3. Fire resistance of cables
Fire resistance of cables mainly consists in assessing the integrity of the circuit, i.e. the maintenance of electrical or optical power, control or command functions during a fire.
3.1 Old French system
Standard NF C32-070 lays down the principles for classifying conductors and cables in terms of fire behavior. The CR1 classification is awarded to cables capable of maintaining their functions for a certain period of time when exposed to fire. To obtain this classification, cables in the CR1-C1 category must demonstrate limited flame propagation, continue to operate under simulated fire conditions in a tube furnace, with temperatures following the standardized temperature-time curve, and undergo mechanical shocks while being maintained under electrical voltage...
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Fire resistance of cables
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Bibliography
- (1) - NUREG/CR-6384 - Literature Review of Environmental Qualification of Safety-Related Electric Cables - (NUREG/CR-6384) https://www.nrc.gov/reading-rm/doc-collections/nuregs/contract/cr6384/index.html ...
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