A grounding system’s purpose is to use the earth as a current-carrying conductor to dissipate noise currents and conduct dangerous lightning and power fault currents. Earth is a very good electrical conductor due to its mass and its availability to everyone at all locations throughout the world. This global access to the earth allows grounding systems installed on opposite sides of the world to connect. Read more…
Join Josh Kelly, CSP, SMS to learn techniques to avoid collisions and traffic violations. Drivers learn safe, responsible and lawful driving behaviors through a self-assessment risk survey, a series of learning activities and discussions, and…
Electricity is a serious workplace hazard, exposing employees to electric shock, burns, fires, and explosions. According to NFPA-70E, electrical shocks caused nearly 6000 fatalities from 1992 to 2012. Earn 8 CEU credits as David Rewitzer, PE, CEM…
Prior to the 2018 version, NFPA 70E simply cautioned that “greater emphasis may be necessary with respect to de-energizing” equipment with incident energy (IE) exceeding 40 cal/cm2, “when exposed to electrical hazards.” This nebulous direction was applied within the industry by simply labeling everything over 40 cals as “Dangerous – No PPE Exists.” In its new 2018 version, NFPA 70E eliminated this cautionary language. This may lead some to infer that working on energized equipment…
SmartGrid experts Michael Thesing and John McDonald bring more than 60 years of combined experience in this area, and share “real world” equipment and project examples to teach Supervisory Control and Data Acquisition (SCADA) with Advanced Applications as part of the Utility University® at DistribuTech®. The course takes place in room 211 at the Henry B. Gonzalez Convention Center in San Antonio, TX on Monday, January 22, 2018 (8 a.m. – 5 p.m.). It provides a comprehensive examination of electric utility SCADA systems, as well as adjacent technologies, techniques, and industry best practices…
On November 15 & 16 of this year, CEATI will host its 8th Annual Grounding and Lightning Conference in Arlington, VA. This open forum is supported by more than 35 participating utilities and facilitates information exchange…
Michael Thesing of Patterson & Dewar Engineers, Inc. (P&D) will present several aspects of the popular DNP3 SCADA protocol that are often misunderstood or underutilized. DNP3 continues to thrive in North America and internationally as…
By Michael Thesing Can you answer these three questions related to electric utility SCADA? Why are managed Ethernet switches considered “best practice” in modern SCADA systems? What are the five basic types of DNP3 data?…
OSHA-Authorized General Industry Trainer David Rewitzer, PE, CEM of Hood Patterson & Dewar will conduct a 1-day Arc Flash Awareness seminar during which participants will learn: Nature of the Arc Flash Problem OSHA Position and Enforcement Arc Flash…
Did you know that every substation, every subdivision, every highway, transmission line, rail station, industrial facility, playground, ball park, airport, runway… they all begin with Civil Engineering? Since 1947, P&D’s civil engineering teams have worked…
OSHA-Authorized General Industry Trainer David Rewitzer, PE, CEM of Hood Patterson & Dewar will conduct a 1-day Arc Flash Awareness seminar during which participants will learn: Nature of the Arc Flash Problem OSHA Position and Enforcement Arc Flash…
As part of its community outreach initiatives, P&D’s Millennial Committee elected to participate in the Adopt-A-Road program. Staff members gathered together one Saturday morning per quarter in order to “beautify” the area along Goshen Springs Road…
Patterson & Dewar Engineers, Inc. (P&D) is pleased to announce it has been selected as one of The Atlanta Journal Constitution’s Top Workplaces in Atlanta for 2015. The Top Workplaces are based solely on employee…
To celebrate Pi Day of the Century, P&D decided to take this once-in-a-lifetime opportunity – and stress eating – to a new level (check out the video: https://www.youtube.com/watch?v=-nOgydEOEOI&fmt=22). P&D’s fundraiser, PIE Day of the Century, raised money to…
