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Equipment SC-101
FM vibration_high_unbalance
ISO 14224 mode Screw unbalance Screw unbalance
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
振动高（不平衡）
SC-101 · Screw Compressor
Related equipment → SC-101
0.82Source conf.
—Evidence conf.
Screw unbalanceISO 14224 mode
1Failure Mechanism
Function:平稳旋转
Failure cause:积垢/转子磨损
Damage mechanism：质量不平衡诱发 1× 振动（ISO 1940/GB-T 6075）
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 3 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
API 619API 617ISO 14224:2016GB/T 6075ISO 13372API 580API 571GB/T 7826-2012SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/4/3FMEA Sev/Occ/Det
0.24RBI λ
0.9Monitor pdet
6 月Insp. int.
Current tasks:动平衡 | 振动 1× 趋势
RCFA incident:振动高（不平衡）：积垢/转子磨损，后果类型 Operational，严重度 5
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试; 振动频谱分析 + 动平衡 + 激光对中, 状态监测趋势管理; 按压差/效率监测设定清洗周期 + 过滤/防堵维护
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=electrical; fouling; vibration
Governing standardsAPI 571API 670API 684GB/T 14285IEC 60034IEEE C57ISO 10816厂家规范
⚠ 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。