IES Standards in Public Review
— Charles Louis de Secondat, Baron de La Brède et de Montesquieu
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
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.
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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:
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.
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
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Named after Rear Admiral John A. Dahlgren (1809-1870) an influential figure in the development of naval ordnance during the United States Civil War. It served as an armory and drill hall for midshipmen. Its open space was ideal for indoor drills and military exercises.
The hall was constructed between 1899 and 1903. Its design was overseen by Ernest Flagg, a prominent architect who designed several buildings at the Naval Academy. Today it houses the Drydock Restaurant, a gathering place for midshipmen, faculty, and visitors.
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