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1997年5月,某县某卫生学校一台 LHG0.3—0.39—A11型立式冲天管蒸气锅炉在停炉内外部检验时,发现锅炉冲天管表面,水位线上约200mm至水位线以下120mm范围内严重腐蚀减薄,经检验员检查。发现该区域已局部穿透。一、锅炉概况。该锅炉1996年2月制造,1996年4月投入运行,使用压力0.39MPa,间断运行,日运行时间约7小时,无水处理设施,锅炉原水为当地自来水。内外部检查结果显示:1、冲天管表面,水位线以上200mm至水位线以下120mm范围内,严重腐蚀,减薄。经检验锤敲
May 1997, a county health school a LHG0.3-0.39-A11 vertical overhead tube steam boiler in the shutdown of the internal and external inspection found that the surface of the sky, the water level of about 200mm to 120mm below the water line Severe corrosion within the thinning, the inspector check. The area was found partially penetrated. First, the boiler overview. The boiler was manufactured in February 1996, put into operation in April 1996, the use of pressure 0.39MPa, intermittent operation, the daily operation time of about 7 hours, anhydrous treatment facilities, the boiler raw water for local tap water. Internal and external inspection results show that: 1, the sky tube surface, water level above 200mm to 120mm water level below the line, serious corrosion, thinning. After hammer test