rcca(c)根因分析精编版.ppt

… * … * … * … * … * … * … * … * … * … * … * … * … * There are two memorials that are near each other in Washington: the Lincoln Memorial and the Jefferson Memorial. They contain covered statues of Lincoln and Jefferson respectively and are open to the air and the public. As it happens, a problem arose with the Jefferson Memorial but not the Lincoln Memorial. Birds would flock to the Jefferson Memorial, land on the statue and soil it. It would rapidly get dirty and would often need cleaning. Unfortunately, the required cleaning method involved blasting the statue and it was gradually eroding. The curators foresaw that in the near future the statue’s features would start to become flat. They had to do something! 1- Problem statement: ____________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 2- What would you recommend? ___________________________________________ ______________________________________________________________________ ______________________________________________________________________ ? 2002 Pratt Whitney CanadaAll rights reserved … * This is definitely the best solution!!! 6. To choose the appropriate corrective action 选择适当的纠正行动 Prototype 原形 Test 测试 Is the solution mistake-proofed是否防错的解决方法? Try-storm 尝试风暴 Nasty test 错误测试 Tools工具: Statistical Process Control统计过程 控制 Steps of RCCA Validate the potential solutions 验证潜在的解决方案 ? 2002 Pratt Whitney CanadaAll rights reserved … * 6. 根源是否可以控制? 是! 能否再问一次 “为什么?” 获取另一个可控根源？ 否! 确定的根源是否为过程失败的基本原因？ 是! 如果我们纠正/改进我们确定的根本原因，能否保证确定的问题 不再发生？ 是! 是否检查过我们确定的根源适合于多个零件/过程？ 是! Steps of RCCA Validate the potential solutions 确认潜在解决方案 Is the root cause controllable? Yes! Can we ask “why?” one more time and get another controllable root cause? No! Is the identified root cause the fundamental breakdown or failure of the process? Yes! If we