SUSTAINABILITY REPORT Cont’d Our Initiatives In FY2022, we have undertaken several air emissions initiatives which were registered under the SOIP. Project Description Digital Panel Flowrate Meter (Recycle Process) Phase 2 Digital panel flowrate meters are installed as part of the fume treatment system to control the flow rate of recycling process. This prevents viscous and fine-quality alumina to be added to the potline. Deduster Improvement of Blower and Ducting This project aimed to improve air quality and reduce air pollution surrounding the cast house. Continuous and preventive maintenance measures include changing the bag filter of the deduster to maintain the suction efficiency as well as adding a heavy-duty motor blower to support the suction process. With these improvements in place, fume released to the external surroundings of the cast house is minimised. Inlet Air Filter House: Dust Shield Cover The installation of shield around the cover of the inlet air filter house helped to reduce the ingress of dust and dirt into the air compressor. As a result, it reduced maintenance time on the machine, improved operational reliability of the machine, and enhanced the impeller service life which consequently reduces the cost to purchase new parts has been observed. Air Dust Containment & Reduction Project The crushing process to recover anode remnants has generated dust particles. This project aims to contain dust particles from being dispersed to the surroundings by working in an enclosed area and through optimising the dust collector suction, we can maintain a conducive working environment. Our Performance With our robust management system in place, Press Metal has not recorded any incidents of non-compliance with regard to regulatory air emissions limits. In terms of air emissions, there has been an increasing trend in air emissions recorded in mass volume for the past three (3) years. This is attributed to the full commencement of the Phase 3 facility at PMBtu. However, our air emissions are well kept within the limits set by DOE. FY2020 FY2021 FY2022 Total Air Emissions (Tonnes) FY2020 FY2021 FY2022 Total Particulate Matter 287.6 204.6 313.4 Hydrogen Fluoride 69.5 58.7 93.8 Sulphur Oxides 5,565.3 6,010.2 7,437.4 Nitrogen Oxides 6.9 5.3 5.6 Note: Aggregated data from our smelting facilities at PMBtu and PMS. ANNUAL REPORT 2022 128
RkJQdWJsaXNoZXIy NDgzMzc=