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5.4.3.4.(1)
OS1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Control of ignition sources [shutting off of power supply] from electrical equipment in premises undergoing fumigation or thermal insecticidal fogging.
This applies to fumigation or thermal insecticidal fogging [application of gaseous or volatile fumigants for the purpose of controlling insects] of buildings, including the fumigation of equipment or commodities within structures, tanks or bins or under tarpaulins.
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Intent
Intent 1: 
To limit the probability that electrical discharge will ignite fumigants, which could lead to a fire or explosion, which could lead to harm to persons.
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