Understand the electrical installations record book and its importance for safety and compliance in electrical systems.
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The Electrical Installations Record Book is the technical document required by NR 10 that brings together all the information needed to ensure the safety, traceability, and legal compliance of electrical systems in companies.
Also called PIE (electrical installations record book), it must contain diagrams, memorials, reports, training records, and the respective ART signed by a qualified electrical engineer.
More than a bureaucratic requirement, the PIE is the documentary foundation that proves the organization adopts safe practices in its installations, ensuring not only compliance with legislation, but also the protection of workers, equipment, and critical environments such as industries, hospitals, data centers, and power substations.
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What Is the Electrical Installations Record Book?
The electrical installations record book is an organized set of technical documents that gathers all essential information about the safety and operation of electrical systems in a company. It is provided for in NR 10, which establishes protection guidelines for activities involving electricity.
In practice, the electrical installations record book functions as an official repository: it contains everything from updated single-line diagrams to inspection reports, compliance reports, descriptive memorials, operating procedures, and training records for authorized professionals.
This document is mandatory for companies that have more complex electrical installations, such as industries, hospitals, data centers, and power substations, and serves as proof that the organization complies with regulatory requirements and maintains an active electrical safety management system.
Who Is Required to Prepare the Electrical Installations Record Book?
NR 10 establishes that all companies that have significant electrical installations or perform services involving electricity must keep the electrical installations record book up to date. This includes both organizations operating at low voltage and those dealing with medium and high voltage.
In general terms, the document is mandatory for:
- Industries and manufacturing plants, where there is a high concentration of equipment and power systems.
- Hospitals, clinics, and laboratories, where electrical continuity directly affects patient safety.
- Data centers and mission-critical environments, which depend on uninterrupted power to keep systems and digital services operating.
- Distribution substations and energy companies, where electrical failure can compromise the network as a whole.
- Public agencies, shopping centers, schools, and universities, where thousands of people circulate daily.
The responsibility for preparing and maintaining the electrical installations record book lies with the employer, who must appoint a qualified electrical engineer to sign the technical documentation and issue the corresponding ARTs. Workers, in turn, must be formally authorized and trained, with records included in the PIE.
What Must the Electrical Installations Record Book Contain?
The electrical installations record book must contain all documents necessary to prove the compliance of the installations with NR 10 and related technical standards (such as NBR 5410 and NBR 5419). It is a living repository that must be constantly updated according to modifications, expansions, or maintenance in the electrical infrastructure.
Checklist of mandatory items in the PIE
| Item | Description | Regulatory Basis |
|---|---|---|
| Single-line diagrams | Updated graphic representation of all circuits and feeders in the installation | NR 10 / NBR 5410 |
| Descriptive memorials and specifications | Technical details of electrical components and systems | NR 10 |
| Operating procedures | Instructions for de-energization, lockout and tagout (LOTO), maintenance, and inspections | NR 10 |
| Inspection and measurement reports | Periodic verification of grounding, continuity, and system integrity | NR 10 / NBR 5410 |
| Complementary technical reports | LPS (NBR 5419), grounding (NBR 5410), and others according to the environment | NR 10 / NBR 5419 |
| NR 10 training records | Certificates of basic and SEP qualification, with periodic refreshers | NR 10 |
| Risk analyses | Documented assessment of hazards and control measures before interventions | NR 10 |
| ART (Technical Responsibility Annotation) | Issued by a qualified electrical engineer and registered with CREA | Law 5.194/66 / NR 10 |
Technical Responsibility and ART
The electrical installations record book only has legal validity when it is linked to a qualified professional, that is, a CREA-registered electrical engineer. This professional is responsible for preparing, reviewing, and updating the documentation, ensuring that the technical content complies with NR 10 and complementary standards such as NBR 5410 and NBR 5419.
The formalization of responsibility is carried out through the ART (Technical Responsibility Annotation), a document that ensures the service was performed by a legally qualified professional. Without the ART, the PIE loses its legal value and the company becomes vulnerable to penalties from the Ministry of Labor, in addition to lacking technical support in the event of accidents.
Keeping the electrical installations record book up to date and with a valid ART is not only a regulatory obligation, but also a corporate governance practice. It serves as evidence that the company adopts electrical safety measures, protects its employees, and demonstrates compliance in auditing, bidding, or ISO certification processes.
PIE in Critical Environments (Substations, Data Centers, and Industries)
The electrical installations record book is especially relevant in critical environments, where any electrical failure can generate risks to life, operational losses, and interruption of strategic services.
- Power Substations
In distribution substations, the PIE ensures that all safety conditions are documented: diagrams, grounding systems, LPS reports, and operating procedures. In addition, it integrates with tele-assistance and sectionalizing switch monitoring solutions required by Aneel for remote line operation.
📌 Here A3A stands out with projects in Londrina, Umuarama, and Guaíra (PR), where fiber optic networks, perimeter protection systems, and operational monitoring were implemented. - Data Centers and Mission-Critical Environments
In data centers, the PIE is essential to ensure electrical continuity and the proper functioning of HVAC systems, UPS systems, and structured cabling. The documentation ensures that each circuit is identified, allowing safe maintenance without the risk of downtime. - Industries and Manufacturing Plants
In industrial environments, where high loads and automated processes coexist, the PIE contributes to risk control, reduces equipment failures, and serves as a reference for regulatory inspections and insurance audits.
Keeping the electrical installations record book up to date in critical environments is not just an NR 10 requirement, but a strategy for operational continuity, asset security, and protection of human life.
Benefits of Keeping the PIE Updated
Maintaining the electrical installations record book continuously brings benefits that go far beyond simple compliance with NR 10. It becomes a strategic instrument of safety, efficiency, and governance for the company.
Main benefits:
- Worker safety
Documenting de-energization, lockout, and tagout (LOTO) procedures drastically reduces the risk of accidents, electrical shocks, and fires. - Legal compliance
The updated PIE demonstrates that the company fully complies with NR 10 obligations, avoiding fines, penalties, and shutdowns during Ministry of Labor inspections. - Support for audits and certifications
The existence of technical records, reports, and ARTs strengthens internal and external audits, and is also a requirement in ISO certification processes and contracts with major clients. - Easier insurance inspections
Many insurers require grounding reports, LPS reports, and PIE technical records as a condition for loss coverage. The PIE provides this technical backing. - Operational continuity
In critical environments such as industries, hospitals, and substations, the PIE reduces unplanned outages, contributes to system reliability, and ensures the traceability of maintenance actions. - Strategic value for management
In addition to complying with legislation, the record book serves as a planning basis for expansions, modernizations, and retrofits, optimizing investments in electrical infrastructure.
Consequences of the Absence of a PIE
Failing to keep the electrical installations record book up to date exposes the company to a series of technical, legal, and financial risks. As a document required by NR 10, the absence or irregularity of the PIE can compromise both people’s safety and business continuity.
Main consequences:
- Fines and shutdowns
The Ministry of Labor may penalize the company and, in more serious cases, shut down sectors or even suspend activities until the documentation is regularized. - Civil and criminal liability
In the event of an electrical accident, the lack of the PIE and the corresponding ART may lead managers and technical persons in charge to answer in court for negligence. - Labor lawsuits and increased liabilities
Employees exposed to risks without proper documentation may take action in Labor Court, generating compensation and additional charges. - Loss of insurance coverage
Many insurers require grounding reports, LPS reports, and PIE technical records to validate coverage. The absence of documentation may result in denial of indemnification. - Interruption of contracts and barriers in bids
Companies that do not have an electrical installations record book in compliance may lose competitiveness in bidding processes or contracts with major clients that require regulatory compliance.
In summary, the absence of the PIE is not just an administrative irregularity: it is a strategic risk that can compromise the company’s image, generate financial losses, and expose workers to dangerous situations.
Conclusion
The electrical installations record book, provided for in NR 10, is much more than a set of documents: it is an electrical safety management instrument that guarantees traceability, legal compliance, and technical support for operations in critical environments. By bringing together diagrams, memorials, procedures, reports, and ARTs, the PIE proves that the company adopts safe practices and complies with current standards, including NBR 5410 and NBR 5419.
Keeping the electrical installations record book updated protects employees, reduces accident risks, strengthens audits, enables certifications, and ensures insurance coverage. More than a regulatory requirement, it has become a strategic differentiator for organizations operating in sensitive sectors such as power substations, data centers, hospitals, and industries.
With extensive experience in electrical engineering, telecommunications, structured cabling, optical networks, and asset and operational monitoring systems, A3A Engenharia is a reference in preparing and updating PIEs, combining technical rigor, regulatory compliance, and an integrated vision of critical infrastructure.
👉 Contact our engineers and learn how to adapt your company to NR 10, ensuring safety, operational continuity, and legal compliance.
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Frequently Asked Questions
What should the Electrical Installations Record Book look like?
The PIE must be an organized, updated, and accessible document containing diagrams, memorials, safety procedures, inspection records, and technical reports. It must be signed by a qualified electrical engineer and linked to the ART, as required by NR 10.
What is part of the Electrical Installations Record Book?
The record book must include: updated single-line diagrams, technical specifications, inspection and measurement reports, LPS and grounding reports, operating procedures, training records, and ARTs issued by the technical person in charge.
What is the NR 10 Electrical Record Book?
It is the document that centralizes all the technical information of an electrical installation, as provided for by NR 10. Its purpose is to prove that the company adopts safety measures and maintains compliance with standards, reducing accident risks and meeting legal requirements.
Who should maintain the Electrical Installations Record Book?
The responsibility for preparing and keeping the PIE updated lies with the employer, who must appoint a qualified electrical engineer to sign the documentation. The technical person in charge guarantees the legal validity of the document and is accountable for the compliance of the information.
