The National Institute of Standards and Technology is responsible for maintaining and disseminating official time in the United States. While NIST does not have a direct role in implementing clock changes for daylight saving time, it does play an important role in ensuring that timekeeping systems across the country are accurate and consistent.
Prior to the implementation of daylight saving time, NIST issues public announcements reminding individuals and organizations to adjust their clocks accordingly. NIST also provides resources to help people synchronize their clocks, such as the time.gov website and the NIST radio station WWV.
In addition, NIST is responsible for developing and maintaining the atomic clocks that are used to define Coordinated Universal Time (UTC), the international standard for timekeeping. UTC is used as the basis for all civil time in the United States, and it is the reference time used by many systems, including the Global Positioning System (GPS) and the internet.
Overall, while NIST does not have a direct role in implementing clock changes for daylight saving time, it plays an important role in ensuring that timekeeping systems across the country are accurate and consistent, which is essential for the smooth implementation of any changes to the system.
Abstract: Energy demand and supply all over the world is increasing in size and complexity. Anomalous conditions caused by failures in electrical components, human errors and environmental conditions result in electrical faults that can interrupt electricity flow. Substation automation requires precise time synchronization for a variety of Intelligent Electronic Devices for fault diagnosis. The quest for accurate and sequential time stamping of events compels power utility companies to adopt various techniques of time synchronization with an accuracy of a millisecond or a microsecond. Some works adopt the use of time synchronization techniques using protocols such as Network Time Protocol, Precision Time protocol, Simple Network Time Protocol and many more. This work presents time synchronization of IEDs using Modbus protocol and python programming language for a local substation. The system records the output data into a database and displays it on an application software. The time synchronization system was successful alternative for off network systems.
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
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.
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
Standard stitch work – standards for men’s clothing sizes trace back to the Civil War, but no one even attempted to fix the sizes for women until almost a century later, when they called on NIST. #NYFWpic.twitter.com/dFQVGknU3w
— National Institute of Standards and Technology (@NIST) February 13, 2021
“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:
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:
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.
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.
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.
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.
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.
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.
Located in the Mechanical Engineering Building this clock has been keeping time for over 120 years and its ticking can be heard throughout the building. The clock was built by the Seth Thomas Clock Company and was installed in 1904.
The clock’s mechanism is powered by weights that are wound up manually twice a week. It has a pendulum that swings back and forth, keeping time with remarkable accuracy. The clock is also equipped with a chime that rings every quarter hour, as well as a striking mechanism that sounds the hours.
Over the years, the clock has undergone several renovations and restorations to keep it in good working order. In 2009, the clock was fitted with an electric motor to assist in winding the weights, but it still operates primarily through mechanical means.
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwBpic.twitter.com/GkAXrHoQ9T
