本设备共 14 个失效模式(FM),其中 4 个为高风险(S≥8 或 O≥8)。 主导风险来自「轴承断油/烧瓦」(S=8, O=3, AP=低)。 主要失效机理:高温氧化 / 蠕变, 蒸汽侧冲蚀, 外部腐蚀 / CUI。 RCM 维修决策以 CBM 为主(CBM 13 / PM 1 / RTF 0)。 建议优先对高风险 FM 安排 RBI 定点测厚与在线监测复核;含合金部件须执行 PMI 抽检;缺陷按 API 579-1 FFS 闭环。This equipment has 14 failure modes (FM), of which 4 are high-risk (S≥8 or O≥8). The dominant risk is '轴承断油/烧瓦' (S=8, O=3, AP=低). Main failure mechanisms: 高温氧化 / 蠕变, 蒸汽侧冲蚀, 外部腐蚀 / CUI. RCM maintenance decisions are dominated by CBM (CBM 13 / PM 1 / RTF 0). Recommendation: prioritize RBI spot thickness measurement and online-monitoring review for high-risk FMs; perform PMI sampling on alloy components; close defects per API 579-1 FFS.
由结构化 KB 数据合成(compose,非大模型实时推理);所有结论可在下方章节溯源,参数仍为合成/工程估计。Synthesized from structured KB data (compose, not real-time LLM inference); all conclusions traceable in the sections below; parameters remain synthetic / engineering estimates.
| 材质Material | 合金钢缸体 + 转子(承压边界) |
| 介质Service Fluid | 高温高压蒸汽 |
| 设计温度/压力Design T/P | 480 ℃ / 3.5 MPa |
| 名义壁厚/最小允许Nominal/Min WT | 40.0 / 32.0 mm |
| 上次检验Last Inspection | 2025-05 |
| 损伤机理Damage Mechanisms | 高温氧化 / 蠕变、蒸汽侧冲蚀、外部腐蚀 / CUI |
| 后果类型Consequence Type | Operational |
| 检验有效性Inspection Effectiveness | 0.9 |
| 置信度Confidence | 0.8 |
| 腐蚀速率(估)Corrosion Rate (est.) | 0.167 mm/yr |
| FMFM | SS | OO | DD | APAP | 后果Consequence | 机理Mechanism | 证据Evidence |
|---|---|---|---|---|---|---|---|
| 轴承断油/烧瓦 ▸ 展开▸ expand | 8 | 3 | 4 | 低 | Operational,Safety | 轴承润滑油中断/油质劣化 → 巴氏合金熔毁(bearing lube loss → babbitt wipe)+ 轴振超限 | 4 |
| 蠕变与应力破裂 ▸ 展开▸ expand | 8 | 3 | 3 | 低 | Operational,Safety | 蠕变与应力破裂 (MCS MECH-CREEP) | 1 |
| 氯化物应力腐蚀开裂 ▸ 展开▸ expand | 8 | 3 | 3 | 低 | Operational,Safety | 氯化物应力腐蚀开裂 (MCS MECH-CLSCC) | 1 |
| 热疲劳 ▸ 展开▸ expand | 8 | 3 | 3 | 低 | Operational | 热疲劳 (MCS MECH-THERMAL-FATIGUE) | 1 |
| 动叶片冲蚀/水蚀 ▸ 展开▸ expand | 7 | 3 | 3 | 低 | Operational | 末级叶片水蚀(moisture/wet-steam erosion)+ 固体颗粒冲蚀(SPE)+ 高周疲劳(HCF, 喷嘴尾迹) | 4 |
| 密封失效 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 密封失效 (MCS MECH-SEAL-FAILURE) | 1 |
| 保温层下腐蚀 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational,Environmental | 保温层下腐蚀 (MCS MECH-CUI) | 1 |
| 不对中 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 不对中 (MCS MECH-MISALIGNMENT) | 1 |
| 转子不平衡 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 转子不平衡 (MCS MECH-UNBALANCE) | 1 |
| 高温氧化 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 高温氧化 (MCS MECH-OXIDATION) | 1 |
| 阀门卡涩/内漏 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 阀门卡涩/内漏 (MCS MECH-VALVE-STICKING) | 1 |
| 均匀/局部减薄(通用减薄) ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 均匀/局部减薄(通用减薄) (MCS MECH-THINNING) | 1 |
| 联轴器失效 ▸ 展开▸ expand | 6 | 3 | 3 | 低 | Operational | 联轴器失效 (MCS MECH-COUPLING-FAILURE) | 1 |
| 结垢/堵塞 ▸ 展开▸ expand | 5 | 3 | 3 | 低 | Operational | 结垢/堵塞 (MCS MECH-FOULING) | 1 |
判定:Decision: sampling_10pct — 合金 + 一般后果 → 抽检 10%(最少 1 件),API RP 578 §5
| 工单号WO ID | 类型Type | 描述Description | 周期(月)Interval (mo) | 成本cp(元)Cost cp (¥) | 成本cf(元)Cost cf (¥) | 预期风险削减Exp. Risk Reduc. | 成本来源Cost Source |
|---|---|---|---|---|---|---|---|
| ITPM-K-101-C06 | CBM | 状态监测/点检(轴承断油/烧瓦) | 3000 | 140000 | 18.1% | prior-template | |
| ITPM-K-101-R01 | CBM | 基于状态(On-Condition)工单(派生):轴承断油/烧瓦 | 3000 | 140000 | 18.1% | prior-template | |
| ITPM-K-101-C05 | CBM | 状态监测/点检(动叶片冲蚀/水蚀) | 5000 | 100000 | 9.5% | prior-template | |
| ITPM-K-101-I01 | I | UT 测厚网格扫查 | 24 | 1500 | 105000 | 31.6% | prior-template |
| ITPM-K-101-I02 | I | UT 定点测厚 | 24 | 0 | — | prior-template | |
| ITPM-K-101-I03 | I | 剥保温外部目视 + 抽查测厚 | 12 | 0 | — | prior-template | |
| ITPM-K-101-I04 | I | 外部目视检验 | 12 | 0 | — | prior-template | |
| ITPM-K-101-P07 | PM | 转子动平衡 | 12 | 0 | — | prior-template | |
| ITPM-K-101-P08 | PM | 叶片检查 | 12 | 0 | — | prior-template | |
| ITPM-K-101-P09 | PM | 润滑油在线监测 | 12 | 0 | — | prior-template | |
| ITPM-K-101-P10 | PM | 轴瓦温度监测 | 12 | 0 | — | prior-template |
成本取自 crq 参数(cp=检验成本,cf=失效纠正成本),预期风险削减为不执行该工单的年度失效概率上限近似。当前 crq 未标实测来源,统一标注 prior-template(非装置实测成本);实测数据经 ingest_measured 审批并入后转 posterior,削减值将升级为风险成本率精算(goal_planning._cost_rate_at)。Costs are drawn from crq parameters (cp = inspection cost, cf = failure correction cost); expected risk reduction approximates the upper bound of annual failure probability if the work order is not executed. Current crq has no measured source, uniformly tagged prior-template (not as-found plant cost); once measured data is approved and ingested via ingest_measured it switches to posterior, and the reduction upgrades to a risk-cost-rate actuarial value (goal_planning._cost_rate_at).
本设备 14/14 个 FM 已落 RCM 维修决策;分布:14/14 FMs have RCM decisions; distribution: CBM 13 PM 1 工程推导eng. infer
| FMFM | 决策Decision | 策略Strategy | 推荐任务Task | 间隔Interval |
|---|---|---|---|---|
| 轴承断油/烧瓦 | PM | 主动维修(Scheduled) | 绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试; 温度/红外热成像监测, 超温报警与根因排查; 标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理 | 高风险 1-3 月 / 中风险 6-12 月 / 低风险 检修期 (按 RBI 风险定级) |
| 蠕变与应力破裂 | CBM | 视情维修(On-Condition) | 蠕变测量/金相监测, 按剩余寿命管理; 温度/红外热成像监测, 超温报警与根因排查 | 高风险 1-3 月 / 中风险 6-12 月 / 低风险 检修期 (按 RBI 风险定级) |
| 氯化物应力腐蚀开裂 | CBM | 视情维修(On-Condition) | 无损检测(UT/VT/MT/PT), 按 API 581 RBI 风险定级设定检验间隔 | 高风险 1-3 月 / 中风险 6-12 月 / 低风险 检修期 (按 RBI 风险定级) |
| 热疲劳 | CBM | 视情维修(On-Condition) | 无损检测(UT/MT/PT) 监测裂纹萌生, 关键转动件定时拆检; 温度/红外热成像监测, 超温报警与根因排查 | 高风险 1-3 月 / 中风险 6-12 月 / 低风险 检修期 (按 RBI 风险定级) |
ITPM 总工单 11 张,RCM 派生 0 张;KB→工单闭环已建立,供 CMMS/SAP 消费。所有决策均属工程推导(非实测台账),执行前须经设备主管确认。Total 11 ITPM work orders, 0 RCM-derived; KB→work-order closed loop established for CMMS/SAP consumption. All decisions are engineering inference (not measured field data), subject to equipment-owner confirmation before execution.
| MIQA 状态MIQA Status | in_service |
| 完整性等级Integrity Level | 2 / 5 |
| 上次全面检验Last Full Inspection | 2025-05 |
| 下次检验到期Next Inspection Due | 2027-05 |
| MOC 关联MOC Link | MOC-2026-006 |
存在 4 个高风险 FM,建议优先安排 RBI 定点测厚与在线监测复核;对含合金部件执行 PMI 抽检。缺陷按 API 579-1 FFS 闭环。There are 4 high-risk FMs; prioritize RBI spot thickness measurement and online-monitoring review; perform PMI sampling on alloy components. Close defects per API 579-1 FFS.