INTRODUCTION MATERIALITY AND STAKEHOLDER ENGAGEMENT OUR CITY OUR OUR PEOPLE ENVIRONMENT GLOSSARY AT A GLANCE GLOSSARY I TORONTO HYDRO 89 ISO 14001 International standard that specifies requirements for an environmental management system to enable an organization to develop and implement policy and objectives which take into account legal requirements and other requirements to which the organization subscribes, and information about significant environmental aspects. Source: International Organization for Standardization ISO 26000 International guidance on social responsibility that provides guidance on how businesses and organizations can operate in a socially responsible way. ISO 26000:2010 is not a management system standard. It is not intended or appropriate for certification purposes or regulatory or contractual use. Source: International Organization for Standardization Kilowatt (kW) A common measure of electrical power equal to 1,000 watts. Kilowatt-Hour (kWh) A standard unit for measuring electrical energy produced or consumed over time. One kWh is the amount of electricity consumed by ten — 100 watt light bulbs burning for one hour. MVA Megavoltamperes (MVA): Millions of voltamperes, which are a measure of apparent power. Source: U.S. Energy Information Administration Megawatt (MW) A common measure of electrical power equal to one million watts. OEB Refers to the Ontario Energy Board. OHSAS 18001 An internationally recognized standard for establishing occupational health and safety management systems. Source: OHSAS 18001 Health and Safety Standard Peak Load The maximum demand for power, measured in megawatts, that occurs within a stated period of time. Toronto Hydro’s peak system load (or peak demand) normally occurs in the summer because of power demands from air conditioning. Sulphur Hexafluoride (SF6) A synthetic gas that is colourless, odourless, non-toxic and non-flammable. SF6 is primarily used in the electricity industry as insulating gas for high voltage equipment. Source: Environment Canada System Average Interruption Duration Index (SAIDI) A measure (in hours) of the annual system average interruption duration for customers served, not including Major Event Days (MED). SAIDI represents the quotient obtained by dividing the total customer hours of interruptions longer than one minute by the number of customers served. System Average Interruption Frequency Index (SAIFI) A measure of the frequency of service interruptions for customers served, not including MED Days. SAIFI represents the quotient obtained by dividing the total number of customer interruptions longer than one minute by the number of customers served.
Toronto Hydro CR Report 2016
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