Develop large-scale production processes

Production needs an updated process sheet for the new polymer run. Send the attached mass-balance and control sequence to Javier in process engineering and then to Anita in operations for approval, in that order, with a Wednesday go/no-go. Confirm the stoichiometry table and reactor volume cells are correct before sending.

Before I send this to operations, make the yield and key constraints obvious: put overall yield percent at the top, make reagent consumption per tonne easy to find, and flag steps where cycle time or cooling capacity will likely cause a line stop for a shift supervisor reviewing quickly.

We scaled reactor B to 2,000 liters and the final yield dropped from 88% to 79% on the first run. I'm the process engineer, Javier. I'm worried the sampling point is wrong or heat transfer is inadequate, but operators argue the recipe was followed. I cannot tell whether to re-run at the same scale, adjust agitation, or tighten sampling. What's the most likely cause and the best next experiment to isolate it with one more pilot run?

In three projects this year we lost two weeks each to ambiguous scale-up failures that later traced to either sampling location or cooling rates. I manage scale-up. Which routine should I change to save that wasted time: mandate early thermocouple mapping in every prototype, require a standardized sampling map attached to every batch log, or run a short heat transfer trial before full runs? Pick one and say how to make it stick across teams.