Power plant operations generate different types of industrial waste. In FY07/08, 105,263 tonnes of waste were sent for disposal, including scrap metal, boiler slag, waste oil and general waste. All ash and sludge produced from the plant operations are collected and treated before it is sent to the landfill. Moreover, all toxic wastes are treated in accordance with local regulations before disposal. As far as possible, waste materials are recycled as by-products that can be used by other industries. For example, sulphur dioxide is recycled to produce gypsum, which is sold to the construction industry. In 2007, 95,056 tonnes of gypsum were shipped overseas under the terms of the Basel Convention. The percentage of transported waste shipped internationally was 94.2% and 90.3% in FY06/07 and FY07/08 respectively.

Diagram 7.9: High percentage of recyclable waste

Volume of significant spills
In FY06/07 to FY07/08, PowerSeraya had no recorded oil spills. A system involving the regular recording of oil spills started in 2007. Previously, oil spills were only recorded when an incident occurs.
Nevertheless, we have an oil-spill response plan, and every year we participate in the annual oil spill exercise organised by Oil Spill Response. This ensures that we are equipped to contain and minimise the environmental damage caused by an oil spill.