5 . Maintaining and reviewing control measures
WHS Regulation clause 37 Maintenance of control measures
All control measures must be maintained so they remain effective . This includes ensuring control measures are fit for purpose , suitable for the nature and duration of the work , and installed , set up and used correctly .
For example , a PCBU should conduct daily start up checks to ensure that :
− machine and water mist guards and LEV are fitted correctly and are working effectively − LEV filters are clean and replaced according to the manufacturer ’ s instructions − there is an adequate water supply for water suppression , and − all RPE is in good , working condition and fit checked .
A PCBU should routinely monitor the workplace for signs of visible dust on work surfaces or clothing as that may be an indication that some controls are not working effectively .
Plant inspection and maintenance
Silica dust is abrasive and can damage and wear plant , including engineering controls .
Plant must be routinely inspected , maintained and repaired according to the manufacturer ’ s specifications or , in the absence of such specifications , in accordance with a competent person ’ s recommendations .
Inspection of plant should identify any :
− wear and tear , corrosion or damaged parts − air leaks in pneumatic tools − kinks , holes or leaks in water suppression , exhaust ventilation or dust extraction equipment − filters in need of replacing , and − damage to guards and flaps that contain water spray .
Hand-held powered tools should be regularly inspected , repaired or replaced when necessary , and any damaged or worn parts ( such as grinding wheels ) identified should be replaced .
A system of routine daily checks on plant and equipment designed to control dust should be implemented to ensure they are working effectively . Failures or problems identified should be rectified and workers should be encouraged to report concerns to the PCBU .
Managing the risks of respirable crystalline silica from engineered stone in the workplace - Code of Practice 44 of 57