Maintenance & Reliability
Predictive RUL · work orders · technician roster · Weibull / survival · 7-day plan
M07· 1D-CNN+LSTM bearing/pump RULM34· DeepSurv heater filament survivalM35· Weibull+GBM diamond-wire wearM44· CP-SAT preventive-maintenance windowsM52· Autoencoder sensor-failure detectorM19· Llama-3 SOP / work-instruction draft
Availability
96.3%
+0.6rolling 30d
MTBF
2.7 h
+1.2WCM ≥ 5 h
MTTR
6 min
-2.1target ≤ 12 min
Critical RUL
0
+1≤ 7 days
Action items
0
0≤ 21 days
Sensor faults
2
0autoencoder flags
Current shift
Morning (06–14)
Manning100%
MTTR factor1.00×
On-call techK. Tanaka · ext 2241
Spare parts $$48.6k stocked
Night shift advisory
MTTR multiplier rises to 1.45× — defer non-urgent WOs after 22:00.
7-day maintenance planM44CP-SAT optimised
| Asset | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| INSP | PM | · | · | · | · | WO | BD |
| TEX | · | · | · | · | · | PM | · |
| DIFF | · | · | · | · | WO | · | · |
| PECVD | · | · | · | · | PM | · | · |
| · | · | · | WO | · | · | · | |
| FIRE | · | · | · | PM | · | · | · |
| CELL | · | · | WO | BD | · | · | · |
| STR | · | · | PM | · | · | · | · |
| LAM | · | WO | · | · | · | · | · |
| FRAME | · | PM | · | · | · | · | WO |
| TEST | WO | · | · | · | · | · | PM |
PM Work order Forecast breakdown
Asset health · RUL forecast
M07M34M5211 monitored assets| Asset | RUL (95% CI) | Vibration RMS | Temp °C | Oil Q | Next PM | Sensor | Status |
|---|---|---|---|---|---|---|---|
Wafer Inspection INSP | 62d ±11 | 2.47 mm/s | 71 | in 6h 16m | OK | healthy | |
Texturing TEX | 54d ±10 | 2.89 mm/s | 73 | in 6h 22m | OK | healthy | |
Diffusion (POCl₃) DIFF | 69d ±12 | 2.68 mm/s | 70 | in 6h 10m | OK | healthy | |
PECVD (SiNx) PECVD | 105d ±19 | 2.47 mm/s | 83 | in 6h 9m | OK | healthy | |
Screen Printing PRINT | 106d ±19 | 3.38 mm/s | 74 | in 6h 5m | drift | healthy | |
Firing Furnace FIRE | 116d ±21 | 3.59 mm/s | 77 | in 6h 27m | OK | healthy | |
Cell Test & Sort CELL | 84d ±15 | 3.03 mm/s | 65 | in 6h 29m | OK | healthy | |
Stringing STR | 73d ±13 | 2.54 mm/s | 72 | in 6h 27m | OK | healthy | |
Lamination LAM | 80d ±14 | 2.96 mm/s | 78 | in 6h 11m | drift | healthy | |
Framing & J-Box FRAME | 50d ±9 | 3.45 mm/s | 85 | in 6h 2m | OK | healthy | |
Final Test (EL/Flash) TEST | 121d ±22 | 3.38 mm/s | 78 | in 6h 24m | OK | healthy |
Vibration trend · DiffusionM07
RMS mm/s · ISO 10816 alarm 4.5
Failure-mode Pareto (90d)
- BEARING_WEAR14 · 28%
- HEATER_DRIFT10 · 19%
- VAC_PUMP7 · 14%
- SENSOR_FAULT6 · 12%
- BELT_TENSION5 · 9%
- RF_INST4 · 8%
- OTHER5 · 10%
Technician roster
- K. TanakaMorningFurnaces · POCl₃ · firing2/3
- M. SchmidtMorningLamination · vacuum systems1/3
- L. PatelMorningPECVD · plasma · RF1/2
- J. NguyenAfternoonStringer · solder · automation1/3
- A. GarcíaAfternoonTest & calibration1/3
- R. KowalskiNightGeneral mech · electrical0/2
Open work orders
M19M466 activeWO-3041
P1
Diffusion furnace 1
M07
Heater filament survival probability < 30% — schedule replacement before next changeover
K. Tanaka
today
in progress
WO-3040
P2
Lamination press
M44
Quarterly vacuum-pump rebuild + EVA roller cleaning
M. Schmidt
in 2d
scheduled
WO-3039
P1
PECVD chamber 2
M52
Plasma uniformity sensor reconstruction error 0.42 — replace RF probe
L. Patel
today
open
WO-3038
P3
Stringer 3
Acoustic CNN flagged solder-iron tip wear — replace tip
J. Nguyen
in 5d
scheduled
WO-3037
P2
Cell tester
Quarterly Class-AAA solar simulator recalibration
A. García
in 7d
scheduled
WO-3036
P1
Wire saw
M35
Diamond-wire wear at 88% — replace before break
K. Tanaka
tomorrow
open
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