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Equipment SW-101
FM enclosure_corrosion
ISO 14224 mode M M
Source engineering_estimate
柜体腐蚀(危险区域)
SW-101 · Switchgear / Circuit Breaker
Related equipment → SW-101
0.82Source conf.
—Evidence conf.
MISO 14224 mode
1Failure Mechanism
Function:防爆外壳完整性
Failure cause:防爆区域外壳腐蚀失爆
Damage mechanism：腐蚀致防爆失效
2Source Basis (where this FM comes from)
engineering_estimate
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by engineering_estimate.
3Evidence Chain (supporting basis)
This FM has no offline curated evidence text; it is derived from the ontology KB and cross-validated by the listed standard clauses and related accident investigations.
Governing standards (evidence)：std:IEC 60079-14 — Explosive atmospheres — Part 14: Electrical installations design, selection and erection · 机理级工程估计，非实测；引用 governing standard 作为分类出处
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
IEC 60079-14
No separate clause reference.
6Derived Analysis (seeded from this FM)
7/3/5FMEA Sev/Occ/Det
0.03RBI λ
0.8Monitor pdet
12 月Insp. int.
Current tasks:外壳防腐检查 | 气密性试验
RCFA incident:柜体腐蚀(危险区域)：防爆区域外壳腐蚀失爆，后果类型 Safety，严重度 7
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task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
Governing standardsAPI 570API 571API 581
⚠ 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。