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Equipment QT-201A FM fm_7 ISO 14224 mode ELP External leakage - process Source OPC Ontology KB
Mechanical Seal Leak
QT-201A · Quench tower
Related equipment → QT-201A
0.75Source conf.
0.70Evidence conf.
ELPISO 14224 mode
1Failure Mechanism

Function:实现设备功能

Failure cause:密封面磨损或划伤；安装不当导致偏磨；密封冲洗系统故障

2Source Basis (where this FM comes from)
OPC Ontology KBPublic newsQuant benchmark

Source confidence 0.75: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·Public news·Quant benchmark.

3Evidence Chain (supporting basis)
Evidence text：None
Evidence conf.：0.7 · Evidence source：engineering_estimate
Governing standards (evidence)：
  • ima://7458030677405755/word_11035ae55c1b08ddb9e6d8bfbece61fe_9d8b149bd2f3be727c6d967efbf962997458030677405755 — ITP-2 Pressure Vessels（杜邦制造质量检验测试计划）
4Related Real Accidents (traceable to accident cards)
NEWS-2012-12-AXIAL

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 (19):

GB/T 7826-2012GB/T 27921-2011GB/T 44958-2024GB/T 4888-2008GB/T 29639-2020AQ/T 3034-2022API 581API 580API 510API 571API 579-1/ASME FFS-1API 754API 576API 689API 755ISO 14224:2016ISO 20815:2018IEC 61511:2016ISO 31000:2018
6Derived Analysis (seeded from this FM)
7/4/4FMEA Sev/Occ/Det
0.34RBI λ
0.8Monitor pdet
4 月Insp. int.

Current tasks:每日目视检查泄漏滴漏 | 连续监测密封冲洗液压力 | 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:QT-201A 发生机械密封泄漏，严重程度 7，后果类型 Safety

7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task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=seal_leak
Governing standards
API 510API 682
⚠ 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。
FM fm_7 · Data from OPC KB and whitelisted public sources, compiled by Reliability AI for reliability demonstration only. Evidence ref codes are internal indices, not public DOIs.