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Equipment QT-201A
FM fm
ISO 14224 mode STD Structural deficiency
Source OPC Ontology KB
Acid Dew-point Corrosion
QT-201A · Quench tower
Related equipment → QT-201A
0.75Source conf.
0.85Evidence conf.
STDISO 14224 mode
1Failure Mechanism
Function:实现设备功能
Failure cause:燃料含硫量高，烟气中SO3浓度大；塔壁保温不良导致局部温度低于酸露点；操作温度波动频繁
2Source Basis (where this FM comes from)
OPC Ontology KBPublic newsQuant benchmark
Source confidence 0.75: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·Public news·Quant benchmark.
3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.85 · Evidence source：Industry consensus
Governing standards (evidence)：ima://7458030677405755/word_11035ae55c1b08ddb9e6d8bfbece61fe_9d8b149bd2f3be727c6d967efbf962997458030677405755 — ITP-2 Pressure Vessels（杜邦制造质量检验测试计划）
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 (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)
9/4/3FMEA Sev/Occ/Det
0.34RBI λ
0.55Monitor pdet
4 月Insp. int.
Current tasks:每周监测塔壁温度，确保高于酸露点温度 | 每季度超声波测厚检查壁厚减薄量 | 每半年更换腐蚀挂片并分析腐蚀速率
RCFA incident:QT-201A 发生酸露点腐蚀，严重程度 9，后果类型 Operational
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。