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Equipment BL-201A
FM fm_7
ISO 14224 mode OHE Overheating
Source OPC Ontology KB
High-temperature Oxidation / Creep
BL-201A · Boiler
Related equipment → BL-201A
0.82Source conf.
0.85Evidence conf.
OHEISO 14224 mode
1Failure Mechanism
Function:将饱和蒸汽过热
Failure cause:长期运行温度超过材料许用值；频繁启停导致热应力循环；材料初始缺陷或选材不当
Damage mechanism：高温蠕变破裂（creep rupture, Larson-Miller 超限）+ 氧化（oxidation）+ 热应力循环疲劳
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.：0.85 · 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:API-579 — API 579-1/ASME FFS-1 — Fitness-For-Service · 剩余寿命/FFS（蠕变 Omega、Part 10）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: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:每半年进行金相检查评估氧化层和蠕变损伤 | 每年进行壁厚测量和直径胀粗监测 | 每两年进行高温段管材寿命评估 | 建立SIL评估（按IEC 61511）确定安全完整性等级 | 每1个月执行proof test验证保护层有效性
RCFA incident:BL-201A 发生高温氧化/蠕变，严重程度 8，后果类型 Safety/Environmental
7RCM Maintenance Decision (strategy landing)
RTFDesign Modification / Inspection Task
Recommended task沉降/变形观测 + 支撑/基础评估; 材质复检 + 无损检测 + 设计/材质升级整改(RTF); 无损检测(UT/MT/PT) 监测裂纹萌生, 关键转动件定时拆检; 蠕变测量/金相监测, 按剩余寿命管理; 温度/红外热成像监测, 超温报警与根因排查
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=creep; deformation; fatigue; material; overheat
Governing standardsAPI 530API 570API 579API 612API 653ASME IIIASME VIII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。