Tag Archives: February

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Du froid

“Weather is fate”

Charles Louis de Secondat, Baron de La Brède et de Montesquieu

“Road to Versailles at Louveciennes” 1869 Camille Pissarro

Heat tracing is a process used to maintain or raise the temperature of pipes and vessels in order to prevent freezing, maintain process temperature, or ensure that products remain fluid and flow through the system properly.

Heat tracing works by using an electric heating cable or tape that is wrapped around the pipe or vessel, and then insulated to help retain the heat. The heating cable is connected to a power source and temperature control system that maintains the desired temperature by regulating the amount of heat output from the cable. Heat tracing is commonly used in industrial applications where temperature control is critical, such as in chemical plants, refineries, and oil and gas facilities.

There are several types of heat tracing, including electric heat tracing, steam tracing, and hot water tracing, each of which have their own unique advantages and disadvantages. The selection of the appropriate type of heat tracing depends on the specific application and the required temperature range, as well as factors such as cost, maintenance, and safety considerations.

Today we review the literature for snow and ice management (and enjoyment) produced by these standards-setting organizations:

Accredited Snow Contractors Association

American Society of Civil Engineers

American Society of Mechanical Engineers

ASTM International

FM Global

Destructive Deep Freeze Strikes Cold and Hot Regions Alike

Institute of Electrical & Electronic Engineers

Electrical Heat Tracing: International Harmonization — Now and in the Future

International Code Council

International Building Code: Chapter 15 Roof Assemblies and Rooftop Structures

National Electrical Contractors Association

National Fire Protection Association

Winter is Coming: Is Your Facility Protected? (Holly Burgess, November 2022)

National Electrical Code: Articles 426-427

National Floor Safety Institute

Snow and Ice Management Association

Underwriters Laboratories

Manufacturers:

Chromalox Electrical Heat Tracing Systems Design Guide



It is a surprisingly large domain with market-makers in every dimension of safety and sustainability; all of whom are bound by state and federal regulations.

Join us at 16:00 UTC with the login credentials at the upper right of our home page.

There have been several recent innovations that have made it possible for construction activity to continue through cold winter months. Some of the most notable ones include:

  1. Heated Job Site Trailers: These trailers are equipped with heating systems that keep workers warm and comfortable while they take breaks or work on plans. This helps to keep morale up and prevent cold-related health issues.
  2. Insulated Concrete Forms (ICFs): ICFs are prefabricated blocks made of foam insulation that are stacked together to form the walls of a building. The foam insulation provides an extra layer of insulation to keep the building warm during cold winter months.
  3. Warm-Mix Asphalt (WMA): WMA is a type of asphalt that is designed to be used in colder temperatures than traditional hot-mix asphalt. This allows road construction crews to work through the winter months without having to worry about the asphalt cooling and becoming unusable.
  4. Pneumatic Heaters: These heaters are used to warm up the ground before concrete is poured. This helps to prevent the concrete from freezing and becoming damaged during the winter months.
  5. Electrically Heated Mats: These mats are placed on the ground to prevent snow and ice from accumulating. This helps to make the job site safer and easier to work on during the winter months.

Overall, these innovations have made it possible for construction crews to work through the winter months more comfortably and safely, which has helped to keep projects on schedule and minimize delays.

Outdoor Deicing & Snow Melting

Electrical Safety

“Snow at Argenteuil” | Claude Monet (1875)

Today our focus turns to outdoor electric deicing and snow melting wiring systems identified as suitable for the environment and installed in accordance with the manufacturer’s instructions.  They work silently to keep snow load from caving in roofs and icicles falling from gutters onto pedestrian pathways.

While the voltage and ampere requirement of the product itself is a known characteristic, the characteristic 0f the wiring pathway — voltage, ampere, grounding, short circuit, disconnect and control — is relatively more complicated and worthy of our attention.   Articles 426-427 of the National Electrical Code is the relevant part of the NEC

Free Access 2023 National Electrical Code

Insight into the ideas running through technical committee deliberations is provided by a review of Panel 17 transcripts:

2023 NEC Panel 17 Public Input Report (633 pages)

2023 NEC Panel 17 Public Comment Report (190 pages)

We hold Articles 427 in the middle of our priority ranking for the 2023 NEC.   We find that the more difficult issues for this technology is the determination of which trade specifies these systems — architectural, electrical, or mechanical; covered in previous posts.   Instead, most of our time will be spent getting IEEE consensus products in step with it, specifically ANSI/IEEE 515 and IEEE 844/CSA 293.

Comments on the Second Draft of the 2026 NEC will be received until April 18th.

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We collaborate with the IEEE Education & Healthcare Facility Committee which meets online 4 times per month in European and American time zones.  Since a great deal of the technical basis for the NEC originates with the IEEE we will also collaborate with IEEE Standards Coordinating Committee 18 whose members are charged by the IEEE Standards Association to coordinate NFPA and IEEE consensus products.

Issue: [19-151]

Category: Electrical, Energy

Colleagues: Mike Anthony, Jim Harvey, Kane Howard, Jose Meijer


LEARN MORE:

IEEE Standard for the Testing, Design, Installation, and Maintenance of Electrical Resistance Heat Tracing for Commercial Applications

844.2/CSA C293.2-2017 – IEEE/CSA Standard for Skin Effect Trace Heating of Pipelines, Vessels, Equipment, and Structures–Application Guide for Design, Installation, Testing, Commissioning, and Maintenance

 

Textiles

List of Technical Committees

“The Dressmaking Factory” 1881 Charles Ginnar

“Dwell on the beauty of life.

Watch the stars, and see yourself running with them.”

― Marcus Aurelius, Meditations

The consumer discretionary sector is among the largest economic sectors in every nation.   Consumer Discretionary is the term given to goods and services that are considered non-essential by consumers, but desirable if their available income is sufficient to purchase them.  Consumer discretionary goods include durable goods, apparel, entertainment and leisure, and automobiles.  The International Organization for Standardization administers leading practice discovery and promulgation of the standards in a core component of durable goods industry — textiles – through its Technical Committee 38.

We find continued student interest in these technologies so attention to the elevated hazards in research, instructional and display spaces require attention.   We recognize that not every student is interested in cleaning neural network data sets or learning Tensor Flow but wants to devote their energy to making the world a better place by making the world a more beautiful place.

From the ISO/TC 38 prospectus:

STRATEGIC BUSINESS PLAN ISO/TC 38 Textiles

“…Textiles are one of the most important and versatile commodities in the global economy. The textile industries involve provision of raw materials, preparation of fiber production, manufacture of yarns and fibres, manufacture of fabric formation, finishing processing including bleaching, dyeing, printing, coating, special chemical treatments, transformation of the fabric into clothing, upholstery, or industrial/technical textiles, and rope and netting formation. Therefore, the textile industry concerns a variety of entities such as suppliers of raw materials, processors, manufacturers, traders,  distributors, retailers, associated industries such as the laundry industry, government and educational establishments as well as consumers….

…One new field of innovation in the textiles is emerging as the smart textiles which cover either smart textile materials or smart textile systems, including some of them combining technologies with electronic textiles and wearable devices. The uses expected of the smart textiles extend over medical device, general product safety, textile labelling, etc. Our technical committee liaises for cooperation with other technical fields and be responsible for standardization of the textile field of smart textiles….”

Japanese Industrial Standards Committee is the Global Secretariat.   ASTM International is ANSI’s US Technical Advisory Group Administrator

Educators and students in the United States interested in participating in the development of this product should communicate directly with Jen Rodgers at ASTM International, Jen Rodgers ([email protected]).  We maintain all ISO consensus products on the standing agenda of our monthly International Standards teleconference; open to everyone.   See our CALENDAR for the next online meeting.

Standard Specification for 100 % Cotton Denim Fabrics

Wool Throw Project

Sheep and Wool

How to Grow Wool in Your Backyard

Hot chocolate vs. hot cocoa

Michigan Central § 2024 Net Position: $5.600B

Why Does The Modern World Make No Sense?

“…Hot cocoa and hot chocolate are terms that we often used interchangeably. Technically, hot cocoa and hot chocolate are as different as milk chocolate and bittersweet chocolate. Hot cocoa is made with cocoa powder, the way my mother made it when I was a kid. Hot chocolate is made from melting chocolate bars into cream…”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Plant science at your dinner table: Hot chocolate vs. hot cocoa

 

How to make the chemically perfect hot chocolate

Milk

Anthem “Seven Nation Army”

After moonlighting in several underground Detroit bands as a drummer, Jack White founded the White Stripes with fellow Detroit native and then-wife Meg White in 1997.  He graduated from Cass Tech High School and attended Wayne State University as a dramatic arts student; thereafter receiving an honorary degree; and since awarded eight Grammy Awards, among them, for his work on the soundtrack of “Cold Mountain”.

Detroit’s Wayne State University introduces world to Dr. Jack White

Rolling Stone: Jack White Saves Detroit Masonic Temple from Foreclosure

“Seven Nation Army”  is one of the most iconic and popular songs of the early 21st century and is routinely performed at athletic events at all levels in the United States.   Its view count on YouTube is closing in on 1 billion.  Several factors contributed to the song’s popularity:

Memorable Guitar Riff: The song is instantly recognizable for its distinctive and powerful guitar riff played by Jack White. The riff, created using a semi-acoustic guitar and an octave pedal, became an anthem for many music enthusiasts.

Catchy Chorus: The song features a catchy and memorable chorus with the repeated lyrics, “I’m gonna fight ’em off, a seven nation army couldn’t hold me back.” This repetition and simplicity added to its appeal and made it easy for listeners to sing along.

Sports and Pop Culture: “Seven Nation Army” transcended the music scene and found its way into various aspects of popular culture. The song became a favorite at sports events around the world, particularly in stadiums and arenas. Its use in sports contexts, such as football chants, contributed to its widespread recognition.

Critical Acclaim: The song received critical acclaim for its raw energy, innovative sound, and Jack White’s distinctive vocals. It won a Grammy Award for Best Rock Song in 2004 and became a defining track for The White Stripes.

Cover Versions and Remixes: The song’s popularity was further fueled by numerous cover versions and remixes by various artists across different genres. This contributed to its longevity and continued relevance in diverse musical contexts.

As a result of these factors, “Seven Nation Army” has endured as a cultural phenomenon, maintaining its popularity long after its initial release.


I’m gonna fight ’em off
A seven nation army couldn’t hold me back
They’re gonna rip it off
Taking their time right behind my back
And I’m talking to myself at night
Because I can’t forget
Back and forth through my mind
Behind a cigarette

And the message coming from my eyes
Says “Leave it alone”

Don’t want to hear about it
Every single one’s got a story to tell
Everyone knows about it
From the Queen of England to the Hounds of Hell
And if I catch it coming back my way
I’m gonna serve it to you
And that ain’t what you want to hear
But that’s what I’ll do

And the feeling coming from my bones
Says “Find a home”

I’m going to Wichita
Far from this opera forevermore
I’m gonna work the straw
Make the sweat drip out of every pore
And I’m bleeding, and I’m bleeding, and I’m bleeding
Right before the Lord
All the words are gonna bleed from me
And I will sing no more

And the stains coming from my blood
Tell me “Go back home”


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