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Conduit

HP&D news and information blog

Hood Patterson & Dewar Named 2019 Commissioning Giant

By Conduit

Hood Patterson & Dewar is pleased to be among the 25 firms named to Consulting-Specifying Engineer’s list of 2019 Commissioning Giants. New to the list this year, HP&D reported commissioning revenue of $12.5 million. Established in 1982, HP&D remains widely regarded as a leader in electrical and mechanical testing, commissioning, and engineering services. HP&D is a wholly-owned subsidiary of Patterson & Dewar Engineers, Inc., which has specialized in designing and evaluating vital power delivery infrastructures…

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December 4, 2019
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Hilton Mills Highlights Potential Safety Risks Identified During Field Verification

By Conduit

Hilton Mills is a featured speaker at CEATI International’s 2019 Grounding and Lightning Conference on October 9th in Houston, TX. The conference brings together leading subject matter experts from around the world. Hilton will present What Lies Beneath: Testing the Safety of Aging Grounding Systems, during which he will discuss the fall of potential (FoP) and computer-based test instrument (CBTI) methods for testing ground grids, common pitfalls encountered when testing energized electrical substations, plants, and…

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September 25, 2019
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NETA Weighs in on Grounding System Testing

By Conduit

The Spring issue of NETA World contains an interesting article on testing grounding systems written by regular contributor, Jeff Jowett, a Senior Applications Engineer for Megger. Jowett explains why, “for large and complex grounding systems,” SmartGround® Multimeter (SGM) in the hands of a qualified grounding specialist “affords incontestable results.”  

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May 23, 2019
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Arc Flash Awareness Training – June 28th in Atlanta, GA

By Conduit, uPDate

Join OSHA-Authorized General Industry Trainer David Rewitzer, PE, CEM of Hood Patterson & Dewar (HP&D) on Friday, June 28, 2019 for a 1-day Arc Flash Awareness seminar during which participants will learn about the nature of the arc flash problem, OSHA position and enforcement, arc flash labeling, NFPA-70 2018 changes, PPE requirements, and more. The class will take place from 7 a.m. to 3 p.m. (lunch will be provided) on Friday, June 28th in the P&D Seminar Room at 850…

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April 15, 2019
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Your Data Center’s Hidden (and Shocking) Potential

By Conduit

As data center facilities increase in size, complexity, and energy consumption, new data center projects often require dedicated substations. When that is the case, the data center becomes an extension of the substation and is subject to its same inherent risks.

Regardless of who owns the substation, the risks to personnel and property remain the same – damaging or potentially lethal voltages caused by line-to-ground faults and lightning strikes. Read more…

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January 29, 2019
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Conductor Licking and Fall of Potential

By Conduit, uPDate

Since the mid-twentieth century, the physical world around us has changed dramatically, so why is a grounding system test method adopted nearly 75 years ago still so widely used today? And what are the inherent problems when using an antiquated approach in the modern world? Read more…

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September 21, 2018
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Earth Grids Are Easy… Or Are They?

By Conduit, uPDate

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…

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September 18, 2018
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Low ∆T Ate My Chiller Capacity

By Conduit

When Facility Operator Bob’s four 1000-ton chillers couldn’t support the facility’s cooling load, he turned to HP&D to figure out why. Our mechanical team thought that maybe the problem was speed; perhaps the water was moving through the system too quickly and needed to be slowed down. But is it really possible that less flow could mean more cooling? Read more to find out…

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August 31, 2018
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Defensive Driving Course

By Conduit, uPDate

    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 videos with real-life driver simulations and hazard recognition scenarios. This course will discuss: • Defensive driving techniques • Safe driving behaviors • Georgia traffic laws and violations • Sharing the road with other drivers and motorcyclists • Alcohol/drug…

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July 31, 2018
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