©2011 Ohio Rural Electric Cooperatives 2012 NESC Update Changes to Work Rules

©2011 Ohio Rural Electric Cooperatives Statement of Copyright© This presentation has been prepared by the Safety & Loss Control Department of Ohio Rural Electric Cooperatives, Inc. (OREC), and is the Copyrighted property of OREC. This presentation material is only for the use by and for the employees of OREC members and is for internal business purposes. No distribution or display of this material, in whole or in part, electronically or otherwise is permitted to third parties, including third party consultants or vendors, without the express written permission of OREC. Copyright © 2011, Ohio Rural Electric Cooperatives, Inc.

©2011 Ohio Rural Electric Cooperatives Disclaimer This presentation has been prepared by the Safety & Loss Control Department, of Ohio Rural Electric Cooperatives, Inc., to provide awareness to cooperative operations personnel of changes that have been made to the National Electrical Safety Code which will become effective in 2012,and which may be helpful in the development of your own safety and training requirements. The information contained herein is not intended to be complete in all aspects but is intended to be a guide for the development of the cooperatives specific safety presentation material. This material may not contain all information necessary to develop a complete presentation, because each presentation depends to some extent on the circumstances of each individual cooperative. Each cooperative must take full responsibility for thoughtfully and thoroughly reviewing and developing their own presentation suitable for their own particular circumstances. OREC cannot and does not assume any responsibility or liability for any cooperatives compliance with applicable legal requirements regarding the development of safety presentations, practices and procedures or the safety and training of anyone’s employees and expressly disclaims any such responsibility and liability. OREC furnishes these materials solely for use by the cooperatives, as one resource among many to be chosen when training employees.

©2011 Ohio Rural Electric Cooperatives Part 4 Work Rules Page headers for this section being changed from “Rules for the Operations of Electric Lines” to simply “Work Rules”.

©2011 Ohio Rural Electric Cooperatives … Revised to clarify that if workers have exposure to arcs then any kind of clothing made of synthetic materials, unless arc rated, cannot be worn. This includes undergarments.

©2011 Ohio Rural Electric Cooperatives … Companies have a choice of how to proceed; can do a conventional arc hazard analysis or make use of tables included in this rule to determine clothing ratings needed to protect employees. Also emphasize that need for analysis and protection applies to all voltages from 50 through 800,000 V.

©2011 Ohio Rural Electric Cooperatives … … … Added in response to request for interpretation made after 2007 edition published. Just because an employee is working in the vicinity of energized lines or equipment does not necessarily mean they have exposure that would require arc rated clothing to be worn. Need to evaluate the work to be done, not just the location.

©2011 Ohio Rural Electric Cooperatives … … … Reemphasize that engineering controls and work practices can also be used to reduce and limit exposures to arcs.

©2011 Ohio Rural Electric Cooperatives New clothing selection table for low voltage arcs.

©2011 Ohio Rural Electric Cooperatives All the values in this table were corrected. An error was made in the original data and was published before being detected. TIA was issued with the corrected values in September of 2008.

©2011 Ohio Rural Electric Cooperatives … … Changed to emphasize that inspection of all climbing and fall protection equipment is to be made before use. Old rule did not say when or how often inspections were to be done.

©2011 Ohio Rural Electric Cooperatives … … NESC now bans the use of non-locking snaphooks on safety straps. Change also repeated in rule 420 K 8.

©2011 Ohio Rural Electric Cooperatives … Revised to make clear to workers that they should not come into contact with any truck, grounded or not, that is in the vicinity of energized lines.

©2011 Ohio Rural Electric Cooperatives … Numerous changes were made in the rules dealing with clearances when working on transmission voltages.

©2011 Ohio Rural Electric Cooperatives Minimum approach distances have changed due to a change made in the formula used to calculate the electrical component of the minimum approach distance.

©2011 Ohio Rural Electric Cooperatives … Equal potential grounding is to be used.

©2011 Ohio Rural Electric Cooperatives … … Workers on ground may still need additional protection from step or touch potentials on the ground.

©2011 Ohio Rural Electric Cooperatives Added to emphasize the importance of installing or removing grounds in the proper order in accordance with the directions in the rest of Rule 445.