Tag Archives: D6

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Stray Voltage: Sources and Solutions

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

Fish and Chips and the British Working Class

“Fish and Chips” | Fred Laidler (1918–1988)

Fish and Chips and the British Working Class, 1870-1930

Fish and chips was in many ways the pioneer fast-food industry.  It became an essential component of working-class diet and popular culture in parts of London, and over wide areas of industrial midland and northern England and southern Scotland, in the early decades of the twentieth century…I propose to argue that the fish and chip trade was not only important enough in itself to justify sustained historical analysis, but also that it provides a useful vantage point for examining important changes in British society more generally.”

— John Walken, 1998, Journal of Social History


Wild Mountain Tyme

Also widely known as “Will Ye Go, Lassie, Go?” or “Purple Heather” is a beloved folk song with roots in both Scottish and Irish traditions. It’s a romantic invitation to wander the hills and pick wild mountain thyme (a fragrant herb also called wild thyme or “purple heather” in some versions), symbolizing love and the beauty of nature.

Historian Richard Miniter interprets America’s cultural and political foundations as stemming from four distinct English religious utopias—coercive visions of ideal societies—brought by settlers during the colonial era, rooted in the ideological divides of the English Civil War (Puritans vs. Royalists/Cavaliers).

  1. Puritans (Roundheads) from East Anglia landed in New England (e.g., Massachusetts). They viewed liberty as the freedom to impose moral virtue and godly order on society, creating tightly regulated communities focused on communal piety and moral enforcement.
  2. Cavaliers (Royalists/Anglicans) from southwest England settled in Virginia and the South. They emphasized hierarchical order, aristocratic values, and loyalty to established authority, building plantation-based societies with Anglican traditions.
  3. Quakers and other dissenters (often from the West Midlands) arrived in the Middle States (e.g., Pennsylvania, New York, Delaware). They promoted religious tolerance, pacifism, and egalitarian ideals in diverse, pluralistic colonies.
  4. Borderers/Scots-Irish Presbyterians from the English-Scottish borderlands first landed in the backcountry regions of the Appalachian frontier; thereafter migrating deeper into the new territories of the Ozark Mountains Missouri. They brought a rugged, clan-based, individualistic ethos with Calvinist influences, valuing personal honor and resistance to centralized control.

These four groups’ competing visions—of imposed virtue, hierarchy, tolerance, and frontier independence—created enduring regional tensions that still shape modern American society, politics, and debates over freedom and governance.  This view enlightens understanding of why the United States remains in one piece; however tenuous.

“A republic madam, if you can keep it” — Benjamin Franklin

 

The modern Democratic Party traces its cultural and ideological roots to the Roundheads from the English Civil War. These were the ideological, intolerant, legalistic faction that sought to impose moral virtue and godly order on society, often through coercive means like censorship and value-shaping institutions (e.g., schools, colleges and government programs fortified by battalions of lawyers ).

Miniter links this to contemporary Democrats’ emphasis on identity politics, political correctness (which he calls a form of class warfare), and paternalistic efforts to mold citizens’ views—through regulation and ownership of legacy and electronic media.

In contrast, he sees Republicans drawing more from Cavalier (hierarchical, traditional) and Borderer (individualistic, anti-authority) traditions which conflict with the Leftist Immersion of United States public higher education of which most international students are hardly aware.

Missouri

The “Sugaring” Season

Standards Vermont

Vermont is the largest producer of maple syrup in the United States, and the maple syrup industry is an important part of the state’s economy and culture. Vermont maple syrup is renowned for its high quality and distinctive flavor, and many people around the world seek out Vermont maple syrup specifically.

The maple syrup industry in Vermont is primarily made up of small-scale family farms, where maple sap is collected from sugar maple trees in early spring using a process called “sugaring.” The sap is then boiled down to produce pure maple syrup, which is graded according to its color and flavor. Vermont maple syrup is graded on a scale from Grade A (lighter in color and milder in flavor) to Grade B (darker in color and more robust in flavor).

The Vermont maple syrup industry is heavily regulated to ensure quality and safety, and the state has strict standards for labeling and grading maple syrup. In addition to pure maple syrup, many Vermont maple producers also make maple candy, maple cream, and other maple products.

University of Vermont Facilities Management

Vermont

Animal Safety

“One of the Family” 1880 | Frederick George Cotman

NFPA 150 Fire and Life Safety in Animal Housing Facilities Code has entered its s025 revision cycle.   Many education communities are responsible for animal safety in academic units, research enterprises. museums and even — as in the United Kingdom — large farm animals that wander freely on campus with students, faculty and staff.  The number of colleges and universities that permit students to live with their pets has expanded; and with it the responsibilities of university administration.

From the document scope:

This standard shall provide the minimum requirements for the design, construction, fire protection, and classification of animal housing facilities.  The requirements of NFPA 150 recognize the following fundamental principles:

(1) Animals are sentient beings with a value greater than that of simple property.

(2) Animals, both domesticated and feral, lack the ability of self-preservation when housed in buildings and other structures.

(3) Current building, fire, and life safety codes do not address the life safety of the animal occupants. The requirements found in NFPA 150 are written with the intention that animal housing facilities will continue to be designed, constructed, and maintained in accordance with the applicable building, fire, and life safety codes.

The requirements herein are not intended to replace or rewrite the basic requirements for the human occupants. Instead, NFPA 150 provides additional minimum requirements for the protection of the animal occupants and the human occupants who interact with those animals in these facilities. 

 

A full description of the project is linked below:

Fire and Life Safety in Animal Housing Facilities Code

Access to the 2025 Edition is linked below:

FREE ACCESS NFPA 150

We provide the transcript of the back-and-forth on the current 2022 edition to inform how education communities can contribute to the improvement of this title; a subject that stirs deep feelings about animal safety in research enterprises.

NFPA 150 First Draft Agenda

NFPA 150 Second Draft Report

Public comment on the Second Draft of the 2025 Edition will be received until March 27, 2024.   

We have been advocating risk-informed animal safety concepts in this document since the 2013 Edition and have found that it is nearly impossible to overestimate the sensitivity of educational communities to the life safety of animals — either for agriculture or medical research.

We maintain the entire NFPA catalog on the standing agenda of our Prometheus colloquia.  See our CALENDAR for the next online meeting; open to everyone.

"i thank You God for most this amazing day:for the leaping greenly spirits of trees and a blue true dream of sky;and for everything which is natural which is infinite which is yes" -- e.e.cummings ('Seventy-One Poems' 1950)

 

Issue: [11-1] and [19-5]

Category: Fire Protection, Facility Asset Management, Academic, Risk Management

Colleagues: Mike Anthony, Josh Elvove, Joe DeRosier

More:

Protecting Animals When Disaster Strikes

Animals 300


 


Bibliography:

25 Most Pet-Friendly Colleges

National Institute of Health: Policy on Humane Care and Use of Laboratory Animals

International Building Code: Section 304 (Business Group B): Animal hospitals, kennels and pounds

Terrestrial Animal Health Code

IEEE Guide for Animal Deterrents for Electric Power Supply Substations

ASHRAE Animal Facilities

IEEE Livestock Monitoring System

Ventilation Design Handbook on Animal Research Facilities

HVAC Design in Animal Facilities

USDA Animal Welfare Information Center

ISO Assistance Dogs

US Department of Agriculture: Animal Welfare Act and Animal Welfare Regulations

S. 4288: Reducing Animal Testing Act

Guaranteeing safety of animals under risk of fire: conceptual framework and technical issues analysis

Protecting Animals When Disaster Strikes

 

Fireplace Safety


Many accommodations such as dormitories, fraternities and sororities have working fireplaces — wood burning and natural gas.  Community spaces such as student unions, libraries and recreation spaces also have fireplaces as a central feature.

The purpose of NFPA 211 is to reduce fire hazards by discovering and promulgating best practice for the safe removal of flue gases, the proper installation of solid fuel-burning appliances, and the correct construction and installation of chimneys, fireplaces, and venting systems.  The current 2019 Edition is linked below:

Free Access: NFPA 221 Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances

The 2024 has been released.  To guide our inquiry into safety and sustainability concepts for the 2027 Edition we like review the developmental transcripts of previous edition:

Public Input Report

Second Revisions Report

Public comment on the First Draft of the 2027 Edition will be received until June 3, 2025. 

Public comment on the Second Draft of the 2027 Edition will be received until March 31, 2026. 

We encourage facility managers to recommend improvements to this standard by setting up a (Free) NFPA account the link below:

Online submission of public input and public comments

We maintain this standard on our periodic Prometheus and Housing colloquia.  Consult our CALENDAR for the next online meeting, open to everyone

Link to parent standard:

Code ignis MMXXVII

NFPA 211: Articles and News

University of Rochester Fireplace Safety

American Gas Association: How Natural Gas Fuels Your Holiday Traditions

Natural Gas Transmission & Distribution

 

Winter Birds


Birds in Winter

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