Accident	An accident that results in incapacity of more than one day.
Carbon dioxide equivalent (CO2e)	CO2e is a unit for comparing the radiative forcing of a greenhouse gas to carbon dioxide.
Coalbed methane (CBM)	CBM is simply methane found in coal seams. It is generated either from a biological process as a result of microbial action or from a thermal process as a result of increasing heat with the depth of the coal.
Direct greenhouse gas emissions	GHG emissions from greenhouse gas sources owned or controlled by the organisation.
Energy indirect greenhouse gas emissions	GHG emissions from the generation of imported electricity, heat or steam consumed by the organisation.
GB/T28001	GB/T28001 is published by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China for health and safety management systems. Similar to OHSAS 18001, it is intended to help organisations control occupational health and safety risks.
Global Reporting Initiatives (GRI) reporting framework	The GRI reporting framework is intended to provide a generally accepted framework for reporting on an organisation’s economic, environmental, and social performance. The Framework consists of the sustainability reporting guidelines, the indicator protocols, technical protocols and sector supplements.
Greenhouse gas (GHG)	GHG is a gaseous constituent of the atmosphere, both natural and anthropogenic, that absorbs and emits radiation at specific wavelengths within the spectrum of infrared radiation emitted by the Earth’s surface, the atmosphere and clouds. GHGs include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorcarbons (PFCs) and sulphur hexafluoride (SF6).
ISO 9001	ISO 9001 is published by the International Organisation for Standardisation. It specifies the requirements for quality management systems, providing assurance with regard to the ability to satisfy quality requirements and enhance customer satisfaction in supplier-customer relationships.
ISO 14001	ISO 14001 is published by the International Organisation for Standardisation. It stipulates the requirements for environmental management systems, to enable an organisation to develop and implement a policy and objectives which take into account legal requirements and other requirements to which the organisation subscribes, and information about significant environmental aspects.
Naphtha	Naphtha normally refers to a number of different flammable liquid mixtures of hydrocarbons, i.e. a distillation product from petroleum or coal tar boiling in a certain range and containing certain hydrocarbons. It is a broad term encompassing any volatile, flammable liquid hydrocarbon mixture.
OHSAS 18001	OHSAS 18001 is an Occupation Health and Safety Assessment Series for health and safety management systems. It helps organisations control their occupational health and safety risks.
PAS55	PAS 55 is the British Standards Institution's "Publicly Available Specification" for the optimal management of physical assets and infrastructure. It is applicable to organisations where physical assets are a key or critical factor in achieving effective service delivery.
Reportable accident	An accident that results in incapacity of more than three days.
Social enterprise	A social enterprise is a business whose ultimate mission is to achieve a social objective. Revenues generated from the business are used to support the enterprise’s operations and social mission without the need to depend on subsidies or donations.
Sustainability report	Sustainability reporting is the practice of measuring, disclosing, and being accountable for organisational performance while working towards sustainable development. Sustainability reports aim to provide a balanced and reasonable representation of the sustainability performance of the reporting organisation, including both positive and negative contributions.
The Clean Air Charter	The Clean Air Charter was launched by the Hong Kong General Chamber of Commerce and the Hong Kong Business Coalition on the Environment in 2005, seeking the business community’s involvement, on a wholly voluntary and best effort basis, to foster the improvement of air quality in Hong Kong.
The Hong Kong Green Purchasing Charter	The Hong Kong Green Purchasing Charter was launched by the Green Council in October 2007 to promote green purchasing in the community.