where an electrolytic chromium process is carried on in any bath, during all or any part of a week, the occupier shall, during that week, use the approved means to ascertain that the concentration of chromic acid or other compounds of chrome, expressed as chromic acid, in air, is not greater than the concentration specified in subclause (2) of this regulation.
(5) During the taking of such a test, the bath shall be operated within normal limits of temperature, potential, and current, and shall contain a usual load of work. When more than one load is processed on the day of test, the test shall be taken during the processing of the second or subsequent loads.
(6) Immediately after every test, the occupier shall enter in a register kept for this purpose, the following details:
(7) If, on any test taken, the concentration of chromic acid or other compounds of chrome expressed as chromic acid is found to exceed the concentration specified in subclause (2) of this regulation, the bath shall not be used for an electrolytic chromium process, until such measures have been taken as are necessary to render the concentration below that specified:
Provided that nothing in this subclause shall apply to the use of the bath in order to take further tests to assess the efficiency of the measures taken.
(8) The register described in subclause (6) of this regulation shall be available during normal working hours for inspection by a Medical Officer, or by an Inspector of Factories, or by an Inspector of Health, or by an officer of the Department of Health holding written authority from the Director-General of Health under section 78 of the Factories Act 1946.
(9) Any of the officers specified in subclause (8) above, may, at any time during normal working hours, make tests to determine the concentration of chromic acid or compounds of chrome, expressed as chromic acid, in air on any premises where an electrolytic chromium process is carried on, and shall enter the results of these tests in the register kept by the occupier.
Regulation 8 was substituted, as from 1 September 1966, by regulation 3 Electroplating Regulations 1950, Amendment No 2 (SR 1966/24), and regulation 8(2) was amended, as from 18 April 1975, by regulation 2 Electroplating Regulations 1950, Amendment No 3 (SR 1975/75), by substituting the words
“0.3 metres” for the expression