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Equipment E-201A
FM fm
ISO 14224 mode STD Structural deficiency
Source OPC Ontology KB
Shell Internal Corrosion / Erosion
E-201A · Shell-and-tube heat exchanger
Related equipment → E-201A
0.82Source conf.
0.80Evidence conf.
STDISO 14224 mode
1Failure Mechanism
Function:容纳管束，引导壳程流体流动
Failure cause:壳程流体含有腐蚀性成分（如H2S、CO2、Cl-）；流体流速过高或存在湍流、涡流；壳体材料选型不当或缺乏防腐涂层
2Source Basis (where this FM comes from)
OPC Ontology KBQuant benchmarkCSB Accident DB
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·Quant benchmark·CSB Accident DB.
3Evidence Chain (supporting basis)
Evidence text：Numerical simulation of solid particle erosion in centrifugal compressor impeller (2013); Control valve cavitation and erosion analysis (2025, cited 11)
Evidence ref code：S2:b58d27035fc2a169
Evidence conf.：0.8 · Evidence source：Industry consensus
⚠ The evidence ref code S2:b58d27035fc2a169 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_9c7fa5bf85974d70ef57d29a0a747f2a7458030677405755 — ITP-4 Shell and Tube Exchangers（杜邦制造质量检验测试计划）
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 8 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 (21):
GB/T 7826-2012GB/T 27921-2011GB/T 36894-2018GB/T 44958-2024GB/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)
7/5/3FMEA Sev/Occ/Det
0.4RBI λ
0.8Monitor pdet
4 月Insp. int.
Current tasks:每6个月进行超声波测厚，重点检查入口和底部 | 当壁厚减薄至设计最小值的85%时，安排修复或更换
RCFA incident:E-201A 发生壳体内部腐蚀/冲蚀，严重程度 7，后果类型 Operational
7RCM Maintenance Decision (strategy landing)
RTFDesign Modification / Inspection Task
Recommended task壁厚/型线超声测厚 + 耐磨层状态检查, 视情修复或涂层; 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; erosion; material
Governing standardsAPI 510API 570API 571API 579API 581ASME VIII
⚠ 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。