Pharmaceutical, Biotech & GMP Manufacturing worked example

Batch Record Review Load with batch records to review of 250 records: a worked example

What does the result look like when batch records to review reaches 250 records? The full calculation is worked below with real intermediate numbers. Use it when GMP, QA, QC, validation, manufacturing, or operations teams need a quick planning estimate to staff QA release review, protect batch release dates, and identify documentation bottlenecks.

The inputs for this scenario

  • Batch records to review: 250 records (raised for this scenario; the documented default is 100)
  • Review hours per batch record: 1.2 hr / record (unchanged)
  • Available reviewer hours: 8 hr (unchanged)

Working through the calculation

  • Applying the documented formula (Required workload = Batch records to review × Review hours per batch record) to the inputs above produces each figure below.
  • At this operating point the engine returns 300 hr for total load, the number this scenario is built around.
  • At this operating point the engine returns 37.5 hr / hr for hourly equivalent.
  • At this operating point the engine returns 250 hr for input load.
  • At this operating point the engine returns 1.2 x for load factor.

How this compares with the baseline

  • Against the tool's baseline example, where batch records to review sits at 100 records and the headline result is 120 hr, this scenario comes in 150% above the baseline at 300 hr.
  • A figure at this level is achievable when batch records to review is genuinely sustained, not just peaked for a shift. It assumes uniform review time per record; a batch with deviations or open investigations can take several times the average and skew a plan built on the mean.

Results at a glance

  • Total load: 300 hr (headline result)
  • Hourly equivalent: 37.5 hr / hr
  • Input load: 250 hr
  • Load factor: 1.2 x

Run it with your numbers

  • Every input above is editable in the live Batch Record Review Load calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.