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Equipment T-101
FM tray_corrosion
ISO 14224 mode STD Structural deficiency
Source OPC Ontology KB
塔盘腐蚀/减薄 (Tray Corrosion)
T-101 · Distillation column
Related equipment → T-101
0.82Source conf.
0.80Evidence conf.
STDISO 14224 mode
1Failure Mechanism
Function:气液逐级接触传质
Failure cause:介质中含有腐蚀性组分（酸、碱、氯离子等）；操作温度或浓度超出设计范围；材料选型不当
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：Analysis of the corrosion failure of a semiconductor polycrystalline distillation column (2020, cited 18); Failure analysis on abnormal damage of methanol distillation column (2023, cited 6)
Evidence ref code：S2:9fc98a625c8cf594
Evidence conf.：0.8 · Evidence source：Industry consensus
⚠ The evidence ref code S2:9fc98a625c8cf594 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)：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 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 (22):
GB/T 7826-2012GB/T 27921-2011GB/T 36894-2018GB/T 44958-2024GB/T 37243-2019GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 510API 570API 571API 579-1/ASME FFS-1API 754API 576API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
6/6/3FMEA Sev/Occ/Det
0.46RBI λ
0.55Monitor pdet
1 月Insp. int.
Current tasks:定期检查塔盘厚度 | 更换腐蚀严重塔盘 | 优化操作条件
RCFA incident:T-101 发生塔盘腐蚀/减薄 (Tray Corrosion)，严重程度 6，后果类型 Operational
7RCM Maintenance Decision (strategy landing)
RTFDesign Modification / Inspection Task
Recommended task温度/红外热成像监测, 超温报警与根因排查; 材质复检 + 无损检测 + 设计/材质升级整改(RTF); 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; material; overheat
Governing standardsAPI 530API 570API 571API 579API 581ASME 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。