Reduction in Workplace Exposure Standard for Respirable Crystalline Silica

From July 1, 2002 the new Workplace Exposure Standard (WES) for respirable crystalline silica takes effect in Queensland. The new WES is an 8-hour time- weighted average airborne concentration of 0.05mg/m3, which is half the previous standard.

The new Workplace Exposure Standard was implemented by Safe Work Australia in late 2019 and is being adopted at a timeframe appropriate to each state.

While workplace focus has always been to reduce hazards to as low as practicable, the new Workplace Exposure Standard will require workplaces to use a combination of control approaches more than ever, to ensure airborne concentrations of airborne particulates are below 0.05mg/m3. Looking forward, a new shift in thinking will be required by all employers and employees to ensure the new standard can be achieved to protect the health of the workforce.

Previously, many workplaces had used just one level of the ‘Hierarchy of Control’ to reduce airborne respirable silica concentrations, for example the implementation of personal protective equipment (respirators) or the introduction of procedures using wet cutting or extraction devices on power tools. Many of these dust control systems have been ‘home made’ or using incompatible systems together.

Employers will need to rethink the way exposure to respirable crystalline silica is controlled, as the requirement of all levels of the hierarchy of control to achieve this standard is certain. In parallel, employees must be given sufficient understanding of the health effects of respirable crystalline silica and the means to prevent personal exposure. Employees will need to work together and with their employer by following directions and reporting incidents immediately.

The most important thing to do as an employer is begin the process of assessing and reducing exposure to respirable crystalline silica. This is achieved by ensuring that all potential exposures are identified and well understood, and that procedures and systems of work are sufficient to reduce exposure to as low as practicable.

An array of professionals are available to assist in all facets of this process.

Industry equipment specialists with knowledge in dust control equipment systems can ensure that existing equipment is compatible, or introduce and demonstrate new, effective and compatible methods of dust extraction and capture.

At Resile, our Occupational Hygienists can assist with the identification, evaluation, and control of respirable crystalline silica in your workplace. Our Occupational Physicians and Occupational Health Nurses can assist with the requirements of health monitoring for workers exposed to respirable crystalline silica and return to work for affected workers.

Against the backdrop of COVID-19, with shortages of personal protective equipment and confusion about genuine items, the requirement to control dust at the source and obtain correct information from health and industry professionals has never been more important.

To get in touch with Melanie for assistance in managing RCS in your workplace, please email the Workplace Occupational Risk Consulting team at [email protected]

Author: Melanie Cox – Resile COH ®