<prompt> Translate the following text to EnglishKazi ya pekee ya kitaalamu inayohitajika kwa mitambo ya SCR ni wanachama wa biashara ya boilermakers, na makadirio ya mahitaji ya boilermakers yalifanywa.  <response>: The only specialized labor necessary for SCR installations are members of the boilermakers trade, and estimates of boilermaker demand were made. 