# 1 furnace fan control oil pipe leakage cases at a time

# 1 furnace fan control pipe leak case 2019 - at a time 02 - 03 March 2, 2018 at 15, no. 1 furnace fan shell leaks at a time, 16 6 points at a time when the fan fuel tank oil level down to the limit, apply to the province the consent of downtime. 3, 8 0 when unit 2 grid. Safety supervision organization after investigation and analysis of relevant departments and personnel to the occurrence of the incident and the reason analysis report as follows, for all the relevant units to reports seriously convey, organizational learning the lines, the lessons, actively implement the preventive measures, to prevent similar incidents from happening again. A, after the incident on March 2, 2018, when 15 40, electric load of 540 mw unit 1, 4 sets of the coal pulverizing system running, the main steam pressure is 20. 1 mpa, a fan instruction by 62%, 61% feedback, unit operation is normal. 45 points, 15 operators inspection found no. 1 furnace fan shell leaks at a time, notify the maintenance. 52 points when 15, no. 1 furnace fan control oil low flow alarm, a B control pump automatic rev. , 15, 58 minutes when a fan station low oil level alarm, 16 6 points at a time when the fan fuel tank oil level down to the limit, submitted to the provincial agreed, shut down the unit 1 ( Manual MFT) 。 3, 2, 1 furnace fan station transmission at a time, start high and low pressure oil pump, the moving blade, after debugging normal start unit 1, 4 at ignition, 8 0 1 unit grid. Adjustment and events cause analysis, hydraulic cylinder reciprocating movement, control of tubing is also as before and after the hydraulic cylinder to move, so the installation of tubing, tubing, direct contact with objects are forbidden to prevent damage of the tubing. Combined with the diffuser wall traces and metal tubing damage analysis, the main cause of the accident to control oil pipe and the diffuser wall direct contact for a long time, the friction force in hydraulic cylinder reciprocating movement and the fan, under the joint action of high frequency vibration friction lead to damage of metal tubing. 3, 1, losses from 4:00 PM on March 2, 2018 on March 3, 6 points to 8 0 extension group stopped when maintenance. Affecting the normal power generation unit 16 hours, according to the calculation, power application in March of 540 mw power influence of 8640 mw, affect the profit of 69. 750000 yuan. 2, unit fuel consumption: 25 tons, about 180000 yuan. A fan to fill two barrels of oil, about 400 l, 8000 yuan, the material cost 2000 yuan. 3, a total of 88. 750000 yuan. Four, exposed question 1 and maintenance personnel is not strong sense of responsibility, check does not reach the designated position, found no direct contact with the inner wall of the diffuser of tubing. 2, accident prepare adequately for the spare parts and prolonged the repair time. Five, the precautions should absorb the experience and lessons of the accident, the lines, touch has hidden the pipe mill equipment to conduct a comprehensive inspection, to prevent similar accidents from happening again. Six, the processing opinion according to the accident investigation analysis management standard ', the event constitute a kind of obstacles, 100% responsible production preparation department, appraisal 20000 yuan. （ Source: the electric power production safety)