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| During the maintenance operation in the hot air duct of a thermal power plant, the thermal control maintenance worker did not check the equipment name and identification without the conditions for equipment trial operation, and opened the inlet heat-secondary air pneumatic sliding door air source solenoid valve and The Air Source manual valve with the safety tagout of "No operation and manned work" is hung, so that the previously closed thermal primary air pneumatic sliding door at the inlet of C coal mill is opened, so that hot air with a temperature of 309C and a pressure of 6kPa is sprayed into the inlet primary air. In the road, a production safety accident caused 3 deaths. |
When a methanol factory was about to complete the maintenance of the circulating water axial flow fan and replace the fan blades, the workshop director on site notified to prepare for the start-up trial operation. Under such circumstances, the main air switch of the axial flow fan in the power distribution room was closed in violation of regulations, causing the axial flow fan to start up by mistake, resulting in a production safety accident in which 3 people were killed and 1 person was slightly injured. |
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