Proper maintenance ensures safety: Comprehensive guide for the maintenance of pressure-opening equipmentThe pressure-bearing hole opening technology, as an advanced process that enables construction without interrupting the medium transportation in pipelines, has become an indispensable key technology for pipeline maintenance and renovation in the petroleum, chemical, and gas industries. This technology avoids the huge economic losses and environmental pollution caused by traditional operations that require full-line shutdown and medium discharge, achieving dual guarantees of safety and efficiency. However, the pressure-bearing hole opening operation itself is a mechanical cutting carried out in a sealed and high-pressure environment, belonging to a special-level hot work operation, which has high risks. Its success directly relates to personnel safety and the stability of the production system. The high reliability of the equipment forms the foundation of all these safety prerequisites. A pressure-bearing hole opening machine with intact performance and stable operation is the key to successfully carrying out "zero leakage" operations. Unlike ordinary equipment, the pressure-bearing hole opening equipment undergoes multiple tests during each operation, including internal pressure of the pipeline, medium corrosion, and mechanical cutting. Any minor fault or performance decline could lead to serious consequences. Therefore, establishing a scientific, systematic, and thorough equipment maintenance system is not a simple routine task; rather, it is the lifeline that ensures the safety, efficiency, and success of each operation. This article will provide you with a detailed interpretation of the entire maintenance process of the pressure-bearing hole opening equipment. I. Foundation of Maintenance: Personnel Quality and Standardized Management Excellent equipment performance begins with excellent management. Before delving into specific maintenance techniques, it is essential to establish the guarantee of "people" and "systems" first. The "three excellences and four skills" principle for operators The primary person responsible for equipment maintenance is the operator. The "three excellences and four skills" principle advocated by the industry is the basic professional quality that every operator should possess. "Three excellences" mean "managing well, using well, and repairing well". Operators must manage the equipment they use properly, operate according to the procedures; strictly abide by the regulations, avoid overloading and using the equipment rudely; at the same time, they should possess the initial ability to diagnose faults and resolve minor problems. "Four Skills" refer to "being able to use, maintain, inspect and troubleshoot". This means one needs to be familiar with the structure and performance of the equipment, master the operation procedures; be capable of performing daily cleaning, lubrication and other maintenance tasks; be able to identify abnormal sounds, temperature rises and other conditions of the equipment; and be able to handle common and typical faults. 2. Establish an archive for equipment operation and maintenance The implementation of "preventive maintenance" cannot be achieved without data support. It is crucial to establish an independent "Equipment Operation Record" file for each device. This file should systematically record: · Daily operation parameters: Key data such as pressure and rotational speed for each operation. · Maintenance Log: Record in detail the date, items, replaced components (such as seals), and lubricating oil type for each maintenance. · Fault Repair Record: Information regarding the occurrence of any faults, the cause analysis, the handling methods, and the replacement parts. Through long-term data accumulation, the performance decay cycle of the equipment and the lifespan patterns of the vulnerable components can be analyzed. This enables the maintenance process to be upgraded from "regular" to more scientific "predictive" maintenance, effectively reducing the risk of unplanned downtime. II. Core Component Maintenance Grading System: Schedule, Key Points and Standards The maintenance of the pressure-bearing hole-opening machine should be carried out on a graded and periodic basis according to the frequency of operations and the criticality of components. The following are key maintenance guidelines based on the general structure of the equipment. Classification and Maintenance Cycle of Pressure-Resistant Opening Equipment and Key Points Maintenance level: Daily maintenance (after each operation) Core Components and Key Points · Exterior of the body: Thoroughly clean off any oil stains, cutting debris and environmental dirt from the exterior to maintain a clean appearance. · Drive shaft / boring bar: Fully extended and cleaned. Check for any scratches or bends. After cleaning, apply anti-rust oil and install a special protective cap on the extended part of the shaft. Store it in a dedicated transport box. · Drilling tool: Carefully inspect the teeth to ensure they are intact, sharp, and free from cracks or excessive wear; clean and store properly after use. · Sealing inspection: Conduct a visual inspection to check for any leakage traces at all static sealing surfaces (such as the connection points with the valve) and at the moving sealing areas. Maintenance level: Regular maintenance (every quarter or after 30 operations) Core Components and Key Points · Gearbox: Check the quality and quantity of the gear lubricating oil. Based on the operating conditions, replace the dedicated EP-grade extreme pressure gear lubricating oil every 3 to 6 months or at least once a year to prevent lubrication failure due to condensation water and dust accumulation. · Internal component lubrication: Partially disassemble the equipment, clean and re-lubricate all the moving parts of the transmission mechanisms such as the crank handle and connecting rods. · Fastener inspection: Inspect and tighten all bolts and screws connections to prevent loosening due to vibration. Maintenance level: Deep maintenance (every six months or after special conditions) Core Components and Key Points