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Equipment H-101
FM fan_imbalance
ISO 14224 mode OTH Other
Source OPC Ontology KB
叶轮积灰→不平衡 (Fan Imbalance)
H-101 · fired_heater
Related equipment → H-101
0.82Source conf.
0.70Evidence conf.
OTHISO 14224 mode
1Failure Mechanism
Function:抽出烟气维持炉膛负压
Failure cause:燃料或燃烧不充分产生大量粉尘；烟气速度低导致粉尘沉降；缺乏定期清灰措施
Damage mechanism：叶轮积灰不平衡（fan imbalance from dust accumulation）+ 振动
2Source Basis (where this FM comes from)
OPC Ontology KBCSB Accident DBQuant benchmark
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·CSB Accident DB·Quant benchmark.
3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.7 · Evidence source：engineering_estimate
Governing standards (evidence)：std:API-537 — API 537 — Centrifugal Fans for Refinery Service · 炼油用离心风机std:API-571 — API 571 — Damage Mechanisms Affecting Fixed Equipment · 损伤机理归类框架
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 580GB/T 11348GB/T 6075GB/T 7826-2012ISO 13372ISO 13374ISO 14224:2016ISO 17359SAE JA1011_202411
Standard clause references (22):
GB/T 7826-2012GB/T 27921-2011GB/T 36894-2018GB/T 44958-2024GB/T 37243-2019GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 510API 570API 571API 579-1/ASME FFS-1API 754API 576API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
7/4/4FMEA Sev/Occ/Det
0.34RBI λ
0.8Monitor pdet
4 月Insp. int.
Current tasks:监测风机振动值 | 检查叶轮积灰情况 | 清理叶轮积灰并做动平衡
RCFA incident:H-101 发生叶轮积灰→不平衡 (Fan Imbalance)，严重程度 7，后果类型 Safety
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; 沉降/变形观测 + 支撑/基础评估; 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=deformation; electrical; fouling; vibration
Governing standardsAPI 571API 579API 653API 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。