INJ-00012 — expander_efficiency_drop
Status: EXPIRED · Category: A · Source: auto Fired at: 61.15 h · Duration: 4.0 h · Target: NE-01 Economic impact: $-800 /h
Parameters
{
"eff_drop_pct": 7,
"plant_id": "NE-01",
"eff_loss_pct": 7,
"product": "LAR",
"customer_id": "C-03",
"truck_id": "T-E02",
"driver_id": "D-E04"
}Cascade — 10 agent steps
| # | step | agent | detail |
|---|---|---|---|
| 1 | INJECTION | Injection Engine | expander_efficiency_drop: turbo-expander isentropic efficiency degraded. Less refrigeration produced per unit flow. |
| 2 | MPC_SOLVE | MPC Optimizer | 📐 MPC: Optimal load 66% (4h horizon) | Priority: 3 | Expected margin: $0/h | Reason: All constraints healthy → optimize revenue (+load) |
| 3 | PHYSICS | Physics Kernel | Expander provides critical cold-box refrigeration. Efficiency drop means warmer cold end → less liquid produced per kg of air. PHX warm approach rises. |
| 4 | PRODUCTION | Production Agent | Reducing 63%→60% to match reduced refrigeration capacity. At 60%, cold box balance is restored. |
| 5 | TANKS | Tank Inventory Agent | LOX at 60%, LIN at 61%. Liquid production drops ~10-15% even at reduced load. |
| 6 | DISPATCH | Dispatch Agent | Monitor tank levels closely. If liquid rates drop significantly, may need to reduce dispatch frequency. |
| 7 | CUSTOMERS | Customer Impact Agent | Medium-term risk: reduced liquid production means slower tank replenishment. Customers with <3d cover need priority. |
| 8 | LOSS_MITIGATION | Loss Ledger | 📉 L1: Primary Production Physical Balance — PROC compensates with load adjustment, flags maintenance |
| 9 | ECONOMICS | Economics Agent | Expander degradation: same power input, less product output. Specific power rises ~10%. Cost: +$144/h. |
| 10 | RECOVERY | Recovery Planner | 1) Inspect expander wheel and bearings. 2) Likely cause: wheel erosion or bearing wear. 3) Repair: 4-8h. 4) Post-repair: efficiency returns to design. |
Raw effects
- Expander eff -7% at NE-01
- expander_efficiency_drop: turbo-expander isentropic efficiency degraded. Less refrigeration produced per unit flow.
- 📐 MPC: Optimal load 66% (4h horizon) | Priority: 3 | Expected margin: $0/h | Reason: All constraints healthy → optimize revenue (+load)
- Expander provides critical cold-box refrigeration. Efficiency drop means warmer cold end → less liquid produced per kg of air. PHX warm approach rises.
- Reducing 63%→60% to match reduced refrigeration capacity. At 60%, cold box balance is restored.
- LOX at 60%, LIN at 61%. Liquid production drops ~10-15% even at reduced load.
- Monitor tank levels closely. If liquid rates drop significantly, may need to reduce dispatch frequency.
- Medium-term risk: reduced liquid production means slower tank replenishment. Customers with <3d cover need priority.
- 📉 L1: Primary Production Physical Balance — PROC compensates with load adjustment, flags maintenance
- Expander degradation: same power input, less product output. Specific power rises ~10%. Cost: +$144/h.
-
- Inspect expander wheel and bearings. 2) Likely cause: wheel erosion or bearing wear. 3) Repair: 4-8h. 4) Post-repair: efficiency returns to design.