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Equipment MOT-101
FM vibration_excessive_foundation
ISO 14224 mode Foundation looseness Foundation looseness
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
基础松动振动大
MOT-101 · Electric Motor (Driver)
Related equipment → MOT-101
0.82Source conf.
—Evidence conf.
Foundation loosenessISO 14224 mode
1Failure Mechanism
Function:固定并支撑机组
Failure cause:地脚螺栓松动或基础裂纹
Damage mechanism：支撑刚度下降，固有频率偏移诱发共振放大
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 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 / API / IEC 61511 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:GB/T 6075 — 机械振动—在非旋转部件上测量评价机器的振动 · 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
API 541IEEE 841ISO 14224:2016GB/T 6075ISO 13372API 580GB/T 7826-2012SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/3/3FMEA Sev/Occ/Det
0.17RBI λ
0.9Monitor pdet
6 月Insp. int.
Current tasks:基础振动模态测试 | 地脚扭矩检查
RCFA incident:基础松动振动大：地脚螺栓松动或基础裂纹，后果类型 Operational，严重度 5
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task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=vibration
Governing standardsAPI 670API 684ISO 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。