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Equipment INS-101
FM final_element_sticking
ISO 14224 mode Final element sticking Final element sticking
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
终阀卡涩
INS-101 · Instrumentation & Safety Instrumented System (SIS)
Related equipment → INS-101
0.82Source conf.
—Evidence conf.
Final element stickingISO 14224 mode
1Failure Mechanism
Function:执行切断/调节
Failure cause:阀杆锈蚀/结焦
Damage mechanism：SIS 切断阀阀杆卡涩致拒动（IEC 61511 最终元件要求）
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 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 / API / IEC 61511 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 61511 — Functional safety—Safety instrumented systems · 机理级工程估计，非实测；引用 governing standard 作为分类出处std:GB/T 21109 — 过程工业领域安全仪表系统的功能安全 · 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 1 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
IEC 61511GB/T 21109GB/T 20438IEC 61508ISA 84.00.01ISO 14224:2016API 580GB/T 7826-2012SAE JA1011_202411GB/T 27921-2023
No separate clause reference.
6Derived Analysis (seeded from this FM)
8/3/3FMEA Sev/Occ/Det
0.13RBI λ
0.85Monitor pdet
6 月Insp. int.
Current tasks:部分行程测试(PST) | 阀杆润滑
RCFA incident:终阀卡涩：阀杆锈蚀/结焦，后果类型 Safety，严重度 8
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition 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; 标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理; 按压差/效率监测设定清洗周期 + 过滤/防堵维护
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; fouling; instrument
Governing standardsAPI 571GB/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。