e of more than one day showed a year-on-year decrease of approximately 10%. In the year under review, 9.7 occupational accidents per 1,000 employees were recorded (previous year*: 10.8). In 2015, injuries caused absences of an average of 22 days (previous year: 17). This figure was strongly influenced by longer absences due to injuries to the locomotor system caused by accidents while walking. Sika will continue to improve safety constantly in 2016:
Sika consumed 1,833 terajoules in 2015 (previous year: 1,671 terajoules). Approximately 53% of Sika’s energy requirements were met by electrical power from the local grid. The remaining demand was mainly covered by natural gas and liquid fuels. Energy consumption per ton came to 455 megajoules (revised figure for the previous year*: 438 megajoules). This slight increase of 4% is primarily due to the change in product mix and strong growth in energy-intensive product technologies. With an increase in energy efficiency of approximately 15% during the two last reporting years in comparison to 2013 Sika is on track.
CO2 emissions from energy consumed directly by all Sika operating companies and units, both industrial and nonindustrial sites, and by its own vehicles are calculated based on the reported fuel quantities. In 2015, CO2 emissions from the use of primary energy sources ran to around 53,000 tons (previous year*: 47,000 tons). A number of factories in China still rely on locally sourced coal as a fuel. This has a low gross calorific value and entails higher CO2 emissions than natural gas. Emissions were reduced at two plants by adjusting the product mix, partially replacing a coal-intensive process with a coal-free process.
CO2 emissions from indirect energy consumption – i.e. emissions not due to Sika’s own primary energy usage, including leased vehicles and business travel, is derived from the reported energy quantities. CO2 emissions caused by purchased electricity are calculated using current emission factors from the Greenhouse Gas protocol (GHG), applying average values for electric power production in each particular country. In 2015, CO2 emissions caused by electricity consumption were calculated at 107,000 tons (previous year: 102,000 tons), i.e. more than twice as high as direct CO2 emissions. Leased vehicles and business travel caused additional CO2 emissions of 21,000 and 13,800 tons, respectively (previous year: 20,500 and 14,000 tons).
In 2015, Sika used approximately 1.7 million cubic meters of water (previous year1: 2 million cubic meters). With water consumption per ton sold down by around 25% to 0.41 cubic meters (revised figure for the previous year: 0.55), Sika significantly exceeded its target. Sika invested in various water efficiency projects at its plants worldwide during the year under review, for example in the installation of a new cooling system at a major Sika plant: Cooling water was replaced by a closed cooling water circuit. This led to a nearly 80% reduction in Sika’s water consumption in the United States. Sika Peru undertook a quite different project of an educational nature by installing a hydroculture greenhouse on its premises. The projects aims to help employees develop a better understanding of water as a precious resource.
Recording a higher production volume, the company caused approximately 70,000 tons of waste (previous year*: 62,000 tons). This corresponds to 17.3 kilograms of waste per ton sold (revised figure for the previous year: 16.5 kilograms per ton sold), or an increase of 5%. After reporting improvements in previous years, waster generation resulting from the start-up of new production sites impacted on efficiency in 2015. However, since 2013 the amount of waste has been reduced overall by -3.3%.Material efficiency will be a priority in 2016.
A large part of the waste – particularly from polymer and adhesive production – is recycled by external companies. Extensive measures such as the efficient and economical use of raw materials, process optimizations, improved waste sorting and recycling of packaging materials have contributed to global waste efficiency.
* The values from the 2014 Annual Report have been retroactively adjusted in line with renewed availability and factored into the calculation of the key figures.