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Equipment UPS-101 FM battery_cell_degradation ISO 14224 mode M M Source engineering_estimate
蓄电池单体容量衰减
UPS-101 · Uninterruptible Power Supply (UPS)
Related equipment → UPS-101
0.82Source conf.
—Evidence conf.
MISO 14224 mode
1Failure Mechanism

Function:储能后备

Failure cause:极板硫酸盐化/活性物质脱落致容量下降

Damage mechanism：硫酸盐化致容量衰减

2Source Basis (where this FM comes from)
engineering_estimate

Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by engineering_estimate.

3Evidence Chain (supporting basis)
This FM has no offline curated evidence text; it is derived from the ontology KB and cross-validated by the listed standard clauses and related accident investigations.
Governing standards (evidence)：
  • std:IEEE 450 — IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEEE 1188 — IEEE Recommended Practice for Maintenance of Valve-Regulated Lead-Acid (VRLA) Batteries · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEC 62040-1 — Uninterruptible power systems (UPS) — Part 1: General and safety requirements · 机理级工程估计，非实测；引用 governing standard 作为分类出处
4Related Real Accidents (traceable to accident cards)
NUREG-LER-1997-032-INDIANPOINT3NUREG-LER-1998-002-BROWNSFERRY

This FM is recorded in 2 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.

5Applicable Standards & Clauses
IEEE 450IEEE 1188IEC 62040-1

No separate clause reference.

6Derived Analysis (seeded from this FM)
7/4/4FMEA Sev/Occ/Det
0.08RBI λ
0.8Monitor pdet
12 月Insp. int.

Current tasks:蓄电池内阻/容量测试 | 均充维护

RCFA incident:蓄电池单体容量衰减：极板硫酸盐化/活性物质脱落致容量下降，后果类型 Operational，严重度 7

7RCM Maintenance Decision (strategy landing)
PMScheduled (Proactive) Maintenance
Recommended task功能测试/标定/校验, 按厂家与 SIL 要求周期执行
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=(无显式机理信号, 由 current_tasks 推导)
Governing standards
IEC 61511ISA 84
⚠ 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 battery_cell_degradation · 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.