Enhancing Dust Hazard Assessment through Hazardous Area Classification: A Model Implementation in APAC Region

Background: Recent incidents in industries handling combustible dust have highlighted the critical importance of understanding dust properties and the frequency of combustible dust atmospheres. Hazardous Area Classification (HAC) is pivotal in identifying areas where combustible dust atmospheres exist and also guides in removal of ignition sources where the hazardous area exist.

Abstract: This presentation focuses on a model implemented by Cargill APAC within their Animal Nutrition and Health (ANH) business to improve Dust Hazard Assessment (DHA) through Hazardous Area Classification. The model, based on IEC and NFPA principles, provides a robust framework applicable to facilities handling combustible dust. Utilizing a checklist-style worksheet, Cargill conducts in-house Dust Hazard Assessments (DHA), ranking equipment based on consequences and frequency. Identified gaps in Hazardous Area Classification or non-availability/ inadequate maintenance of rated fittings are major concerns which increase the overall estimated risk of dust explosions in our DHA studies. To address these, Cargill developed a robust HAC procedure with a process safety consulting firm who also trained initial batch of facilitators. Further training sessions by certified facilitators empowered teams across 75+ ANH sites in APAC, facilitating rapid, cost-effective implementation while raising awareness about HAC's importance.

Conclusion: Identifying flammable atmospheres and removing ignition sources are critical in industries handling combustible dust. Hazardous Area Classification is instrumental in achieving this. This presentation aims to share Cargill's model to promote safer working environments across the APAC region and beyond.