202 1 Summary of Instrument Worker's Year-end Personal Work (I) 202 1 was a year of soaring in xx Branch, and I felt deeply encouraged and urged to work in ordinary posts. Looking back on the past year, I was deeply moved from Lunan Project Department of xx South Double Dispatching Project to xx Zhongneng Phase II Project Department and then to xx Zhongneng Phase III Project Department. The following is a summary of my work in xx.
First of all, I reviewed and summarized my work in xx Project Department at the beginning of the year. Xx South Project Department is the first project after I joined the work. I work as an electrical instrument technician in the engineering department of the project department. The beginning of the year is the tense stage of debugging the synthesis device system of xx project department. Due to the complexity of the interlocking control system of the synthesis device and numerous intelligent instruments, the task of system debugging for the electrical instrument specialty is extremely heavy, which is a severe test for me who has just joined the work for less than one year.
Debugging and interlocking debugging of instrument system are the key and difficult points in instrument construction. Therefore, in order to fully understand and master the debugging methods of instrument system, after work, I humbly learned the methods and precautions of instrument installation and debugging from every master on site, actively participated in the installation and debugging of instrument engineering construction, and achieved good results, laying a foundation for successfully completing the technical tasks of instruments in the synthesis device.
Xx South Synthesis Plant consists of syngas compressor system, ammonia compressor system, ammonia synthesis compressor system, ammonia synthesis system, refrigeration station system and hydrogen recovery system. There are many control interlocking points between these systems, and the principle is complex, which puts forward extremely high requirements for instrument wiring debugging. The whole synthesis plant control system is divided into Siemens itcc syngas unit monitoring system, esd ammonia unit monitoring system and Zhejiang University central control dcs distributed control system. Among them, the monitoring system of compressor and turbine plays an important role in the control system of the whole synthesis device. Therefore, in the system debugging stage, we first concentrate on debugging itcc and esd monitoring system, mainly monitoring and controlling the shaft vibration and displacement of turbine and compressor unit and the turbine speed. In addition, a unique phenomenon of compressor unit is surge. The air flowing back and forth in the compressor is surging, accompanied by the sharp rise of compressor vibration, similar to the huge abnormal sound of asthma patients. If it cannot be effectively controlled, it will cause serious damage to the compressor. Surge condition develops very fast, usually within xx seconds, so accurate control algorithm and fast control algorithm are needed to achieve effective control. Surge phenomenon is very harmful to compressor unit, and even causes serious accidents. Therefore, in the stage of instrument debugging, the correct detection and accurate control of anti-surge regulation loop system is the key to ensure the normal start-up of compressor unit. During the system commissioning stage of Lu Hua Synthetic Plant, I and the field instrument commissioning personnel actively cooperated with the commissioning personnel of the owner to conduct many tests on the anti-surge regulation loop system of the syngas compressor unit and turbine unit, and made detailed test records. Secondly, the interlocking control and debugging of various pumps in lubricating oil system and condenser system is another key point of electrical instrument debugging, and the correct interlocking of main and auxiliary pumps of lubricating oil and condensate water is also the key to the normal operation of compressors and steam turbines. Therefore, during the system debugging, I analyzed the interlocking schematic diagram designed by the design institute with the construction team to deeply understand the design intention. In particular, the interlock between the lubricating oil pressure and the start-stop of the main and auxiliary pumps of lubricating oil and the start-stop interlock of the main and auxiliary pumps of condensate water is the key to the normal operation of the whole compressor unit and steam turbine generator set. According to the design drawings of Lu Hua Synthetic Factory, the main and auxiliary pumps of the original lubricating oil pump and condensate pump are interlocked in the field operation column for field control. In order to better monitor and control the interlock of main and auxiliary pumps in real time and ensure the safe operation of the whole unit, interlock control is added in the instrument control room after consultation with the owner's instrument specialty. After half a month's intense rectification and debugging, the lubricating oil pressure control system, speed regulation system and interlocking self-protection system of the unit have all met the requirements for start-up, which laid a solid foundation for the smooth start-up of Lu Hua synthesis plant.
Xx project, the second phase of xx project, is the second project after I joined the work. The biggest feature of the instrument engineering of xx project is that there are many intelligent regulating valves and on-off valves, many switch points in the control room, small instrument construction space, short construction period and large engineering quantity, and the process media in the bus are mostly flammable and explosive, which puts forward higher requirements for the performance of regulating valves and on-off valves, and also puts forward high requirements for the cleaning, pressure test and leakage test of regulating valves in our construction unit. In order to better complete the cleaning, pressure test and leakage test of more than 300 control valves, we concentrated on the cleaning, pressure test and leakage test of control valves in the prefabrication yard before installing the control valves. Because most control valves are air-open control valves, it brings many difficulties to the cleaning and degreasing of control valves. After consulting with the technicians of the construction team, it is decided to use the air pump as the instrument air source, and use the hart communicator to apply a signal to open the control valve, and the cleaner will clean the control valve when it is opened. Ensure that the process pipeline installation team can install the regulating valve in time, which speeds up the construction progress; When the reduction workshop of the second phase project started normally, the indoor temperature of the bus was as high as 40 degrees Celsius, which greatly affected the flow measurement accuracy of trichlorosilane and hydrogen feed pipeline (thermal mass flowmeter). In order to improve the measurement accuracy of material flow, after consultation with the owner and supervisor, the intelligent meter head of the thermal mass flowmeter was moved to the outer wall of the bus, and a special sensing cable was connected from the sensor of the thermal mass flowmeter to the meter head through a cable protection tube to avoid the influence of high temperature in the bus.
After the production and operation of the secondary reduction workshop for a period of time, the owner's technicians found that the temperature of silicon gas filtered by vaporized hydrogen dropped after it came out of the connecting pipe between vaporizing chambers and entered the bus room, so the normal heat preservation measures could not meet the normal production of products. The owner decided to add electric tracing to the trichlorosilane pipeline, and the electric tracing temperature control scheme adopted xxx e5cz-r2 intelligent temperature controller to control the electric tracing belt. During each shutdown, the owner shall remove and restore the insulation layer of the corresponding pipeline, wind the electric tracing tape, install the explosion-proof distribution box of the branch pipeline, install the cable protection tube and temperature controller, install the terminal junction box, cable laying, wiring and debugging, and the power supply shall be taken from the explosion-proof main distribution box; At the request of the owner, the electric tracing belt shall be wound on the pipeline. Because the temperature of the pipeline is too high, construction workers are forbidden to touch the high-temperature pipeline with any part of their bodies at work. When fixing the tracing belt and the temperature probe, one person shall fix the tracing belt with mechanical tools such as pliers, and the other two persons shall hold hands at both ends of the tracing pipe and fix the tracing belt with aluminum tape.
The main physical quantities of the instrument installation project of xx project in the third phase of xx are: three sets of xxx tps dcs control systems, with analog points and digital points totaling more than X million points; FRP trough cable tray 1 10,000 meters, instrument control cable over 600,000 meters, pipe 1 10,000 meters, intelligent instrument equipment such as regulating valves, flowmeters and transmitters 1 10,000 pieces; Three production lines are constructed at the same time, and the specialties of civil engineering, process piping, heating and ventilation, decoration, electricity and instrumentation are ultra-deep construction. The first production line was delivered and installed by civil engineering at the end of X, and delivered to the owner for production at the end of X. The instrument construction period is very short and the task is extremely heavy. Xx central control room phase iii construction, see the layout of instrument bridge. According to the layout of instrument covered bridge in xx central control room designed by design institute (white picture), the space of instrument covered bridge originally designed is too small. If it is constructed according to the original design, the installation of instrument bridge and cable laying are too small to be constructed. Moreover, because the covered bridge is in the ceiling, which is a 100,000-class clean area, people will not be able to enter the ceiling after construction, which will bring great difficulties to the maintenance of various instruments in the future.
According to the actual situation on site and discussion with the owner, the instrument covered bridge is changed to a steel platform, and the trough bridge is cancelled. Through the cost analysis and comparison between the original design of FRP trough bridge installation project and the modified instrument steel platform installation project, it is found that the original design total cost is more than 5 million yuan, including the installation cost of more than 900,000 yuan, and the modified total cost is more than 3 million yuan, including the installation cost of more than 2 million yuan (the steel structure material is provided by Party B). This change not only facilitates the installation and construction, creates conditions for laying instrument control cables, but also brings great convenience for the maintenance of various instruments in the future. Save the owner more than 2 million yuan in total cost and increase the installation cost by more than 1 million yuan.
At this stage, the instrument installation project of the first production line of xx project in the third phase of xx has entered the normal production stage, and the instrument installation project of the second production line has entered the stage of system pressure test and leakage test. For an engineer like me, the challenge has just begun. In my future work, I will try my best to learn new knowledge, sum up experiences and lessons, and meet new challenges with more enthusiasm.
202 1 summary of personal work of instrument workers at the end of the year (2) in the past year, I feel that learning from my colleagues, especially as a technical maintenance person, will definitely become a bottleneck restricting the development of personal work ability if I don't learn with an open mind and actively seek advice. Therefore, every colleague in my own unit or their headquarters is my teacher. I insist on learning from my colleagues, learn from each other's strengths, strive to enrich myself, enrich myself, improve myself, cultivate the work habit of being diligent in thinking, enhance the ability to handle accidents independently, and basically meet the needs of work. Only by constantly learning and seeking advice with an open mind can we continuously improve our own quality and ability.
As a computer major graduate, I am engaged in the work of instruments. Although the instrument major on the platform also involves computer knowledge, there are still many shortcomings for me, especially in some professional work. And it's an internship this year.
The standard requirements for professional and technical personnel are strict, and they are basically qualified for the responsibilities of instrument maintenance.
I will continue to maintain a modest attitude, learn from others, help others, sum up experience, improve my professional level and contribute to the company.
The parameters of the instrument are set correctly. For example, the liquid level of a device is an open container, how to set its range, if it is closed, how to set its range, if it is equipped with a pressure guide tube, how to set it, including the working environment of the process and what medium is inside. For example, a practice always fluctuates. First of all, you need to know whether the fluid flows into or out of the container through practice, whether the pressure difference between the two sides is very large, whether the pump head can reach it, whether there is a problem with the positioner, and whether the pid on the dcs is adjusted correctly. In short, there will be many problems in the debugging process. When you participate in the processing, your skills will rise to a new level. As an instrument worker, it is far from enough to have the ability to deal with faults. Besides, you should also know the selection of instruments, anti-corrosion maintenance and how to do it safely.
The medium in the instrument on a pipeline is acid, alkali and mixture. What kind of instrument should be selected when there is redox reaction medium, and what kind of instrument should be selected when there is vacuum and high temperature. These are all very important, otherwise an instrument worth tens of thousands of yuan will not be damaged by the harsh environment in a few days.
202 1 personal work summary of instrument workers at the end of the year (3) 202 1 This year passed quickly. During this year, with the care of leaders and the help of colleagues, my instrument maintenance level has been improved. Colleagues in the class helped each other in life and cooperated with each other in work, which enabled us to overcome one problem after another. In order to better complete the work, during this year, I have done the following work:
1, check on time whether there is any leakage at the dynamic and static sealing points of the field instruments, and fasten and replace the gaskets in time; Whether the instrument air, heat preservation and heat tracing are normally supplied, eliminate defects and ensure normal supply; Check whether the on-site control cable is damaged or exposed, and eliminate unsafe factors in time. Ensure the normal operation of instruments and equipment, find unsafe hidden dangers in time and deal with them in time, so as to nip in the bud, thus ensuring the safe and stable operation of production. In terms of maintenance and reconstruction, the main work is to repair and replace the damaged heat tracing pipeline, keep the instrument warm in winter, eliminate the leakage point of the pressure guide pipe and repair the valve positioner; Cleaning the garbage on the cable tray box has made its own contribution to the smooth start-up of the device.
2. Deepen safety awareness. Only with a strong sense of safety can accidents be effectively prevented. Only by consciously participating in safety management and consciously observing safety operation rules can we achieve the goal of safe production. The workshop actively organizes employees to carry out safety training systematically to strengthen the awareness of safety production. Carry out the national security policy of "safety first, prevention first and comprehensive treatment", strengthen the safety management of overhaul construction site, strengthen the awareness of self-protection, and insist on putting safety work in the first place.
With the development of things and the passage of time, many new problems and contradictions will be exposed in our daily work, which requires us to keep pace with the times and keep exploring. In order to better learn from experience and lessons, I analyzed the problems existing in my work and made the following summary:
Work experience needs to be improved, knowledge is not detailed and rich enough, and technical means are not mastered enough. I will learn to ask questions I don't understand with an open mind, strive to enrich myself, enrich myself, find my own gap, expand my knowledge, constantly cultivate and improve my working ability, and further improve my professional quality and working ability. I also hope that the company leaders and colleagues will put more demands and suggestions on me, so that I can improve myself faster and better and better meet the needs of my work.
202 1 I will continue to maintain my strong work enthusiasm and devote myself to my work. The work plan for 2022 is as follows:
1. Do a good job in installation, debugging, daily maintenance, repair and calibration of instruments.
2. Conduct efficacy measurement regularly to ensure the accuracy of measurement.
3, strengthen safety learning, to ensure their own and equipment safety.
4, strengthen their own learning, improve their professional level.
202 1 personal work summary of instrument workers at the end of the year (4) 202 1 is drawing to a close, and we have gained too much this year. Although this year's driving experience is not long, but this year's contact with the work may be the most over the years, all the things that happened in the past year, full of emotion.
The company made an overhaul plan from the beginning, which is very important for the instrument department and is very critical for the long, full and optimal operation of the system devices. Fortunately, as a member of the instrument, I also participated in it. This overhaul is a kind of luck for me and any musical instrument. I learned a lot in this overhaul. Including configuration modification of various control systems. Adding control points and so on, these work let me know more clearly what kind of process dcs is. What I didn't know before was also learned in this overhaul.
Of course, in this overhaul, I learned some knowledge about software configuration. At the same time, I also learned the composition and connection of dcs hardware, which made me have a more systematic understanding of dcs hardware composition and communication. In this process, there is no lack of understanding of field instruments. If there is an opportunity in the future, learn more about instrument valves to lay the foundation for better work in the future.
Coincidentally, at the end of the overhaul, some of us were arranged to study in Lunan Institute of Chemical Technicians. As we all know, training is the best welfare for employees. During these two months of training, I think this is a sublimation of my life. Here, all the fragmentary knowledge about musical instruments has been rearranged, and all the knowledge has been systematized in my mind. It also satisfies my thirst for on-site instrument knowledge.
After the training, I plunged into the intense driving preparation stage. This stage is also a process of learning and summing up experience for me, through various debugging and calibration of the instrument. The test of system interlock made me understand the operation of each system more clearly.
Instrumentation is a highly professional department with a heavy task. As an instrument worker, I shoulder the heavy responsibility of maintaining the normal production of the whole plant, because what I do is highly technical, and every job is related to whether the system can operate normally and the economic interests of the company. Nothing can be ignored. I also made a big mistake on this issue. Because of my negligence, the system stopped, which is not good for the reputation of the department.
A fall into the pit, a gain in your wit. In the future work, I will be more calm, steady, positive and efficient to complete various tasks, and seriously study the knowledge of related majors.