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Equipment B-201A
FM fm
ISO 14224 mode LOO Low output
Source OPC Ontology KB
Dust Accumulation / Fouling -> Imbalance
B-201A · Fan / Blower
Related equipment → B-201A
0.75Source conf.
0.80Evidence conf.
LOOISO 14224 mode
1Failure Mechanism
Function:实现设备功能
Failure cause:进气过滤不足；介质含尘；运行环境潮湿
2Source Basis (where this FM comes from)
OPC Ontology KBCSB Accident DBQuant benchmark
Source confidence 0.75: 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.：0.8 · Evidence source：Industry consensus
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 1 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
API 580GB/T 7826-2012ISO 14224:2016SAE JA1011_202411
Standard clause references (15):
GB/T 7826-2012GB/T 27921-2011GB/T 44958-2024GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 754API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
5/5/3FMEA Sev/Occ/Det
0.34RBI λ
0.8Monitor pdet
4 月Insp. int.
Current tasks:每运行3000小时停机清理叶轮表面积灰和结垢 | 每周监测振动速度有效值，当超过4.5mm/s时安排动平衡校正 | 每月检查进气过滤器，确保过滤效率不低于99%
RCFA incident:B-201A 发生积灰/结垢→不平衡，严重程度 5，后果类型 Operational
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task按压差/效率监测设定清洗周期 + 过滤/防堵维护; 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=fouling; vibration
Governing standardsAPI 571API 670API 684ISO 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。