Summary of basic knowledge on equipment inspection standards

Thread Content

Equipment inspection standards – Summary of basic knowledge. Modern production equipment is increasingly becoming larger in size, operating on a continuous basis, at higher speeds, and with a higher degree of automation. When a failure occurs, it can lead to complete shutdowns, affecting the entire production schedule and causing significant economic losses for the company. Equipment inspection helps people accurately predict the service life of equipment, laying the foundation for its safe operation, reducing equipment-related accidents, and maximizing efficiency. Therefore, equipment inspection is very important in production. The inspection system is a equipment management method that involves checking specified parts of the equipment at regular intervals and in accordance with certain standards, in order to detect potential faults earlier and carry out repairs and adjustments promptly, thus ensuring that the equipment maintains its designated functions. The equipment inspection system is not merely a method of inspection, but also a system and management approach. Its essence is a total maintenance system based on preventive maintenance and centered around routine inspections. The enterprise adopts a equipment maintenance model centered on the inspection system, which brings standardization, institutionalization, and normalization to its equipment management practices. This approach meets the requirements of modern production methods regarding process equipment, enables effective prevention of accidents, improves the level of equipment management, ensures the reliable and efficient operation of production equipment, and enhances the enterprise’s overall economic efficiency. The equipment inspection standards specify the basic requirements for inspection tasks, taking into account the functional and structural characteristics of various parts of the equipment. The key aspects include the inspection areas, items, contents, assignment of inspection tasks, the status of the equipment during inspection, inspection methods, inspection intervals, and judgment criteria. Inspection standards serve as the basis for conducting preventive inspections on equipment; they are the standard guidelines for inspectors to carry out their inspection tasks, and they form the foundation for developing inspection plans. Together with lubrication standards, maintenance operation standards, and maintenance technical standards, they constitute the four key standards of the inspection and maintenance system. Abbreviated as the “Four Major Standards”. Inspection standards serve as the basis for conducting preventive inspections on equipment; they form the foundation for creating inspection schedules and checklists, as well as for determining how to carry out these inspections. There are eight principles for equipment inspection: fixed location, fixed method, fixed standard, fixed frequency, fixed condition, fixed category, fixed procedures, and fixed personnel. PART.01 Images: Principles for determining the inspection points and items. Images refer to those parts that are subject to preventive and predictive maintenance inspections; they are generally the components of the equipment where failures or deterioration may occur, such as the sliding, rotating, and transmission parts of the equipment ； Parts in contact with raw materials, parts subject to corrosion by energy media, load-bearing parts ； Electrical insulation parts, etc. Component inspection items, such as bearings in the rotating parts, gears or racks in the transmission parts, and disassembly inspections, are included under the “Items” category. PART.02 Images: Creation of content for image inspection items – refers to the diagnostic elements for the degradation inspection items of that particular area. The twelve key elements for inspecting mechanical equipment: pressure, temperature and humidity, flow rate, leakage, lubrication condition, abnormal noises, vibration, wear, cracks (breakage), looseness, aging, and information. The twelve key factors for inspecting electrical metering equipment: temperature, humidity, dust, insulation, aging, abnormal noises, unusual odors, oxidation, loosening, current, voltage, and interference sources. PART.03 Images: Inspection Steps. Image 1: Prepare the content for inspecting this component based on its five key features. 2. Develop the content for periodic maintenance tasks, including cleaning, tightening, adjustment, disassembly inspection, replacement of parts, and repair using recycled components. 3. Details of precise inspections, such as vibration measurement, flaw detection, infrared testing, etc. PART.04 Images: Inspection Status. The image inspection standards are classified into three device statuses based on whether a shutdown for inspection is required: shutdown, in operation, and unrestricted. Shutdown inspection: This refers to inspections carried out when the equipment is stopped. Shutdown inspections include static inspection items such as wear, looseness, cracks (corrosion), etc ； It also includes disassembly inspection, cleaning, tightening, etc., during equipment maintenance. Operation inspection: This refers to the inspection of equipment while it is in operation, such as pressure, flow rate, temperature, leaks, abnormal noises, vibrations, and oil supply conditions ； Unrestricted: refers to inspection items that can be checked either when the machine is stopped or when it is at rest. PART.05 Images: Classification of Inspection Standards Images 1. Inspection standards serve as the basis for assessing or determining whether an inspection area is in good condition; they are divided into qualitative standards and quantitative standards ； 2. The versatility of equipment is divided into general inspection standards and specialized inspection standards ； 3. The inspection cycles are divided into daily inspection standards and regular inspection standards.