Technical Name: SAFETY TRAINING FOR WORKERS WHO INTERVENE IN ENERGIZED HIGH-VOLTAGE ELECTRICAL INSTALLATIONS IN THE ELECTRIC POWER SYSTEM IN ENGLISH
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NR10 SEP Training English
The objective of this course is to develop solid technical awareness for professionals who intervene in energized high-voltage electrical installations within the Electric Power System. Therefore, the training focuses on understanding risks, recognizing limiting conditions, and applying structured methods for planning, communication, and decision-making. By doing so, participants strengthen their ability to interpret operational scenarios, anticipate hazards, and act with technical consistency in complex and high-risk environments.
Furthermore, the course aims to align professional conduct with the principles, requirements, and safety logic established by NR 10, which serves as the main regulatory reference. As a result, workers consolidate theoretical competence to operate responsibly, reduce exposure to critical risks, and support safe, organized, and traceable electrical activities, even under demanding operational conditions involving energized high-voltage systems.
Who is qualified to intervene in energized high-voltage electrical installations?
Professionals who intervene in energized high-voltage installations must demonstrate technical competence, situational awareness, and the ability to understand complex electrical environments. Therefore, qualification goes beyond formal training and depends on the capacity to interpret risks, follow structured procedures, and act responsibly under critical conditions.
Moreover, these workers must understand the Electric Power System as an integrated structure. As a result, they can anticipate hazards, respect operational limits, and contribute to collective safety, even when performing tasks in high-risk and time-sensitive scenarios.
When should energized work be planned and authorized?
Before any intervention, planning becomes the decisive factor for safety. Consequently, energized work must only occur after careful evaluation of conditions, risks, and operational feasibility.
The table below summarizes the key moments that require planning and authorization.
| Planning Stage | Purpose | Safety Impact |
|---|---|---|
| Service scheduling | Define timing and sequence | Prevents rushed decisions |
| Risk evaluation | Identify hazards | Reduces unexpected exposure |
| Authorization review | Confirm readiness | Ensures controlled execution |
| Final verification | Validate conditions | Prevents unsafe start |
NR10 SEP Training English: Technical competence defines safe intervention
This statement reinforces that safety in energized high-voltage systems depends directly on knowledge, discipline, and technical judgment. Without these elements, even well-designed systems become vulnerable.
Key aspects involved
Understanding system behavior
Recognizing limiting conditions
Applying standardized methods
Maintaining operational discipline
Why is communication critical in high-voltage energized operations?
Because energized environments allow little margin for error, communication becomes a primary safety barrier. Therefore, clear, direct, and standardized communication prevents misunderstandings that could escalate into severe incidents.
In addition, effective communication aligns teams, synchronizes actions, and reinforces situational awareness. As a consequence, it supports coordinated decision-making and reduces the likelihood of unsafe assumptions during complex operations.
Where do the most critical risks occur within the Electric Power System?
Critical risks concentrate in areas where energy remains present, even when systems appear controlled. Thus, recognizing these zones is essential for safe intervention.
The table below highlights typical high-risk locations.
| Location | Main Risk | Reason |
|---|---|---|
| Near energized conductors | Electrical arc | Reduced air insulation |
| Grounding areas | Step and touch voltage | Potential differences |
| Adjacent live lines | Induction | Unintended energization |
| Substations | Combined hazards | High energy density |
NR10 SEP Training English: Proximity control prevents most serious accidents
This affirmation emphasizes that controlling distance from energized parts is one of the most effective safety measures. When professionals respect approach limits, they significantly reduce the likelihood of arcs and unintended contact.
Key elements of proximity control
Defined safe distances
Visual identification of energized zones
Continuous situational awareness
Strict adherence to operational limits
How does risk analysis support decision-making in energized work?
Risk analysis transforms uncertainty into structured understanding. Therefore, it allows professionals to identify hazards, evaluate exposure, and define control measures before execution.
Furthermore, when applied consistently, risk analysis supports informed decisions, strengthens operational discipline, and reinforces a safety-focused mindset. As a result, it becomes a decisive tool for reducing incidents in energized high-voltage environments.
What is the important of the NR10 SEP Training English?
The importance of this course lies in preparing professionals to understand and manage the complex risks involved in interventions on energized high-voltage electrical installations within the Electric Power System. Therefore, the training strengthens technical awareness, improves risk perception, and promotes disciplined decision-making. By mastering these elements, workers reduce exposure to critical hazards, avoid unsafe assumptions, and contribute to safer and more reliable electrical operations.
Furthermore, this course aligns professional conduct with the principles and requirements established by NR 10, which is the main regulatory reference for electrical safety. As a result, participants consolidate theoretical competence, reinforce responsibility, and support compliance, operational continuity, and accident prevention in environments where errors have severe and often irreversible consequences.
Click the Link: Criteria for Issuing Certificates in accordance with the Standards
Certificate of Completion
NR10 SEP Training English
SAFETY TRAINING FOR WORKERS WHO INTERVENE IN ENERGIZED HIGH-VOLTAGE ELECTRICAL INSTALLATIONS IN THE ELECTRIC POWER SYSTEM IN ENGLISH
Workload: 40 Hours
MODULE 1 – Fundamentals of the Electric Power System and High-Voltage Context (5 Hours)
Concepts and structure of the Electric Power System
Characteristics of energized high-voltage installations
Operational logic of generation, transmission and distribution
Roles and responsibilities of workers involved in energized systems
General principles of electrical safety in high-voltage environments
MODULE 2 – Organization, Planning and Service Programming (5 Hours)
Organization of electrical installations
Service programming and activity sequencing
Technical and operational planning
Documentation management and technical records
Installation registry and information traceability
Importance of accurate and updated technical data
MODULE 3 – Work Methods, Communication and Behavioral Influence (5 Hours)
Work methods applied to energized electrical systems
Operational communication processes
Identification and standardization of information
Influence of human behavior on safety performance
Risk perception and decision-making
Conditions that prevent or interrupt services
MODULE 4 – Typical Risks in the Electric Power System (5 Hours)
Risks associated with energized installations
Proximity risks and unsafe approach distances
Contact with energized parts
Electrical induction effects
Atmospheric discharge exposure
Static electricity phenomena
Electric and magnetic field exposure
MODULE 5 – Risk Prevention and Safety Methods in Operations (5 Hours)
Preventive measures for electrical risks
Safety methods in energized operations
Control of exposure and proximity
Management of additional and combined risks
Application of risk control strategies
Integration of preventive actions into daily operations
MODULE 6 – Risk Analysis and Occupational Procedures (5 Hours)
Principles of risk analysis
Hazard identification and risk evaluation
Development and application of occupational procedures
Critical review and discussion of procedures
Decision criteria for safe work execution
Documentation of risk management actions
MODULE 7 – Equipment, Tools and Protection Systems (5 Hours)
Work equipment and operational tools
Criteria for selecting appropriate equipment
Correct use of tools and instruments
Conservation and functional verification
Collective protection systems
Personal protection equipment
Work postures, clothing and operational discipline
MODULE 8 – Operational Safety, Accidents and Responsibilities (5 Hours)
Safety in vehicle use and transportation of people, materials and equipment
Signaling and isolation of work areas
Release of installations for service, operation and use
Typical accidents in high-voltage environments
Accident analysis and critical discussion
Preventive measures against accidents
Emergency response concepts and victim handling fundamentals
Individual and organizational responsibilities
Completion and Certification:
Practical Exercises (when contracted);
Evidence Records;
Theoretical Evaluation;
Practical Evaluation (when contracted);
Certificate of Participation.
NOTE:
We emphasize that the General Normative Program Content of the Course or Training may be modified, updated, supplemented, or have items excluded as deemed necessary by our Multidisciplinary Team. Our Multidisciplinary Team is authorized to update, adapt, modify, and/or exclude items, as well as insert or remove Standards, Laws, Decrees, or technical parameters they consider applicable, whether related or not. The Contracting Party is responsible for ensuring compliance with the relevant legislation.
NR10 SEP Training English
NR10 SEP Training English
Inexperienced Participants:
Minimum credit hours = 80 hours/class
Experienced Participants:
Minimum credit hours = 40 hours/class
Update (Recycling):
Minimum credit hours = 20 hours/class
Updating (Recycling): The employer must carry out periodic Biennial training and whenever any of the following situations occur:
a) change in work procedures, conditions or operations;
b) event that indicates the need for new training;
c) return from work leave for a period exceeding ninety days;
d) change of company;
e) Exchange of machine or equipment.
NR10 SEP Training English
NR10 SEP Training English
Normative references when applicable to applicable devices and their updates:
NR 01 – Disposições Gerais e Gerenciamento de Riscos Ocupacionais (General Provisions and Occupational Risk Management)
NR 10 – Segurança em Instalações e Serviços em Eletricidade (Safety in Electrical Installations and Services)
ABNT NBR 14039 – Instalações elétricas de média tensão de 1,0 kV a 36,2 kV (Medium Voltage Electrical Installations from 1.0 kV to 36.2 kV)
ABNT NBR 5419 – Proteção de estruturas contra descargas atmosféricas (Protection of Structures Against Lightning)
ABNT NBR 15749 – Medição de resistência de aterramento e de potenciais na superfície do solo em sistemas de aterramento (Measurement of Grounding Resistance and Surface Potential in Grounding Systems)
ABNT NBR 16384 – Linhas elétricas aéreas – Requisitos de segurança para trabalhos com linhas energizadas (Overhead Power Lines – Safety Requirements for Work on Energized Lines)
ABNT NBR ISO 31000 – Gestão de riscos – Diretrizes (Risk Management – Guidelines)
ISO 45001 – Sistemas de gestão de saúde e segurança ocupacional – Requisitos com orientação para uso (Occupational Health and Safety Management Systems – Requirements with Guidance for Use)
Protocolo – Guidelines American Heart Association (American Heart Association Guidelines)
Note: This Service exclusively meets the requirements of the MTE (Ministry of Labor and Employment) when dealing with other bodies, inform in the act of request.
NR10 SEP Training English
NR10 SEP Training English
TECHNICAL CURIOSITIES – NR10 SEP TRAINING ENGLISH:
The Invisible Risk of Electric Fields
Even without direct contact, energized high-voltage installations generate electric fields capable of inducing currents in nearby conductive objects and even in the human body. This phenomenon explains why safe approach distances exist and why workers may experience unexpected sensations or equipment interference without touching live parts.
Atmospheric Conditions Change Electrical Behavior
Humidity, rain and pollution layers significantly alter the behavior of high-voltage systems. Moist air reduces insulation strength, increases leakage currents and raises the probability of flashover, which is why weather conditions are a critical factor in operational decision-making.
Proximity Is Often More Dangerous Than Contact
Many severe accidents occur without direct contact with energized parts. Electrical arcs can bridge air gaps when minimum approach distances are violated, especially under high humidity or contamination, making proximity control one of the most critical safety measures.
After payment is made, Purchase Order, Contract signed between the parties, or other form of closing confirmation, the teaching material will be released within 72 working hours (up to 9 days), due to the adaptation of the syllabus and compliance with the Standards Techniques applicable to the scenario expressed by the Contracting Party; as well as other adaptations to the teaching material, carried out by our Multidisciplinary Team for technical language according to the student’s nationality and Technical Operational and Maintenance Instruction Manuals specific to the activities that will be carried out.
OTHER ELEMENTS WHEN APPLICABLE AND CONTRACTED:
Parameters established by NR-10;
Organization of the Electric Power System;
Service scheduling;
Service planning;
Installation records;
Installation registry;
Work methods and communication;
Influence of behavioral aspects;
Restrictive conditions for services;
Typical risks of the Electric Power System;
Preventive risk measures;
Proximity;
Safety methods in SEP operations;
Contact with energized parts;
Induction;
Atmospheric discharges;
Static electricity;
Electric and magnetic fields;
Communication and identification;
Additional risks;
Work at height;
Special machinery and equipment;
Risk analysis techniques;
Occupational procedures;
Analysis and discussion of procedures;
Live-line work:
Live-line;
Work at potential and work in indoor areas;
Remote work and night work;
Underground environments;
Work equipment and tools;
Selection of appropriate equipment;
Proper use of equipment and tools;
Maintenance of instruments;
Verification and testing;
Collective protection systems;
Personal protective equipment;
Work postures and clothing;
Safety with vehicles and transportation of people, materials, and equipment;
Signage and isolation of work areas;
Release of installations for service and for operation and use;
Rescue techniques, assistance, and transportation of injured persons;
Typical accidents;
Analysis and discussion of accidents;
Accident protection measures;
Responsibilities;
Activity Complements:
Awareness of Importance:
APR (Preliminary Risk Analysis);
PAE (Emergency Action Plan);
PGR (Risk Management Plan);
Understanding the need for the Rescue Team;
The importance of knowledge of the task;
Accident prevention and basic first aid notions;
Fire protection;
Risk perception and factors that affect people’s perceptions;
Impact and behavioral factors on safety;
Fear factor;
How to discover the fastest and easiest way to develop skills;
How to control the mind while working;
How to manage and organize work time;
Why balancing energy during the activity is essential to achieve productivity;
Consequences of Risk Habituation;
Causes of occupational accidents;
Basic notions of Cause Tree;
Basic notions of Fault Tree;
Understanding of Ergonomics;
Workstation Analysis;
Ergonomic Risks;
Communication and Hazard Standard (HCS (Hazard Communication Standard) – OSHA);
Practical Exercises:
Evidence Recording;
Theoretical and Practical Evaluation;
Certificate of Participation.
NR10 SEP Training English
Learn More: NR10 SEP Training English
Item 10.7 – WORK INVOLVING HIGH VOLTAGE (HV)
10.7.1 Workers who intervene in energized high-voltage electrical installations, performing their activities within the limits established as controlled and risk zones, as defined in Annex II, must comply with the provisions of item 10.8 of this NR.
10.7.2 The workers referred to in item 10.7.1 must receive safety training specific to safety in the Electric Power System (SEP) and in its vicinity, with minimum curriculum, workload, and other requirements established in Annex III of this NR.
10.7.3 Services on energized high-voltage electrical installations, as well as those carried out in the Electric Power System – SEP, may not be performed individually.
10.7.4 All work on energized high-voltage electrical installations, as well as those that interact with the SEP, may only be carried out upon a specific work order for the date and location, signed by the supervisor responsible for the area.
10.7.5 Before starting work on energized high-voltage circuits, the immediate supervisor and the team responsible for executing the service must conduct a prior assessment, study, and plan the activities and actions to be carried out in order to comply with basic technical principles and the best electrical safety techniques applicable to the service.
10.7.6 Services on energized high-voltage electrical installations may only be carried out when there are specific, detailed procedures signed by an authorized professional.
10.7.7 Intervention in energized high-voltage electrical installations within the limits established as a risk zone, as defined in Annex II of this NR, may only be carried out through deactivation, also known as lockout, of the assemblies and automatic reclosing devices of the circuit, system, or equipment.
10.7.7.1 Deactivated equipment and devices must be signposted with identification of the deactivation condition, in accordance with a specific standardized work procedure.
10.7.8 Equipment, tools, and insulating devices or those equipped with insulating materials intended for high-voltage work must be subjected to periodic electrical tests or laboratory testing, in accordance with the manufacturer’s specifications, company procedures, and, in their absence, annually.
10.7.9 Every worker in energized high-voltage electrical installations, as well as those involved in activities in the SEP, must have equipment that allows permanent communication with other team members or with the operations center during the execution of the service.
S: NR 10
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