The Evolution of Personal Protective Grounding: Part 2
PPG is equally as important today as it was a century ago, providing lineworkers with a critical safeguard against electrical hazards.
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protective grounding (PPG) efforts using trial and error. We also reviewed Charles Dalziel’s contributions toward a greater industry understanding of dangerous current levels. […]
‘Avoid Contact’: Correctly Understanding the MAD Without a Distance
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The greater the nominal system voltage, the greater the air gap required to prevent a flashover and short-circuiting. […]
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash labels into a safe, effective operations and maintenance plan. Engineers […]
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational performance. This article highlights critical operational processes that must be thoroughly assessed and refined […]
There is an elephant in the room that plays a role in the safety culture of our industry. That elephant needs to be exposed, even though it’s going to be tough to do. Based on a less-than-official count, 12 to 14 lineworkers have lost their lives on the job over the past six months. The […]
Accuracy Above All: Authoring Articles for iP Magazine
For over 17 years, I have had the distinct privilege of writing for Incident Prevention magazine. I am genuinely honored that iP continues to publish my articles. My first column was about the four principles of distribution cover-up. At last count, I had written and submitted more than 100 articles over the years. During that […]
Q: We hear lots of opinions about whether a lineworker can lift a hot-line clamp that has a load on it. There is a rule that says disconnects must be rated for the load they are to break. We’ve been doing it forever. Are we breaking an OSHA rule or not? A: We have answered […]
Think before you act. That may be the single best piece of timeless wisdom we ever receive, especially when it comes to safety. And while it’s a simple concept, it’s not always our natural response, potentially presenting difficulties during job execution and task performance. Keeping in mind that safety tools are designed to give us […]
Utility Safety Podcast – Deep Dive – Improving Rope Safety in Energized Environments
This episode of “The Deep Dive” explores the hidden dangers of using standard synthetic ropes in high-voltage environments and the shift towards true dielectric ropes. We discuss how traditional ropes can become conductive when exposed to moisture and contaminants, turning them into a serious safety hazard. We also cover the importance of rigorous testing, proper […]
The Future of PPE – How Twiceme Technology Is Revolutionizing PPE for Utility Workers
In this episode of the Utility Safety Podcast, host Kate Wade sits down with Christian Connolly, CEO of Twiceme Technology, a Sweden-based smart safety company revolutionizing PPE with digital innovation. Christian shares his journey from fintech to safety tech, explains how wearable technology is transforming worker protection, and highlights Twiceme’s growing partnerships with leading PPE […]
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protect…
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The greater the nominal system voltage, the greater the air gap required to prevent a flashover and short-circuiting.
Due to its dielectric properties, air is also used to protect workers from electric shock. Incident Prevention readers who work in the electric utility industry are familiar with the term…
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash la…
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational per…
There is an elephant in the room that plays a role in the safety culture of our industry. That elephant needs to be exposed, even though it’s going to be tough to do.
Based on a less-than-official count, 12 to 14 lineworkers have lost their lives on the job over the past six months. The estimate is “less than official” because no dependable central recordkeeping authority exists other than OSHA, and OSHA can’t post an incident until they have either closed the investigation or formally cited the employer.
Some of you reading this have experienced a co-worker being killed on the job. In…
For over 17 years, I have had the distinct privilege of writing for Incident Prevention magazine. I am genuinely honored that iP continues to publish my articles. My first column was about the four principles of distribution cover-up. At last count, I had written and submitted more than 100 article…
Q: We hear lots of opinions about whether a lineworker can lift a hot-line clamp that has a load on it. There is a rule that says disconnects must be rated for the load they are to break. We’ve been doing it forever. Are we breaking an OSHA rule or not?
A: We have answered this question before…
Think before you act.
That may be the single best piece of timeless wisdom we ever receive, especially when it comes to safety. And while it’s a simple concept, it’s not always our natural response, potentially presenting difficulties during job execution and task performance.
Keeping in mind…
This episode of “The Deep Dive” explores the hidden dangers of using standard synthetic ropes in high-voltage environments and the shift towards true dielectric ropes. We discuss how traditional ropes can become conductive when exposed to moisture and contaminants, turning them into a serious s…
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protect…
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protect…
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The grea…
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash la…
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational per…
There is an elephant in the room that plays a role in the safety culture of our industry. That elephant needs to be exposed, even though it’s going to be tough to do.
Based on a less-than-official count, 12 to 14 lineworkers have lost their lives on the job over the past six months. The estimate…
For over 17 years, I have had the distinct privilege of writing for Incident Prevention magazine. I am genuinely honored that iP continues to publish my articles. My first column was about the four principles of distribution cover-up. At last count, I had written and submitted more than 100 article…
PPG is equally as important today as it was a century ago, providing lineworkers with a critical safeguard against electrical hazards.
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protective grounding (PPG) efforts using trial and error. We also reviewed Charles Dalziel’s contributions toward a greater industry understanding of dangerous current levels.
In short, Part 1 confirmed the need for PPG as a key lineworker safety precaution. In this second and final part, we will review PPG’s evolution as the industry designed and improved relevant equipment, conducted more testing and developed written standards.
1940-1970: Equipment Design and Improvements
In the 1940s, protective grounds were used sporadically depending on the utility company and the line crew foreman. It was a relatively common practice for lineworkers to make their own ground sets, using #6 soft-drawn copper and hot-line tap clamps. During this period, the industry began moving away from homemade grounding equipment in favor of equipment manufactured by companies including A.B. Chance, J.R. Kearney and Safety Live Line Co.
In the 1950s, A.B. Chance offered various PPG components. Around the same time, Safety Live Line Co. of Oakland, California, manufactured a grounding cluster that featured a removable twist-lock handle. It had been determined by this point that it is best to have the grounding conductors short-circuit the line and connect it to ground.
Further, using wood-handled sticks to install protective grounds had started to become standard. The grip-all or “shotgun stick” developed in the 1950s became popular for protective ground installation and removal. Some manufacturers made protective grounds with wood-handled sticks that were permanently attached to the grounding clamps. The sticks significantly improved safety, placing workers farther from conductors in case a hot line was grounded.
This era also saw an increased interest in testing. The “fuzzing” test procedure was included in the fourth edition of “The Lineman’s and Cableman’s Handbook,” published in 1964. The fourth edition also stated that after the test, two sets of grounds shall be placed on either side of the work area, within sight of the lineworkers.
The fifth edition of the handbook (1976) recommended using a voltage detector for testing, yet it also noted that fuzzing using “fuzz rings” could be effectively performed on higher voltages. These rings were not widely used and are now quite rare. A fuzz ring’s size and shape increased the sound level for lineworkers. It was also around this time when many power companies began providing documented rules and procedures regarding the application of personal protective grounds.
Bonneville Testing
In 1954, Bonneville Power Administration conducted comprehensive testing to evaluate the effectiveness of protective grounds in ensuring the safety of its lineworkers. The tests produced the following key findings:
“The current practice utilized by most power companies of installing grounds on adjacent structures to the one being worked on will likely not provide adequate protection for the linemen in the event the line comes energized.”
“The short-circuiting and grounding of all conductors at work locations, using jumpers and clamps of adequate current-carrying capacity, will likely provide sufficient protection for linemen.”
These results caused many power companies to reevaluate their protective grounding practices. Before the BPA testing, protective grounds were typically bracketed around the work location but not on the structure where the work was being done. The theory at the time was that grounds only needed to be placed between the worker and the energy source. From this point forward, the industry slowly evolved toward installing protective grounds at the work location. BPA also performed testing of personal protective grounds exposed to the high fault currents that were becoming more prevalent.
1970-1990: More Improvements
Considerable improvements were made to protective grounding equipment during this 20-year span, including equipment for use when stringing conductors and performing underground work. Manufacturers introduced equipment for testing components to ensure their capacity and reliability.
The sixth (1981) and seventh (1986) editions of “The Lineman’s and Cableman’s Handbook” listed the following requirements for effective protective grounding: a low-resistance path to earth; clean and tight connections; connections made to proper points; and adequate grounding equipment capacity.
The United States Congress enacted the Occupational Safety and Health Act in 1970, which established OSHA. Over time, OSHA issued various regulations related to protective grounding. Here’s what a couple of the first ones stated:
“Protective grounds shall be applied on the disconnected lines or equipment to be worked on.”
“Visual inspections or tests shall be conducted to ensure that equipment or lines have been deenergized.”
During this period, power companies gradually started moving toward worksite grounding, with “single-point grounding” and other terms surfacing. The following statement was published in the seventh edition of “The Lineman’s and Cableman’s Handbook”: “The protective grounds are installed from ground in a manner to short-circuit the conductors so that the lineman and everything in the work area will be at equal potential.” It had also been determined that by short-circuiting a line, any protective devices supplying the line would rapidly relay out if inadvertently energized.
The steady rise in fault currents was another factor affecting adequate protective grounding, increasing the need for well-made grounding components, such as clamps and cables. In 1983, ASTM F855, “Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment,” was first published. The comprehensive standard covered the design, materials, ratings and design testing of clamps, ferrules, cables and ground assemblies. It was a key element in standardizing and improving the quality of grounding components.
1990-2020: Equipotential Concept
As power companies and equipment manufacturers conducted more testing, they eventually concluded that the only safe way to protect lineworkers with PPG was to place them in an equipotential zone. In 1994, OSHA issued the 1910.269 standard, which contained this text at (n)(3): “Temporary protective grounds shall be placed at such locations and arranged in such a manner as to prevent each employee from being exposed to hazardous differences in electric potential.” Companies then devised various grounding and bonding procedures to mitigate placing lineworkers between different potentials at the worksite. The industry was slow to change from conventional bracket grounding to worksite grounding as power companies felt compliance with the equipotential theory was unnecessary and would add considerable time to jobs.
Since 1994, the industry has generally accepted the use of bonding and grounding to prevent employees from being exposed to hazardous differences in electric potential.
ASTM F2249, “Standard Specification for In-Service Test Methods for Temporary Grounding Jumper Assemblies Used on De-Energized Electric Power Lines and Equipment,” was initially published in 2003. It provided guidelines for inspecting and testing protective grounds. Manufacturers including Hubbell Power Systems and Hastings developed ground component testers, line testers, simulators and other PPG improvements. Hubbell also issued its encyclopedia of grounding during this period, providing a comprehensive reference on the subject.
The IEEE 1048 standard published in 1990 provided the first comprehensive guide for protective grounding of power lines. Most recently updated in 2016, it remains an excellent source of PPG information.
This period also saw the development of several methods and types of equipment that would eliminate or minimize the potential differences lineworkers might encounter. These included significant improvements in grounding equipment and procedures for wire stringing.
Conclusion
We have come a long way from the days of pulling a chain attached to a water pipe over conductors. There is no question that the subject of PPG has become increasingly complex, with the industry’s experience and research evolving over the years. This complexity underscores the continued need for effective worker training and education. One condition, however, remains the same: PPG has always been a key element of safety for work on electric power systems. It is as important today as it was 100 years ago.
About the Author: Alan Drew began his power industry career in 1959. While working for a local utility company, he earned a bachelor’s degree in electrical engineering. Drew was hired as the general superintendent for Clallam County Public Utility District in 1991. He moved to Boise, Idaho, in 1998, where he became an instructor with Northwest Lineman College and advanced to the position of senior vice president of research and development. He is a lifetime member of IEEE and a 2008 International Lineman Museum Hall of Fame inductee. Drew’s most recent accomplishment is writing “The American Lineman,” a book that honors the evolution and importance of the U.S. lineman. He retired in 2020 and is now a part-time technical consultant for Northwest Lineman College.
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The greater the nominal system voltage, the greater the air gap required to prevent a flashover and short-circuiting.
Due to its dielectric properties, air is also used to protect workers from electric shock. Incident Prevention readers who work in the electric utility industry are familiar with the term “minimum approach distance” (MAD). Workers in industries that incorporate NFPA 70E into their electrical safety programs may use the term “restricted approach boundary” (RAB). Although there are slight differences between the two, both the MAD and RAB establish a physical air gap between the qualified worker and exposed energized parts or lines to prevent the worker from inadvertent shock. Readers should note that electric utilities are not covered by the scope of NFPA 70E; however, several portions of the standard offer useful information that utility organizations may want to consider.
Two Critical Components
MAD and RAB incorporate two critical elements to keep workers safe: an electrical component followed by an ergonomic component.
The electrical component – also called the “minimum air insulation distance” or “MAID” – serves to prevent an arcover/sparkover/flashover, in which the voltage stress is greater than the dielectric strength offered by a certain spacing of air. This phenomenon is referred to as the “voltage breakdown of air” or “dielectric strength of air.” Remember that while air offers superb resistance to the passage of electric current, it has voltage-based limitations much like any other insulating material.
The ergonomic component is a safety buffer known as the “inadvertent movement factor.” It targets human error when work is performed near energized parts, mitigating simple employee mistakes, such as overconfidence, loss of situational awareness and incorrectly calculating the distance to an exposed part. This component also accounts for unexpected body movement (e.g., reaching for tools or materials, adjusting PPE, swatting at flying insects).
When the electrical and ergonomic components are combined, a corresponding MAD/RAB is determined. Figure 1 shows the MAD/RAB of the worker’s body in relationship to an exposed energized part.
Figure 1
OSHA’s MAD can be derived via two methods. The first is to employ mathematical calculations. For elevations up to 3,000 feet, use Table R-3 (AC voltages) or Table R-8 (DC voltages) found in 29 CFR 1910.269. Calculations for elevations above 3,000 feet must include an altitude correction factor along with overvoltage transient considerations for voltages greater than 72.5 kV. The second method is to utilize the alternative distances listed in Table R-6 for voltages of 72.5 kV and less; for 72.6 kV to 800 kV, use Table R-7.
NFPA 70E’s RAB distances are predetermined values located in Table 130.4(E)(a) for AC systems and Table 130.4(E)(b) for DC systems. The distances listed in both the OSHA and NFPA tables are limited to work locations with a maximum elevation of 3,000 feet.
Crossing the MAD/RAB: Prescriptive Action Required
As mentioned, the MAD/RAB is established to prevent unintentional contact by providing an adequate safe work zone between the worker and the energized exposed parts. Crossing the MAD/RAB must be treated the same as making intentional contact with the energized parts.
This important point needs to be emphasized: The purpose of the MAD/RAB is to prevent unintentional contact – but entering the MAD/RAB must be treated as making intentional contact.
That is because both OSHA 1910.269(l)(3)(iii) and NFPA 70E 130.4(G) establish prescriptive actions to be taken before a qualified electrical worker is permitted to violate the MAD/RAB: either the worker is insulated from the exposed energized parts, or the exposed energized parts are insulated from the worker.
The first action is accomplished when the worker dons voltage-rated rubber gloves with protectors and, if necessary, rubber sleeves. To complete the second action, install voltage-rated rubber blankets and/or hose sleeves over the exposed parts. An old industry saying – “Rubber up or cover up” – was birthed from this regulatory mandate.
Easy Concept or Confusing Directive?
For most voltages, the OSHA and NFPA 70E tables define a specific minimum spacing listed in feet or meters. The greater the voltage exposure, the greater the distance needed to protect the worker. This is true with most MADs/RABs. An exception occurs in the two standards where increments of length establishing a physical gap have been replaced with this ambiguous phrase: “Avoid contact.”
In Appendix B to 1910.269, “Working on Exposed Energized Parts,” OSHA includes the following footnote: “For voltages of 50 to 300 volts, Table R-3 specifies a minimum approach distance of ‘avoid contact.’ The minimum approach distance for this voltage range contains neither an electrical component nor an ergonomic component.” That means no safety buffer exists. OSHA applies “avoid contact” from 50 to 300 volts, while NFPA 70E applies it from 50 to 150 volts.
At face value, “avoid contact” may appear to be an easy safety concept that needs no explanation. And when electrical workers are asked what “avoid contact” means to them, “Don’t touch it” is a common response. This is logical since neither OSHA nor NFPA 70E provides a technical definition of the phrase. Without clarification, employers and workers are left to interpret its meaning on their own.
Per Merriam-Webster, “avoid” means “to keep away from”; “contact” is defined as “the junction of two electrical conductors through which a current passes.” Consequently, when OSHA and NFPA 70E use the two words together, workers are guided toward an incorrect and dangerous interpretation. They consistently interpret “avoid contact” to mean nothing more than a warning to be careful or refrain from touching an energized part.
Does a warning constitute an adequate barrier between life and death? The obvious answer is no, with fatality data supporting this position. Let’s recall that although the purpose of the MAD/RAB is to prevent unintentional contact through safety margins, crossing it requires precisely the same practices as intentionally contacting exposed energized parts. To enter the MAD/RAB, the worker is required to insulate either themselves or the parts (i.e., rubber up or cover up). Whenever practical, workers should do both.
Secondary Voltages are Hazardous
Some individuals, especially those who work around primary voltages, might think 120 volts isn’t particularly dangerous. Many of us have even said, “It’s only 120 volts” or “It’s only secondary voltage.” But when we review OSHA’s preamble to the final rule, we find that at least 25 electric utility workers died after contact with “only” 120 volts (see www.osha.gov/laws-regs/federalregister/2014-04-11).
OSHA also provided this clarification in the 2014 final rule: “The hazards posed by installations energized at 50 to 300 volts are the same as those found in many other workplaces. … The employee must avoid contact with the exposed parts, and the protective equipment used (such as rubber insulating gloves) must provide insulation for the voltages involved.” This means the worker must implement some type of active countermeasures that will prevent inadvertent contact with lower yet still hazardous voltages.
This concept is better understood by reviewing Figure 2, which shows the practice of rubber up and cover up while a worker takes voltage readings of an uninsulated, overhead, single-phase 120-/240-volt line. Note that while Figure 2 depicts bare wires, workers should wear rubber gloves whenever handling energized triplex or quadruplex secondary service drops. That’s because the insulation can become brittle due to weathering and crack while being handled.
Figure 2
What about working with equipment housed inside cabinets or enclosures, as shown in Figure 3? If the task is troubleshooting a 480-volt starter, Class 0 or 00 rubber gloves are adequate to protect the worker’s hands within the RAB of 12 inches. But in this example, are gloves alone adequate to protect the rest of the body? The answer is no due to the exposed parts mounted on the inside of the hinged door. Door hardware is normally energized at 120 volts, so the corresponding electric shock distance is “avoid contact.” If the worker’s understanding is “don’t touch it,” they would likely position their body to avoid touching the door-mounted components behind them. However, the worker could lose focus, become distracted and then step back into the door, or a breeze could move or close the door on the worker. Although the worker’s intention was to avoid contact, inadvertent contact occurs due to unconsidered factors.
Figure 3
A worker who understands the following is likely to take the action necessary to avoid making contact:
The risks and severity of contact with secondary voltages.
The purpose of the MAD or RAB (i.e., to avoid inadvertent contact with energized parts).
The regulatory requirements that must be met to cross the MAD or RAB, either intentionally or unintentionally.
By placing a voltage-rated sheet or blanket over the exposed door parts, as shown in Figure 4, the worker prevents accidental contact and fulfills the MAD/RAB entry requirement to insulate exposed energized parts from themselves.
Figure 4Conclusion
Electrical workers must be trained to understand that “avoid contact” does not simply mean “don’t touch it.” Workers also must be taught to properly respect secondary voltages, which can pose extreme health and safety hazards, including death. This pragmatic approach will help employers bridge knowledge gaps and reduce the number of preventable industry accidents and injuries.
About the Author: George T. Cole, CUSP, CESCP, CESW, CIT, SGE, is an instructor and electrical safety consultant for e-Hazard. Reach him at george.cole@e-hazard.com.
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash labels into a safe, effective operations and maintenance plan. Engineers who charge by the man-hour can generate these labels all day long, yet they aren’t the ones tasked with donning PPE to perform hot work. A fundamental link is missing in terms of safety.
Essentially, arc flash labels provide e…
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational performance.
This article highlights critical operational processes that must be thoroughly assessed and refined to support organizational safety. Every operational unit must take proactive ownership of its safety protocols and practices, actively integrating safety measures into all aspects of its operational processes. By integrating safety into daily routines, each unit fosters a culture of responsibility and prioritizes employee safety.
This article also highlights key aspects from my experience in the electric power industry. We will follow the framework provided by ANSI/ASSP Z10-2019, “Occupational Health and Safety Management Systems,” which addresses the following areas relative to implementation and operation:
Operational planning and control
Identification of operational issues
Operational risk assessment
Change management
Operational process verification
Procurement
Contractors
Emergency preparedness
I encourage readers to consider topics not covered in this article – including operational process verification and emergency preparedness – to obtain a more comprehensive understanding of the principles associated with the Z10 standard.
Operational Planning and Control
This section of the standard emphasizes a crucial aspect of how organizations equip their employees for success.
Rules and procedures. Let’s begin by discussing the implementation of rules and procedures in the workplace. As a consultant, I have consistently encountered missing or ineffective procedures and/or rules during organizational safety assessments. Safety rules that reference OSHA regulations hold little value if there are no clear procedures defining what is expected to comply with those rules. One example is stating in the safety manual that equipotential zone grounding is required without clearly explaining how to achieve it within all aspects of work. Rules and procedures must provide clear directions so that employees know what is expected of them and can successfully comply.
Competency. Ensuring the competency of employees plays an extremely important role in an effective SMS. An employee isn’t necessarily competent just because they attended school or received specific training. Competency is based on the employee’s ability to demonstrate a specific skill on a regular basis, using all required safety procedures in response to identified hazards. I purposely included “regular basis” in the previous sentence because some employees can pass written and practical tests immediately after training but struggle when performing those tasks later in the field.
Additionally, competency should never be solely based on field experience and time on the job. Although both are important factors, they must be paired with a structured method to ensure employee competency through the demonstration of proficiency. It is crucial to remember that this principle also applies when organizations promote employees to leadership positions. Seniority should never be the only reason to promote someone who will be responsible for safely leading others.
Maintenance and inspection programs. These programs are essential SMS components that should encompass electrical and mechanical equipment as well as other critical systems that require regular maintenance to ensure safety. National codes, such as the National Electrical Safety Code and the National Electrical Code, emphasize the importance of electrical equipment maintenance for both employee safety and system reliability. Many organizations adhere to manufacturer recommendations for maintenance; however, some have neglected inspections and maintenance for years. When equipment and systems are not adequately cared for, the risk of hazards significantly increases, potentially impacting employees’ ability to work safely. I believe that strong maintenance and inspection programs are imperative for an organization to achieve safety success.
Identification of Operational Issues
The main directive of this section of the Z10 standard is to evaluate whether the organization has (1) conducted a thorough assessment of its work processes and (2) adopted improved methods, tools, equipment, installations, designs and technologies suitable for today’s workforce. As an industry consultant, I believe electric power organizations must stay informed about and adaptable to innovations that can enhance workplace safety and efficiency.
An example I recently encountered involved employees working in a remote area with no access to radio or cellphone service. This is a serious operational issue, even if some workers view it as normal. Should an electrical contact or other serious injury occur, the affected employees would have little chance of receiving life-sustaining support. I consider this unacceptable. Known communication challenges require immediate operational evaluation and improvement based on available tools, equipment, rescue supplies and technology.
Numerous organizations fall into the trap of accepting the status quo without questioning it, adopting a mentality of “this is the way it is.” This mindset fails to recognize the critical nature of regularly evaluating and improving the methods and practices that support employees, thus risking serious operational upsets. Organizational leaders should actively seek to identify areas for improvement, implement innovative strategies and foster an environment in which employees know their feedback is valued.
Operational Risk Assessment
Here is something else that leaders must consider: Have each of the organization’s operational units taken the necessary steps to identify high-risk jobs by asking, “What are the worst things that could happen on our worksites?” Let’s be honest: While many operational leaders acknowledge this concept, their discussions sometimes overlook employee safety. Earlier in this series, I explored the distinction between planned work and actual work. These two activities represent distinct realities in the workplace. Frequently, operational processes and discussions focus on how work is theoretically done, neglecting the actual execution by field employees.
According to the Z10 standard, an operational risk assessment should consider organizational factors that can increase risk, such as production pressures, poor communication and lack of resources. Here is a possible scenario: A contractor has been hired to build a new substation for a utility. While on-site, the contractor receives a request for emergent work: replacing equipment in an energized substation located within 5 miles of the existing work. Should the contractor dispatch additional personnel with the necessary expertise to work in an energized substation, or should they assign the project to existing staff with limited experience in that environment?
If this were a real scenario, many decisions would influence the answer. They are frequently made based on the project’s financial aspects for both the utility and the contractor, rather than the risks involved. Such situations often stem from a widespread culture of risk acceptance that overlooks the potential negative consequences of these decisions.
Change Management
Has your organization recently implemented a new work method or safety rule that has created confusion among employees, causing them to revert to previous practices? This is common in organizations that lack a structured strategy to effectively communicate and manage change.
Operational units often communicate change during safety or operational meetings. Consider, for example, an organization that purchases a new distribution line recloser. The recloser is introduced during a safety meeting, where its basic functions and safety requirements are explained. Several days later, employees are tasked with troubleshooting an area where the new recloser is located, despite having little knowledge about its design, installation or operation. While changes are commonly introduced at safety meetings, my professional experience suggests that they are only effective when paired with employee skills training and proficiency demonstrations based on specific task requirements.
After identifying significant opportunities to enhance their change-management processes, many large organizations have appointed personnel explicitly tasked with addressing them. Regardless of whether your organization has such specialized personnel, it is essential to clearly understand how change is identified, assessed and managed. This includes recognizing the potential impact of change on various operational units and ensuring that all team members are prepared to adapt. Effective management reduces resistance to change while also fostering safety culture growth within the organization. By actively involving all stakeholders and clearly communicating the reasons for change, organizations can more smoothly integrate new practices and policies.
Procurement
Does your organization effectively incorporate procurement into its safety and risk management planning? To illustrate procurement’s critical role, let’s continue examining the line recloser example provided above. In that scenario, the procurement department identifies a new line recloser that has been successfully adopted by several other utilities, as communicated by the sales team. The purchasing team decides to acquire 25 units for evaluation, aiming to determine whether the reclosers will perform as promised and enhance operational efficiency.
However, a significant oversight occurs: no risk assessment is conducted prior to the acquisition, and there is no clear strategy to integrate the new devices into the organization’s existing operational framework. This could lead to implementation challenges, particularly if the new technology does not align with current processes or safety protocols.
Scenarios like this one are common in organizations that fail to involve their procurement department in operational risk assessments and safety planning. This lack of collaboration can result in the purchase of new equipment that does not meet safety standards or operational needs, ultimately leading to unnecessary risks and complications in the field. To ensure a safer, more efficient operational environment, it is vital to implement a comprehensive approach that includes procurement in these discussions.
Contractors
It is also essential for utility organizations and contractors to establish a comprehensive safety management standard that effectively addresses the unique safety requirements of contractors, tailored to their respective risks. The Z10 standard emphasizes the necessity of developing a systematic approach to identify, assess and mitigate potential safety and health risks associated with contract work. This process enhances safety performance and fosters a proactive organizational safety culture.
When engaging contractors, electric power organizations have historically adopted a somewhat hands-off approach. This traditional method typically involves evaluating incident rates, confirming insurance limits and mandating adherence to OSHA standards. However, my experience indicates that these measures alone are insufficient to effectively mitigate the risks a host organization may face, particularly in the event of a catastrophe.
To address this, it is imperative to move beyond basic compliance. Organizations should conduct thorough prequalification processes, including assessing a contractor’s safety management system, past safety performance and safety training practices. Additionally, implementing regular safety audits and ongoing performance evaluations can help organizations ensure that contractors maintain high safety standards throughout the contract’s duration. Engaging in open communication and collaboration with contractors regarding safety expectations can lead to a deeper understanding of risks and the shared responsibility for safety outcomes. By adopting a more integrated and rigorous approach to contractor safety management, utility organizations can significantly enhance their ability to safeguard their employees and the public from potential hazards.
Summary
This article emphasizes the importance of thoroughly assessing and refining critical operational processes to embed and support safety within utility organizations. It highlights the ANSI/ASSP Z10-2019 standard as a framework for implementing an effective SMS, focusing on areas such as operational planning, operational risk assessment, change management, procurement and contractor oversight. By fully integrating safety into all aspects of operations and fostering a culture of accountability, organizations can better protect their workforce and improve system reliability.
About the Author: Pam Tompkins, CUSP, CSP, is president and CEO of SET Solutions LLC. She is a 40-year veteran of the electric utility industry, a founding member of the Utility Safety & Ops Leadership Network and past chair of the USOLN executive board. Tompkins worked in the utility industry for over 20 years and has provided electric power safety consulting for the last 25 years. An OSHA-authorized instructor, she has supported utilities, contractors and other organizations operating electric power systems in designing and maintaining safety improvement methods and strategies for organizational excellence.
There is an elephant in the room that plays a role in the safety culture of our industry. That elephant needs to be exposed, even though it’s going to be tough to do.
Based on a less-than-official count, 12 to 14 lineworkers have lost their lives on the job over the past six months. The estimate is “less than official” because no dependable central recordkeeping authority exists other than OSHA, and OSHA can’t post an incident until they have either closed the investigation or formally cited the employer.
Some of you reading this have experienced a co-worker being killed on the job. In most cases, there is an emotional period afterward during which we process the event, grieve our lost brother or sister, and feel a great deal of concern and compassion for their family. But after a short time, that person becomes a singular part of the work location’s unfortunate history. I know there are exceptions to that rule. Still, a deceased employee’s co-workers are rarely privy to everything that takes place after a lineworker is fatally injured.
A Unique Perspective
I have a unique perspective on deadly industry incidents. For the past 25 years, I have served as an industry expert in both OSHA and civil litigations, some of which didn’t begin until three to five years after the incident. In each case, I examine every exhibit related to both the incident itself and the post-incident investigation. I review the employer’s investigation, the OSHA investigation, the coroner’s report and the reports from local law enforcement. I also investigate the incident myself. Lastly, I compare all this data to statutory safety requirements, consensus standards and best practices, as well as the employer’s training and safety programs, records and manuals.
At the time I am writing this, I am keeping files for more than 40 fatal industry incidents. “Fatal industry incidents” is a more palatable way of referring to lineworkers who were killed on the job. I want to offer iP readers details about all 40-plus incidents so that they are shared industrywide, helping to prevent them from ever happening again. But as a consultant and expert witness, I routinely sign nondisclosure and confidentiality agreements that are in effect throughout litigation and into perpetuity. Here is a tip, though: If you really want to know what happened in a specific case and have the name of the injured or deceased worker, you can search for it on OSHA’s Fatality Inspection Data page (www.osha.gov/fatalities).
Very few employers or employee groups know how to react when a fatal incident occurs at their worksite. Defensive tactics are one thing I have found common in every instance. Obviously, as an employer, it is a gut-punch to have an employee die on the job. I have witnessed heads of companies in tears during post-incident factual reviews. But they still have companies to lead, so decisions must be made about what to say and do. Then there are the co-workers. It is human nature to want to defend the memory of the deceased and be sympathetic and caring toward their family.
Yet time and again, I have found myself on the witness stand, sharing pointed observations about fatal industry incidents with both plaintiff and defense attorneys. I use industry standards to back up my observations, explaining the exact errors people made that resulted in death. Families of the deceased are almost always in the gallery during my testimony, listening. Two things in particular bother me about these circumstances. First, I know the family is being forced to endure the pain of their loss once again. Second, it is possible that the worker’s death and the resulting litigation could have been avoided entirely if the industry had honestly, publicly confronted its bad actions and actors.
And that brings us back to the elephant in the room.
Problematic Actions and Behaviors
Most readers are familiar with the idiom, but for those who aren’t, “the elephant in the room” refers to a significant if not obvious issue that people are reluctant to address because the discussion will almost certainly be uncomfortable. The specific elephant I’m referring to in these pages is our general refusal to candidly discuss problematic industry actions and behaviors – and it is hindering us from preventing incidents that seriously injure or kill workers.
On social media, I constantly see videos of crews doing stupid stuff. I decided to start a personal PowerPoint collection of photos snipped from these videos, which I use in my consulting work when explaining to lawyers what we do out on the line and the things that were done incorrectly in our cases. In less than a year, I have gathered 75 images of dangerous work methods, even if some of them don’t technically violate any OSHA rules. You might be curious about how I chose those images. Clearly, I think the actions in the videos are wrong, but I was primarily motivated to select the images because each of them features an activity that also killed a lineworker in one of my many files. Keep in mind that these instances aren’t obscure in nature; they routinely occur in the field and bear repeated responsibility for avoidable incidents. Several of my colleagues who also serve as litigation consultants have the same opinion and experience as I do. And while I have commented on these social media videos, my input was not appreciated by numerous industry workers. That disrespect is precisely how the elephant in the room continues to endanger our workforce.
Conclusion
Some companies and employees have taken on the very serious work of honestly evaluating incidents without any preconceived notions or hidden agendas. I have attended dozens of meetings with utilities and contractors during which honest conversations were had about what happened and how they got to that point. The discussions led to subtle changes in training, protocols, rules and accountability that will almost certainly have a lasting impact on the safety and health of the workforce.
We can grieve the loss of an employee and be sympathetic toward their family while also telling the truth about what happened. These actions are not mutually exclusive. Yet rarely have I investigated a fatal incident that did not involve co-workers who were reticent to share their versions of what happened. Some have even gone as far as covering for mistakes that were made.
The bottom line is that it does no one any good if we don’t learn the real lessons that an honest incident evaluation can provide. We also do a disservice to the deceased worker’s memory when we take a less-than-candid approach to the investigation. The only positive outcome from an on-the-job fatality is ensuring that it can never happen again – because we learned lessons by being completely truthful and then passed the lessons on to the next generation of lineworkers.
About the Author: After 25 years as a transmission-distribution lineman and foreman, Jim Vaughn, CUSP, has devoted the last 28 years to safety and training. A noted author, trainer and lecturer, he is a senior consultant for the Institute for Safety in Powerline Construction. He can be reached at jim@ispconline.com.
PPG is equally as important today as it was a century ago, providing lineworkers with a critical safeguard against electrical hazards.
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protect…
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The grea…
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash la…
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational per…
PPG is equally as important today as it was a century ago, providing lineworkers with a critical safeguard against electrical hazards.
Part 1 of this article began with discussion of the first American power systems, when lineworkers initially encountered the hazards of working on de-energized lines (see https://incident-prevention.com/blog/the-evolution-of-personal-protective-grounding-part-1/). This led to early personal protect…
Electrical workers must recognize that ‘avoid contact’ requires them to rubber up or cover up – including when contact is possible with secondary voltages.
For decades, air has been used to effectively and inexpensively maintain phase-to-phase and phase-to-ground clearances of overhead distribution and transmission power lines and electrical equipment. Air’s extremely high resistance offers excellent protection against the passage of current. The grea…
Labels and PPE must be part of a larger system of worker protection that integrates all levels of the hierarchy of controls.
Arc flash labels are a commonplace requirement for photovoltaic (PV) projects. However, arc flash studies and the resulting labels are sometimes treated as check-the-box exercises. In my experience as an engineer, I have found that questions are rarely asked regarding integration of PV arc flash la…
Utility organizations must thoroughly assess and refine their critical operational processes to effectively support employee and public safety.
The first four articles in this six-part series outlined the significance of an organizational safety management system (SMS) that involves all employees. They emphasized effective risk mitigation through a well-developed plan for continuous improvement, with a focus on human and organizational per…