The latter Portion of the twentieth Century noticed the introduction of a lot more stringent boiler production specifications, specially in relation to welding engineering and inspection, and the evolution of electronic Regulate programs that now deliver an unsurpassed degree of trustworthiness. The fashionable, micro-processor centered, higher-integrity, "Boiler Command Process" (BCS) http://daltonolifa.blogpostie.com/27991698/modern-day-packaged-boiler-operation-routine-maintenance-and-coaching