http://www.esafety.cn/blog/wll/66030/index.html

安全生产事故案例分析习题(19)

作者[孙锡云] 发表于[2011-7-29 10:14:00]

安全生产事故案例分析习题(19)

  19921181442分左右,交通部上海海运管理局大庆62油轮在长江上海宝山水道石洞口电厂上游江面,发生因违章电焊引起油轮爆炸起火特大事故。有4名船员失踪,4名船员受伤,直接经济损失1000万元以上。大庆62油轮系19755月大连红旗船厂建造。船舶总长178.58 m,型宽25 m,型深12.60 m,总载重24208 t,主机6RND76/155柴油机一台,1200匹马力空船航速16节。船上共有船员45名,其中甲板部24名,轮机部21名。船长王某具有1600总吨以上A级适任证书,轮机长严某具有4080马力以上A类轮机长证书。

  该轮1992年第二航次载原油22000 t,于111日驶离大连;131840分抵达上海金山石化总厂陈山码头;巧日1220分卸毕原油驶离陈山;1522时锚泊昊松2号临时锚地等候补给;181114分,由供油10补上渣油200 t,巧时42分在驶经上海石洞电厂上游江面时,油轮爆炸起火。

  1181145分,该轮在吴淞2号临时锚地补充渣油200 t后,1430分许,启锚驶往杨林油污水处理站。途中为了做好洗舱准备,1135分左右,直接使用蒸气灭火管道向货油舱内施放压力为6 kg/cM2蒸汽进行蒸舱。蒸舱过程中,因发现机舱内蒸汽管道旁通阀右侧的旁通管被蒸汽压力冲穿一小洞(1.5 cm),于1455分关闭了蒸汽灭火管道的总阀门。停止供气后,为修复管道继续蒸舱,轮机长严某用一块7×7×0.3 cm的铁板覆盖在蒸汽管道被冲穿的洞口处,从右至左焊接。焊接至7 cm时,严某用剩余焊条清除焊接熔渣,发现焊接处又烧穿一个3~左右的小洞,严某即调换了一根电焊条直接对准小洞焊补,引起了管道至货油舱连续爆炸和燃烧。

  大庆62油轮爆炸起火后,舯楼前主甲板向船头方向炸开,甲板天桥、桅杆倒塌,钟楼严重烧损;舯楼后的两根桅杆严重向内倾斜;船体被炸变形、破裂,致使船舱进水,船舶下沉搁浅。事故中有4名船员受伤,4名船员失踪。初步估算,直接经济损失1000万元以上(不包括打捞等费用)

  一、单项选择题

  1.经论证分析,爆炸起火的原因是从停止供汽后到动火过了约有50 min,此时蒸气管道逐渐冷却,管道内蒸气消失并处于负压状态,油舱内的蒸气也随着温度下降而变成了水分。但舱内残留的油蒸气及蒸舱时蒸发出的油蒸气与空气混合形成了爆炸性气体,一部分气体倒人处于负压状态的蒸气管道内。当严某直接对孔洞焊补时,_与管道内的爆炸性气体接触,引起爆炸和燃烧。

  A.电焊机  B.电焊明火  C.焊条  D.空气

  2.这起事故中,轮机长严某_

  A.违章  B.技术不熟练  C.不懂焊接  D.应委派他人焊接

  二、多项选择题

  3.这起事故损失严重,影响很大,教训深刻。暴露出该轮_、船舶设备状况等方面存在着的问题。

  A.维修技术水平  B.安全管理  C.船员安全意识

  D.防火防爆知识的培训教育

  4.这起事故中,船员

  A.违反焊接操作程序  B.违反了无证人员不得从事电焊

  C.违反了动火审批制度  D.违反了电焊、气焊十不烧制度

  三、简答题

  5.轮机长严某烧焊期间,大副机匠长等人均在场,却无一人意识到在这种条件下烧焊是违章的,后果是危险的,没有人前去阻止。这说明了什么?

  6.油轮明火作业人员应严格执行什么制度?明火作业应履行什么程序?

  参考答案

  1.B  2.A  3.BCD  4.BCD

  5.企业安全教育不够深人,船员安全意识淡薄,思想麻痹,缺乏必要的消防安全知识。

  6.明火作业人员应严格执行持证上岗制度。明火作业应履行审批程序。

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作者[edtvy(游客)] 发表于[2016-10-12 19:51:40]
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原创

作者[原创(游客)] 发表于[2016-9-30 11:20:55]
原创(游客)http://rywydx.lofter.com/post/1e6a68e3_c8113e4 http://rywywj.lofter.com/post/1e6a80c3_c82446c http://rywywj.lofter.com/post/1e6a80c3_c8219da http://rywywj.lofter.com/post/1e6a80c3_c824319 http://rywywj.lofter.com/post/1e6a80c3_c822c95 http://rywkdks.lofter.com/post/1e698063_c7f6294 http://njryw168.lofter.com/post/1e6983e5_c7ee96e http://rywywj.lofter.com/post/1e6a80c3_c8232f4 http://rywywj.lofter.com/post/1e6a80c3_c824424 http://njryw168.lofter.com/post/1e6983e5_c7f1c77

原创

作者[原创(游客)] 发表于[2016-9-28 16:44:26]
原创(游客)http://ywjseo.lofter.com/post/1e634752_c650f43 http://wztgywj.lofter.com/post/1e65f473_c6edcb5 http://seogsywj.lofter.com/post/1e634756_c6de7af http://bjseoywj.lofter.com/post/1e66bf3e_c7106d6 http://wztgywj.lofter.com/post/1e65f473_c6ea1a1 http://bjseoywj.lofter.com/post/1e66bf3e_c71155d http://ywjseo.lofter.com/post/1e634752_c652d84 http://seogsywj.lofter.com/post/1e634756_c6ddd36 http://seogsywj.lofter.com/post/1e634756_c6ddc86 http://wztgywj.lofter.com/post/1e65f473_c6e9fdd

原创

作者[原创(游客)] 发表于[2016-9-6 17:08:56]
原创(游客)http://njryw2016.lofter.com/post/1e59a72f_c384a7e http://njryw2016.lofter.com/post/1e59a72f_c384a7d http://njryw2016.lofter.com/post/1e59a72f_c384a7c http://njryw2016.lofter.com/post/1e59a72f_c384a7b http://njryw2016.lofter.com/post/1e59a72f_c384a7a http://njryw2016.lofter.com/post/1e59a72f_c384a79 http://njryw2016.lofter.com/post/1e59a72f_c384a78 http://njryw2016.lofter.com/post/1e59a72f_c384a77 http://njryw2016.lofter.com/post/1e59a72f_c384a76 http://njryw2016.lofter.com/post/1e59a72f_c384a75
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