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Equipment SP-101
FM rotor_wear_clearance
ISO 14224 mode
Source synthetic + standards-based engineering estimate (ISO 14224 / API 676 / API 674 framework)
螺杆/转子磨损·间隙增大·内漏
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:转子副形成密闭腔并增压输送
Failure cause:磨粒或汽蚀导致转子型面磨损, 间隙增大内漏上升
Damage mechanism：转子型面在磨粒/汽蚀下磨损, 配合间隙增大使容积效率下降
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 676 — Rotary Positive Displacement Pumps · 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 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)
6/3/4FMEA Sev/Occ/Det
0.2RBI λ
0.7Monitor pdet
12 月Insp. int.
Current tasks:监测排量与进出口压差 | 振动分析 | 定期测量间隙
RCFA incident:转子型面磨损致间隙增大、内漏与排量下降, 后果类型 Operational, 严重度 6
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理; 入口压力/温度监测 + 叶轮表面蚀坑检查, 优化 NPSH 工况; 绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试; 振动频谱分析 + 动平衡 + 激光对中, 状态监测趋势管理; 壁厚/型线超声测厚 + 耐磨层状态检查, 视情修复或涂层
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=cavitation; electrical; erosion; instrument; vibration
Governing standardsAPI 510API 570API 581API 610API 617API 670API 682API 684GB/T 14285GB/T 21109IEC 60034IEC 61511IEEE C57ISA 84ISO 10816
⚠ 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。