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Switchgear / Circuit BreakerSwitchgear / Circuit Breaker
⚠ ⚠ Top risk: 局部放电 · RPN 140 (High) — watch this one first at the equipment
Risk Board (all 14 · by RPN · top 6 highlighted urgent)
Shield: Safety = people/environment　Production = production only
Technical mechanism/mitigation body in Chinese (red line: no fabricated MT; EN UI labels translated)
14Failure Modes
11High/Critical
5Standards
2Real Accidents
Tap any failure mode to flip to its on-site guidance
Device-level standard/accident index (5 standards / 2 accidents)
Standards (5 de-duplicated)
  • IEC 62271-1
  • IEC 62271-200
  • NFPA 70B
  • IEC 60079-14
  • IEC 62271-203
Accident Lessons (2 de-duplicated)
NUREG-LER-1997-032-INDIANPOINT3NRC1997 ↗
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
NUREG-LER-1998-002-BROWNSFERRYNRC1998 ↗
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
FM Traceability Cards (14)
Generated by Reliability AI
局部放电RPN 140 · High
Failure Mechanism
绝缘内部气隙/沿面放电加速绝缘劣化
How to Detect
Online monitoring · Detection rate 75% ；Re-inspect ≤every12months
Mitigation (What to Do)
  • 在线局放监测
  • 耐压试验
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 62271-1
  • IEC 62271-200
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
断路器拒动RPN 120 · Critical
Failure Mechanism
保护动作时操动机构/脱扣线圈失效未能断开故障电流
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every12months
Mitigation (What to Do)
  • 保护定值校核
  • 操动机构特性测试
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (3)
  • IEC 62271-1
  • IEC 62271-200
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
绝缘老化RPN 120 · High
Failure Mechanism
受潮/污秽致整体绝缘水平下降
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every12months
Mitigation (What to Do)
  • 绝缘电阻测试
  • 环境除湿
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • IEC 62271-1
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
危险区域RPN 105 · High
Failure Mechanism
防爆区域外壳腐蚀失爆
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 外壳防腐检查
  • 气密性试验
RCM Strategy
CBMOn-Condition Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • IEC 60079-14
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
母排连接点过热RPN 96 · High
Failure Mechanism
螺栓松动/接触电阻增大致连接点发热劣化
How to Detect
Online monitoring · Detection rate 70% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 红外测温巡检
  • 力矩复紧
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 62271-200
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
内部电弧故障RPN 90 · Critical
Failure Mechanism
绝缘破坏引发内部电弧闪络，释放巨大能量
How to Detect
Online monitoring · Detection rate 80% · Hidden · visible only at shutdown ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 电弧防护评估
  • 快速保护配置
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 62271-200
  • IEC 62271-203
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
接地/二次回路接地不良RPN 90 · High
Failure Mechanism
外壳或二次回路接地不良致电位异常
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 接地电阻测试
RCM Strategy
CBMOn-Condition Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 60079-14
  • IEC 62271-1
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
断路器误动跳RPN 84 · High
Failure Mechanism
无故障情况下误发分闸指令致非计划停车
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 二次回路绝缘检查
  • 逻辑防误校验
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 62271-1
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
操动机构卡涩RPN 84 · High
Failure Mechanism
弹簧/液压机构锈蚀或润滑失效卡滞
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 机构润滑维护
  • 最低动作电压测试
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • IEC 62271-1
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
控制电源丧失RPN 84 · High
Failure Mechanism
控制/储能回路失电致无法分合闸
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 双路控制电源
  • 蓄电池巡检
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
电流互感器/电压互感器故障RPN 75 · Medium
Failure Mechanism
绝缘击穿或变比失准致保护误动/拒动
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 二次回路校验
  • 绝缘监测
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • IEC 62271-200
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
在线测温装置失效RPN 75 · Medium
Failure Mechanism
无线测温模块故障致过热不可见
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 测温模块校准
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
通信中断RPN 75 · Medium
Failure Mechanism
综保通信模块掉线致失去远方监视
How to Detect
Online monitoring · Detection rate 80% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 通信冗余
  • 模块巡检
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (1)
  • IEC 62271-1
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗
保护装置失效RPN 64 · Critical
Failure Mechanism
综保继电器元件老化或软件故障致保护失效
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 保护功能测试
  • 固件版本管理
RCM Strategy
PMScheduled (Proactive) Maintenance
Interval: High risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Engineering-inferred (not measured history); confirm with equipment owner before execution
Standards (2)
  • IEC 62271-1
  • NFPA 70B
Lessons Learned (2)
NUREG-LER-1997-032-INDIANPOINT3NRC1997Operational
Indian Point 3 号机 480V 安全母线因 RHR 泵断路器拒动而不可用（1997）
Root cause: 断路器机构关键枢轴连接缺乏润滑导致卡涩拒动；同类 DS-416 断路器存在潜在共因退化
Official source ↗
NUREG-LER-1998-002-BROWNSFERRYNRC1998Operational
Browns Ferry 3 号机 480V 停役盘备用馈线断路器拒合导致母线瞬时失电（1998）
Root cause: 断路器位置开关联动触点被一根错位导线干扰无法正常闭合；根本因为导线布线不当及开关盖板拆装错误
Official source ↗