湖北特检院黄石分院以“硬核”技术实力护航企业安全生产

Core Insights - The inspection by Hubei Special Inspection Institute's Huangshi branch successfully identified safety hazards in a steel plant's heat storage device, which had exceeded its design lifespan of 10 years, thus ensuring safe production for the enterprise [1][2] Group 1: Inspection Findings - The heat storage device has a volume of 150 cubic meters and was put into operation in July 2011, with a design pressure of 2.65 MPa and a design temperature of 250 degrees Celsius [1] - The inspection revealed fatigue cracks in the circumferential welds between the internal supports and pads, caused by alternating stress from thermal expansion and contraction during operation [1] - Additional issues included multiple mechanical damages on the inner wall of the container and several leaks in the heat exchange tubes, all of which posed significant safety risks [1] Group 2: Remedial Actions - Inspectors communicated with the enterprise's technical head to analyze the defects and develop a scientific rectification plan [2] - The remediation involved grinding and welding the fatigue cracks, followed by magnetic particle testing to ensure weld quality, as well as professional grinding of mechanical damage and individual welding of leaking heat exchange tubes [2] - All defects were rectified according to regulations, and subsequent inspections confirmed that the equipment met safety operation standards, successfully eliminating the safety hazards [2] Group 3: Future Directions - The Huangshi branch emphasizes the importance of special equipment safety, focusing on inspections of aging and high-risk equipment [2] - The institute aims to enhance technical services for key enterprises and high-risk devices, leveraging professional expertise to support safe production and strengthen the safety framework for special equipment in the region [2]