Introduction to ANSI/IEEE standard 668-1987: IEEE recommended practice for electrical heating applications to melting furnaces and forehearths in the glass industry

This recommended practice, which has been in force since 1976, was adopted in 1987 as an ANSI/IEEE standard to be applied in the glass industry. Its purpose is to present procedures and positions preferred by the IEEE for the use of electric heating in glass furnaces and forehearths, to provide agreed definitions of equipment and operations, and to provide criteria for the safe operation of these electrical heating applications. The standard was prepared under the sponsorship of the Glass Industry Committee of the IAS. A brief outline of topics covered by the standard is given