Proposal and test · Line A · Batch mixing

Agitator speed: 150 to 158 rpm

Agitator speed 150 to 158 rpm · optimiser opt 2.4.1 · raised 20 Oct 13:20

Process agent·Line A·Mixer M1·Agitator speed 150 to 158 rpm·13:20StayNeeds a decisionexpires in 3 h

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

Test on the model of the machine

Before anything is written

Predicted viscosity

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: Model Line model A a-2.2; band is the model's 90% interval; no single score is documented for proposals
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

Viscosity, last 12 batches

Check	Result	Detail
Safety filter	Passed	Inside narrowed band 130 to 170 rpm; Seal temperature margin held
Model fit	Accepted	Line model A a-2.2, coverage 81% on 96 held-out points
Weakest input	Modelled	A claim is as strong as its weakest load-bearing input
Inside the window	Yes	Signed 120 to 180 rpm, narrowed 130 to 170

Line model A a-2.2

Not accepted

90% interval coverage on 96 held-out points81%

70%85 to 95% accepted100%

Calibrated 17 Oct. Proposals on this line are withheld until all four checks pass. Model fit

Bring lot 3307 back inside the bandQuality head A. · lot Lot 3307 · raise agitatorCorrections to process