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Hold time 50 min withheld by safety filter

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Process agent·Line A·Mixer M1·Hold time 55 to 50 min·14:00StayWithheld

Hold time: no number offered

Shorter hold looked possible on Grade A-12.

EV-A-1060
Expected result
ModelledViscosity2450 mPa·s90% interval 2300 to 2620Safety filter failed
Spec 2380 to 2600 mPa·s (dashed). Driven by Hold time.
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
Failed: Predicted band crosses the upper spec
Evidence
EV-A-1060
Limits
Hold time55 min
4070
Signed by Plant head A. · 9 SeptNow
If stoppedNothing was written.
NoticedProposedWithheld

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

18 Oct 14:00Proposed by optimiser opt 2.4.0

Evidence on demand

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