Welding on parking step purifier

Welding centralized parking step purifier purifier, the temporary closure: a. Close the flue duct blower, cut off, wait for 3 ~ 5 min. b。 According to the electric field in order to turn off the power supply unit of high voltage power supply, and the high voltage control cabinet lock; c。 Close all import and export of flue damper; d。 Let the vibrating system and heating system for a stop phase intermittent operation; E for personnel to enter the electric field repair, should ground high pressure parts, Yin and Yang are extremely shaking stops, and such as electric field after cooling, wearing protective clothing have lighting before entering. Welding purifier, long-term close: a. Complete the temporary closure & throughout; The steps required in a ~ c; b。 Cut off the power supply unit of high pressure isolating switch and lock; c。 Turn off all heater system, temperature control system and material level control system; d。 Vibrating system and ash discharge in high voltage power supply cut off and then continue to run until to clean all dust from the electrostatic precipitator to eliminate; e. Open manhole door, in order to the internal ventilation cooling, so as to prevent injury and reduce the risk of corrosion; f。 Cut off the total power switch ( But does not include lighting) ; g。 After high pressure parts grounding and servant here before in the lighting conditions in the electrostatic precipitator; h。 Maintenance after the completion of all manhole door closed.