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Equipment SP-101
FM builtin_relief_valve_leak
ISO 14224 mode
Source synthetic + standards-based engineering estimate (ISO 14224 / API 676 / API 674 framework)
内置安全阀泄漏/起跳
SP-101 · 螺杆泵/齿轮泵/凸轮泵 (Rotary Positive Displacement Pump)
Related equipment → SP-101
0.80Source conf.
—Evidence conf.
ISO 14224 mode
1Failure Mechanism
Function:超压时提供设备自身保护
Failure cause:阀座损伤或弹簧疲劳致安全阀内漏或误起跳
Damage mechanism：阀座密封失效或弹簧整定漂移致安全阀功能异常
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / API 676 / API 674 framework)
Source confidence 0.80: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / API 676 / API 674 framework).
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:API 520 — Sizing, Selection, and Installation of Pressure-relieving Devices · 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
API 676ISO 14224:2016API 580GB/T 7784GB/T 10886SH/T 3140ISO 13372GB/T 6075SAE JA1011_202411GB/T 28267
No separate clause reference.
6Derived Analysis (seeded from this FM)
6/2/4FMEA Sev/Occ/Det
0.1RBI λ
0.6Monitor pdet
12 月Insp. int.
Current tasks:检查安全阀回座与内漏 | 校验整定压力 | 监测排出压力波动
RCFA incident:内置安全阀内漏或误起跳致排量损失/超压风险, 后果类型 Safety/Operational, 严重度 6
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task无损检测(UT/MT/PT) 监测裂纹萌生, 关键转动件定时拆检; 标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理; 泄漏监测 + 密封/填料定期更换, 螺栓热紧固
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=fatigue; instrument; seal_leak
Governing standardsAPI 510API 579API 612API 682ASME VIIIGB/T 21109IEC 61511ISA 84
⚠ 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。