Tag Archives: January

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Outdoor Deicing & Snow Melting

“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 First Draft of the 2026 NEC will be received until August 28th.

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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

 

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.

Electrical heat tracing: international harmonization-now and in the future

 

Electrical heat tracing: international harmonization-now and in the future

C. Sandberg

Tyco Thermal Controls

N.R. Rafferty – M. Kleinehanding – J.J. Hernandez

E.I. DuPont de Nemours & Company, Inc 

 

Abstract:  In the past, electrical heat tracing has been thought of as a minor addition to plant utilities. Today, it is recognized as a critical subsystem to be monitored and controlled. A marriage between process, mechanical, and electrical engineers must take place to ensure that optimum economic results are produced. The Internet, expert systems, and falling costs of instrumentation will all contribute to more reliable control systems and improved monitoring systems. There is a harmonization between Europe and North America that should facilitate design and installation using common components. The future holds many opportunities to optimize the design.

CLICK HERE to order complete paper

 


Heat Tracing Installation

Industrial electroheating and electromagnetic processing

Pipe Heating

Heat Tracing

How to Care for Horses in the Winter

 

“No hour of life is wasted that is spent in the saddle.”
— Winston Churchill

 

Utah


Gulliver’s Travels

…”The curiosity and impatience of my master were so great, that he spent many hours of his leisure to instruct me. He was convinced (as he afterwards told me) that I must be a Yahoo, but my teachableness, civility and cleanliness, astonished him; which were qualities altogether opposite to those animals…”


 

Rewind: Animals 100

Standards January: Language

“Language is the only homeland”
— Czesław Miłosz (Nobel Laureate, 1980)

Aphrodite and Hermes (Messenger of the gods)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

We could hasten agreement on technical solutions if partisans setting best practice standards could agree upon what we are talking about.  Then again, the meaning of This or That can only be understood in context.  All too frequently, when opposing partisans sense they are on the losing side of debate, they change the vocabulary or the fact set and we have to start all over again.

We gather our work on language standards over the past 30-odd years, starting with the definition of “Service Point” in the 1999 National Electrical Code and the 2002 National Electric Safety Code.  In recent years, engineers have been challenged by finding common agreement on what a “microgrid” is.  The dynamics of the struggle for competing stakeholders to agree on how to make educational settlements simpler, safer, lower-cost and longer-lasting is virtually identical to the struggle to agree on the meaning of modern English language in other domains.

The term “political correctness” was given currency when President George H.W. Bush explained the peril at the University of Michigan in 1992.  Its peril has only expanded since.

Design Standard Readability

Definition: “Developed versus Developing Country”

Electropedia: The World’s Online Electrotechnical Vocabulary

Noam Chomsky (University of Pennsylvania Doctoral Thesis): Transformational Analysis

Language Proficiency

Group A Model Building Codes


Hilary Clinton Suddenly Speaks African American English Whilst Quoting the Bible

Bloomberg Originals: Hilary Clinton’s Accent Evolution

“I shall always be a common ignorant girl, and in my station I have to be respectable.”

— Eliza Doolittle, from Pygmalion (George Bernard Shaw)

 

Western Michigan University: My Fair Lady (Livecast from Lincoln Center)


1984

Lingua Franca


DEI: Democrat President Joe Biden’s United States Supreme Court Appointment Does Not Know the Definition of “Woman”

African-American Vernacular English and education

 

“A great deal of intelligence can be invested in ignorance

when the need for illusion is deep.”

Saul Bellow (Seize the Day)


National Electrical Definitions

ASHRAE Terminology: A Comprehensive Glossary of Terms for the Built Environment

Qu’est-ce qu’une nation?


History of the English Speaking Peoples

Jean Piaget:”The Language and Thought of the Child” (1926)

Words Matter

The Guy Who Over-Pronounces Foreign Words

Travels with the Sundry Folk

Daniel Patrick Moynihan: “The Negro Family: The Case for National Action”

Banished Words 2024


Standards January | Language

Industrial electroheating and electromagnetic processing

The global standards for heat tracing systems are developed by IEC Technical Committee 27.  The scope of work for this committee is reproduced below:

Standardization in the field of industrial equipment and installations intended for electroheating, electromagnetic processing of materials and electroheat based treatment technologies Note: The scope of interest covers industrial installations with the use of the following equipment: – equipment for direct and indirect resistance heating; – equipment for electric resistance trace heating; – equipment for induction heating; – equipment using the effect of EM forces on materials; – equipment for arc heating, including submerged arc heating; – equipment for electroslag remelting; – equipment for plasma heating; – equipment for microwave heating; – equipment for dielectric heating; – equipment for electron beam heating; – equipment for laser heating; – equipment for infrared radiation heating. The list presents typical examples of equipment and its applications and is not exhaustive.

CLICK HERE for the link to the TC 27 Strategic Business Plan

Titles in this committee’s bibliography appears to be stable.   As with all IEC titles, they are relatively narrow in scope compared with the titles promulgated by most US standards developing organizations.  Our interest lies primarily in the application of this technology within and around education community buildings.

While heat tracing generally goes un-noticed it is an essential part of cold weather safety.  It is wise to keep pace with its evolution with innovation in materials and controls with the lead.

We maintain this committee’s work on the standing agenda of our seasonal Snow & Ice colloquia; along with US standards developed by UL, IEEE, NEMA, NFPA, ICC, ASHRAE and a few others.  We also collaborate with the IEEE Education & Healthcare Facilities Committee on this topic.  See our CALENDAR for the next online meeting; open to everyone.

 

Issue [18-332]

Category: Electrical

Colleagues: Mike Anthony, Lorne Clark, Jim Harvey

 

LSU

King’s Cake

Standards Louisiana

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