IEEE 979-2012 pdf free.IEEE Guide for Substation Fire Protection.
control building: A building or stmcturc in a substation that contains protection, control, system control and data acquisition (SCADA). and telecommunications equipment, electrical panels, battery banks, and other auxiliary equipment. In this guide. this term may be used interchangeably with other commonly used tcrms such as control housc or control enclosure.
fire protection: The study and application of measures to prevent, detect. extinguish. control, or deal with fires, and the subsequent impact on people. assets, business activities, or the environment.
hazard: Any source of potential damage, harm, or adverse health effects on something or someone under certain conditions at work.
risk: The chance or probability that a person will be harmed or experience an adverse health effect if exposed to a hazard. It may also apply to situations with property or equipment loss.
switchard: The outdoor portion of a substation with only a single voltage level. In multivoltage substations, the switchyards are typically connected by one or more power transformers.
3.2 Fire-suppression system terms
clean agent gas fire estinguishing systems: A fire protection system that uses clean gaseous agents that arc I) electrically nonconducting. (2) volatile or gaseous, and (3) do not leave a residue on evaporation. The system discharges the agent for the purpose of achieving a specified minimum agent concentration throughout a hazard volume. A clean agent complies with restrictions on the production of certain Halon fire extinguishing agents under the Montreal Protocol signed September 16. I 97.
deluge sprinkler system: A sprinkler system employing open sprinklers that are attached to a piping system that is connected to a water supply through a valve that is opened by the operation of a detection system installed in the same areas as the sprinklers. When this valve opens, water flows into the piping system and discharges from all sprinklers attached thereto.
double interlock preaction sprinkler system: A Preaction system that admits water to sprinkler piping on operation of both detection devices and automatic sprinklers and only discharges from opened sprinklers. This type of arrangement provides the most redundancy to reduce the probability of accidental sprinkler discharge by requiring both detection devices and sprinklers to activate independently prior to water being admitted to the piping network. This type of arrangement also allows for pressure monitoring to detect leaks in the piping network or open sprinklers prior to water being admitted to the system.
dry pipe sprinkler system: A system employing automatic sprinklers that are attached to a piping system containing air or nitrogen under pressure, the release of which (as from the opening of a sprinkler) permits the water pressure to open a valve known as a dry pipe valve, and the water then flows into the piping system and out the opened sprinklers.
foani-ater system: A sprinkler system that generates a foam-water solution and discharges it onto the hazard to be protected utilizing air-aspirating foam-water sprinklers or nozzles or non—air-aspirating standard sprinklers.IEEE 979 pdf download.