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Equipment TX-101
FM temperature_indicator_failure
ISO 14224 mode Temperature indicator failure Temperature indicator failure
Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
温度指示/保护误动拒动（WTI/OTI）
TX-101 · Power Transformer
Related equipment → TX-101
0.82Source conf.
—Evidence conf.
Temperature indicator failureISO 14224 mode
1Failure Mechanism
Function:监测绕组/油温并保护
Failure cause:绕组温度计 WTI/油温 OTI 传感器漂移或继电器故障
Damage mechanism：绕组温度计 WTI/油温 OTI 传感器漂移或继电器故障，温度保护误动/拒动
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:IEC 60076-2 — Power transformers — Temperature rise · 机理级工程估计，非实测；引用 governing standard 作为分类出处std:IEEE C57.12.00 — IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating 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)
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 60076-2IEEE C57.12.00
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/3/4FMEA Sev/Occ/Det
0.04RBI λ
0.6Monitor pdet
12 月Insp. int.
Current tasks:温度指示比对/校准 | 保护定值测试
RCFA incident:温度指示/保护误动拒动（WTI/OTI）：绕组温度计 WTI/油温 OTI 传感器漂移或继电器故障，后果类型 Operational/Safety，严重度 5
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; 标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理
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; instrument; overheat
Governing standardsAPI 530GB/T 14285GB/T 21109IEC 60034IEC 61511IEEE C57ISA 84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。