Hydrogen Electrolyzer & Fuel Cell Manufacturing worked example

Clean Assembly Labor at 40% gowning, esd, and end-plate torque allowance: a worked example in hydrogen electrolyzer & fuel cell manufacturing

Push gowning, esd, and end-plate torque allowance up to 40% and the picture changes. This example computes every intermediate figure at that operating point. Use it when an industrial engineer is setting standard times for the stack assembly cell or quoting labor for a new contract build, and needs a clean-room-realistic per-stack hour count.

The inputs for this scenario

  • Cells per stack to assemble: 100 cells (unchanged)
  • Per-cell stack-up rate: 2.5 cells / min (unchanged)
  • Gowning, ESD, and end-plate torque allowance: 40 % (raised for this scenario; the documented default is 35)

Working through the calculation

  • Applying the documented formula (Base clean assembly labor = cells per stack รท stack-up rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 56 hr for required clean assembly labor per stack, the number this scenario is built around.
  • At this operating point the engine returns 40 hr for base clean assembly labor per stack.
  • At this operating point the engine returns 40 % for gowning, esd, and torque allowance.
  • At this operating point the engine returns 2.5 pieces / min for per-cell stack-up rate.

How this compares with the baseline

  • Against the tool's baseline example, where gowning, esd, and end-plate torque allowance sits at 35% and the headline result is 54 hr, this scenario comes in 3.7% above the baseline at 56 hr.
  • It computes required clean-assembly labor hours per stack by dividing cell count by the per-cell stack-up rate, then inflating for gowning, ESD, and end-plate torque overhead. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Required clean assembly labor per stack: 56 hr (headline result)
  • Base clean assembly labor per stack: 40 hr
  • Gowning, ESD, and torque allowance: 40 %
  • Per-cell stack-up rate: 2.5 pieces / min

Run it with your numbers

  • Every input above is editable in the live Clean Assembly Labor calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.