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Equipment TX-101
FM noise_vibration_abnormal
ISO 14224 mode Abnormal noise / vibration Abnormal noise / vibration
Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
异常噪声/振动（铁芯松动）
TX-101 · Power Transformer
Related equipment → TX-101
0.82Source conf.
—Evidence conf.
Abnormal noise / vibrationISO 14224 mode
1Failure Mechanism
Function:结构稳定
Failure cause:铁芯夹紧件松动或叠片松动，电磁力引发异常振动
Damage mechanism：铁芯夹紧件松动或叠片松动，电磁力引发异常振动噪声，长期致叠片疲劳
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类).
3Evidence Chain (supporting basis)
This FM has no offline curated evidence text; it is derived from the ontology KB and cross-validated by the listed standard clauses and related accident investigations.
Governing standards (evidence)：std:IEC 60076 — Power transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处std:IEEE C57.12.90 — IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 2 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
IEC 60076IEEE C57.12.90
No separate clause reference.
6Derived Analysis (seeded from this FM)
4/3/4FMEA Sev/Occ/Det
0.04RBI λ
0.7Monitor pdet
12 月Insp. int.
Current tasks:振动/噪声频谱监测 | 夹紧件紧固检查
RCFA incident:异常噪声/振动（铁芯松动）：铁芯夹紧件松动或叠片松动，电磁力引发异常振动，后果类型 Operational，严重度 4
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task无损检测(UT/MT/PT) 监测裂纹萌生, 关键转动件定时拆检; 振动频谱分析 + 动平衡 + 激光对中, 状态监测趋势管理
Suggested intervalHigh risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Decision basis机理类别=fatigue; vibration
Governing standardsAPI 579API 612API 670API 684ASME VIIIISO 10816
⚠ This decision is engineering-inferred by RCM logic from the damage mechanism / root cause / failure cause — it is not derived from measured site history. Confirm with the equipment owner and process before execution.
⚠ 本卡技术正文（功能 / 致因 / 损伤机理 / RCFA 叙事）保留中文原文——依可信 AI 红线，自由技术文本不自动机翻、不编造英文译文。UI、设备类型、FM 名、ISO 码、标准号均为英文。