FM Traceability Card · trace the source basis (tap links to trace back)
← Back to KB navigation
Equipment TX-101 FM dissolved_gas_fault ISO 14224 mode Internal fault gas generation (DGA) Internal fault gas generation (DGA) Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
内部故障产气（匝间/饼间短路，DGA 异常）
TX-101 · Power Transformer
Related equipment → TX-101
0.82Source conf.
—Evidence conf.
Internal fault gas generation (DGA)ISO 14224 mode
1Failure Mechanism

Function:内部绝缘与导电回路

Failure cause:局部过热或放电使油/纸裂解产气（H2/CH4/C2H2）

Damage mechanism：局部过热或放电使油/纸裂解产气（H2/CH4/C2H2 等），DGA 特征异常指示内部潜伏故障

2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)

Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类).

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:IEEE C57.104 — IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEC 60599 — Mineral oil-impregnated electrical equipment — Guide to the interpretation of dissolved and free gases · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEC 60076 — Power transformers · 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)
NUREG-LER-1997-032-INDIANPOINT3NUREG-LER-1998-002-BROWNSFERRY

This FM is recorded in 2 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.

5Applicable Standards & Clauses
IEEE C57.104IEC 60599IEC 60076

No separate clause reference.

6Derived Analysis (seeded from this FM)
8/3/2FMEA Sev/Occ/Det
0.05RBI λ
0.85Monitor pdet
12 月Insp. int.

Current tasks:在线 DGA 监测 | 三比值法诊断 | 油色谱定期化验

RCFA incident:内部故障产气（匝间/饼间短路，DGA 异常）：局部过热或放电使油/纸裂解产气（H2/CH4/C2H2），后果类型 Operational/Safety，严重度 8

7RCM Maintenance Decision (strategy landing)
PMScheduled (Proactive) Maintenance
Recommended task绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试; 温度/红外热成像监测, 超温报警与根因排查
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=electrical; overheat
Governing standards
API 530GB/T 14285IEC 60034IEEE C57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。
FM dissolved_gas_fault · Data from OPC KB and whitelisted public sources, compiled by Reliability AI for reliability demonstration only. Evidence ref codes are internal indices, not public DOIs.