Electric heaters, capable of heating all salt-containing piping and equipment to 1200°F, will be provided. The heaters will be 230 v tubular type, and ceramic heaters, in which the heating element is totally enclosed in ceramic. In general, the heaters will be derated by applying a maximum of 140 v. 
    Manually operated variable voltage circuits will be provided for control of the heater power.  Ammeters will be provided for supervision of each heater circuit. Operation of the heaters will be monitored by temperatures obtained, from thermocouples mounted, on the surface of all heated components.