Process agent·Line A·Mixer M1·Agitator speed 150 to 158 rpm·13:20StayNeeds a decisionexpires in 3 h
Raise agitator speed from 150 to 158 rpm
Torque at the end of the hold step is 6% above the grade's best batches, which tracks with high viscosity in the last four batches.
Expected result
ModelledViscosity2490 mPa·s90% interval 2430 to 2560
Spec 2380 to 2600 mPa·s (dashed). Driven by End-of-hold torque, Charge mass, Jacket inlet temperature.
Why this confidence
- Method
- Optimiser opt 2.4.1; band from the model of the machine; weakest input modelled
- Model fit
- Accepted, four checks passed
- Safety filter
- Passed: Inside narrowed band 130 to 170 rpm; Seal temperature margin held
- Evidence
- EV-A-1188, EV-A-1191
Limits
Agitator speed150 rpmto 158 rpm
120130 to 170 narrowed180
Signed by Plant head A. · 9 SeptStamped narrowingNowProposed
If stoppedStop keeps 158 rpm for this batch and writes nothing new.
NoticedProposedWaitingstayMeasuringVerdictHolding