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Equipment REC-101
FM fm_5
ISO 14224 mode STD Structural deficiency
Source OPC Ontology KB
Connecting-rod Bolt Fracture
REC-101 · Reciprocating compressor
Related equipment → REC-101
0.75Source conf.
0.80Evidence conf.
STDISO 14224 mode
1Failure Mechanism
Function:连接曲轴活塞
Failure cause:预紧力过大或不足；螺栓材料或热处理缺陷；螺纹根部应力集中
2Source Basis (where this FM comes from)
OPC Ontology KBChina Emergency MgmtQuant benchmark
Source confidence 0.75: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·China Emergency Mgmt·Quant benchmark.
3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.8 · Evidence source：Industry consensus
Governing standards (evidence)：ima://7479345845137275/pdf_11035ae55c1b08ddb9e6d8bfbece61fe_09ac5889eb7d93d00ced858558ecc00c7479345845137275 — 空气压缩机RCM维护方案ima://7479345845137275/pdf_11035ae55c1b08ddb9e6d8bfbece61fe_cb149c9742b85d0a68be7323645916837479345845137275 — 空气压缩机FMEA分析报告ima://7479345845137275/pdf_11035ae55c1b08ddb9e6d8bfbece61fe_0c55dbb3622718721698638750915aa27479345845137275 — 空气压缩机大修后开车计划
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 580GB/T 7826-2012ISO 14224:2016SAE JA1011_202411
Standard clause references (16):
GB/T 7826-2012GB/T 27921-2011GB/T 44958-2024GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 571API 754API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
10/4/3FMEA Sev/Occ/Det
0.34RBI λ
0.55Monitor pdet
4 月Insp. int.
Current tasks:每运行4000小时使用扭矩扳手检查螺栓预紧力，确保在标准值±5%范围内 | 每次大修时进行超声波探伤检查螺栓根部及螺纹区域 | 建立螺栓更换台账，每运行20000小时强制更换新螺栓
RCFA incident:REC-101 发生连杆螺栓断裂，严重程度 10，后果类型 Safety/Environmental
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
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
Governing standardsAPI 579API 612ASME VIII
⚠ 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。