Tag: Worksite Safety

What Do We Do About Arc Hazard?

To be absolutely clear – there is an arc hazard in the utility workplace. There is also a need for protecting employees with arc protective clothing. If you are responsible for hazard mediation, you should have an arc protection program or at least a plan to begin a program. Regularly, people call me and ask what they should do about NFPA 70E: Standard for Electrical Safety in the Workplace; and therein lies the problem. NFPA 70E is not the solution to utility arc flash hazards. What Does NFPA 70E Say?I have found out that most people who ask about complying with 70E have not thoroughly read...

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What You Need to Know About Substations

Beyond information peculiar to technical crafts, every person who enters a substation has a common need to understand substation grounding. This includes things to look for that might indicate problems in the station’s grounding system. Substation grounding plays the primary role in several key aspects of fault clearing, equipment preservation and, most importantly, personnel protection as well as protection of the passing public. In fact, if the ground grid in a station were not in place, anyone standing next to a breaker that operates stands a good chance of being shocked, if not killed. Twenty...

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Tower Rescue Pre-planning Pays Off

Tower rescue presents a completely different level of difficulty in planning and methodology. Whether 250-ft communications or transmission towers, they are often necessarily placed in remote areas, and usually inaccessible to conventional paramedic rescue vehicles. While it is each individual employer’s responsibility to make their own determinations on how rescues will be accomplished, the following may help in preplanning for these unusual rescue situations. Pre-planning for rescue in these situations must answer several questions. Effective Communications911 plays a key role in surviving...

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4 Rules to Live By

Looking for an alternative to ground-to-ground and cradle-to-cradle? The method suggested here could be your answer. Georgia Power Company (GPC) has developed the 4 Cover-up Rules philosophy to train employees rather than requiring a ground-to-ground or cradle-to-cradle glove and/or sleeve rule. Every fatality in the last 89 years at GPC has been phase-to-ground contact or in-series with line-to-load on either primary or secondary voltages. GPC has not had a fatality on system or source voltages (feedback) since the 4 Rules of Cover-up were developed and implemented after the last fatality in...

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Notes From the Underground

In the May/June 2005 issue of Incident Prevention the cover article, “Why Single-Point Grounding Works,” generated a lot of inquires about single-point worksite grounding in underground installations. The most frequently asked question was, “How do we create an equipotential zone for underground worksites?” I received inquiries from California to Maine, North Dakota to Florida. There were so many that IP asked if I could immediately address underground protective grounding for employees in this issue. OF BONDS AND BOUNDARIES Let’s begin with the practicality of...

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Why Single-Point Grounding Works

The pros and cons of single-point equipotential grounding, as opposed to working between your grounds or bracket grounding, has generated a lot of discussion. As found in IEEE-1048 Guide for Protective Grounding of Power Lines, single-point equipotential grounding is becoming more simply and accurately referred to as worksite grounding. In most cases, those who don’t trust worksite grounding don’t understand how or why it works. In fact, we have always been taught as linemen to “work between your grounds,” and that seemed like good advice. But it may not have been the...

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