NBR 5419: What is it and how to download it in PDF format
Introduction
If you are involved in the design, installation, inspection, maintenance or testing of lightning protection systems (LPS) in Brazil, you need to be familiar with the Brazilian standard NBR 5419. This standard establishes the requirements and guidelines for protecting structures, people and installations against lightning strikes. It also provides information on how to assess and reduce the risk of damage caused by lightning electromagnetic impulses (LEMP).
In this article, we will explain what NBR 5419 is and why it is important, what are the main changes and impacts of the updated version of NBR 5419 in 2020, and how to download it in PDF format. We hope this article will help you understand and comply with this standard and ensure the safety and reliability of your LPS projects.
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What is NBR 5419 and why is it important?
NBR 5419 is the Brazilian standard for lightning protection, issued by the Brazilian Association of Technical Standards (ABNT). It is based on the international standard IEC 62305, but with some modifications and adaptations to suit the Brazilian context. NBR 5419 was first published in 1993, then revised in 2005 and again in 2015. The latest version of NBR 5419 consists of four parts:
Part 1: General principles
Part 2: Risk management
Part 3: Physical damage to structures and life hazard
Part 4: Electrical and electronic systems within structures
NBR 5419 is important because it provides a comprehensive and updated framework for designing, installing, inspecting, maintaining and testing LPS in Brazil. It also helps to ensure the safety of people, structures and installations against the effects of lightning, which can cause fires, explosions, injuries, deaths, power outages, data losses, equipment failures and other damages. According to the National Institute for Space Research (INPE), Brazil has one of the highest rates of lightning incidence in the world, with an average of 77.8 million flashes per year between 2016 and 2019 . Therefore, complying with NBR 5419 is essential for reducing the risk of lightning-related accidents and losses.
What are the main changes and impacts of the updated version of NBR 5419 in 2020?
In June 2020, ABNT published a new edition of NBR 5419, with some changes and corrections from the previous version of 2015. The main changes are related to:
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The definition of terms and symbols
The calculation of ground flash density (Ng)
The selection of protection level
The methods of protection
The requirements for inspection and maintenance
The annexes with additional information
The impacts of these changes are mainly on the following aspects:
The risk assessment process becomes more accurate and detailed, taking into account more parameters and scenarios.
The protection level becomes an input rather than an output of the risk assessment, allowing more flexibility and optimization.
The methods of protection become more consistent and harmonized with IEC 62305, with some modifications for specific situations.
The inspection and maintenance procedures become more clear and rigorous, ensuring the effectiveness and durability of LPS.
The annexes provide more guidance and examples for applying the standard in different types of structures and situations.
These changes aim to improve the quality and performance of LPS in Brazil, as well as to align with the international best practices. However, they also imply some challenges for LPS professionals, who need to update their knowledge and skills, as well as their tools and software, to comply with the new version of NBR 5419.
How to How to download NBR 5419 in PDF format?
If you want to download NBR 5419 in PDF format, you have two options:
Buy the official version from ABNT's website . This is the most reliable and updated source, but it also has a cost. The price of each part of NBR 5419 ranges from R$ 200 to R$ 300, depending on the number of pages and the type of access (online or offline). You can also buy the complete set of four parts for R$ 800.
Download a free version from other websites . This is a more convenient and economical option, but it also has some risks. The free versions may not be the latest or the most accurate ones, and they may contain errors or omissions. You also need to be careful about the security and legality of the websites that offer these downloads.
Whichever option you choose, make sure you have a PDF reader software installed on your device, such as Adobe Acrobat Reader . This will allow you to open, view, print and save the PDF files of NBR 5419.
Conclusion
NBR 5419 is the Brazilian standard for lightning protection, which establishes the requirements and guidelines for protecting structures, people and installations against lightning strikes. It is based on the international standard IEC 62305, but with some modifications and adaptations to suit the Brazilian context. NBR 5419 was updated in 2020, with some changes and corrections from the previous version of 2015. These changes aim to improve the quality and performance of LPS in Brazil, as well as to align with the international best practices. However, they also imply some challenges for LPS professionals, who need to update their knowledge and skills, as well as their tools and software, to comply with the new version of NBR 5419. To download NBR 5419 in PDF format, you can either buy the official version from ABNT's website or download a free version from other websites, depending on your preference and budget.
FAQs
What is the difference between NBR 5419 and IEC 62305?
NBR 5419 is the Brazilian standard for lightning protection, which is based on the international standard IEC 62305. However, NBR 5419 has some modifications and adaptations to suit the Brazilian context, such as:
The use of different values for ground flash density (Ng) and lightning ground flash density (Ng) maps.
The use of different criteria for selecting protection level.
The use of different methods of protection for specific situations.
The use of different annexes with additional information.
How often should I inspect and maintain my LPS according to NBR 5419?
NBR 5419 specifies that LPS should be inspected and maintained at least once a year, or more frequently if required by local regulations or conditions. The inspection and maintenance should include:
A visual inspection of all components of LPS.
A measurement of earth resistance and earth potential rise.
A verification of continuity and bonding of conductors and connections.
A verification of functionality and integrity of surge protective devices (SPDs).
A verification of compliance with NBR 5419 requirements.
What are the benefits of complying with NBR 5419?
Complying with NBR 5419 can bring many benefits, such as:
Reducing the risk of damage and losses caused by lightning strikes.
Ensuring the safety of people, structures and installations against lightning effects.
Improving the reliability and performance of electrical and electronic systems within structures.
Avoiding legal liabilities and penalties for non-compliance.
Increasing customer satisfaction and trust.
What are the challenges of complying with NBR 5419?
Complying with NBR 5419 can also pose some challenges, such as:
Updating knowledge and skills on the latest version of NBR 5419.
Updating tools and software for risk assessment and design of LPS.
Investing in adequate materials and equipment for installation and testing of LPS.
Finding qualified and certified professionals for inspection and maintenance of LPS.
Keeping records and documentation of LPS activities.
Where can I find Where can I find more information and guidance on NBR 5419?
If you want to learn more about NBR 5419 and how to apply it in your LPS projects, you can consult the following sources:
The official website of ABNT , where you can find the latest news and updates on NBR 5419 and other standards.
The official website of INPE , where you can find the lightning data and maps for Brazil, as well as other resources on lightning research and education.
The official website of GSI , where you can find the software for risk assessment and design of LPS according to NBR 5419 and IEC 62305.
The official website of LPS Brasil , where you can find the association of LPS professionals in Brazil, as well as information on training, certification and events related to LPS.
The official website of IEC , where you can find the international standard IEC 62305 and other related standards and publications.
We hope this article has helped you understand what NBR 5419 is and how to download it in PDF format. If you have any questions or comments, please feel free to contact us. We are always happy to hear from you and assist you with your LPS needs. 44f88ac181
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