How do you calculate module assembly labor time?

Divide the number of modules by the assembly completion rate to get base time, then multiply by one plus the allowance. With 120 modules at 12 modules/min and a 10% allowance, base time is 10 min and total is 11 min.

Why add a fit-up and inspection allowance?

Bare assembly time ignores alignment, fit-up, weld inspection, and QA hold points that every capture or compression skid requires. The allowance — 10% in the example — converts an idealized rate into a realistic floor estimate.

What is a realistic completion rate for capture skids?

It depends entirely on module complexity and crew. A repeat, pre-kitted skid assembles far faster than a first-of-kind compression train. Derive your rate from time studies on similar work rather than a generic benchmark.

Should I use minutes or hours for this?

The calculator works in whatever consistent unit your rate uses. The default outputs minutes; for a full skid build you would typically scale to hours or shifts by adjusting the completion rate accordingly.

How does the allowance differ from contingency?

The allowance covers predictable fit-up and inspection effort built into normal work. Schedule contingency for unknowns — late parts, weather, design changes — sits on top and is not part of this calculation.

What if my modules vary a lot in size?

Split them into batches of similar modules, run the calculator per batch with a rate matched to that module type, and sum the results. A single blended rate over mixed modules will misestimate both fast and slow units.

Carbon Capture & CO₂ Compression Equipment calculator

Module Assembly Labor Calculator

Module Assembly Labor estimates the shop-floor time needed to build the skid-mounted modules that make up a packaged carbon capture or CO₂ compression system. Modular capture equipment — absorber skids, compression trains, and process packages — is assembled in a fabrication shop and shipped to site, so accurate labor estimates drive scheduling, crew sizing, and quotes. The calculation takes a raw assembly rate and inflates it with a fit-up and inspection allowance, because real skid work always carries rework, alignment, and QA checks beyond bare assembly. Fabrication planners and project schedulers use it to commit to ship dates with confidence.

What this calculator does

Estimate labor time required to assemble carbon capture modules, compressor skids, frames, piping, instrumentation, or packaged gas-handling equipment.
Use it when module assembly labor in carbon capture and co₂ compression equipment is changing rate or allowance and you want to see the impact.
It computes total module assembly labor time by dividing the module count by the completion rate, then multiplying by a fit-up and inspection allowance factor.

Formula used

Base assembly labor time = modules or skids to assemble ÷ assembly completion rate
Total module assembly labor time = base assembly labor time × allowance factor

Inputs explained

Modules or skids to assemble:
Assembly completion rate:
Fit-up and inspection allowance:

How to use the result

Use it when scheduling a modular capture or compression build, sizing the assembly crew, or quoting fabrication hours.
A single completion rate assumes every module is comparable; a one-off compression train and a repeat absorber skid have very different per-unit times, so split mixed batches.

Current U.S. benchmarks

Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate module assembly labor time? Divide the number of modules by the assembly completion rate to get base time, then multiply by one plus the allowance. With 120 modules at 12 modules/min and a 10% allowance, base time is 10 min and total is 11 min.
Why add a fit-up and inspection allowance? Bare assembly time ignores alignment, fit-up, weld inspection, and QA hold points that every capture or compression skid requires. The allowance — 10% in the example — converts an idealized rate into a realistic floor estimate.
What is a realistic completion rate for capture skids? It depends entirely on module complexity and crew. A repeat, pre-kitted skid assembles far faster than a first-of-kind compression train. Derive your rate from time studies on similar work rather than a generic benchmark.
Should I use minutes or hours for this? The calculator works in whatever consistent unit your rate uses. The default outputs minutes; for a full skid build you would typically scale to hours or shifts by adjusting the completion rate accordingly.
How does the allowance differ from contingency? The allowance covers predictable fit-up and inspection effort built into normal work. Schedule contingency for unknowns — late parts, weather, design changes — sits on top and is not part of this calculation.

Last reviewed 2026-05-12.