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Health & Safety including Dust Control


External extraction for bulk silos with independent vent filters The site also has individual silos – each for storing of different raw materials. The existing silo vents had common ductwork and were jointly connected to a floor mounted dust extractor. This had associated problems such as:


• The whole system had to be shut down for maintenance • Potential for cross contamination between products • The waste had to be emptied and disposed of regularly, adding to cost and impacting environmentally


The new Dustcheck system has individual spot filters for each silo. Although more costly in terms of initial outlay longer term benefits include:


• Uncontaminated material can be reused, improving product yield


• As product is being reused the waste is eliminated so the cost of disposal disappears and maintenance is also significantly reduced.


Independent vent filter for internal bulk storage silo


The third system installed is for an internal silo, which was previously connected to the outdoor common system.


It is now separate from the outdoor silos with its own floor-mounted system with benefits such as:


• Uncontaminated material can be reused – improving product yield


• As product is being reused the waste is eliminated so the cost of disposal and maintenance is also reduced


Norcros’ Environmental Policy states that over 90% of its raw materials by volume are sourced within a 30 mile radius of the manufacturing plant and over 95% of the


Quality Controlled quarantined product is recycled in the manufacturing process. The new system fully ensures those targets are met.


Dustcheck also offered a performance guarantee that no more than 25% of the acceptable level of dust would be left in the atmosphere once the Dustcheck system was operational. Performance checks confirmed dust levels reduced to less than 20% of the WEL and respirable quartz to 10%.


The future:


Dustcheck's approach is to look at the long-term usage for any system installed. Future proofing is the norm with all Dustcheck's designs and Norcros' future requirements have been accounted for including expansion in mixing and packaging. For more information contact Dustcheck on tel: 01782 599454 or visit: www.dustcheck.co.uk


Norcros' centralised dust extraction system installed by Dustcheck


www.solidsandbulk.co.uk October 2011 • Solids & Bulk Handling 43


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