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Line A · 1
Saved answers, Line A
QuestionTopicSaved byConfidenceState
Will a shorter hold work on Grade A-12?A 50 min hold was predicted to keep viscosity inside spec.ProcessProcess engineer A.11 OctModelled2300 to 2620 mPa·sStale since 17 Oct

Went stale

Why, and since when
Will a shorter hold work on Grade A-12? · since 17 OctModel of the mixer recalibrated to a-2.2 and its fit is no longer accepted; the safety filter has since withheld this change.Lot 3307 outlook · since 19 OctA correction was sent to Process after this was saved, and lab results for the lot are still missing.

By line and topic

Counts
LineTopicSavedStale
Line AProcess11
Line AQuality21
Line BProcess20
Line BQuality10

Evidence the thread behind each answer cites

Evidence
IdLabelClaimSaved answerProof
EV-A-1180MeasuredViscosity rose 38 mPa·s over the last 9 batches.Will a shorter hold work on Grade A-12?Source record
EV-A-1188MeasuredEnd-of-hold torque rose with it on the same batches.Will a shorter hold work on Grade A-12?Lot 3307 viscosity save
EV-A-1191ModelledA small agitator speed increase would bring it back inside the band.Will a shorter hold work on Grade A-12?Source record

Will a shorter hold work on Grade A-12?

Process engineer A. · Line A · Process
Stale since 17 Oct
Stale since 17 Oct (3 d ago)Model of the mixer recalibrated to a-2.2 and its fit is no longer accepted; the safety filter has since withheld this change.

A 50 min hold was predicted to keep viscosity inside spec.

ModelledBand 2300 to 2620 mPa·s
Hold time 55 to 50 minLine model A
Answer as saved, from the thread
Why is Line A viscosity drifting up this week?
ModelledWeakest of 3 cited claims
Why this confidence
Method
Each claim carries the label of its evidence; the answer takes the weakest. Uncited numbers are removed before an answer is shown.
Evidence
EV-A-1180, EV-A-1188, EV-A-1191
  1. Viscosity rose 38 mPa·s over the last 9 batches.EV-A-1180Measured
  2. End-of-hold torque rose with it on the same batches.EV-A-1188Measured
  3. A small agitator speed increase would bring it back inside the band.EV-A-1191Modelled
Card, read-onlyAgitator speed 150 to 158 rpmWaiting
agitator: 150 to 158
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
Line model; band only, no single percentage
Model fit
Accepted, four checks passed
Evidence
EV-A-1188, EV-A-1191
Open in AskSaved 11 Oct