Farm Electrical Power

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Farm Electrical Power

September 3, 2024
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ACTION ITEMS:

Article 547: Agricultural Buildings

Public Input with Responses from CMP-7 (Start at PDF Page 187)

Public Input with Responses from CMP-2 Article 220 Part V: Farm Load Calculations (Start at PDF Page 28)

Related: National Electrical Safety Code (Higher Voltage Distribution Wiring from Merchant Utility to Off-Campus Agricultural Outbuildings)

Sunday, Animal, Farm, Agri

Many land grant colleges and universities are stewards of agricultural facilities that require reliable electrical power that is safe and sustainable for livestock and animal habitat for sporting.

FREE ACCESS: 2023 National Electrical Code

The premise wiring rules for hazardous university owned buildings have been relatively stable.  Electrical professionals are guided by:

  1. Farm Load Calculations of Part V of Article 220,
  2. Corrosion mitigation with appropriate specification of power chain wiring
  3. Stray voltage and the equipotential plane
  4. Interactivity with regulated utility power sources.

Public response to the First Draft of the 2026 National Electrical Code will be received until August 28, 2024.  We coordinate our approach to the entire NFPA electrical suite with the IEEE Education & Healthcare Facilities Committee which meets 4 times monthly.  We typically refer to previous transcripts of technical committee actions to inform any changes (improvements) that we propose, if any.

2026 National Electrical Code Workspace

We maintain this issue on the standing agenda of our Power and Nourriture (Food) colloquia.  Feel free to join us with the login credentials at the upper right of our home page.


More:

2028 National Electrical Safety Code

Stray Voltage: Sources and Solutions

University of Nebraska: G87-845 Electrical Systems for Agricultural Buildings (Recommended Practices)

Cornell University Agricultural Safety and Health Program

Mike Holt

Fred Hartwell

National Safety Council  (22 deaths by electrocution on farms per 100,000 in 2017)

National Agricultural  Safety Database

 

Stray Voltage: Sources and Solutions

September 3, 2024
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Michigan State University

 

Stray Voltage: Sources and Solutions

Truman C. Surbrook – Norman D. Reese – Angela M. Kehrle

 

Abstract.  Stray voltage is caused by voltage drop and ground faults and may have its origin on the primary electrical distribution system or on the customer’s secondary electrical system. The rms value of the neutral-to-earth voltage along a primary distribution line may be at a value of zero some distance from the substation depending on the condition of the conductor resistances, grounding resistances, and the amount of load. Neutral-to-earth resistance is not the cause of stray voltage; however, the value of this resistance to earth at a particular location will affect the level of stray voltage. A four-wire single-phase feeder system supplying farm buildings from a single metering point is effective in preventing on-farm secondary neutral voltage drop, provided the four-wire system is extended to all farm loads, and provided no high-magnitude ground faults are present. Isolation of the primary and secondary neutral systems at the distribution transformer is effective in preventing off-farm sources from entering the customer’s system. This separation may be accomplished using a number of commercially available devices.

CLICK HERE for access to the entire paper

Colloquy (September)

September 2, 2024
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Open agenda; Not Too Organized. Whatever anyone wants to talk about.  We do meet once a month like this.  Use the login credentials at the upper right of our home page.

Fall Hours at our State Street Office: 8:30 AM – 4:00 PM

Join us for lunch 11:45 AM – 1:15 PM every Third Wednesday

University of Michigan Business School Executive Dining Room

We explain changes to our syllabus given that five conferences we attend will happen mid-September through mid-November: ANSI (Washington, DC), IEC (Edinburgh, Scotland), NFPA (Redondo Beach, California) and IEEE (Long Beach, California).   Mike will be out of the office with sporadic availability.  The front desk will be open.  Sanne Clare will take phone calls September 27 through October 4.

Retrodiction

Education & Healthcare Facility Electrotechnology Committee

 

 

Federal Participation in Consensus Standards

September 2, 2024
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“City of Washington from Beyond the Navy Yard” | George Cooke (1833)

 

The White House Office of Management and Budget released a revision of OMB Circular No. A-119, Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities.  According to the announcement:

OMB has issued a revision of Circular A-119 in light of changes that have taken place in the world of regulation, standards, and conformity assessment since the Circular was last revised in 1998.  OMB’s revisions are meant to provide more detailed guidance to agencies to take into account several issues, including the Administration’s current work in Open Government, developments in regulatory policy and international trade, and changes in technology.

The response by ANSI is available at the link below:

ANSI Response OMB A-119 050614

The degree to which leading practice can be discovered and promoted by industries themselves is a policy issue upon which good minds will disagree.   Few nations disagree that innovation is faster and more enduring from the workpoint (or the point of consumption) up, but markets are not perfect instruments for discovering the greater good.  At a speech given at the University of Michigan in 2015 , S. Joe Bhatia, CEO of the American National Standards Institute, expands upon this point in the short videoclip below:

Issue: [16-18]

Contact: Mike Anthony, Christine Fischer, Jack Janveja, Richard Robben

Category: Federal Regulation

 

A Blockchain-based decentralised university

September 2, 2024
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Blockchain is a decentralized, immutable, and transparent digital ledger that securely records and verifies transactions across multiple computers or nodes. It operates through a network of participants who collectively validate and store each transaction, creating a chain of interconnected blocks. Each block contains a unique cryptographic hash that links it to the previous block, ensuring data integrity.

The distributed nature of blockchain eliminates the need for intermediaries, increases security, and fosters trust among participants. It has applications beyond cryptocurrencies, enabling efficient and reliable solutions in various industries such as finance, supply chain management, healthcare, education and accreditation.

John Domingue | TEDxOpenUniversity:

“I believe that with blockchain technology we can create a radically new type of university: a DAO University. A DAO is a Decentralised Autonomous Organisation which operates with no central control and no humans in the loop and are based on Smart Contracts: pieces of computer code on a blockchain which can represent and enact financial and legal contracts. ”

 

 

Miguel de Cervantes (Don Quixote): “Ladran Sancho, señal que cabalgamos”  

Let the dogs bark Sancho, it is a sign that we’re moving forward.”

Blockchain & Distributed Ledger Technologies

Accreditation 200

Evensong “Believe Me, If All Those Endearing Young Charms”

September 1, 2024
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“Believe Me, If All Those Endearing Young Charms” is a popular Irish folk song with lyrics written by the Irish poet Thomas Moore. It was first published in 1808 as part of a collection of Moore’s works called “Irish Melodies.” The lyrics of the song are based on a poem by the Irish poet Anne Boleyn (c. 1747–1801).

The melody is traditional Irish, and it is often performed as a slow air or a ballad. The song expresses themes of love, fidelity, and the enduring nature of true affection. Over the years, it has been recorded by many artists and remains a beloved classic in the folk music repertoire.

Illinois

Ice Cream at the Rock

September 1, 2024
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“The only emperor is the emperor of ice cream”

— Wallace Stevens

 

Michigan Central

The invention of ice cream, as we know it today, is a product of historical evolution, and there isn’t a single individual credited with its creation. Various cultures and civilizations throughout history have contributed to the development of frozen treats resembling ice cream.

One of the earliest records of frozen desserts can be traced back to ancient China, where people enjoyed a frozen mixture of milk and rice around 200 BC. Similarly, ancient Persians and Arabs had a tradition of mixing fruit juices with snow or ice to create refreshing treats.

In Europe, frozen desserts gained popularity in the 17th and 18th centuries, and it was during this time that the more modern version of ice cream, made with sweetened milk or cream, began to take shape. During this period, ice cream became more widely accessible and enjoyed by the nobility and upper classes.



MSU Extension: Dairy Store

MSU Infrastructure Planning and Facilities

To produce ice cream on a commercial scale, several key pieces of infrastructure and equipment are necessary. The specific requirements may vary depending on the production capacity and the type of ice cream being produced, but the basic infrastructure typically includes:

  1. Manufacturing Facility: A dedicated space or building is needed to house all the production equipment and storage facilities. The facility should comply with local health and safety regulations and be designed to maintain the required temperature and hygiene standards.
  2. Mixing and Blending Equipment: Industrial-scale mixers and blending machines are used to mix ingredients like milk, cream, sugar, stabilizers, emulsifiers, and flavorings. These machines ensure that the mixture is homogenized and consistent.
  3. Pasteurization Equipment: To ensure product safety and extend shelf life, ice cream mix needs to be pasteurized. Pasteurization equipment heats the mixture to a specific temperature and then rapidly cools it to destroy harmful microorganisms.
  4. Homogenizers: Homogenizers help break down fat molecules in the ice cream mix to create a smoother and creamier texture.
  5. Aging Vats: The ice cream mix is aged at a controlled temperature for a specific period, which allows the ingredients to fully blend and improves the ice cream’s texture.
  6. Freezers: Continuous freezers or batch freezers are used to freeze the ice cream mix while incorporating air to create the desired overrun (the amount of air in the final product). Continuous freezers are more commonly used in large-scale production, while batch freezers are suitable for smaller batches.
  7. Hardening and Storage Room: Once the ice cream is frozen, it needs to be hardened at a lower temperature to achieve the desired texture. Storage rooms are used to store finished ice cream at the appropriate temperature until distribution.
  8. Packaging Equipment: Equipment for filling and packaging the ice cream into various containers, such as cartons, tubs, or cones.
  9. Quality Control and Laboratory Facilities: A dedicated area for quality control testing, where ice cream samples are analyzed for consistency, flavor, and other characteristics.
  10. Cleaning and Sanitation Systems: Proper cleaning and sanitation systems are essential to maintain hygiene and prevent contamination.
  11. Utilities: Adequate water supply, electrical power, and refrigeration capacity are critical for ice cream production.

Food Code 2017

Food 500


Grandma’s Chicken Soup

September 1, 2024
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Nebraska

WRITTEN BY Kalani Simpson PUBLISHED May 25, 2021

 

Ingredients:

  • 1 5- to 6-pound stewing hen or baking chicken
  • 1 package of chicken wings
  • 3 large onions
  • 1 large sweet potato
  • 3 parsnips
  • 2 turnips
  • 11 to 12 large carrots
  • 5 to 6 celery stems
  • 1 bunch of parsley
  • Salt and pepper to taste

Directions:

  1. Clean the chicken, put it in a large pot and cover it with cold water. Bring the water to boil.
  2. Add the chicken wings, onions, sweet potato, parsnips, turnips and carrots. Boil about 1 and a half hours. Remove fat from the surface as it accumulates.
  3. Add the parsley and celery. Cook the mixture about 45 min. longer.
  4. Remove the chicken. The chicken is not used further for the soup. (The meat makes excellent chicken parmesan.)
  5. Put the vegetables in a food processor until they are chopped fine or pass through a strainer. Both were performed in the present study.
  6. Add salt and pepper to taste.

(Note: This soup freezes well.)  Matzo balls were prepared according to the recipe on the back of the box of matzo meal (Manischewitz).

PRINT Recipe

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