Technical Name: NR 33 TRAINING COURSE – OCCUPATIONAL SAFETY AND HEALTH IN CONFINED SPACES – AUTHORIZED WORKER AND WATCHMAN LEVEL – TAUGHT IN ENGLISH
Reference: 10755
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NR33 Authorized Attendant Course
The NR33 Authorized Attendant Course aims to develop the participant’s ability to recognize, assess and control risks present in confined spaces. Based on the guidelines of NR 33, the student begins to understand how the atmosphere, equipment, procedures and communication influence operational safety. Thus, the content enables each professional to act with decisiveness, technical clarity and mastery of the preventive practices required by legislation.
In addition, the course seeks to strengthen the performance of the authorized worker and the watchman through risk analysis techniques, interpretation of the Entry and Work Permit and management of environmental conditions. By directly applying the requirements of NR 33, the training ensures that the participant responds quickly to critical situations, maintains team integrity and preserves regulatory compliance throughout all phases of the operation.
Who is responsible for authorizing entry into a confined space according to NR 33?
Understanding who authorizes entry is essential because NR 33 assigns precise responsibilities that guarantee safe decision-making. The authorization process requires verification of environmental conditions, procedural controls and the accuracy of the Entry and Work Permit. This alignment avoids ambiguity and reinforces operational reliability.
Additionally, the supervisor validates the permit, the authorized worker confirms readiness and the watchman maintains continuous external monitoring. Because each role supports the others, entry is authorized only when all professionals confirm full compliance. This shared responsibility strengthens safety throughout the entire operation.
When should atmospheric monitoring be performed during confined space operations?
Atmospheric monitoring must follow strict timing requirements because conditions inside a confined space can shift rapidly. NR 33 emphasizes that monitoring must occur at key moments to detect instability, protect the team and maintain full control of the environment. By understanding these moments, workers respond proactively and avoid exposure to hazardous atmospheres.
Atmospheric Monitoring Schedule
| Moment of Monitoring | Purpose |
|---|---|
| Before entry | Verify oxygen levels and confirm absence of toxic gases |
| During all operational activities | Identify atmospheric variations caused by tools or tasks |
| After any interruption | Reassess stability before re-entry |
| Before closing the activity | Ensure the environment has returned to safe parameters |
NR33 Authorized Attendant Course: Entry Permit must always reflect real conditions
To understand this statement, it is necessary to recognize that the Entry and Work Permit is only valid when it describes the real risks, controls and environmental conditions. NR 33 demands accuracy because any mismatch can compromise safety.
Real conditions documented
Updated information maintained
Environmental changes recorded
Risk controls validated
Why does NR 33 require continuous communication between the authorized worker, watchman and rescue team?
Continuous communication is vital because confined spaces present dynamic risks that can escalate quickly. The watchman provides real-time updates, identifies early warning signs and alerts the authorized worker immediately. This constant information flow reduces reaction time and supports preventive decision-making.
In addition, the rescue team depends on timely communication to prepare equipment, define routes and intervene precisely when necessary. NR 33 treats communication as a life-support element rather than a mere operational detail. When the flow remains uninterrupted, the entire system operates with higher stability and control.
Where should safety equipment inspection records be maintained according to NR 33?
Inspection records must remain accessible because they demonstrate traceability, compliance and equipment reliability. NR 33 requires that documents be stored in locations where supervisors, auditors and workers can easily verify equipment conditions before operations begin. Proper organization also supports legal defense and consistent operational standards.
Inspection Record Locations
| Record Location | Purpose |
|---|---|
| Centralized safety documentation | Ensures organized retrieval and full traceability |
| On-site operational files | Provides quick consultation during field activities |
| Digital backup repository | Prevents data loss and guarantees long-term storage |
| Supervisor’s controlled documentation | Confirms oversight and procedural validation |
NR33 Authorized Attendant Course: Rescue plan must be defined before any entry
To clarify this statement, we must consider that no worker may enter a confined space without a structured and validated rescue plan. NR 33 requires full preparation because inadequate rescue procedures are the leading cause of fatal incidents.
Rescue routes defined
Roles assigned
Equipment inspected
Communication procedures established
What qualifies a worker to act as a watchman during confined space operations?
A worker qualifies as a watchman when they can monitor the confined space continuously and apply NR 33 procedures with precision. Training, situational awareness and strong communication skills are essential. The watchman interprets environmental signals, observes worker behavior and reacts instantly to any irregularity.
Moreover, the watchman must understand the Entry and Work Permit, identify early hazard development and initiate emergency protocols without hesitation. The watchman does not assist internal tasks; instead, they protect the entire operation. Therefore, qualification requires both technical competence and disciplined focus.
What is the importance of the NR33 Authorized Attendant Course?
The NR33 Authorized Attendant Course is important because it prepares workers to recognize, evaluate and control the complex risks that exist in confined spaces. By applying the requirements of NR 33, the participant learns how atmospheric conditions, equipment limitations and procedural decisions directly influence safety. This knowledge transforms the worker’s ability to anticipate hazards and respond with precision, reducing the likelihood of critical incidents.
Furthermore, the course strengthens operational discipline by guiding workers, supervisors and watchmen through the correct use of the Entry and Work Permit, continuous communication and emergency planning. Because NR 33 defines strict responsibilities and performance criteria, the training ensures that each professional understands their role within the safety structure. As a result, the course not only elevates technical competence but also protects life and maintains full regulatory compliance.
Click the Link: Criteria for Issuing Certificates according to the Standards
Certificate of completion
Course NR 33 Authorized and Watchman in English
NR 33 TRAINING COURSE – OCCUPATIONAL SAFETY AND HEALTH IN CONFINED SPACES – AUTHORIZED WORKER AND WATCHMAN LEVEL – TAUGHT IN ENGLISH
Total Duration: 16 Hours
Module 1 – Definitions and Regulatory Framework (1 Hour)
Concepts and terminology established by NR 33
Legal responsibilities of employers, authorized workers and watchmen
Interaction with NR 01, NR 07, NR 09 and NR 35
Regulatory basis for safe confined space operations
Module 2 – Recognition, Evaluation and Control of Risks (1 Hour)
Principles of hazard identification
Criteria for evaluating existing and potential risks
Risk hierarchy and control measures
Preventive strategies for safe operations
Module 3 – Physical Risks in Confined Spaces (1 Hour)
Types and characteristics of physical agents
Physiological effects of heat, noise, vibrations and radiation
Monitoring methods and interpretation of results
Preventive measures and exposure minimization
Module 4 – Chemical Risks (1 Hour)
Toxic, flammable and explosive atmospheres
Oxygen displacement and atmospheric variation
Contamination mechanisms and exposure levels
Control strategies to maintain safe conditions
Module 5 – Biological Risks (1 Hour)
Biological agents and contamination pathways
Health effects related to microbiological exposure
Assessment of biological conditions inside confined spaces
Preventive and protective measures
Module 6 – Ergonomic Risks (1 Hour)
Postural limitations and restricted mobility
Cognitive load and decision-making under pressure
Human factors and operational perception
Ergonomic criteria for safe work performance
Module 7 – Accident Risks (1 Hour)
Dynamics of accidents in confined spaces
Identification of unsafe conditions and hazardous energy
Mechanisms of entrapment, engulfment and instability
Preventive actions to avoid occupational incidents
Module 8 – Identification of Confined Spaces (1 Hour)
Criteria to classify a confined space
Environmental, structural and process-related characteristics
Documentation and mapping procedures
Requirements for access authorization
Module 9 – Operation of Equipment Used in Confined Spaces (1 Hour)
Types of operational equipment and their functions
Selection criteria according to NR 33 requirements
Safety parameters for use in hazardous atmospheres
Limitations and operational considerations
Module 10 – Breath Protection (1 Hour)
Principles of respiratory protection
Types of respirators suitable for confined spaces
Criteria for indication, selection and correct usage
Inspection, cleaning and storage requirements
Module 11 – Entry and Work Permit Procedures (1 Hour)
Purpose and mandatory information of the permit
Authorization flow and validation criteria
Responsibilities of each professional involved
Documentation and revision procedures
Module 12 – Communication Between Team, Watchman and Rescue Group (1 Hour)
Operational communication methods
Roles and integration of team members
Information flow under normal and critical conditions
Prevention of communication failures
Module 13 – Safety Equipment Concepts and Practices (1 Hour)
PPE and EPC categories applicable to confined spaces
Selection and indication criteria
Inspection and pre-use verification
Limitations and best operational practices
Module 14 – Equipment Inspection and Safety Criteria (1 Hour)
Inspection routines and acceptance parameters
Identification of unsafe or deteriorated components
Documentation of inspection activities
Criteria for equipment replacement and risk control
Module 15 – Confined Space Safety Measures and Preventive Actions (1 Hour)
Atmospheric monitoring concepts
Isolation, ventilation and hazardous energy control
Administrative, technical and procedural protections
Integration with occupational risk management
Module 16 – Accident Prevention, First Aid Principles and AED Notions (1 Hour)
Identification of emergency conditions
Basic theoretical first-aid concepts
Theoretical understanding of AED
Preventive strategies to reduce event severity
Completion and Certification:
Practical Exercises (when contracted);
Evidence Recording;
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 changed, updated, with items added or removed as necessary by our Multidisciplinary Team. Our Multidisciplinary Team is authorized to update, adjust, modify and/or remove items, as well as insert or remove Standards, Laws, Decrees or technical parameters they deem applicable, whether related or not, and the Contracting Party is responsible for complying with the requirements set forth in the relevant Legislation.
Course NR 33 Authorized and Watchman in English
Course NR 33 Authorized and Watchman in English
Participants without experience:
Minimum working load = 32 hours / class
Participants with experience (Authorized and Watcher Level):
Minimum working load = 16 hours / class
Update (Recycle – Authorized and Watcher Level):
Minimum working load = 08 hours / class
Update (Recycle): NR-33 Item 33.3.5.3: All authorized workers, Watchers and Entry Supervisors must receive periodic training every 12 months, with a minimum working load of 8 hours. (Amended by Ministerial Order No. 1,409, of August 29, 2012).
NR-33 Item 3.5.2: The employer shall develop and implement training programs whenever any of the following situations occur:
a) change in procedures, conditions or work operations;
b) some event that indicates the need for new training; and
(c) where there is a reason to believe that there are deviations in use or entry procedures in confined spaces or that knowledge is inadequate.
Course NR 33 Authorized and Watchman in English
Course NR 33 Authorized and Watchman in English
Regulatory References to Applicable Provisions and Their Updates:
NR 01 – Disposições Gerais e Gerenciamento de Riscos Ocupacionais (General Provisions and Occupational Risk Management)
NR 33 – Segurança e Saúde nos Trabalhos em Espaços Confinados (Safety and Health in Work in Confined Spaces)
ABNT NBR 16577 – Espaço confinado – Prevenção de acidentes, procedimentos e medidas de proteção (Confined Space – Accident Prevention, Procedures and Protective Measures)
Protocolo – Guidelines American Heart Association (American Heart Association Guidelines Protocol)
ISO 10015 – Gestão da qualidade – Diretrizes para treinamento (Quality Management – Training 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)
Note: This service exclusively meets the requirements of the Special Secretariat for Social Security and Labor (SEPRT); if the service is intended to comply with other agencies, please inform us at the time of the request.
Course NR 33 Authorized and Watchman in English
Course NR 33 Authorized and Watchman in English
TECHNICAL CURIOSITIES – COURSE NR 33 AUTHORIZED AND WATCHMAN IN ENGLISH:
Atmospheres Can Change in Seconds
The atmosphere of a confined space can become lethal in less than three seconds due to sudden variations in oxygen, flammable vapors, or toxic gases. This rapid behavior occurs because the internal volume is small and does not allow adequate dispersion.
Noise Behaves Differently Underground
Sound in confined spaces multiplies and reverberates in an unusual way, making communication difficult. For this reason, NR 33 reinforces clear signaling protocols, avoiding noises that confuse the team and compromise decisions.
Gas Stratification is Invisible but Deadly
Some gases accumulate at the top and others at the bottom, creating invisible layers. A space may appear safe when measured only at chest height, while concentrating deadly toxins near the floor or ceiling.
Our pedagogical project follows the guidelines imposed by Regulatory Standard No. 1.
After payment confirmation, Purchase Order, Contract signed between the parties, or any other form of closing confirmation, the teaching material will be released within up to 72 business hours (up to 9 days), due to the adaptation of the program content and compliance with the Technical Standards applicable to the scenario expressed by the Contractor; as well as other adjustments to the teaching material carried out by our Multidisciplinary Team for technical language according to the student’s nationality and the specific Operational and Maintenance Technical Instruction Manuals related to the activities to be performed.
OTHER ELEMENTS WHEN APPLICABLE AND CONTRACTED:
Definitions;
Recognition, evaluation and control of risks;
Control measures;
Physical risks;
Chemical risks;
Biological risks;
Ergonomic risks;
Risks of accidents;
Identification of confined spaces;
Operation of equipment used in Confined Spaces;
Breath protection;
Procedures and use of the Entry and Work Permit;
The forms of communication between the team, lookouts and rescue group;
Concepts and practices on safety equipment;
Types of safety equipment (PPE and EPC);
Operation of safety equipment;
Inspection of equipment and safety items;
Criteria for indicating and using equipment for risk control;
Operation of equipment used in Confined Spaces;
Procedures and use of Entry and Work Permit in confined spaces;
Accident Prevention, Notions of First Aid + DEA;
Complements of the Activity:
Importance Awareness:
APR (Preliminary Risk Analysis);
PAE (Emergency Action Plan;
PGR (Risk Management Plan);
Understanding the Need for the Rescue Team;
The Importance of task knowledge;
Accident prevention and first aid notions;
Protection against fires;
Risk perception and factors affecting people’s perceptions;
Impact and behavioral factors in safety;
Fear factor;
How to discover the fastest and easiest way to develop skills;
How to control your mind while working
How to administer and manage work time;
Why balance energy during activity for productivity
Consequences of Risk Habituation;
Causes of accidents at work;
Notions on the Tree of Causes;
Notions on Fault Tree;
Understanding Ergonomics;
Analysis of Workplace;
Ergonomic Risks;
Hazard Communication Standard (HCS) – OSHA;
Practical Exercises:
Evidence Recording;
Theoretical and Practical Evaluation;
Certificate of Participation.
Course NR 33 Authorized and Watchman in English
Know More: Course NR 33 Authorized and Watchman in English
33.3.5.3 All authorized workers, Watchers and Entry Supervisors must receive periodic training every 12 months, with a minimum working load of 8 hours. (Amended by Ministerial Order No. 1,409, of August 29, 2012).
33.3.5.2 The employer shall develop and implement training programs whenever any of the following situations occur:
A) change in procedures, conditions or work operations;
B) some event that indicates the need for new training; And
C) where there is a reason to believe that there are deviations in use or entry procedures in confined spaces or that knowledge is not adequate.
33.3.5.4 The initial training of authorized workers and Watchers must have a minimum workload of sixteen hours, be carried out within working hours, with programmatic content of: (Amended by Administrative Rule MOP no. 1,409, of August 29, 2012) .
A) definitions;
B) recognition, evaluation and control of risks;
C) operation of equipment used;
D) procedures and use of the Entry and Work Permit; And
E) notions of rescue and first aid.
33.3.5.1 The designation for work in confined spaces is prohibited without the prior qualification of the worker.
33.4.2 Personnel responsible for the execution of rescue measures shall be physically and mentally compatible with the activity to be performed.
33.4.3 The training of the rescue team shall include all possible accident scenarios identified in the risk analysis.
33.5 General Provisions
33.5.1 The employer shall ensure that workers are able to interrupt their activities and leave the workplace whenever they suspect that there is a serious and imminent risk to their safety and health or to a third party worker.
33.5.2 The contracting company and the contractor company shall be jointly and severally liable for compliance of this NR.
33.5.3 It is forbidden to enter and perform any work in confined spaces without the issue of the Entry and Work Permit.
F: NR 33
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