Gains in time observed when using a suitable welding preparation tool rapidly prove to be considerable.
Preparing for welding on a 10” pipe with 1” thick walls only takes the operator a few minutes (5 at the most) with a Protem US80 inside clamping beveller for example, irrespective of the material to be welded (Austenite, Duplex, Inconel, stainless steel, etc.). By using a grinding wheel or other unsuitable tooling, the time taken for preparing for welding will easily be multiplied by 2 or 3 (between 10 and 15 minutes for a far-from-perfect result, which will necessarily be non-repetitive. An operator doing just five welds per day on this type of pipe will need to bevel 10 pipe-ends. If we count a gain in time of 10 minutes per bevelling operation, we will obtain a total saving of 100 minutes per day or 1 hour and 40 minutes. As the average hourly cost of industrial labour is 36.8 Euros, according to Eurostat data, the financial gain is at least 63 euros per day, which makes a total of 14,238 euros per year (considering that there were 226 working days in 2014). In this way, gains will rapidly cover initial investments made by the company.
Perhaps, this case study may not be representative of what can be found in all companies, but, even so, by making the calculation, keeping suitable equipment in mind and making a comparison with the savings made over a year, it can be seen very clearly that gains are by no means negligible.