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Equipment CV-201A
FM fm_12
ISO 14224 mode LOO Low output
Source OPC Ontology KB
Filter-element Blockage -> Insufficient Supply
CV-201A · Control valve
Related equipment → CV-201A
0.75Source conf.
0.70Evidence conf.
LOOISO 14224 mode
1Failure Mechanism
Function:实现设备功能
Failure cause:气源净化不彻底；滤芯未定期更换；上游管道锈蚀产生杂质
2Source Basis (where this FM comes from)
OPC Ontology KBCSB Accident DBNUREG (US NRC)hseQuant benchmark
Source confidence 0.75: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·CSB Accident DB·NUREG (US NRC)·hse·Quant benchmark.
3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.7 · Evidence source：OEM_manual
Governing standards (evidence)：ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_71e0997a12b0754a71091e1cbcccab197479345845137275 — 20种阀门常见故障速查（内漏/卡涩/开度异常）ima://7458030677405755/word_11035ae55c1b08ddb9e6d8bfbece61fe_c791ba6bfe6ad927c9b48502742d33147458030677405755 — APPENDIX A8-2 Functionally Critical Valves（杜邦MIQA工具）
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 8 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 (17):
GB/T 7826-2012GB/T 27921-2011GB/T 44958-2024GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 570API 754API 576API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
7/3/3FMEA Sev/Occ/Det
0.28RBI λ
0.55Monitor pdet
4 月Insp. int.
Current tasks:每1个月检查滤芯压差指示器，记录压差 | 每3个月更换滤芯，使用原厂备件 | 安装气源净化装置，定期排放冷凝水
RCFA incident:CV-201A 发生滤芯堵塞→供气不足，严重程度 7，后果类型 Operational
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task按压差/效率监测设定清洗周期 + 过滤/防堵维护
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=fouling
Governing standardsAPI 571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。