Tap any failure mode → flip to its on-site guidance (pure-CSS, no JS needed on mobile)
Electric Motor (Driver)Electric Motor (Driver)
⚠ ⚠ Top risk: 轴承内圈缺陷 · RPN 96 (High) — watch this one first at the equipment
Risk Board (all 16 · 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)
16Failure Modes
8High/Critical
9Standards
3Real Accidents
Tap any failure mode to flip to its on-site guidance
Device-level standard/accident index (9 standards / 3 accidents)
Standards (9 de-duplicated)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
  • IEC 60034
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）
2004-08-I-NMcsb2004 ↗
Giant Ciniza Refinery Alkylation Reflux Pump Seal Failure Explosion
FM Traceability Cards (16)
Generated by Reliability AI
轴承内圈缺陷RPN 96 · High
Failure Mechanism
循环载荷 + 内部缺陷萌生疲劳裂纹
How to Detect
Online monitoring · Detection rate 90% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 振动频谱监测（BPFO 边带）
  • 定期润滑油铁谱分析
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
轴承外圈缺陷RPN 96 · High
Failure Mechanism
壳体配合松动或外圈滚道疲劳
How to Detect
Online monitoring · Detection rate 90% ；Re-inspect ≤every24months
Mitigation (What to Do)
  • 振动包络解调监测
  • 听诊/温度趋势
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
润滑脂劣化RPN 64 · Medium
Failure Mechanism
高温氧化/老化导致稠度下降
How to Detect
Online monitoring · Detection rate 85% ；Interval by RBI
Mitigation (What to Do)
  • 定期补脂
  • 润滑脂取样分析
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
轴封泄漏RPN 64 · Medium
Failure Mechanism
密封磨损或装配不当
How to Detect
Inspection/offline · Detection rate 60% ；Interval by RBI
Mitigation (What to Do)
  • 目视检漏
  • 密封腔压力监测
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
Lessons Learned (1)
2004-08-I-NMcsb2004Injuries 6 · Safety
Giant Ciniza Refinery Alkylation Reflux Pump Seal Failure Explosion
Root cause: Missing pump/compressor mechanical integrity + repeated seal failures not root-caused + inadequate isolation / pressure-relief procedure (missing MOC).
Official source ↗
定子绕组绝缘老化RPN 63 · High
Failure Mechanism
热应力 + 电应力 + 潮湿导致绝缘劣化
How to Detect
Online monitoring · Detection rate 70% ；Interval by RBI
Mitigation (What to Do)
  • 绝缘电阻/极化指数测试
  • 在线局部放电监测
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 (9)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
  • 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 ↗
滚动体缺陷RPN 60 · Medium
Failure Mechanism
制造缺陷或润滑不良导致滚动体点蚀
How to Detect
Online monitoring · Detection rate 88% ；Interval by RBI
Mitigation (What to Do)
  • 振动阶次分析
  • 油液颗粒计数
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
转子不平衡RPN 60 · Medium
Failure Mechanism
积垢/磨损/部件脱落导致质心偏移
How to Detect
Online monitoring · Detection rate 92% ；Interval by RBI
Mitigation (What to Do)
  • 动平衡校验
  • 振动 1× 幅值趋势
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
润滑油污染RPN 60 · Medium
Failure Mechanism
密封失效或加注污染引入颗粒/水
How to Detect
Online monitoring · Detection rate 88% ；Interval by RBI
Mitigation (What to Do)
  • 油液颗粒度/水分分析
  • 磁性过滤器检查
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
转子断条RPN 56 · High
Failure Mechanism
启动电流热冲击 + 材料疲劳
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 启动电流谐波分析
  • 转子断条特征频率监测
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
轴不对中RPN 54 · High
Failure Mechanism
安装误差或热膨胀导致轴线偏移
How to Detect
Online monitoring · Detection rate 90% ；Interval by RBI
Mitigation (What to Do)
  • 激光对中
  • 振动 2× 谐波分析
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
接线盒端子松动RPN 54 · High
Failure Mechanism
热循环松动或安装力矩不足
How to Detect
Online monitoring · Detection rate 70% ；Interval by RBI
Mitigation (What to Do)
  • 红外热像巡检
  • 扭矩复核
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 (9)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
  • 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 ↗
定子绕组匝间短路RPN 48 · Critical
Failure Mechanism
绝缘弱点 + 过电压引发匝间击穿
How to Detect
Online monitoring · Detection rate 85% ；Interval by RBI
Mitigation (What to Do)
  • 在线 PD 监测
  • 对称电流不平衡报警
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 (9)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
  • 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 ↗
过热绝缘烧毁RPN 48 · Critical
Failure Mechanism
冷却失效或过载致温升超限
How to Detect
Online monitoring · Detection rate 75% ；Interval by RBI
Mitigation (What to Do)
  • 绕组温度 RTD 监测
  • 冷却风量检查
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 (9)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
  • 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 ↗
冷却风扇失效RPN 45 · Medium
Failure Mechanism
叶片断裂或轴承卡死
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 风量监测
  • 风扇轴承振动
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
基础松动振动大RPN 45 · Medium
Failure Mechanism
地脚螺栓松动或基础裂纹
How to Detect
Online monitoring · Detection rate 90% ；Interval by RBI
Mitigation (What to Do)
  • 基础振动模态测试
  • 地脚扭矩检查
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗
轴电流电蚀RPN 40 · Medium
Failure Mechanism
变频驱动共模电压经轴承放电
How to Detect
Online monitoring · Detection rate 80% ；Interval by RBI
Mitigation (What to Do)
  • 轴接地碳刷/绝缘轴承
  • 共模电压滤波
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 (8)
  • API 541
  • IEEE 841
  • ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment
  • GB/T 6075
  • ISO 13372 — Condition monitoring and diagnostics of machines — Vocabulary
  • API 580 — Risk-Based Inspection
  • GB/T 7826-2012
  • SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
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 ↗