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Equipment SC-101
FM bearing_journal_defect
ISO 14224 mode Screw journal bearing Screw journal bearing
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
滑动轴承缺陷
SC-101 · Screw Compressor
Related equipment → SC-101
0.82Source conf.
—Evidence conf.
Screw journal bearingISO 14224 mode
1Failure Mechanism
Function:支撑转子
Failure cause:油膜失稳/疲劳
Damage mechanism：径向滑动轴承因油膜涡动/疲劳失效（API 619 轴承规范）
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:API 617 — Axial and Centrifugal Compressors and Expander Compressors for Petroleum, Chemical and Gas Industry Services · 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 619API 617ISO 14224:2016GB/T 6075ISO 13372API 580API 571GB/T 7826-2012SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
6/3/4FMEA Sev/Occ/Det
0.15RBI λ
0.88Monitor pdet
6 月Insp. int.
Current tasks:油膜涡动监测 | 轴振/瓦振
RCFA incident:滑动轴承缺陷：油膜失稳/疲劳，后果类型 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; 绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试
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; fatigue
Governing standardsAPI 579API 612ASME VIIIGB/T 14285IEC 60034IEEE C57
⚠ 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。