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Equipment C-101
FM fm_20
ISO 14224 mode ELP External leakage - process
Source OPC Ontology KB
Seal-face Contamination -> Leak
C-101 · Centrifugal compressor
Related equipment → C-101
0.82Source conf.
0.85Evidence conf.
ELPISO 14224 mode
1Failure Mechanism
Function:通过微米级气膜实现非接触密封
Failure cause:工艺气体含固体颗粒或液滴；密封气源不洁净；密封面结焦或腐蚀
2Source Basis (where this FM comes from)
OPC Ontology KBCSB Accident DBQuant benchmark
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·CSB Accident DB·Quant benchmark.
3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.85 · Evidence source：API_682
Governing standards (evidence)：ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_4baf3822af099542c2a396ec6e994d6b7479345845137275 — 压缩机防喘振系统完整技术方案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
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)
8/2/3FMEA Sev/Occ/Det
0.22RBI λ
0.8Monitor pdet
4 月Insp. int.
Current tasks:每日监测密封气泄漏量，超过标准值报警 | 每周检查密封气过滤器压差，超过0.1MPa更换 | 每半年检查密封面状态，使用内窥镜 | 建立SIL评估（按IEC 61511）确定安全完整性等级 | 每1个月执行proof test验证保护层有效性
RCFA incident:C-101 发生密封面污染→泄漏，严重程度 8，后果类型 Safety/Environmental
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task壁厚/型线超声测厚 + 耐磨层状态检查, 视情修复或涂层; 按压差/效率监测设定清洗周期 + 过滤/防堵维护; 无损检测(UT/VT/MT/PT), 按 API 581 RBI 风险定级设定检验间隔; 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=corrosion; erosion; fouling; seal_leak
Governing standardsAPI 510API 570API 571API 581API 682厂家规范
⚠ 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。