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Equipment BL-201A
FM fm
ISO 14224 mode STD Structural deficiency
Source OPC Ontology KB
Steam Drum Internal Corrosion
BL-201A · Boiler
Related equipment → BL-201A
0.82Source conf.
0.80Evidence conf.
STDISO 14224 mode
1Failure Mechanism
Function:实现设备功能
Failure cause:水质处理不当，溶解氧或pH值超标；停炉保护不当导致氧腐蚀；应力集中区域加速腐蚀
Damage mechanism：水侧氧腐蚀/酸性腐蚀（waterside oxygen & acid corrosion）：溶解氧与低 pH 引发汽包内壁点蚀/均匀腐蚀；停炉保护不当加剧氧腐蚀；应力集中区加速
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.：0.8 · Evidence source：Industry consensus
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）std:GB-T-16507 — GB/T 16507 — 水管锅炉 · 中国水管锅炉标准std:DL-T-438 — DL/T 438 — 火力发电厂金属技术监督规程 · 金属技术监督（蠕变/氧化）
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)
8/5/3FMEA Sev/Occ/Det
0.4RBI λ
0.55Monitor pdet
4 月Insp. int.
Current tasks:每半年进行汽包内壁超声波测厚 | 每周进行水质分析监测溶解氧和pH值 | 每次停炉进行内窥镜检查
RCFA incident:BL-201A 发生汽包内腐蚀，严重程度 8，后果类型 Safety/Environmental
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task温度/红外热成像监测, 超温报警与根因排查; 无损检测(UT/VT/MT/PT), 按 API 581 RBI 风险定级设定检验间隔
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=corrosion; overheat
Governing standardsAPI 530API 570API 571API 581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。