Tank, Vessel & Pressure Equipment Fabrication worked example

Radiography Cost at 58% coverage percentage requiring rt: a worked example

Suppose coverage percentage requiring rt falls to 58%. This page works the full calculation at that level so you can see exactly which result moves and by how much. The Radiography Cost metric gives a tank and pressure-vessel shop the total and per-unit cost of radiographic weld examination on a job, combining the number of shots, the per-shot rate, the fraction of welds requiring RT, and a fixed mobilization charge.

The inputs for this scenario

  • Weld shots or radiographs to expose: 100 shots (held at the documented default)
  • Cost per radiograph shot: 45 $ / shot (held at the documented default)
  • Coverage percentage requiring RT: 58 % (the input this scenario stresses; the baseline uses 80)
  • Setup and mobilization fixed cost: 250 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Radiography Cost cost = quantity × rate × capture factor + fixed cost.
  • Weighted cost works out to 2,860 $ at these inputs, and this is the headline figure for the scenario.
  • Per piece value works out to 28.6 $ / piece at these inputs.
  • Captured value works out to 2,610 $ at these inputs.
  • Fixed adjustment works out to 250 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where coverage percentage requiring rt sits at 80% and the headline result is 3,850 $, this scenario comes in 25.71% below the baseline at 2,860 $.
  • It computes total radiography cost as shots times rate times coverage plus a fixed setup fee, and divides by shot count for a per-shot figure. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Weighted cost: 2,860 $ (headline result)
  • Per piece value: 28.6 $ / piece
  • Captured value: 2,610 $
  • Fixed adjustment: 250 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Radiography Cost calculator, set coverage percentage requiring rt to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.