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Equipment RP-101
FM valve_disc_fracture
ISO 14224 mode
Source synthetic + standards-based engineering estimate (ISO 14224 / API 676 / API 674 framework)
阀片断裂
RP-101 · 柱塞泵/隔膜泵/往复泵/计量泵/加药泵 (Reciprocating Positive Displacement Pump)
Related equipment → RP-101
0.80Source conf.
—Evidence conf.
ISO 14224 mode
1Failure Mechanism
Function:阀片承受交变冲击载荷
Failure cause:疲劳或材质缺陷致阀片断裂落入缸体
Damage mechanism：阀片弯曲疲劳在缺陷处裂纹扩展致断裂
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 674 — Positive Displacement Pumps - Reciprocating · 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 3 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
API 674API 675ISO 14224:2016API 580GB/T 9234GB/T 7782SH/T 3141ISO 13372GB/T 6075SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
7/2/3FMEA Sev/Occ/Det
0.08RBI λ
0.75Monitor pdet
6 月Insp. int.
Current tasks:阀声/示功图分析 | 磁粉检测阀片 | 定期解体检查阀组
RCFA incident:阀片断裂落入缸体造成液力端损伤, 后果类型 Safety/Operational, 严重度 7
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; 沉降/变形观测 + 支撑/基础评估; 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=deformation; fatigue; instrument
Governing standardsAPI 579API 612API 653ASME 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。