← Back to KB navigation
Equipment SC-101
FM capacity_control_malfunction
ISO 14224 mode Screw capacity control Screw capacity control
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
气量调节失灵
SC-101 · Screw Compressor
Related equipment → SC-101
0.82Source conf.
—Evidence conf.
Screw capacity controlISO 14224 mode
1Failure Mechanism
Function:匹配负荷需求
Failure cause:滑阀/旁通阀故障
Damage mechanism：容量调节失效致排气量失控（API 619 调节系统）
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类).
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:API 619 — Rotary-type Positive-displacement Compressors · 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)
This FM is recorded in 3 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
API 619API 617ISO 14224:2016GB/T 6075ISO 13372API 580API 571GB/T 7826-2012SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/3/3FMEA Sev/Occ/Det
0.15RBI λ
0.8Monitor pdet
6 月Insp. int.
Current tasks:调节阀校准 | 负荷响应测试
RCFA incident:气量调节失灵：滑阀/旁通阀故障，后果类型 Operational，严重度 5
7RCM Maintenance Decision (strategy landing)
PMScheduled (Proactive) Maintenance
Recommended task标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理
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=instrument
Governing standardsGB/T 21109IEC 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。