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Equipment BL-201A
FM fm_11
ISO 14224 mode OTH Other
Source OPC Ontology KB
Cavitation
BL-201A · Boiler
Related equipment → BL-201A
0.82Source conf.
0.80Evidence conf.
OTHISO 14224 mode
1Failure Mechanism
Function:实现设备功能
Failure cause:入口过滤器堵塞导致吸入阻力增大；液位过低或入口管路设计不合理；液体温度过高接近沸点
Damage mechanism：给水泵汽蚀（cavitation, NPSH 不足）：入口过滤堵塞/液位低/介质近沸点
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：Failure of a Bronze Pump Impeller by Cavitation Damage (2019); Cavitation Erosion of a Zirconium Pump Impeller (2019)
Evidence ref code：S2:f7ceee063488d922
Evidence conf.：0.8 · Evidence source：Industry consensus
⚠ The evidence ref code S2:f7ceee063488d922 is an internal index code of this KB, for tracing back to the offline curated corpus; it is not a public doi.org link, hence no hyperlink is provided.
Governing standards (evidence)：std:API-571 — API 571 — Damage Mechanisms Affecting Fixed Equipment · 损伤机理归类框架std:ASME-BPVC-I — ASME BPVC Section I — Rules for Construction of Power Boilers · 锅筒/受热面建造与检验规则（PG-19 等）
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 580GB/T 7826-2012ISO 14224:2016SAE JA1011_202411
Standard clause references (19):
GB/T 7826-2012GB/T 27921-2011GB/T 44958-2024GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 510API 571API 579-1/ASME FFS-1API 754API 576API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
6/4/3FMEA Sev/Occ/Det
0.34RBI λ
0.8Monitor pdet
4 月Insp. int.
Current tasks:每日监测泵入口压力是否低于汽蚀余量 | 每周听泵体是否有异常噪音和振动 | 每半年检查叶轮表面是否有麻点或蜂窝状腐蚀
RCFA incident:BL-201A 发生汽蚀，严重程度 6，后果类型 Safety
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task入口压力/温度监测 + 叶轮表面蚀坑检查, 优化 NPSH 工况; 按压差/效率监测设定清洗周期 + 过滤/防堵维护; 温度/红外热成像监测, 超温报警与根因排查; 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=cavitation; fouling; overheat; vibration
Governing standardsAPI 530API 571API 610API 617API 670API 682API 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。