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Understanding and Analysis of Equipment Technical Appraisal Work Abstract: Equipment technical appraisal is an important aspect of equipment technical management. The article provides a detailed analysis of the meaning, functions, and practical operation of equipment technical appraisal, and points out its future application prospects. Keywords: equipment, technical appraisal, analysis, application. “Equipment is technological materialization.” ”This sentence fully reflects the characteristics of modern equipment, namely its comprehensive technical content. Whether it is equipment design and manufacturing, or equipment installation, use, and maintenance, or equipment repair and renovation, a great deal of technology is involved. In the field of modern equipment engineering, lubrication technology, diagnostic technology, repair technology, and renovation technology are regarded as the four major categories of technical management. Here, the author suggests that there is another quite important aspect of technical management in the field of equipment engineering, namely equipment technical appraisal. The author would like to share some insights here and exchange ideas with colleagues. I. The meaning of equipment technical appraisal Generally speaking, equipment technical appraisal refers to a technical process in which units or individuals with appropriate qualifications use advanced technical methods to conduct a comprehensive assessment of the overall technical level and usability of equipment, thereby arriving at timely and accurate conclusions. II. Scope and Role of Equipment Technical Appraisal: Which aspects of equipment management require technical appraisal? What is its purpose? The author believes that technical evaluations should be conducted for the following 6 work stages. Some of these steps might not yet be what we commonly refer to as technical evaluation. 1. Equipment installation inspection: Whether it is newly purchased equipment, equipment that has undergone major repairs, or equipment that has been relocated, an inspection must be carried out after installation and commissioning. This is essentially a technical assessment to determine whether the technical performance of equipment manufacturing and repair meets the specified (or agreed) operating conditions. Generally speaking, installation acceptance includes: (1) accuracy testing ； (2) Performance testing ； (3) Stress test. In the acceptance assessment, a specific and fair evaluation of the equipment’s integrity and the level of technical performance achieved must be given. Those that meet the contract requirements can be put into production operation ； For those that do not meet the standards specified in the contract, negotiations should be held with the manufacturer or supplier, and claims should be filed if necessary. Given the time limit for filing claims, the equipment should be installed and inspected promptly upon arrival, and especially for imported equipment, detailed inspection records must be kept. 2. Handling of equipment accidents: An abnormal damage that occurs during equipment operation and reaches certain threshold criteria (usually including regulations regarding downtime and economic losses) is referred to as an equipment accident. Equipment involved in an accident generally undergoes two technical assessments: the first is to determine the extent of the damage caused by the accident, in order to determine its nature and type ； For the second time, determine the degree of precision and performance recovery of the equipment after repair. Some equipment is severely damaged as a result of accidents, making it difficult to restore its original technical performance levels; in such cases, it can only be used at a reduced capacity. This should be clearly indicated so that the equipment can continue to be used appropriately. For equipment covered by asset value insurance, after an accident, a technical assessment must also be conducted by the relevant authorities to determine liability for the accident and the extent of damage, so as to decide on how to provide compensation. 3. Equipment repair (including renovation) inspection: Whether major repairs or technical renovations are carried out in-house by the enterprise or by external professional firms, inspections and evaluations should be conducted before and after the work is completed. Especially for repairs commissioned by others, it is necessary to carry out thorough inspections, including checking the integrity and technical condition of the equipment before repair (modification) and keeping records thereof. This is partly to determine the objectives and scope of work for the repair (modification) ； On the other hand, it is to prevent the contractor from accidentally damaging parts that were originally functioning properly during repairs (renovations). 4. Appraisal for equipment leasing, mortgage, and transfer: When important equipment (including complete sets of equipment, key equipment, special equipment, etc.) is leased, mortgaged, or transferred, the lessor, mortgagor, or purchaser needs to obtain a written technical appraisal report from specialized technical appraisal agencies in order to understand the main technical performance characteristics of the equipment. 5. Equipment value assessment: A common method for assessing the value of existing equipment assets is the “replacement cost method”. When using this method to evaluate the present value of equipment assets, an important parameter must be determined, namely the equipment’s condition rate. There are many methods for determining the rate of obsolescence; among them, the technical appraisal method is relatively complex but also more accurate. 6. Determination of equipment retirement Equipment retirement is a necessary procedure for writing off assets and updating equipment, and it should be approached with a proactive and cautious attitude. The general principle is that equipment that meets the criteria for disposal should be allowed or required to be scrapped, provided that the necessary procedures are followed and a clear assessment is provided. The current criteria for scrapping equipment are similar across various industries; generally, they include the following 5 aspects: (1) From the perspective of physical lifespan, the main structures and components of the equipment are severely damaged, and its technical performance no longer meets the ultimate requirements for production and operation ； (2) From the perspective of economic life, the equipment is severely damaged; although its performance can be restored through repair or modification, the costs involved are high, making it uneconomical ； (3) From the perspective of technical lifespan, when the technical performance of the equipment becomes outdated, it loses its utility in production operations ； (4) From the perspective of social development, those that are energy-intensive, cause environmental pollution, and pose threats to human safety and health ； (5) From the perspective of actual implementation, major repairs, renovations, or reconstruction in another location for building-related equipment, etc. III. Operation of equipment technical appraisal Equipment technical appraisal is carried out by the enterprise itself, or it can be entrusted to professional technical service organizations in the industry or social associations in the field of equipment engineering. In a sense, the latter is more objective and fair, and should be recommended. 1. Contents of technical appraisal: When conducting technical appraisals of equipment, it is necessary to carry out appropriate inspections and tests on the following 5 aspects, as well as conduct interviews regarding the equipment’s operating conditions. (1) The integrity of the main structural framework of the equipment. (2) Conditions that meet the requirements of production feasibility and operational reliability. (3) The condition of the main components, new or old. For example, if the car has been in use for a long time but the engine has just been replaced, this should be taken into consideration. (4) The advancement of equipment technology and the degree to which it is maintained. For example, ordinary machine tools can be modified with CNC technology ； Another example is that the control systems of CNC machines are aging and prone to frequent failures. (5) Safety of equipment operation, energy consumption, and environmental protection level. These projects are particularly important at the moment. 2. Procedures for technical appraisal: To carry out technical appraisal of equipment, it is first necessary to form a technical appraisal team with varying numbers of members. The basic requirements for appraisers are: (1) having a technical title of engineer or above ； (2) Having at least 5 years of continuous work experience in equipment engineering technology ； (3) Have a serious, responsible, pragmatic, and fair work attitude. The main procedures for the technical evaluation of equipment are: (1) Reviewing the technical documentation of the equipment under evaluation to understand the basic aspects of its design, manufacturing, installation, operation, maintenance, and repair. This includes information such as the manufacturer of the equipment, the year it was produced, the number of years it has been in use, its operating conditions, any faults or accidents that have occurred, the repair measures taken, as well as various inspection records. (2) Please ask the operators, maintenance workers, and managers of the equipment to be evaluated to describe the actual conditions of its use and maintenance. (3) Conduct actual inspections and measurements of the main structure and key performance (precision) of the equipment under evaluation. (4) Based on the criteria for the technical evaluation of reference equipment, formulate a conclusive opinion on the technical evaluation of the equipment under evaluation. Fill out the appraisal report, have the appraisers sign it, and have the organizing unit stamp it. 3. Basis for technical evaluation The main criteria for conducting technical evaluations of equipment are as follows: (1) Relevant technical standards. The main ones include: ① Equipment design and manufacturing standards, which encompass **national standards, industry standards, and corporate standards ； ②Equipment repair standards ； ③Procedures for the safe operation of equipment ； ④Energy consumption standards ； ⑤Environmental protection standards. For example: smoke and dust emission standards, environmental noise standards, etc. (2) Technical requirements for equipment production and operation processes in the industry and enterprises. (3) Experience of equipment technical evaluation engineers. The appraisal process relies primarily on objective technical standards and technical documents, but there are always some special or individual cases that require appraisers to make supplementary judgments based on their experience. 4. Conclusions of technical appraisal The technical appraisal of equipment should take into account factors such as the physical condition of the equipment, its technical status, as well as economic analysis and social impacts, in order to draw conclusions regarding the equipment under appraisal. The evaluation results are generally divided into 5 levels. (1) Class A: Newly produced equipment or equivalent level. For example, devices that have been in operation for a short time ； For example, equipment that has undergone major repairs reaches the technical standards of when it was first manufactured. (2) Class B: The equipment has good technical performance, with no obvious wear or damage. (3) Class C: The equipment shows obvious wear, but its performance meets the process requirements or safety operation requirements. (4) Class D: The equipment is significantly damaged or its performance is outdated, but it can meet the basic processing and operational requirements through repair or modification. (5) Class E: The equipment is severely worn or damaged, has poor performance or high energy consumption and significant pollution, and is not suitable for repair or renovation. IV. Example: In 1993, a colored steel plate factory in Beijing imported a set of steel plate pretreatment equipment from Japan, with a total asset value of approximately 8.33 million yuan. Due to serious defects in the design and manufacturing of this equipment, rusting of the casing and leakage of alkaline liquid occurred shortly after it was put into use, resulting in frequent shutdowns for repairs and affecting product quality. At the same time, environmental pollution is caused by the leakage of alkaline solutions. To this end, tens of thousands of yuan are spent each year on sewage treatment fees. For such a set of equipment with a net asset value of 4.77 million yuan, it cannot be used and is difficult to dispose of, thus becoming a heavy burden on the enterprise. In November 2004, the factory asked the Beijing Equipment Management Association to organize experienced experts for a technical appraisal. Experts believe that the device is severely damaged and pollutes the environment; although it still has some asset value, it has no practical use any longer, and they recommend disposing of it. The disposal of this equipment has now been approved by the relevant authorities. V. Conclusion In summary, equipment technology appraisal is a systematic task of great significance and with strict procedures; it has been recognized by society and deserves attention from all sectors involved in equipment engineering. The author suggests that the equipment management departments of enterprises and institutions should assign engineers to handle this task, gradually streamline work procedures, accumulate data, and summarize experience, so as to make equipment technical evaluation more quantitative and practical, and to play a role in areas such as equipment investment, operational efficiency, and profit generation. At the same time, professional organizations in the field of equipment engineering should also actively organize technical experts to support the technical evaluation work carried out by enterprises and institutions, so as to make equipment engineering better suited to the needs of market economy development.