Specification for design and manufacture of electric boilers of welded construction|Electrical insulation, Stress analysis, Welding, Hot-water boilers, Flanges, Test specimens, Unalloyed steels, Heat treatment, Heating equipment, Boilers, Holes, Automatic control systems, Impact testing, Inspection, Seatings, Pipe junctions, Grades (quality), Safety measures, Defects, Access, Welded joints, Electrodes, Cylindrical shape, Dimensions, Documents, Visual inspection (testing), Non-destructive testing, Steels, Bend testing, Dished ends, Welded fittings, Mechanical testing, Electrically-operated devices, Design calculations, Earth conductors, Steam boilers, Pressure, Earthing, Approval testing, Boiler stays, Tensile testing, Immersion heaters, Manholes, Acceptance (approval), Safety valves, Marking, Electric control equipment, Design