I. Daily work
Go to the office for a meeting every day, and the project leader will arrange the inspection content of the day, and arrange the inspection focus in the morning and the maintenance and elimination work in the afternoon according to the specific situation of the equipment to be repaired. According to the risks existing in the work, the safety officer analyzes the risk points and completes the risk pre-control measures.
Patrol inspection of automatic fire alarm system
1. First, go to * * every day to check the working status of the host, and check the alarms and faults.
1. 1 If there is an alarm, the handling is as follows:
1. 1. 1 first confirm the fire alarm. Press the confirm soft key, and the local sound device will stop sound. The fire alarm LED will change from flashing to lighting, and the controller will display the confirmation information on the screen and transmit historical memory and alarm.
1. 1.2 Check the fire location and type information, press the More Information button to enter the More Information screen, and confirm the accurate alarm address and alarm point.
1. 1.3 Go to the scene to confirm whether it is a real fire. If it is a real fire, take fire extinguishing measures. If it belongs to the automatic fire extinguishing area, open the corresponding deluge valve and put out the fire with gas cylinders. If there is no fire fighting in this protected area, you can put out the fire with a mobile fire extinguisher and notify the shift supervisor. If there is a false alarm, it is necessary to analyze the reasons, truthfully fill in the alarm content in the inspection record form, and find out the reasons for the false alarm. Without the help of ladders and scaffolding, the problems that can be solved can be solved immediately, and the problems that cannot be solved in time can be solved within 24 hours, so that the system can return to normal.
1.2 If there is any fault, handle it as follows:
1.2. 1 First, confirm the fault. Press the confirm soft key and the local sound will stop. The yellow fault indicator will change from flashing to solid. The controller will display the confirmation information on the screen and transfer the history to the memory.
1.2.2 Check the location and type information of the fault, and determine the exact location and address of the fault.
1.2.3 Go to the site to troubleshoot.
1.2.3. 1
If it is a system fault, first check the fault type, check the grounding fault item by item, and solve the system fault within 24 hours.
1.2.3.2
If it is a point fault, analyze the cause of the fault first. If the detector needs cleaning and maintenance, clean the detector in time, report it to the head of the equipment department for review, and fill in the * * * maintenance form for maintenance. After the maintenance is completed, the maintenance list should be returned to the equipment department for acceptance and confirmation before filing. If the detector does not respond to the fault due to line reasons, it is necessary to restore the system in time to make it return to normal. If the detector is damaged, it is necessary to fill in the Equipment Overhaul Handling Procedure Form, and analyze the damage causes and handling methods. For artificially damaged temperature-sensitive cables, you can first check the fault point and find out the damaged position. If there are few damaged parts of the temperature-sensitive cable, it can be handled in sections, and the temperature-sensitive connector must be replaced in the middle. For the treatment of faults, we must first analyze the causes and find out the real causes of damage and treatment methods. Report to the Equipment Department for approval, and carry out maintenance after the scheme is determined. In the process of dealing with defects, it is necessary to make records and describe in detail the treatment methods in the whole treatment process. After the treatment, it must be accepted by the equipment department, and it can only be put on record after it is qualified. Closed-loop processing should be adopted to deal with faults and defects, and supervision and management should be strengthened during the processing. Do site safety and civilized construction.
Handle the fault properly, and complete the work arrangement on time and with good quality according to the requirements of the equipment department.
2.1* * After the inspection, go to * * * system and * * * patrol the regional control panel to ensure the normal operation of the system. Ensure that the centralized control room can communicate with all regional panels normally, so that the centralized fire alarm controller of * * * can really play the role of monitoring and controlling all equipment in the whole plant.
2.3 After the system inspection is completed, the inspection records shall be made, and each unit shall fill in the Registration Form for Inspection Day of Automatic Fire Alarm System according to its own situation, and submit it to the project leader for review. After the daily inspection, the person in charge should hold a meeting to discuss and summarize the ways and means to deal with faults and defects. For faults that are difficult to judge and deal with, everyone should analyze and deal with them together. Fill in the handling opinions and report them to the Equipment Department for review. After treatment, fill in the maintenance record and report it to the Equipment Department for acceptance.
Patrol inspection of automatic sprinkler system;
1. Check and record the status of butterfly valves before and after the deluge valve group of automatic sprinkler system, and control the pressure of membrane cavity and valve body every day. When the pressure difference between the two meters is large, analyze the reasons to see if it is caused by the fluctuation of the pipe network. If the fluctuation is too large, reset the deluge valve again to make the pressure reach the normal working state. Check whether the manual switch and reset button of the valve body are in normal state, and check the working state of the hydraulic alarm bell and pressure switch (mainly to visually check whether it is loose or damaged, and the function check is to open the test valve for testing in the monthly experiment. ) check whether the solenoid valve leaks, whether the nozzles in each protected area are correct, and check whether there are closed nozzles in the heat collection cover.
2. For the pre-action system, check the running status of air compressor, stop valve and air maintenance device. By checking the vacuum pressure gauge of air compressor, check the working condition of pipeline and nozzle, and deal with the equipment with loose nozzle in time.
3. After the system inspection is completed, the inspection records should be made, and the daily registration form of automatic sprinkler system should be filled in according to the unit situation, which should be summarized to the project leader for review and submitted to the equipment department for review. The treatment of defects and faults should be carried out in closed-loop management mode.
Inspection of fire extinguishing by burning gas;
1. Smoke combustion gas fire extinguishing system. First go to the cylinder room to check whether the gas pressure is in the green area and the normal working position, and record the pressure. Record the status of the bottle head valve, solenoid valve and selector valve, mainly to see whether the booster ejector rod returns to the normal position, whether the manual starter and handle are in the normal position, and whether the bolt of the handle falls off.
2. Check the regional alarm host. Mainly check whether the alarm host has fire alarm and fault. If there is fire alarm and fault, it shall be handled according to the fire alarm and fault handling process and recorded.
3. Patrol inspection of gas protected areas. Check whether the appearance and wiring of indoor audible and visual alarm and outdoor alarm bells and gas release lamps in each gas protection zone are loose, check whether the local manual spraying, stop spraying and control box are damaged, and whether the manual spraying, stop spraying and maintenance switches are in normal positions; Whether the indicator light is in good condition. Then open the wiring in the inner layer of the control box, check whether the wiring is firm, check whether the nozzles in the protected area are loose, and regularly check the nozzles on the ceiling. Record the daily inspection, analyze the reasons, find out the treatment methods, fill in the Equipment Defect Treatment Maintenance Sheet, and submit it to the Equipment Department for review.
Equipment hygiene
The inspector shall clean and wipe the equipment every day for the sanitation of the interior of the main engine case, the basic pipeline of deluge valve, the local manual spraying and stop spraying control box, and the surface and interior, so as to keep the surface of the equipment clean and tidy. For the equipment in higher position, alarm bells, gas release lights and audible and visual alarm shall be set outside the gas protection zone. With the help of ladders, clean the equipment regularly to keep the equipment clean. The inspector shall clean up the manual of * * * on the same day.
Summary: The maintenance personnel of special fire protection system have done a good job in daily maintenance and defect elimination, and can rush to the scene to deal with equipment failure or false alarm at the first time. They have also done a lot of work in the management of hidden dangers of equipment, putting the normal operation of equipment in the first place. According to the standard of routine work, the inspection and treatment of hidden dangers should be infiltrated into daily work, but the written materials such as equipment account and defect elimination records need to be improved, and a detailed management system should be established to make the future work more clear and specific.
Periodic test
In order to ensure the normal working condition of automatic alarm and fire extinguishing equipment in Guohua Ninghai Power Plant, the function test of the equipment is carried out regularly. Testing is divided into monthly testing, quarterly testing, semi-annual testing and annual testing.
1. Monthly test:
1. 1 test target.
Mainly check the working state of the equipment. The automatic fire alarm system is mainly tested according to national standards:
1. 1. 1 fire alarm self-checking function
1. 1.2 Mute and reset function
1. 1.3 Fault and alarm function
1. 1.4 Fire Priority Function
1. 1.5 alarm memory function
1. 1.6 Automatic power conversion and automatic charging function
Test according to the manufacturer's equipment standard:
1. 1. 1 Check the electrical performance of the signal loop and the power supply voltage level.
1. 1.2 Detect all parameters of linkage output ports.
1. 1.3 Detection of audio prompt function
1. 1.4 detect various switch functions.
1. 1.5 Check whether various function display lights and indicator lights are normal.
1. 1.6 Test the printer function.
1. 1.7 Test the communication function between CRT and host.
1. 1.8 networking test function
Monthly experiments are carried out by maintenance personnel for a certain area or a certain system according to the specific conditions of the equipment. In the daily inspection, problems or hidden dangers are found in the system, and the direction is clear through experiments, and the root causes of the problems are found and dealt with.
For automatic sprinkler systems:
Main test: by opening the experimental valve, test whether the hydraulic alarm bell works normally, whether the pressure switch works normally and whether it has been fed back to the fire alarm host, and manually turn on the deluge valve test alarm function.
For gas fire extinguishing systems:
Main tests: manually turn on the manual starter, test whether the working state of the solenoid valve booster is normal and reliable, manually start the pressure switch, whether the alarm is normal, and whether the host display is normal. Test whether the function of manual spraying and stop spraying control box is correct, whether the actions are corresponding, and whether the alarm bell, acousto-optic alarm and gas release lamp are normal.
2. Quarterly testing;
On the basis of completing the monthly test, the equipment is automatically linked to the test. The linkage test of automatic fire alarm system, automatic sprinkler system and smoke combustion gas fire extinguishing system is carried out to make them play a monitoring role in the automatic state.
3. Semi-annual test:
On the basis of quarterly completion, all the performance tests of the equipment are carried out to check its comprehensive functions, including the linkage with HVAC and water pump and the test of foam fire extinguishing system. So that the whole system can work normally.
The above is the test plan. For the specific conditions of the test, according to the actual situation of the power plant, make a regular test plan, standardize the test steps, test purposes, test risk assessment and measures taken. It can make the equipment reach the normal working state and achieve the purpose of maintenance.
* * The half-year experiment started in the first half of * and lasted for two weeks. The automatic alarm system and automatic fire extinguishing system in * * *, * * and other areas were comprehensively tested, and the sampling rate reached 50%. Many problems and hidden dangers were exposed in the experiment. In the experiment, without affecting the progress of the experiment, the fault was handled while doing the experiment, and the detailed fault handling record was made. After the experiment, in view of the problems found in the experiment, a detailed rectification plan was made and included in the weekly maintenance plan.
4. Irregular experiment
* *' s unplanned experiments are mainly * * *' s * * flood valve blowout experiment and * * * * experiment. Both experiments have been successfully completed. After the experiment, the nozzle and filter were cleaned and a detailed technical analysis report was made.