Gearbox (Speed Reducer/Increaser)Gearbox (Speed Reducer/Increaser)
⚠ ⚠ Top risk: Gear-tooth Pitting · 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
7High/Critical
10Standards
2Real Accidents
Tap any failure mode to flip to its on-site guidance
Device-level standard/accident index (10 standards / 2 accidents)
Standards (10 de-duplicated)
API 677ISO 6336AGMA 2001ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipmentGB/T 3480GB/T 6075ISO 13372 — Condition monitoring and diagnostics of machines — VocabularyAPI 580 — Risk-Based InspectionGB/T 7826-2012SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
Accident Lessons (2 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)
FM Traceability Cards (14)
Gear-tooth PittingRPN 96 · High
Failure Mechanism
接触疲劳在齿面萌生微裂纹
How to Detect
Online monitoring · Detection rate 90% ;Re-inspect ≤every24months
Mitigation (What to Do)
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 (10)
API 677ISO 6336AGMA 2001ISO 14224:2016 — Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipmentGB/T 3480GB/T 6075ISO 13372 — Condition monitoring and diagnostics of machines — VocabularyAPI 580 — Risk-Based InspectionGB/T 7826-2012SAE JA1011_202411 — Evaluation Criteria for Reliability-Centered Maintenance Processes
Lessons Learned (2)
NUREG-IN-94-51NRC1994OperationalNRC 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-FERMI2NRC2006OperationalFermi 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 ↗