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Equipment SD-101
FM MECH-GALVANIC
ISO 14224 mode
Source synthetic + standards-based engineering estimate derived from MCS mechanism substrate (API/ISO/GB/TSG framework); mechanism-derived, non-measured, transparently labeled seed
电偶腐蚀
SD-101 · 疏水阀/疏水器/蒸汽疏水阀 (Steam Trap)
Related equipment → SD-101
0.80Source conf.
—Evidence conf.
ISO 14224 mode
1Failure Mechanism
Function:None
Failure cause:电偶腐蚀 驱动材料退化/功能失效
Damage mechanism：电偶腐蚀 (MCS MECH-GALVANIC)
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate derived from MCS mechanism substrate (API/ISO/GB/TSG framework); mechanism-derived, non-measured, transparently labeled seed
Source confidence 0.80: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate derived from MCS mechanism substrate (API/ISO/GB/TSG framework); mechanism-derived, non-measured, transparently labeled seed.
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)：mcs:API RP 571 (2020) — Galvanic Corrosion — API RP 571 (2020) — Galvanic Corrosion · 机理级工程估计, 非实测; 来源 MCS 机理矩阵 MECH-GALVANIC
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 3 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
GB/T 22654GB/T 12250ASME B31.1API 580ISO 14224:2016API RP 571
No separate clause reference.
6Derived Analysis (seeded from this FM)
6/3/3FMEA Sev/Occ/Det
0.19RBI λ
0.8Monitor pdet
12 月Insp. int.
Current tasks:壁厚测量(UT) | 目视/内窥镜检查 | 腐蚀速率监测
RCFA incident:电偶腐蚀导致设备功能退化/失效, 后果类型 Operational, 严重度 6
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。