Safety practices in electrolytic cell line working zones: 1994 changes

In 1974 the Electrical Cell Line Working Group of the Chemical Industry Committee prepared a trial-use standard for Electrical Safety Practices in Electrolytic Cell Line Working Zones. Comments on the trial-use standard were incorporated into a full-status standard and published as IEEE Std 463-1977, IEEE Standard for Electrical Safety Practices in Electrolytic Cell Line Working Zones. IEEE Std 463-1977 was reaffirmed in 1987. IEEE Std 463 was used as a source document for Article 668, Electrolytic Cells, of the National Electrical Code (ANSI/NFPA 70); Part 1, Chapter 4H, Specific Purpose Equipment and Installations-Electrolytic Cells of the Standard for Electrical Safety Requirements for Employee Work Places (NFPA 70B-1988); and OSHA 1910.306(h), Electrolytic Cells. In 1991 a working group was formed to review and update IEEE Std 463. The purpose of this article is to describe the current update to IEEE Std 463. The current application of IEEE Std 463 in relation to NFPA 70; NFPA 70E, Parts 1 and 2; and OSHA 1910 Subpart S-Electrical are discussed.