Proposal and test · Line A · Batch mixing

Hold temperature: no number offered

Hold temperature 84 to 88 °C · optimiser opt 2.4.1 · raised 20 Oct 08:00

Process agent·Line A·Jacket loop·Hold temperature 84 to 88 °C·08:00Recommend-onlyWithheld

Model of the mixer is outside its accepted fit for the new grade A-14, so no number is offered.

Expected result

AssumedViscosity2500 mPa·s90% interval 2200 to 2800Fit not accepted

Spec 2380 to 2600 mPa·s (dashed). Driven by Grade change.

Why this confidence

Method: Optimiser opt 2.4.1; band from the model of the machine; weakest input assumed
Model fit: Not accepted, number withheld
Safety filter: Passed: Inside narrowed band
Evidence: EV-A-1201

Limits

Hold temperature84 °C

7880 to 90 narrowed92

Signed by Plant head A. · 9 SeptStamped narrowingNow

If stoppedNothing was written.

NoticedProposedWithheld

Test on the model of the machine

Before anything is written

Predicted viscosity

AssumedViscosity2500 mPa·s90% interval 2200 to 2800Fit not accepted

Spec 2380 to 2600 mPa·s (dashed). Driven by Grade change.

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: Not accepted, number withheld
Safety filter: Passed: Inside narrowed band
Evidence: EV-A-1201

Viscosity, last 12 batches

Check	Result	Detail
Safety filter	Passed	Inside narrowed band
Model fit	Not accepted	Line model A a-2.2, coverage 81% on 96 held-out points
Weakest input	Assumed	A claim is as strong as its weakest load-bearing input
Inside the window	Yes	Signed 78 to 92 °C, narrowed 80 to 90

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