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Equipment P-102A FM volute_erosion ISO 14224 mode STD Structural deficiency Source OPC Ontology KB
蜗壳冲蚀 (Volute Erosion)
P-102A · Centrifugal pump
Related equipment → P-102A
0.82Source conf.
0.80Evidence conf.
STDISO 14224 mode
1Failure Mechanism

Function:收集叶轮甩出流体，将速度能转换为压力能

Failure cause:介质含固体颗粒或气泡；流速过高或流道设计不当；材料硬度不足

2Source Basis (where this FM comes from)
OPC Ontology KBCSB Accident DBNUREG (US NRC)Quant benchmark

Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by OPC Ontology KB·CSB Accident DB·NUREG (US NRC)·Quant benchmark.

3Evidence Chain (supporting basis)
Evidence text：Numerical simulation of solid particle erosion in centrifugal compressor impeller (2013); Control valve cavitation and erosion analysis (2025, cited 11)
Evidence ref code：S2:b58d27035fc2a169
Evidence conf.：0.8 · Evidence source：Industry consensus
⚠ The evidence ref code S2:b58d27035fc2a169 is an internal index code of this KB, for tracing back to the offline curated corpus; it is not a public doi.org link, hence no hyperlink is provided.
Governing standards (evidence)：
  • ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_283b5a73620a2a66736f9bc2640d5c2a7479345845137275 — 离心泵结构原理及常见故障原因分析
  • ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_8a1d60fcb81b5086bdefbc680fe61bd57479345845137275 — 离心泵叶轮常见故障分析及避免策略
  • ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_9b8c77c034c4d40cd470345085c90c9c7479345845137275 — 装置离心泵振动九大杀手排查
  • ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_e433bfbdf4a9a4b807fc752c6d3e429d7479345845137275 — 离心泵运行中常见的八类隐形杀手及对策
  • ima://7479345845137275/wechatarticle_11035ae55c1b08ddb9e6d8bfbece61fe_d8bc091028963fe6986a324f751866257479345845137275 — 机械密封维护检修规程
  • ima://7458030677405755/word_11035ae55c1b08ddb9e6d8bfbece61fe_b8e3f40c0cbcc204999d1c296cc7b2467458030677405755 — ITP-7 Pumps（杜邦制造质量检验测试计划）
4Related Real Accidents (traceable to accident cards)
2020-01-I-TX2019-01-I-TX2004-08-I-NM2019-03-I-TXNUREG-LER-2019-001NUREG-PNO-2013-006

This FM is recorded in 6 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.

5Applicable Standards & Clauses
API 571API 580API 581-2025GB/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)
6/5/3FMEA Sev/Occ/Det
0.4RBI λ
0.8Monitor pdet
2 月Insp. int.

Current tasks:监测介质颗粒和气泡 | 定期检查蜗壳壁厚 | 优化流道设计

RCFA incident:P-102A 发生蜗壳冲蚀 (Volute Erosion)，严重程度 6，后果类型 Safety

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
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=erosion
Governing standards
API 510API 570API 581
⚠ 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 volute_erosion · 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.