Tap any failure mode → flip to its on-site guidance (pure-CSS, no JS needed on mobile)
Variable Frequency Drive (VFD)Variable Frequency Drive (VFD)
⚠ ⚠ Top risk: 冷却风扇失效 · RPN 96 (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
10Standards
3Real Accidents
Tap any failure mode to flip to its on-site guidance
Device-level standard/accident index (10 standards / 3 accidents)
Standards (10 de-duplicated)
  • IEC 61800-5-1
  • IEEE 841
  • IEC 61800-3
  • IEC 60034
  • API 541
  • IEC 60146
  • IEC 60747
  • IEC 60529
  • IEC 61800-7
  • IEC 61158
Accident Lessons (3 de-duplicated)
NUREG-IN-94-51NRC1994 ↗
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
NUREG-LER-2006-004-FERMI2NRC2006 ↗
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
NUREG-LER-2021-001-00-GINNUREG2021 ↗
R.E. Ginna 辅助给水泵绕组失效（LER 2021-001-00）
FM Traceability Cards (14)
Generated by Reliability AI
冷却风扇失效RPN 96 · High
Failure Mechanism
风扇轴承卡滞或绕组开路，风冷流量不足
How to Detect
Online monitoring · Detection rate 85% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 风扇转速/风压监测
  • 定期润滑/更换
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 61800-5-1
  • IEEE 841
Lessons Learned (3)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
NUREG-LER-2021-001-00-GINNUREG2021Operational
R.E. Ginna 辅助给水泵绕组失效（LER 2021-001-00）
Root cause: 辅助给水泵电机绕组失效
Official source ↗
共模电压致电机轴承电蚀（轴电流）RPN 96 · High
Failure Mechanism
PWM 高频 dv/dt 与共模电压经杂散电容耦合在电机轴产生轴电压，击穿油膜放电
How to Detect
Online monitoring · Detection rate 70% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 轴电压/轴电流监测
  • 共模电抗器/屏蔽电缆
  • 轴承绝缘治理
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 (3)
  • IEC 61800-3
  • IEC 60034
  • API 541
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
控制板/固件死机复位RPN 84 · High
Failure Mechanism
EMI/电源扰动/看门狗失效致 MCU 程序跑飞或复位
How to Detect
Online monitoring · Detection rate 60% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 控制板自诊断日志
  • 固件版本管理/看门狗测试
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 (2)
  • IEC 61800-3
  • IEC 61800-5-1
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
直流母线电解电容老化RPN 72 · High
Failure Mechanism
纹波电流热应力致电解液蒸发干涸，容值下降/ESR 上升
How to Detect
Online monitoring · Detection rate 70% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 直流母线纹波/ESR 在线监测
  • 电容容值趋势管理
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 61800-5-1
  • IEC 60146
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
散热器热阻升高（积灰/导热硅脂老化）RPN 72 · High
Failure Mechanism
散热器表面积灰或导热界面材料老化，热阻 Rθ 上升
How to Detect
Online monitoring · Detection rate 70% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 散热片温度监测
  • 定期清灰/更换导热硅脂
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 61800-5-1
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
IGBT 功率模块失效RPN 63 · High
Failure Mechanism
过流/过温/电压尖峰致结温超限，键合线疲劳脱落或芯片烧毁
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 在线驱动温度/电流趋势
  • IGBT 结温模型预警
  • 备用模块轮换
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 (4)
  • IEC 61800-5-1
  • IEC 61800-3
  • IEC 60146
  • IEC 60747
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
参数漂移/误整定误跳车RPN 60 · Medium
Failure Mechanism
设定参数漂移或整定不当，保护阈值误触发
How to Detect
Inspection/offline · Detection rate 50% ；Interval by RBI
Mitigation (What to Do)
  • 参数版本管理/定值复核
  • 趋势比对
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 61800-5-1
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
接地故障检测误动/拒动RPN 60 · Medium
Failure Mechanism
漏电流检测受共模干扰误动，或剩余电流器件老化拒动
How to Detect
Online monitoring · Detection rate 60% ；Interval by RBI
Mitigation (What to Do)
  • 保护功能定期测试
  • 剩余电流器件校验
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 61800-5-1
  • IEC 61800-3
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
柜体环境腐蚀/凝露RPN 60 · Medium
Failure Mechanism
防护等级不足或密封老化致潮气/盐雾侵入，PCB 腐蚀爬电
How to Detect
Inspection/offline · Detection rate 50% ；Interval by RBI
Mitigation (What to Do)
  • 柜内温湿度/凝露监测
  • 密封与防护等级检查
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 61800-5-1
  • IEC 60529
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
输入整流桥二极管失效RPN 54 · High
Failure Mechanism
输入浪涌/反向电压击穿或热疲劳
How to Detect
Online monitoring · Detection rate 70% ；Interval by RBI
Mitigation (What to Do)
  • 输入侧电流/电压监测
  • 浪涌防护检查
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 60146
  • IEC 60747
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
输出侧电缆/绕组绝缘因 dv/dt 退化RPN 54 · High
Failure Mechanism
长电缆分布参数与 PWM 陡前沿 dv/dt 引起反射过电压，绝缘局部放电老化
How to Detect
Online monitoring · Detection rate 65% ；Interval by RBI
Mitigation (What to Do)
  • 局部放电监测
  • 电缆绝缘诊断
  • 输出电抗器配置
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 61800-3
  • IEC 60034
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
直流母线过压（再生能量未泄放）RPN 42 · High
Failure Mechanism
负载制动再生能量使母线电压超过耐受，制动单元/电阻失效
How to Detect
Online monitoring · Detection rate 75% ；Interval by RBI
Mitigation (What to Do)
  • 母线电压监测
  • 制动单元功能测试
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 (2)
  • IEC 61800-5-1
  • IEC 61800-3
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
与 DCS/SIS 通讯中断RPN 42 · High
Failure Mechanism
现场总线/光纤链路中断或协议超时
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 通讯健康诊断/链路冗余
  • 协议超时监测
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 (2)
  • IEC 61800-7
  • IEC 61158
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
Official source ↗
NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗
预充电电路失效RPN 36 · High
Failure Mechanism
预充电电阻/继电器失效，上电浪涌击穿整流桥
How to Detect
Online monitoring · Detection rate 60% ；Interval by RBI
Mitigation (What to Do)
  • 预充电继电器/电阻状态监测
  • 上电时序测试
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 61800-5-1
  • IEC 60146
Lessons Learned (2)
NUREG-IN-94-51NRC1994Operational
NRC 信息公告 94-51：双密封电机轴承不当加脂导致启动失败（1994，North Anna）
Root cause: 双密封轴承本不需加脂，但自 1986 年起每 18 个月加脂，旧脂充满轴承腔；低温下脂硬化致启动负载异常升高
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NUREG-LER-2006-004-FERMI2NRC2006Operational
Fermi 2 应急柴油发电机(EDG)因控制电源变压器选型偏小整体不可用（2006）
Root cause: 1998 年 MCC 改造设计错误，未核算替换接触器涌流对控制电源变压器选型的影响；Extent-of-condition 还发现 EDG 机房通风风机同隐患
Official source ↗