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Exploration of the Theory of Electric Shock Drowning
Jesse Kotsch – Brandon Prussak – Michael Morse – James Kohl
Abstract: Drowning due to electric shock is theorized to occur when a current that is greater than the “let go” current passes through a body of water and conducts with the human body. Drowning would occur when the skeletal muscles contract and the victim can no longer swim. It is theorized that the likelihood of receiving a deadly shock in a freshwater environment (such as a lake) is higher than the likelihood in a saltwater environment (such as a marina). It is possible that due to the high conductivity of salt water, the current shunts around the individual, while in freshwater, where the conductivity of the water is lower than that of the human; a majority of the current will travel through the individual. The purpose of this research is to either validate or disprove these claims. To address this, we used Finite Element analysis in order to simulate a human swimming in a large body of water in which electric current has leaked from a 120V source. The conductivity of the water was varied from .005 S/m (pure water) up to 4.8 S/m (salt water) and the current density through a cross sectional area of the human was measured. With this research, we hope to educate swimmers on the best action to take if caught in such a situation.
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Lucas Hyman is the co-author of “Sustainable On Site CHP Systems: Design, Construction and Operations” published by McGraw-Hill 2010 ISBN 978-0-07-160317-1, Co-Editor Martin Meckler is a graduate of the University of Michigan. Mike Anthony contributed Chapter 23 — Government Mission Critical – A combined FMECA and time value of money study on Critical Operations Power Systems.
Goss Engineering was one of the engineers for the University of California Merced; the first university campus with an energy infrastructure begun from “scratch”. Here, Lucas offers his insight into the subtle energy economic trade-offs between centralized and de-centralized systems.
LEARN MORE:
Backgrounder from 2007 ASHRAE conference presentation by Goss Engineering: Designing Sustainable CHP Systems
Today at the usual hour we take will take a broad view of the technical standards catalog of all military branches as they apply to the educational settings of each of the US military branches. Use the login credentials at the upper right of our home page.

“Overgrown military establishments are under any form of government inauspicious to liberty, and are to be regarded as particularly hostile to republican liberty.” Farewell Address, September 19, 1796.
United States defense standards are used to help achieve standardization objectives by the U.S. Department of Defense. Standardization is beneficial in achieving interoperability, ensuring products meet certain requirements, commonality, reliability, total cost of ownership, compatibility with logistics systems, and similar defense-related objectives. Defense standards are also used by other non-defense government organizations, technical organizations, and industry.
Military technical standards and public sector technical standards differ primarily in their purposes, scope, and requirements. Military standards — such as MIL-STD and MIL-SPEC — are designed to ensure high reliability, durability, and performance under extreme conditions, as they often pertain to defense systems, weaponry, and other critical applications. These standards prioritize security, robustness, and interoperability in challenging environments, and typically involve stringent testing and certification processes.
In contrast, public sector technical standards, like those developed by the International Organization for Standardization or the Institute of Electrical and Electronics Engineers, are geared towards broader civilian applications. They focus on safety, quality, efficiency, and compatibility for a wide range of industries, including manufacturing, technology, and services. These standards aim to facilitate trade, ensure consumer safety, and promote innovation and best practices. While public sector standards also emphasize reliability and performance, they are generally less rigid than military standards, reflecting a broader range of use cases and operational conditions.
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwB pic.twitter.com/GkAXrHoQ9T
— USPTO (@uspto) July 13, 2023
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