Superseded by 957-2005 Procedures for cleaning contaminated electrical insulators (excluding nuclear, toxic, and hazardous chemical contaminants) of all types, using various equipment and techniques, are provided.

This guide for cleaning insulators documents the procedures used for cleaning contaminated electrical insulators (excluding nuclear, toxic, and hazardous chemical contaminants) of all types, using various equipment and techniques. Because of the great variety of conditions, practices, electrical system designs, and contamination possibilities, this guide describes a number of approaches to insulator cleaning on power systems. The IEEE makes no representation or warranty as to the adequacy, accuracy, economy, or safety of this guide. When determining whether or not, and/or how, to use the information in this guide, all factors shall be considered with regard to the specific situation(s).

This guide presents information on the equipment needed and the methods that can be used when cleaning contaminated insulators. The methods or equipment, or both, presented are not intended to prescribe specific procedures, but to show the successful experience of many individuals who have safely cleaned contaminated insulators. The guide is intended to serve as a reference source for a company or persons seeking information on insulator cleaning procedures so that they may consider the experience of others in modifying or formulating insulator cleaning programs and practices.