How can zero-failure equipment management be achieved?

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With the rapid development of the market economy, enterprises are facing increasing competitive and cost pressures; thus, minimizing production costs and maximizing economic efficiency have become the goals that enterprises strive to achieve. Against this background, the so-called zero-failure equipment management emerged. 01 The concept of zero equipment failures. Simply put, zero equipment failures means that, before any failures occur, appropriate maintenance methods are used to inspect and repair the equipment, thereby eliminating potential faults and defects and keeping the equipment in good working condition at all times. Regarding the understanding of the zero-failure concept, it should be noted that: (1) zero failure does not mean that equipment will never experience failures; rather, it involves making every effort to prevent failures and maintain stable production operations. (2) Zero failures is a systematic concept. It is not difficult for an individual piece of equipment to achieve zero failures, but minimizing the impact of its shutdowns for maintenance on production is a complex process that requires taking into account the overall condition of the production equipment as well as the overall economic efficiency of the production system. (3) The core of the zero-failure concept is to eliminate unplanned shutdowns and emergency repairs. The losses caused by unplanned shutdowns and emergency repairs are enormous, and the consequences can sometimes be very severe. 02 Causes of Zero Equipment Failures and Equipment Failure Modes. There are many reasons for equipment failures, as well as various methods for classifying them; here, only a few aspects will be briefly discussed. ① From the perspective of the equipment’s service life, equipment failures can be divided into two categories: congenital failures – those caused by inherent defects in the equipment resulting from improper design or manufacturing. Functional failures – failures caused by factors such as installation and maintenance, operational handling, and natural deterioration of the equipment. ② Human factors in equipment failures: Strictly speaking, inherent defects in equipment are also a type of human factor-related failure. These defects are influenced not only by the skills and sense of responsibility of the designers and manufacturers but also by the stage of development of science and technology. After the equipment is in operation, careful operation and daily maintenance become the most important human factors. As the ancients said, “Disasters often lie hidden in subtleties, and arise from what people overlook.” ③ Equipment failure modes are primarily reflected by the Bathtub Curve. Different devices have distinct failure patterns; therefore, in practice it is necessary to carefully study the specific failure patterns and characteristics of a particular device, and to adopt appropriate maintenance, care, and repair methods accordingly. For early-stage failures, it is necessary to conduct in-depth research on various failure symptoms, investigate the causes of equipment accidents, and determine corresponding countermeasures and actions. During the equipment’s wear period, it is necessary to avoid unexpected failures; TPM (Total Productive Maintenance) should be strengthened, various monitoring techniques should be widely applied to understand the operating trends of the equipment, and management of equipment degradation tendencies should be carried out. 03 Analysis of maintenance methods for zero-failure equipment management. For equipment used in production processes, reactive maintenance is not advisable. Therefore, the maintenance methods under zero-failure management include the following aspects: preventive maintenance (also known as regular maintenance), predictive maintenance, and proactive maintenance (also known as corrective maintenance). The above three maintenance methods constitute reliability maintenance. In short, the maintenance approach of zero-failure management is to address the questions of \"when to repair and how to repair.\" 04 Discussion on Approaches to Achieving Zero Equipment Failures. “Zero equipment failures” – Zero equipment failure management is a complex systematic endeavor, and its management process is comprehensive. It requires the participation of all employees (from managers to operators and maintenance staff) and its application throughout the entire process (all stages of equipment management). The process of achieving zero-failure equipment management is also a process of improving corporate culture building. The approaches to achieving zero equipment failures are discussed from the following aspects. ① Reduce the probability of failures by minimizing equipment defects. Equipment defects cause equipment failures, and equipment failures lead to accidents. ““A dike a thousand miles long can be ruined by an ant hole”; achieving zero equipment failures starts with reducing equipment defects. The basic activities for reducing equipment defects are: 5S activities: Seiri, Seiton, Seiso, Seiketsu, and Shitsuke ； 8-character principle: Organize, tidy up, lubricate, adjust. ② Standardization, which is an effort to reduce defects, is a progressive process; to achieve an ideal state, standardized work documents must be established. Standardization forms the basis of the aforementioned efforts and is the essence of all management activities. The standardization process is one that progresses from small to large, from simple to complex; it is not possible to achieve perfection in just one step, and standardized documents need to be continuously revised and improved. ③ Implementing TPM and RCM: In fact, the aforementioned basic activities and standardization efforts aimed at reducing defects are precisely the essence of TPM, which is characterized above all by full employee participation. RCM starts with preventive maintenance and schedules planned inspections based on the results of equipment condition monitoring, in order to achieve the highest equipment utilization rate and the lowest maintenance costs. ④ Strengthening equipment condition monitoring and fault diagnosis is an effective way to avoid equipment failures and unexpected accidents. At the current stage, for Zhongtian Steel Company, priority should be given to the following aspects in equipment condition monitoring and fault diagnosis: (1) Continue to improve the two-level monitoring system consisting of inspections at the equipment department level and at the workshop level; implement quantitative inspection methods, and truly extend equipment condition monitoring and fault diagnosis techniques to workshop teams and front-line staff – this is key to achieving zero equipment failures. (2) Develop standardized procedures for equipment condition monitoring and simple fault diagnosis. (3) Strengthen the network-based online monitoring and diagnosis of critical equipment, promote the use of such networked monitoring technologies, and identify potential equipment issues early to prevent serious equipment failures. (4) Attach importance to the training of diagnostic technicians. ⑤ Create a good working environment and show comprehensive care for employees. Based on monthly equipment failures, those caused by \"improper operation\" and \"inadequate maintenance\" account for one-third of all such failures, or even more. Why? In addition to the aforementioned basic activities and standardized operations not being carried out properly, it is also closely related to the enthusiasm and initiative of the workforce. As the management levels of the company, they should carefully study this issue, starting from paying attention to all aspects of the employees’ work and lives. To implement zero-failure management, it is essential to adopt entirely new concepts and ways of thinking ； There is no unified model for implementing zero-failure management; it should be continuously discussed and summarized through practice ； Implementing zero-failure management will undoubtedly have a profound and lasting impact on all aspects of basic equipment management.