Core Insights - The "Online Preventive Maintenance of Safety Instruments in Petrochemical Industry" project by Yan'an Refinery of Yanchang Petroleum won the second prize at the 2025 National Equipment Management and Technological Innovation Achievement Exchange Conference, highlighting advancements in safety instrument management [1][3] Group 1: Project Overview - The project addresses pain points in safety instrument management within the petrochemical sector, moving away from traditional management models [1] - It establishes a comprehensive preventive maintenance management system for safety instruments, optimizing and upgrading safety instrument management [1] Group 2: Implementation and Results - Since the implementation of the preventive maintenance system, Yan'an Refinery has inspected 240 level switches and 529 interlock instruments, identifying and resolving over 100 potential issues [3] - In 2024, the company achieved zero incidents of production fluctuations or unplanned shutdowns caused by instrument malfunctions, significantly reducing maintenance costs [3]