The installation and use of local fan and air duct with thos
Date:2013-10-10 Hits:
The installation and use of local fan and air duct with those rules? According to the coal mine safety regulations stipulated in article 128th:
(a) the local fan must be managed by designated personnel responsible for, to ensure the normal operation.
(two) is pressed into the local fan and a starting device, must be installed in the wind tunnel, from the tunnel air return shall be not less than 10m; inhaled air pressure supply air volume must be greater than the local fan, fan installation location to the lowest wind tunnel air return port must be in accordance with the relevant provisions of the rules of article 101st.
(three) high gas coal mine, coal (rock) and the gas outburst mine (carbon dioxide), low gas coal mine of high gas coal lane, half coal rock roadway and gas emission of rock heading face the normal work of the local fan must be equipped with the same capacity backup local fan, and can automatically switching. The local ventilator work must use three special (special switch, special cable, power supply transformer, special transformer) for up to 4 different sets of heading face local fan power supply; spare local fan power supply must be taken from another power charged, local ventilator fault when the normal work, spare part ventilation can automatically start, maintain the normal working face.
(four) the local fan ventilation place other tunneling working surface and the normal work of the installation of spare not equipped with local fan, but local ventilator work must use three special power supply; spare local fan ventilation machine or the normal work of the equipment to install a similar ability, and can automatically switch. The power of local fan work and alternate partial ventilator must come from at the same time the power of independent charged different mother line, ensure the normal work of the local fan fault, the normal work of alternate partial ventilator.
(five) must adopt antistatic, flame retardant duct. Duct mouth to cross duct joint local fan and duct tunneling working surface distance, hybrid ventilation installation, the normal work of the local fan and alternate local fan automatic switching specifications and installation standards, shall be specified in the job specification.
(six) the normal work and spare local fan are the loss of power to stop running, when the power is restored, the local fan working and backup local fan shall be automatically started, must be manually open the local fan.
(seven) the wind for the use of local fan sites must implement the wind electricity closed, to ensure the normal work of the local fan when stop running or stopping the wind can cut off the power supply to stop the wind zone all non intrinsically safe electrical equipment. The local ventilator fault normal work, switch to the standby ventilation machine work, the local fan ventilation must stop working, troubleshooting; after the fault is eliminated, local ventilation returned to normal work before the resumption of work. The use of 2 sets of local fan at the same time for the wind, and the wind electricity closed must be 2 sets of local fan.
(eight) at least once a methane wind electricity locking test every 10 days, every day should be automatically switched local ventilator and alternate partial ventilator test for a normal work, shall not affect the local ventilation during the test, test records to be archived for future reference.(nine) prohibited the use of more than 3 (including 3) local ventilator at the same time to the 1 tunneling working surface for the wind. Do not use 1 local ventilator at the same time to the tunneling working surface in 2 operations for the wind.
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