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Process agent·Line A·Jacket loop·Hold temperature 84 to 86 °C·14:00TrialRunning trial

Raise hold temperature from 84 to 86 °C

Batches held at 86 °C reached target viscosity 6 minutes sooner in the model of the mixer, inside the narrowed band.

EV-A-1102EV-A-1120
Expected result
ModelledViscosity2470 mPa·s90% interval 2410 to 2540
Spec 2380 to 2600 mPa·s (dashed). Driven by Hold temperature, Hold time, Charge mass.
Why this confidence
Method
Optimiser opt 2.4.0; band from the model of the machine; weakest input modelled
Model fit
Accepted, four checks passed
Safety filter
Passed: Inside narrowed band 80 to 90 °C
Evidence
EV-A-1102, EV-A-1120
Limits
Hold temperature84 °Cto 86 °C
7880 to 90 narrowed92
Signed by Plant head A. · 9 SeptStamped narrowingNowProposed
If stoppedStop restores the checked prior value, 84 °C, from the next batch. If restore fails the line goes recommend-only.
DecidedPlant head A. · 15 Oct 14:00
NoticedProposedWaitingtrialMeasuringVerdictHolding

Signed limits on Line A

Stamped works inside limits set beforehand. It may narrow, never widen.
Signed limits
SettingSignedStamped narrowingSigned byVersionExpires
Hold temperature78 to 92 °C80 to 90 °CPlant head A. · 9 Septv3 · manifest-demo-v7#A19 Dec
Hold time40 to 70 minNonePlant head A. · 9 Septv3 · manifest-demo-v7#A29 Dec
Agitator speed120 to 180 rpm130 to 170 rpmPlant head A. · 9 Septv2 · manifest-demo-v7#A39 Dec

Line A · Batch mixing

Trial
Viscosity, last 24 runs
26002380
Grade A-12 · Batch 2418 in hold step

History

14 Oct 14:00Proposed by optimiser opt 2.4.0
15 Oct 14:00Decided by Plant head A.

Evidence on demand

Opens in Process
Hold temperature 86 °C, Line AInconclusiveR2Open the four questions