NR-34 – Work Conditions and Environment in Shipbuilding and Ship Repair Industry

(MTP Ordinance No. 4219, of December 20, 2022)


34.1 Objective and Scope of Application
34.2 Responsibilities
34.3 Training and Education
34.4 Documentation
34.5 Hot Work
34.6 Work at Height
34.7 Exposure to Ionizing Radiation
34.8 Blasting and Hydroblasting Activities
34.9 Painting Activities
34.10 Load Handling
34.11 Scaffold Assembly and Disassembly
34.12 Portable Equipment
34.13 Temporary Electrical Installations
34.14 Leak Tests
34.15 Temporary Fixation and Stabilization of Structural Elements
34.16 Floating Structures
34.17 Emergency Response Plan
34.18 Final Provisions
34.19 Glossary
Annex I Program Content and Minimum Course Load for Training Program
Annex II Tables

34.1 Objective and Scope

34.1.1 This Regulatory Standard (NR) establishes the minimum requirements and protective measures for safety, health, and environment in the activities of the construction, repair, and dismantling of naval vessels.

34.1.2 Activities in the naval construction and repair industry are considered to be all those developed within the facilities employed for this purpose or on the vessels and structures themselves, such as ships, boats, motorboats, fixed or floating platforms, among others.

34.1.3 (Revoked by Ordinance SEPRT No. 915, July 30, 2019)

34.2 Responsibilities

34.2.1 It is the employer’s responsibility to ensure the effective implementation of the protective measures established in this NR, and must:

a) formally designate a person responsible for implementing this NR;

b) ensure the adoption of the protective measures defined in this NR before starting any work;

c) ensure that work is immediately stopped when environmental conditions change to become potentially dangerous to the physical and mental integrity of workers;

d) provide for the Preliminary Risk Analysis (PRA) and, when applicable, the issuance of the Permit To Work (PTW);

e) conduct, before the start of operational activities, a Daily Safety Talk, covering the activities to be developed, the work process, the risks and protective measures, recording the topic discussed in a document, signed by the participants and archived, along with the attendance list;

f) ensure that workers have up-to-date information about the risks of the activity and the control measures that are and should be adopted;

g) take the necessary steps to monitor the compliance of the protective measures established in this NR by the contracted companies.

34.2.2 The employer must provide conditions for workers to collaborate with the implementation of the measures provided in this NR, as well as immediately stop the work, informing their superior, as provided in item 34.2.1(c).

34.3 Training and Education

34.3.1 A worker is considered qualified if they can prove completion of a specific course for their activity in an institution recognized by the official education system.

34.3.2 A legally qualified professional is a worker who is previously qualified and registered with the competent professional council.

34.3.3 A worker is considered trained if they receive training under the guidance and responsibility of a legally qualified professional.

34.3.4 (Revoked by Ordinance SEPRT No. 915, July 30, 2019) Induction training must have a minimum duration of six hours and include information on:

a) the inherent risks of the activity;

b) the work conditions and environment;

c) the existing Collective Protective Equipment (CPE) in the establishment;

d) the proper use of Personal Protective Equipment (PPE). Refresher training must have a minimum duration of four hours and be conducted annually or upon returning to work after an absence exceeding ninety days.

34.3.5 Training must be conducted during normal working hours. (Revoked by Ordinance SEPRT No. 915, July 30, 2019) (Revoked by Ordinance SEPRT No. 915, July 30, 2019) (Revoked by Ordinance SEPRT No. 915, July 30, 2019)

34.3.6 The worker must receive the educational material used in the training.

34.4 Documentation

34.4.1 All documentation provided in this NR must be kept at the establishment available to the Labor Inspection, representatives of the Internal Committee for Prevention of Accidents and Harassment (CIPA), and representatives of the trade unions representing the category, being archived for a minimum period of five years.

34.4.2 The permit to work (PTW) consists of a written document containing the set of control measures necessary for the work to be performed safely, in addition to emergency and rescue measures, and must:

a) be issued in three copies, to be displayed in the workplace, given to the immediate supervisor of the workers who will perform the work, and filed so it can be easily accessible;

b) contain the minimum requirements to be met for the execution of the work and, when applicable, the provisions established in the PRA;

c) be signed by the members of the work team, the immediate supervisor, and the occupational health and safety professional or, in the absence of this, the person responsible for compliance with this NR;

d) have validity limited to the duration of the activity, restricted to the work shift, and may be revalidated by the responsible person in situations where there are no changes in the established conditions or the work team.

34.4.3 The Preliminary Risk Analysis (PRA) consists of the initial assessment of potential risks, their causes, consequences, and control measures, conducted by a multidisciplinary technical team and coordinated by an occupational health and safety professional or, in the absence of this, the person responsible for compliance with this NR, and must be signed by all participants.

34.5 Hot Work

34.5.1 For the purposes of this NR, hot work is defined as welding, gouging, grinding, cutting, or other activities that may generate ignition sources such as heating, sparks, or flames. Protective measures include general and specific measures, applicable to all activities inherent to hot work and to work in areas not previously designated for this purpose.

General Measures

34.5.2 Preliminary Inspection In places where hot work is carried out, a preliminary inspection must be conducted to ensure that:

a) the workplace and adjacent areas are clean, dry, and free from combustible, flammable, toxic, and contaminating agents;

b) the area is only released after verifying the absence of activities incompatible with hot work;

c) hot work is performed by trained workers, as specified in item 4 of Annex I.

34.5.3 Fire Protection Employers must take the following fire protection measures in places where hot work is carried out:

a) eliminate or control possible fire hazards;

b) install appropriate physical protection against fire, splashes, heat, sparks, or slag to prevent contact with combustible or flammable materials, as well as interfere with parallel activities or the movement of people;

c) keep a fire fighting system unobstructed and close to the work area, specified according to the type and quantity of flammable and/or combustible materials present;

d) inspect the area and adjacent areas at the end of the work to prevent fire outbreaks.

34.5.4 Fume and Contaminant Control To control fumes and contaminants from hot work, the following measures must be implemented:

a) adequately clean the surface and remove the cleaning products used before performing any operation;

b) provide air renewal to eliminate gases, vapors, and fumes used and/or generated during hot work. Whenever there is a change in the established environmental conditions, activities must be interrupted, the environmental conditions evaluated, and the necessary measures taken to adapt air renewal. When the composition of the coating or the gases released in the welding/heating process is unknown, self-contained respiratory protection equipment or compressed air line respiratory protection must be used, according to the Respiratory Protection Program (RPP).

34.5.5 Gas Use In hot work using gases, the following measures must be taken:

a) use only gases suitable for the application, according to the manufacturer’s information;

b) follow the determinations indicated in the Safety Data Sheet (SDS);

c) use calibrated pressure regulators in compliance with the gas used. The installation of adapters between the cylinder and the pressure regulator is prohibited. In the case of oxyacetylene equipment, a flame arrestor must be used in the hose and torch feed. Regarding the gas circuit, the following must be observed:

a) inspection before starting work to ensure no leaks and proper functioning;

b) maintenance with the periodicity established in the company’s procedure, according to the technical specifications of the manufacturer/supplier. Only connectors conforming to the supplier/manufacturer’s technical specifications are allowed for hose splicing. Gas cylinders must be:

a) kept in an upright position, secured and away from flames, spark sources, heat, or flammable products;

b) installed to avoid becoming part of an electrical circuit, even accidentally;

c) transported in an upright position, with a threaded cap, using appropriate equipment, properly secured, avoiding collisions;

d) when inoperative and/or empty, kept with valves closed and stored with the valve protector (threaded cap). The installation of gas cylinders in confined spaces is prohibited. Whenever the service is interrupted, cylinder, torch, and gas distributor valves must be closed. At the end of the service, the feed hoses must be disconnected. Inoperative equipment and gas hoses must be kept outside confined spaces.

34.5.6 Electrical Equipment Electrical equipment and accessories must be grounded to a safe grounding point and installed according to the manufacturer’s instructions. Electrical cables of appropriate gauge must be used for the intended applications, and with the insulation in perfect condition. Output terminals must be kept in good condition, without broken parts or cracked insulation, especially those connected to the piece to be welded. Electrical connections must be well adjusted, clean, and dry.

Specific Measures

34.5.7 PRA techniques must be employed to:

a) determine control measures;

b) define the coverage radius;

c) sign and isolate the area;

d) evaluate the need for special fire watch and alarm system;

e) take other necessary measures as needed.

34.5.8 Before starting hot work, the area must be inspected, and the inspection results recorded in the permit to work.

34.5.9 Openings and ducts must be closed or protected to prevent spark projection, combustion, or interference with other activities.

34.5.10 When specified in the PRA, the observer must remain in place, in permanent contact with the work fronts, until the task is completed. The fire watch must receive training provided by a trained worker in fire prevention and firefighting, with program content and minimum duration according to item 1 of Annex I of this NR.

34.6 Work at Height

34.6.1 The fall protection measures must comply with NR-35 and the provisions of this item.

34.6.2 Work Methodology When performing work at height, the following measures must be taken:

a) Isolation and signing of the entire area under the work before starting activities;

b) Adoption of measures to prevent the fall of tools and materials, including in case of work interruption;

c) De-energization, blocking, and labeling of all overhead electrical installations near the work;

d) Installation of protection or barriers to prevent accidental contact with overhead electrical installations, following the local utility’s procedure, when de-energization is not technically feasible;

e) Immediate interruption of work at height in case of insufficient lighting or adverse weather conditions, such as rain and winds exceeding forty kilometers per hour, among others. Work at height may be authorized under conditions with winds exceeding forty kilometers per hour and below fifty-five kilometers per hour, provided the following requirements are met:

a) Justification of the impossibility of postponing the work through a document attached to the PRA, signed by a safety professional and the person responsible for executing the services, detailing the applicable additional protective measures;

b) Performed under the supervision of a safety professional and the person responsible for the activities.

34.6.3 Stairs, Ramps, and Walkways Floors with a level difference greater than thirty centimeters must be crossed using stairs or ramps. Collective use stairs, ramps, and walkways for the circulation of people and materials must have solid construction, handrails, and toe boards. For the construction of stairs, ramps, and walkways, dry, good quality wood must be used that is free of knots and cracks that could compromise its strength, and the use of paint to cover imperfections is prohibited.

Stairs The use of wooden stairs is prohibited for hot work. Temporary collective use stairs must be sized according to the flow of workers, with a minimum width of eighty centimeters, and an intermediate landing at least every two meters and ninety centimeters of height, with the width and length at least equal to the width of the ladder. Ladders are restricted to temporary access and small-scale services, and must:

a) Be sized up to seven meters in length with uniform spacing between rungs, varying between twenty-five and thirty centimeters;

b) Extend one meter above the upper floor;

c) Be secured at both the top and bottom or have a device to prevent slipping;

d) Have non-slip rungs;

e) Be supported on a sturdy floor. The use of single-rail ladders and near unprotected electrical networks and equipment is prohibited. Ladders must not be placed near doors or circulation areas, openings, and gaps, and in places where there is a risk of falling objects or materials. Ladders must be rigid, stable, and have devices to keep them open at a constant width and a maximum length of six meters when closed. Extension ladders must have a travel limiter placed on the fourth rung from the ratchet or, if there is no limiter, must allow for an overlap of at least one meter when extended. Fixed ladders with six meters or more in height must have:

a) Protective cages starting two meters above the base up to one meter above the last working surface;

b) An intermediate resting platform, protected by guardrails and toe boards, for every nine meters of ascent.

Ramps and Walkways Temporary ramps and walkways must be constructed and maintained in perfect conditions of use and safety. Temporary ramps must be secured at both the lower and upper floors, not exceeding a thirty-degree inclination relative to the floor. Temporary ramps with an inclination greater than eighteen degrees must have crosspieces spaced a maximum of forty centimeters apart for foot support. There should be no protrusions between the walkway floor and the ground floor. The supports at the ends of walkways must be sized according to their total length and the loads they will bear.

34.6.4 Fixed Platforms Platforms must be designed, approved, installed, and maintained to support the maximum permissible loads. The platform design and its supporting and anchoring structure must be carried out by a legally qualified professional. The design calculation memory must be kept at the establishment. The use of any means to reach higher places on the platform working floor is prohibited. Platforms must have a visible and indelible sign indicating the maximum permissible load.

34.6.5 Elevating Work Platforms Work platforms with a vertical movement system using rack and pinion and hydraulic platforms must comply with the manufacturer’s technical specifications regarding assembly, operation, maintenance, disassembly, and periodic inspections, under the technical responsibility of a legally qualified professional. For imported equipment, the designs, technical specifications, and assembly, operation, maintenance, inspection, and disassembly manuals must be reviewed and endorsed by a legally qualified professional in the country, complying with the technical standards of the Brazilian Association of Technical Standards (ABNT) or international entities endorsed by it, or another entity accredited by the National Institute of Metrology, Standardization and Industrial Quality (INMETRO). The manufacturer’s manuals, in Portuguese, must be available at the establishment. The installation, maintenance, and periodic inspection of work platforms must be carried out by a trained worker, under the supervision and technical responsibility of a legally qualified professional. Elevating work platforms must only be operated by a trained worker. All platform users must be instructed on the correct loading and positioning of materials on the platform. The person responsible for the daily verification of the equipment’s condition must receive a procedure manual for daily verification routines. The minimum load capacity on the working floor must be one hundred and fifty kilograms-force per square meter. Telescopic extensions, when used, must offer the same resistance as the platform floor. Improvised assembly of cantilevered sections and the interconnection of platforms are prohibited. The manufacturer or lessor is responsible for indicating the forces on the structure and supports of the platforms, as well as the points that withstand these forces. The area under work platforms must be properly signaled and delimited, and the circulation of workers within that space is prohibited. Elevating work platforms must have:

a) An automatically activated audible signaling system during ascent and descent;

b) An emergency stop button on the control panel;

c) Safety devices to ensure perfect leveling at the work point, not exceeding the maximum inclination indicated by the manufacturer. The vertical path of the platforms must be free of obstructions that could impede their free movement. In case of electrical failure, the equipment must have mechanical emergency devices to keep the platform stationary, allowing the operator to manually relieve it for safe descent to its base. The topmost element of the tower must be solid, containing no rack gears, ensuring the rollers remain in contact with the guides. The fastening elements used in platform locking must be properly sized to support the forces indicated in the design. The spacing between anchorages or joints must comply with the manufacturer’s specifications and be indicated in the design. Tower anchoring is mandatory when its height exceeds nine meters. The use of elevating platforms without anchorage or joints must strictly follow the conditions of each model indicated by the manufacturer. When using elevating platforms with a mobile chassis, it must be properly leveled, stilted, and/or locked at the beginning of the vertical tower assembly, remaining so during its use and disassembly. Guardrails, including those on telescopic extensions, must comply with the provisions of item 34.11.16 and observe the manufacturer’s specifications, with the use of ropes, cables, chains, or any other flexible material being prohibited. When not in use, the equipment must be at the base level, turned off, and protected against unauthorized activation. The access to the work platforms must be equipped with electro-electronic devices that prevent movement when open. The use of elevating work platforms for the transportation of people and materials not related to the services being performed is prohibited.

34.6.6 Rope Access When performing activities with rope access, technical procedures for industrial climbing must be used, as established in national technical standards or, in their absence, international standards. The company responsible for the service and the work team must be certified in accordance with national technical standards or, in their absence, international standards. The work team must be trained for rescue at height and consist of at least three people, including a supervisor. Each work site must have a self-rescue and rescue plan. While performing activities, the worker must be connected to at least two anchorage points. Equipment and ropes that are certified in accordance with national standards or, in the absence of these, international standards must be used. Equipment used for rope access must be stored and maintained according to the manufacturer/supplier’s recommendations. The manufacturer/supplier information must be maintained to allow traceability. Rope access must be immediately interrupted in case of insufficient lighting and adverse weather conditions, such as rain and winds exceeding forty kilometers per hour, among others. Rope access in conditions with winds exceeding forty kilometers per hour and below forty-six kilometers per hour may be authorized, provided the following requirements are met:

a) Justification of the impossibility of postponing the tasks through a document attached to the PRA, signed by a health and safety professional and the person responsible for carrying out the tasks, detailing the applicable additional protective measures;

b) Performed under the supervision of a health and safety professional and the person responsible for the activities. The work team must carry a radio communicator or similar telephone equipment.

34.6.7 Platforms for Working at Heights Below 2.00m For work performed at heights below 2.00 (two meters), platforms can be used, which must:

a) Have an indelible indication of load capacity;

b) Have integrated means of access;

c) Have guardrails with a minimum height of 1.00m (one meter) with openings less than 50 cm;

d) Have a toe board with a height of 20 cm, for platforms with floors above 1.00m (one meter). The use of wooden structures is prohibited. In the case of platforms on casters, they must additionally:

a) Be equipped with locks;

b) Be supported only on flat, horizontal surfaces.

34.7 Exposure to Ionizing Radiation

34.7.1 Safety measures must be adopted when performing services involving ionizing radiation (radiography and gammagraphy) to protect workers and the environment from the harmful effects of radiation.

34.7.2 The executing company must designate a Radiation Protection Supervisor responsible for supervising work with exposure to ionizing radiation.

34.7.3 Services must be performed according to the instructions in the permit to work for activities involving exposure to ionizing radiation.

34.7.4 Work must be immediately interrupted if there is a change in environmental conditions that makes it potentially dangerous.

34.7.5 The following documents must be prepared and kept updated at the establishment:

a) Radiation Protection Plan, approved by the National Nuclear Energy Commission (CNEN);

b) Operation authorization issued by CNEN;

c) List of professionals registered by CNEN to perform the services;

d) Calibration certificates for radiation monitors, in accordance with CNEN regulations;

e) Certificates of radioactive sources and their respective decay tables.

34.7.6 In the case of services performed by contracted companies, copies of the documents listed in item 34.7.5 must be kept by the contracting company.

34.7.7 The Radiation Protection Plan must be integrated with the company’s other programs, especially the Occupational Risk Management Program (PGR) and the Occupational Health Medical Control Program (PCMSO).

34.7.8 Before starting services involving ionizing radiation, a specific radioprotection plan must be prepared, containing:

a) Characteristics of the radioactive source;

b) Characteristics of the equipment (type of focus, maximum power, etc.);

c) Calculation memory;

d) Method of storing the radioactive source;

e) Movement of the radioactive source;

f) List of accessories and instruments to be used in emergency situations;

g) List of involved workers;

h) Emergency action plan. The contracted company must present a specific radioprotection plan to the contracting company.

34.7.9 The contractor must keep records of the dose for each Occupationally Exposed Individual (IOE). If there are IOE workers from the contracting company, the dose records for these workers must be kept by the contracting company. The records must be preserved until the IOEs reach the age of seventy-five and for at least thirty years after the end of their occupation, even if they have already died

34.7.10 Preventive safety measures must be applied in services involving ionizing radiation. Before exposing the radiation source, the following actions must be taken:

a) Provide adequate access and conditions at the location where radiography and/or gammagraphy of the object will be performed;

b) Isolate the controlled area, signaling it with warning signs containing the international symbol for ionizing radiation and providing warning and control lighting at access points. During the exposure of the radiation source, the following measures must be adopted:

a) Individual monitoring of ionizing radiation dose for all personnel involved, using direct and indirect reading devices, as per the radiation protection plan;

b) Monitoring the controlled area during the activation of the radiation source using a portable radiation meter, by a professional registered with CNEN and with calibrated equipment.


34.7.11 Radioactive material transport operations must be accompanied by specific documentation, complying with current national technical standards, as well as CNEN instructions and recommendations from receivers and/or suppliers of sealed sources.

34.7.12 The measures established in the emergency plan of the contractor’s Respiratory Protection Program must be communicated to the contracting company. The contractor must immediately inform the contracting company of any emergency situation.

34.8 Blasting and Hydroblasting Work

34.8.1 Blasting/hydroblasting must only be performed by trained workers. Workers involved in the blasting/hydroblasting must carry a specific card containing necessary emergency information. Workers must be adequately protected against the risks arising from blasting/hydroblasting activities, especially mechanical risks.

34.8.2 Equipment must only be serviced by qualified workers.

34.8.3 The permit to work must be issued in accordance with the activity to be performed.

34.8.4 The following precautions must be taken when performing work:

a) Delimit, sign, and isolate the work area;

b) Ground the blasting/hydroblasting machine;

c) Use hoses with steel mesh reinforcement and safety devices at their connections to prevent whipping;

d) Check the conditions of equipment, accessories, and safety locks;

e) Eliminate leaks in the blasting/hydroblasting system;

f) Only start the machine with the authorization of the blaster/hydroblaster;

g) Operate the equipment according to the manufacturer’s recommendations, prohibiting operational pressures exceeding those specified for the hoses;

h) Prevent bends, twists, and placing hoses over unprotected edges;

i) Maintain visual contact between operators and the blaster/hydroblaster or use an intermediate observer;

j) Rotate the blaster/hydroblaster, respecting the worker’s physical endurance.

34.8.5 High-pressure hydroblasting activities must be performed continuously for up to one hour, with equal rest periods, in a maximum eight-hour work shift.

34.8.6 Locking or tying the equipment trigger is prohibited.

34.8.7 A drainage system must be maintained to remove the water released during hydroblasting.

34.8.8 The safety device (lock) of the gun must be activated when work is interrupted, especially during level or compartment changes.

34.8.9 The blaster/hydroblaster is prohibited from diverting the jet from its focus.

34.8.10 Sealed lighting powered by extra-low voltage must be used in hydroblasting.

34.8.11 The use of air supply equipment in blasting activities is mandatory. The quality of air used in air supply respiratory protection equipment must be ensured according to the Respiratory Protection Program.

34.8.12 The entire system must be depressurized when the equipment is not in use, under maintenance, or cleaning.

34.8.13 Sandblasting or the use of materials containing a concentration of silica exceeding the permitted legislation is prohibited.

34.9 Painting Activities

34.9.1 When performing painting work, the following measures must be observed:

a) Designate only trained workers;

b) Issue a permit to work in accordance with the activity to be performed, except for works conducted in paint booths;

c) Prevent the execution of incompatible work in adjacent areas;

d) Delimit, sign, and isolate the work area;

e) Use explosion-proof equipment and lighting, with electrical power cables without splices, for painting in confined spaces or with pneumatic spray guns (Airless);

f) Ground the pump used in the pneumatic spray gun system.

34.9.2 The recommendations of the Safety Data Sheet (SDS) must be implemented, training the worker regarding its provisions.

34.9.3 It is prohibited to consume food and carry materials capable of generating sparks, flames, or heat in the painting area and its surroundings.

34.9.4 Air renewal must be provided to eliminate gases and vapors generated during the painting service, continuously monitoring the concentration of contaminants in the air. When the concentration of contaminants is equal to or greater than ten percent of the Lower Explosive Limit (LEL), the service must be immediately stopped and the compartment evacuated, with additional ventilation implemented. Contaminants must be directed out of work areas where there are no nearby ignition sources, in accordance with current legislation.

34.9.5 At the end of the service, ventilation must be maintained, evaluating the concentration of gases according to the LEL. Except for services conducted in paint booths, the area should only be released after authorization from a health and safety professional or, in their absence, by the person responsible for compliance with this NR, observing the lower explosive and exposure limits established in the Preliminary Risk Analysis (PRA).

Preparation and Disposal

34.9.6 Paints must be prepared in a ventilated area, pre-established by the permit to work and enclosed by a containment barrier.

34.9.7 At the worksite, only the quantity of paint needed for immediate use should be available.

34.9.8 Containers with paint or solvent residues must be stored in a protected, ventilated, and signaled location.

34.9.9 Residues must be treated, disposed of, or removed from the establishment’s premises in compliance with environmental legislation.

Confined Space

34.9.10 Electrical supply panels must be installed outside the confined space, at a minimum distance of two meters from its entrance.

34.9.11 Self-contained respiratory protection equipment or a supplied air system must be available and easily accessible for emergency situations.

34.9.12 Only extra-low voltage electrical supply should be used.

34.9.13 The pneumatic paint pump (Airless) must be installed outside the confined space.

Worker Hygiene and Protection

34.9.14 Workers must be provided with individual double lockers, ensuring strict separation of common clothing and work clothing compartments.

34.9.15 Work clothing must be cleaned and replaced daily or, if impossible, disposable material clothing must be provided.

34.9.16 The quality of the air used in compressed air line respiratory protection equipment must be ensured as established in the Respiratory Protection Program (PPR).

34.9.17 Emergency eye wash stations must be maintained near the painting area, and emergency showers must be provided in locations defined by the PRA.

34.10 Load Handling

34.10.1 Electromechanical load handling operations must only be performed by trained and authorized workers.

34.10.2 It must be ensured that load handling equipment and its accessories are used in perfect operational condition and certified, with identification and documentation that can be traced.

34.10.3 An Equipment Register must be prepared, containing at least the following information:

a) A copy of the operation manual provided by the manufacturer, in Portuguese, and if unavailable, reclassification of the equipment by an accredited external certifying body is permitted;

b) Technical specifications;

c) Inspection, maintenance, and certification program;

d) Records of inspections, maintenance, and certifications;

e) Action plan for correcting non-conformities found during inspections, maintenance, or certifications;

f) Identification and signature of the technical responsible person designated by the company to implement this procedure.

Inspection, Maintenance, and Certification of Equipment

34.10.4 Before starting the workday, the operator must inspect and record in a checklist at least the following items:

a) Brakes;

b) Clutches;

c) Controls;

d) Boom mechanisms;

e) Anemometer;

f) Movement mechanisms;

g) Weight and travel safety devices;

h) Levels of lubricants, fuel, and coolant;

i) Control instruments on the panel;

j) Power cables of the equipment;

k) Audible and visual signals;

l) Electromagnet.

34.10.5 Before starting the workday, the signaler must inspect and record in a checklist the load handling accessories, covering at least the following items:

a) Blocks;

b) Clamps;

c) Hooks;

d) Shackles;

e) Swivels;

f) Slings, ropes, and chains;

g) Steel cables;

h) Clips;

i) Connection pins, screws, locks, and other devices;

j) Pulleys at the boom tip and the block;

k) Eyes;

l) Outriggers;

m) Lifting clamps;

n) Scales.

34.10.6 Certification of load handling equipment and its accessories must comply with the following criteria:

a) Be performed by a legally qualified professional, registered with the Regional Council of Engineering and Architecture (CREA);

b) Be recorded in an Inspection Report;

c) Meet the periodicity specified by the certifying body and/or manufacturer. The Inspection Report must contain:

a) The inspected items and the non-conformities found, describing those that prevent operation and those that do not prevent operation;

b) The corrective measures taken for the non-conformities that prevent operation;

c) The correction schedule for non-conformities that do not prevent operation, which do not pose a safety or health hazard, individually or collectively. Equipment will only be released for operation after correcting the non-conformities that prevent operation.

34.10.7 Equipment that fails inspection and/or is inoperative must have this status recorded in its Register and may only operate after new certification.

34.10.8 The use of natural fiber cables in load or personnel handling is prohibited.

Load Handling Procedures

34.10.9 A PRA must be conducted when considered necessary by Occupational Safety and/or the operation supervisor.

34.10.10 Load handling operations must be stopped in adverse weather conditions and/or insufficient lighting.

34.10.11 The following operational procedure must be adopted for load handling:

a) Prohibit tools or any loose objects;

b) Ensure the load is evenly distributed between the sling branches, stabilized, and tied;

c) Ensure the weight is compatible with the equipment’s capacity;

d) Ensure the lifting hook is perpendicular to the piece to be hoisted, verifying the load’s center of gravity position;

e) Use a guide, made of non-conductive material, to position the load;

f) Signal the handling area, ensuring prohibition of transit or presence of people under the suspended load;

g) Signal, de-energize, and ground overhead electrical networks in the handling areas or, if de-energization is not possible, ensure the suspended device maintains double the controlled zone distances from electrical networks (according to Annex I of NR-10), keeping the crane grounded;

h) Ensure that load handling devices and accessories have an indelible and easily visible load capacity identification;

i) Only use hooks with safety latches on the blocks;

j) Ensure gas cylinders, drums, and barrels are only transported in an upright position, inside appropriate devices;

k) Prohibit throwing and dragging load handling accessories;

l) Ensure the steel cable and/or slings do not come into direct contact with the piece edges during transport;

m) Prohibit simultaneous load handling with the same equipment;

n) Prohibit interruption of handling while keeping the load suspended;

o) When interrupting or completing the operation, keep controls in neutral position, brakes applied, locks engaged, and de-energized.

34.10.12 The locations for outrigger placement of lifting equipment must comply with a design prepared by a legally qualified professional, which must be available at the establishment. Outrigger operations must comply with the manufacturer’s recommendations.

34.10.13 The lifting equipment’s operator cabin must have:

a) Ergonomic furniture and environmental conditions, in accordance with NR-17;

b) Protection against sunlight and weather;

c) Clean floor free of materials;

d) Maximum load tables in all usage conditions, written in Portuguese, affixed inside the cabin, and easily visible to the operator.

34.10.14 Before starting operations with rail-mounted load handling equipment, ensure that the rails or pantographs are unobstructed and the stops are in perfect condition.

34.10.15 Before starting operation of a remotely controlled overhead crane, ensure that the transmitter:

a) Corresponds to the equipment to be controlled;

b) Contains numbering corresponding to the equipment;

c) Is in the correct operating direction;

d) Will be used according to the manufacturer’s instructions.

34.10.16 The use of cranes in wind conditions exceeding forty-two kilometers per hour is only permitted with assisted work, limited to seventy-two kilometers per hour.


34.10.17 A signaler must guide aerial load handling.

34.10.18 The signaler must always be within the operator’s line of sight. If the operator cannot see the signaler, radio communication and/or an intermediate signaler must be used.

34.10.19 The signaler must use easily visible, day/night identification that distinguishes them from other workers in the operation area.

34.10.20 The operator must follow only the instructions given by the signaler, except when there is a risk of an accident.

Training and Evaluation

34.10.21 The signaler must receive training with a workload and program content in accordance with Annex I, item 2, of this NR.

34.10.22 For operators, in addition to the provisions of item 34.10.21, complementary training must be provided, in accordance with Annex I, item 3, of this NR.

34.11 Scaffold Assembly and Disassembly

General Measures

34.11.1 The design, sizing, assembly, and disassembly of scaffolds must comply with the provisions of this NR and the applicable official technical standards, or in the absence of these, international technical standards.

34.11.2 The sizing of scaffolds and their support and fixation structure must be carried out by a legally qualified professional.

34.11.3 Scaffolds must be designed and constructed to safely support the working loads they will be subjected to.

34.11.4 The calculation memory of the scaffold design must be kept at the establishment.

34.11.5 Scaffolds must be fixed to firm structures, braced, or anchored at points that provide sufficient resistance to wind action and the loads to be supported. Fixation can be dispensed with when the scaffold tower does not exceed in height three times the smallest dimension of the base.

34.11.6 The cantilever scaffold structure must be braced and anchored to eliminate oscillations.

34.11.7 The uprights must be firmly supported on bases placed on solid, level ground capable of withstanding the imposed stresses and transmitted loads.

34.11.8 Only mobile scaffolds up to six meters high, with lockable casters and supported on flat surfaces, should be used.

34.11.9 Areas around the scaffolds must be signaled and protected against the impact of vehicles or mobile equipment.

34.11.10 When there is a risk of falling towards the inner face, adequate protection with guardrails and toe boards must be provided.

34.11.11 Openings in floors must be protected with fixed guardrails and toe boards.

34.11.12 The scaffold platform must be protected along its entire perimeter, except on the working face, with:

a) Rigid, fixed guardrails consisting of two horizontal metal tubes, placed at distances of seventy centimeters and one meter and twenty centimeters from the board;

b) Toe boards, next to the plank, with a minimum height of twenty centimeters.

34.11.13 Scaffolds with floors situated more than one meter high must be provided with stairs or ramps.

Constituent Elements

34.11.14 For scaffold assembly, only parts of proven quality capable of supporting loads, in good condition, and clean should be used. Parts must be inspected and evaluated periodically, with the results recorded in a checklist under the supervision of a legally qualified professional.

34.11.15 Bracing parts must be fixed, locked, and adjusted on the uprights using bolts, clamps, or pin fittings.

34.11.16 The working floor must be fully planked, non-slip, level, and securely and firmly fixed, remaining unobstructed. If wooden planks are used, they must be dry, with a minimum thickness of thirty-eight millimeters, of proven quality, free of knots, cracks, and other defects that compromise their strength, and painting to cover imperfections is prohibited. The fixation of the planks on the crosspieces must be established in the design and done using clamps and/or annealed wire with a minimum diameter of two and seventy-seven hundredths of a millimeter and/or an equivalent mechanical device that ensures fixation and does not protrude from the scaffold floor more than five millimeters (0.005m), without sharp edges.

34.11.17 The joints of planks or boards must be butt-jointed, supported on crosspieces at each end, with a minimum overhang of fifteen centimeters and a maximum of twenty centimeters.

34.11.18 Overlap joints are allowed, provided that:

a) Foreseen in the scaffold design;

b) In non-linear scaffold segments and/or limited by physical space, validated by a safety professional or, in the absence of one, by the person responsible for compliance with this NR;

c) Supported on a crosspiece and with at least twenty centimeters on each side, creating an overlap of at least forty centimeters, in which case the location must be properly signaled (indicating the presence of the overlap and painting a warning stripe on the floor), and the ends carefully fixed to prevent them from lifting off the floor.

Tubular Scaffolds

34.11.19 Galvanized steel tubes with a minimum wall thickness of three and five-hundredths of a millimeter, or aluminum alloy tubes, calculated according to the design, must be used.

34.11.20 Only tubes less than four meters and fifty centimeters in length should be used as uprights in towers and scaffolds, except in the base assembly.

Multidirectional Scaffolds

34.11.21 The platform of the multidirectional scaffold must be protected along its entire perimeter, except on the working face, with:

a) Rigid, fixed guardrails consisting of two horizontal metal tubes placed at a minimum distance of fifty centimeters and one meter from the board;

b) Toe boards, next to the floor, with a minimum height of fifteen centimeters.

Scaffold Work Requirements

34.11.22 It is prohibited:

a) To remove or block the scaffold’s safety devices;

b) To move scaffolds with workers and/or tools on them;

c) To use ladders or other structures to reach higher places from the scaffold working floor when not foreseen in the design.

34.11.23 If it is necessary to install a hoisting device, the application point must be chosen in accordance with the design, so as not to compromise the scaffold’s stability and safety.

Scaffold Assembly and Disassembly

34.11.24 A permit to work must be issued for scaffold assembly, disassembly, and maintenance.

34.11.25 Assembly, disassembly, and maintenance must be performed by trained workers, under the supervision and responsibility of the immediate supervisor. Assembly, disassembly, and maintenance work must be immediately stopped in case of insufficient lighting or adverse weather conditions, such as rain, winds exceeding forty kilometers per hour, among others. Assembly, disassembly, and maintenance work can be authorized in conditions with winds exceeding forty kilometers per hour and below forty-six kilometers per hour, provided the following requirements are met:  

a) Justification for the impossibility of postponing the services through a document attached to the PRA, signed by a safety professional and the person responsible for executing the services, detailing the applicable additional protective measures;  

b) Performed under the supervision of a safety professional and the person responsible for the activities.

34.11.26 The use of a full-body harness with double lanyard is mandatory for scaffold assemblers.

34.11.27 Scaffold assemblers must have appropriate tools, stored and attached to the belt.

34.11.28 The area must be isolated during assembly, disassembly, or maintenance services, allowing access only to the team involved in the activities.

34.11.29 Scaffolds in the process of assembly, disassembly, or maintenance must be signaled with red signs indicating prohibition of use or green signs after release.

Scaffold Release for Use

34.11.30 Scaffolds should only be used after being approved by the health and safety professional or, in their absence, by the person responsible for compliance with this NR, together with the person in charge of the service. The approval must be recorded on the “Scaffold Release Form” which will be completed, signed, and affixed to the scaffold.


34.11.31 Materials to be used in scaffold assembly must be stored in an illuminated, level, non-slip location, and protected from the weather.

34.11.32 During storage, planks and tubes must be sorted by size, properly supported, and stored on sturdy shelves, in pre-established locations.

34.11.33 Remaining materials must be collected, transported, and stored at the end of the scaffold assembly or disassembly.

34.12 Portable Equipment

34.12.1 Preventive maintenance must be carried out according to a program approved by the technical responsible person, keeping its record in the company.

34.12.2 The equipment must have a start and stop device on its structure.

34.12.3 The maximum pressure or working voltage of the equipment must be identified on its structure, visibly and indelibly.

34.12.4 It must be ensured that work with portable rotary equipment is performed by trained workers.

34.12.5 Equipment that poses a risk of parts breaking or projecting pieces must have its alternating or rotary movements protected.

34.12.6 For work with portable machines and equipment, the following measures must be provided:

a) Inspect the equipment and accessories before starting activities;

b) Ensure a safe and clean work area for activities with rotary machines;

c) Use Collective Protective equipment (CPE) to prevent the projection of sparks;

d) Use the machines and accessories according to the manufacturer’s recommendations;

e) Operate only equipment in perfect condition and working order.

34.12.7 It is forbidden to remove the protective hood from machines that use a rigid disk.

34.12.8 Accessories must be protected against impacts, vibrations, and chemical products.

34.12.9 It is prohibited to:

a) Use portable rotary equipment to sharpen tools;

b) Use the power cable to move or disconnect the equipment;

c) Use the cutting disc for grinding;

d) Use portable equipment as a bench machine, except when specified by the manufacturer.

34.12.10 The power cable must be kept away from the rotation area.

34.12.11 It must be ensured that the start device is in the “off” position before being connected to the power system.

34.12.12 The exchange or tightening of accessories must be done with the equipment disconnected from the power source, using appropriate tools.

34.12.13 Discs must be compatible with the rotation of the equipment.

34.12.14 When using pneumatic equipment, a safety cable must be used to prevent whipping. The equipment must be depressurized when not in use, during maintenance, or cleaning.

34.13 Temporary Electrical Installations

34.13.1 Electrical cables must be arranged in overhead or underground structures to ensure the protection of workers and not obstruct accesses, passages, and escape routes.

34.13.2 Only two or three-conductor cables with plastic (PP) or rubber (PB) insulation should be used in electrical circuits.

34.13.3 Distribution boxes must be:

a) Adequately sized;

b) Made of non-combustible material, free of sharp edges;

c) Grounded and protected by circuit breakers;

d) Equipped with shock protection devices and Residual Current Device (RCD);

e) Identified by voltage and marked to prevent electric shock;

f) Equipped with doors and locks;

g) Equipped with a fixed barrier to prevent accidental contact with energized parts.

34.13.4 Manual machines and welding machines must be connected via plugs to socket panels protected by circuit breakers.

34.13.5 Luminaires must be powered by a dedicated circuit.

34.13.6 Temporary luminaires must be installed and securely fixed by authorized electricians.

34.13.7 Splices that may be submerged must be vulcanized or receive a watertight external cover.

34.13.8 Tubular copper alloy connectors, crimped or soldered, must be used in splices to ensure circuit continuity and minimize heating. For stationary alternating current cables, split-bolt connectors may be used. Once completed, the splice must be insulated with self-fusing tape.

34.13.9 For welding cables, the minimum allowable distance between splices must be three meters.

34.13.10 The insulation cover must be restored whenever there is damage to its surface. The conductor, if exposed, must be insulated with self-fusing tape.

34.14 Leak Tests

34.14.1 Leak testing is considered a non-destructive test performed by applying pressure to a piece, compartment, or pipeline to detect leaks.

34.14.2 The preparation and qualification of the procedure, as well as the execution and supervision of the test, must be carried out by a qualified professional. A qualified worker for leak testing is one who has undergone theoretical and practical training with a workload and program content in accordance with item 5 of Annex I. The qualified worker in leak testing must receive periodic training every 12 months, with a minimum duration of 8 hours. Training must be conducted by instructors with proven proficiency in the subject, under the responsibility of a legally qualified professional.

34.14.3 Workers performing leak tests must wear easily visible identification that distinguishes them from others.

34.14.4 The test system must have a pressure regulator, safety valve, relief valve, and calibrated and easily readable pressure gauge.

34.14.5 The test system design must be prepared by a legally qualified professional. The calculation memory of the test system design must be kept at the establishment.

34.14.6 Before starting activities, the following safety measures must be taken:

a) Issue the permit to work;

b) Evacuate, isolate, and signal the risk area defined in the procedure;

c) Implement CPE;

d) In the technical infeasibility of using CPE, a PRA must be prepared containing alternative measures to ensure the worker’s physical integrity.

34.14.7 Expansion joints, accessories, instruments, and pressure gauges that cannot be subjected to pressure tests must be removed and isolated.

34.14.8 All joints must be exposed, without insulation or coating.

34.14.9 Repair, retightening, or hammering on the tested system is prohibited when pressurized.

34.14.10 A safety valve with an opening pressure adjusted according to the test procedure must always be used.

34.14.11 After reaching the test pressure, the test system must be isolated from the tested system.

34.14.12 When the test is interrupted, the systems must not be kept pressurized.

34.14.13 Depressurization is only allowed through the system’s relief valve.

34.14.14 When using flexible lines, a safety cable must be used to prevent whipping.

34.14.15 During the tests, the pressure must be gradually increased to the final test pressure.

34.15 Temporary Fixation and Stabilization of Structural Elements

34.15.1 Temporary fixation and stabilization of structural elements involve activities where a set of elements is positioned in a stable equilibrium using temporary devices, shoring, special supports, or lifting equipment. This provision applies to the phases of processing, sub-assembly, assembly, building, repair, rework, and vertical storage of parts. The temporary fixation or stabilization activity must be under the technical responsibility of a legally qualified professional, formally appointed by the employer. The technical responsible person, in accordance with the tables in Annex II, must:

a) Classify the structural elements to which this provision applies, considering at least weight and wind area;

b) Establish the procedure for fixation and stabilization activities. The classification of the structural element, considering its weight and wind area, must address the most critical situation to select the type of stabilization procedure (general (G) or specific (E), as cited in the tables in Annex II) to be adopted during fixation and stabilization.

34.15.2 The general procedure (G) must contain at least:

a) The fixation and stabilization system of the structural element through lifting equipment and/or temporary devices;

b) The sequence of activity execution;

c) Inspections;

d) Responsibilities.

34.15.3 The specific procedure (E), in addition to what is described in item 34.15.2, must include:

a) Risk Analysis;

b) Permit to Work;

c) Isolation and signaling;

d) Representation through tables, diagrams, or specific drawings;

e) Basis in specific structural calculation memory.

34.15.4 Fixation and stabilization activities must be supervised by an Operational Responsible (OR) previously trained in the procedures, under the responsibility of the legally qualified professional defined in item Only the OR must authorize the release of the lifting equipment or the removal of temporary devices.

34.15.5 The removal of temporary devices must be carried out when the structural element is in one of the following situations:

a) Permanently fixed;

b) Temporarily fixed by welding, in accordance with the work procedure;

c) Supported by lifting equipment.

34.16 Floating Structures

34.16.1 The floating structure must comply with the provisions of this Regulatory Standard and others, as well as the Maritime Authority Standards (NORMAM/DPC). For the application of this item, a floating structure is considered any vessel approved by the maritime authority for operation exclusively in sheltered waters intended for support services to the naval industry. Exempt from the application of this item are inspection, survey, and transport services carried out using motorboats.

34.16.2 The floating structure must:

a) Be previously registered with the Maritime Authority, through the Port Captaincies, Delegations, or subordinate Agencies;

b) Have the Vessel Registration Title (TIE) or the Provisional Maritime Property Registration (PRPM);

c) Have visible and durable markings on the hull.

34.16.3 Navigation and labor activities on floating structures must only be performed in sheltered and inland waters, according to the Standards and Procedures of the Jurisdiction Port Captaincy (NPCP), corresponding to the service execution locations.

34.16.4 It is prohibited to carry out services with support from floating structures in open seas.

34.16.5 The owner of the floating structure is responsible for:

a) Ensuring that onboard services are interrupted whenever the maximum sea and wind conditions, corresponding to force 3 of the Beaufort Scale (wind speed from 12 km/h to 19 km/h and wave height between 0.5 meters and 1.25 meters), are reached;

b) Ensuring that workers are evacuated from non-propelled vessels whenever the maximum sea and wind conditions corresponding to force 5 of the Beaufort Scale (wind speed from 29 km/h to 38 km/h and wave height between 2.5 meters and 4.0 meters) are reached;

c) Ensuring that the floating structure, equipped with its own propulsion, moves to safe sea and wind conditions whenever the maximum sea and wind conditions corresponding to force 5 of the Beaufort Scale (wind speed from 29 km/h to 38 km/h and wave height between 2.5 meters and 4.0 meters) are reached.

34.16.6 In the case of non-propelled floating structures, the company must have an adequate vessel to transport workers between the floating structure and the support base, and vice versa. Alternatively, the floating structure can be provided with safety lines (mooring systems) attached to the support base, allowing mechanical proximity to the base using equipment designed for this purpose.

34.16.7 The floating structure must be signaled according to the current standards of NR-26 (Safety Signs).

34.16.8 The lighting of workplaces must comply with the provisions in subitem of NR-17 (Ergonomics).

34.16.9 Fixed and portable electrical equipment used in explosive atmospheres due to gases and vapors or combustible dust must comply with the applicable technical standards.

34.16.10 Surfaces and work floors must be covered with non-slip and non-combustible material.

34.16.11 Openings in floors and work surfaces must be equipped with resistant protections to prevent the fall of people or objects.

34.16.12 Materials and tools must be adequately secured or stored to prevent involuntary movement.

34.16.13 Guardrails (handrails), with a minimum height of one meter, must be installed around the entire floating structure, resistant and firmly fixed to its structure, and may be removable during service execution when necessary.

34.16.14 The floating structure must be equipped with Class III life jackets, approved by the Brazilian Navy, in sufficient quantity to serve all workers and crew on board. In activities performed near the edges of the floating structure, workers must wear Class IV life jackets, according to the activities performed, approved by the Brazilian Navy.

34.16.15 It is mandatory to signal and install fire extinguishers in sufficient number and capacity to extinguish fires, proportional to the size of the floating structure and the types of services performed on board.

34.16.16 Workers on floating structure activities must have access to a bathroom, located at a maximum distance of 50 meters from the workplace, in the proportion of 1 bathroom for every 20 workers or fraction, separated by gender, with the following characteristics:

a) Maintained in perfect hygienic and functional condition;

b) Equipped with a toilet, sink, and covered trash can;

c) Provided with disposable hand towels, toilet paper, and liquid or paste soap;

d) Supplied with sufficient water suitable for human consumption in the bathrooms. The dimensioning or different distance described in subitem 34.16.16 may be altered due to technical infeasibility, provided it is duly certified by a qualified safety or health professional.

34.16.17 Meals must be taken primarily in the shipyard’s canteen or in a specific area designated for this purpose on the floating structure. When workers remain on board during meal periods due to service needs, the floating structure must have an appropriate place for meals, with the following characteristics:

a) Clean, airy, and well-lit;

b) Isolated and covered to protect against the weather;

c) Equipped with tables and seats corresponding to at least one-third of the number of workers on board;

d) Sinks installed nearby or in the same place where meals are taken;

e) A place for storing and preserving food.

34.16.18 The company must ensure workers who need to remain on board due to service needs have free access to good quality food provided under hygienic and conservation conditions, as required by current legislation. The menu must be balanced and prepared by a legally qualified nutritionist, containing content that meets the nutritional requirements necessary for health conditions, suitable for the type of work activity, and ensuring well-being on board. Additionally, the company must provide specific diets for workers’ pathologies, according to medical prescription. The contracting company, the owner of the floating structure, must ensure that the contracted company providing catering services on board meets the requirements for the food safety management system established by ABNT NBR ISO 22000 and its subsequent amendments.

34.16.19 It is prohibited to consume any food in environments where there is a possibility of exposure to chemical, physical, or biological agents.

34.16.20 It is mandatory to provide potable water on board under hygienic conditions, filtered and fresh, through inclined jet drinking fountains or similar equipment that ensures the same conditions. If it is impossible to install drinking fountains, potable water on board can be provided in hermetically sealed portable containers that are easy to clean, made of appropriate materials to avoid contamination. The container mentioned in subitem must be sanitized daily. The distance the worker has to travel from their workstation to the drinking fountain or portable container must be less than 50 meters horizontally and 5 meters vertically. In hot climates or seasons, the supply of chilled water to all workers on board must be ensured. The company must supply enough potable water on board to meet the individual needs of workers, in an amount exceeding 1/4 liter (250ml) per hour per worker. The storage and transportation locations for potable water and its sources must be:

a) Protected against any contamination;

b) Sheltered from the weather;

c) Subject to a bi-weekly sanitation process, supervised by the occupational health team and recorded in a technical report available to workers, with the sanitation record affixed to the reservoir, if any;

d) Located separately from non-potable water sources, with warning signs posted in an easily visible, legible, and indelible manner. The water quality control procedure for human consumption and its potability standards, health promotion in ports, and good practices for the water supply system or alternative collective solution must comply, respectively, with the Ministry of Health Ordinance No. 2.914, December 12, 2011, Collegiate Board Resolution – RDC No. 72, December 29, 2009, and RDC No. 91, June 30, 2016, and their subsequent amendments.

34.16.21 The use of shared cups, plates, cutlery, and other utensils without prior sanitation, or improvised items for consuming water or food, is prohibited. The use of disposable materials is permitted. Disposable cups must be stored in a clean place and placed in cup holders to allow for individual retrieval.

34.17 Emergency Response Plan (ERP)

34.17.1 The company must develop and implement the ERP. The ERP is subject to the complementary provisions in:

a) Regulatory Standards of Ordinance MTb No. 3.214/78 and subsequent amendments;

b) National technical standards;

c) State Fire Codes, in the case of buildings;

d) Maritime Authority Standards of the Directorate of Ports and Coasts (NORMAN/DPC), in the case of vessels and structures such as ships, boats, launches, fixed or floating platforms, among others.

34.17.2 The ERP must:

a) Be developed according to emergency scenarios selected from possible accidental scenarios identified in risk analyses;

b) Include actions to be taken in emergency scenarios, considering the characteristics and complexity of buildings, vessels, and structures;

c) Include actions to be taken in emergency scenarios, considering the characteristics of the installation;

d) Provide appropriate guidelines for each level of involvement of company employees, contractors, and visitors;

e) Be prepared by a legally qualified occupational safety professional;

f) Be periodically reviewed by a legally qualified occupational safety professional.

34.17.3 The ERP must contain:

a) Company identification (legal name and CNPJ number) and contact information (address, phone number, email address);

b) Identification of the technical responsible person for the preparation and review of the PRE;

c) Delimitation of the scope of the ERP actions;

d) Response actions for each emergency scenario;

e) A matrix of responsibilities;

f) Dimensioning of resources based on identified emergency scenarios, including first aid;

g) Definition of access and evacuation routes for industrial facilities and vessels, including floating structures, where applicable;

h) Communication procedure with contractors;

i) Procedures for visitor orientation regarding existing risks and emergency procedures;

j) Procedures for mobilizing complementary response resources and structures and relevant public authorities, as well as triggering the Mutual Aid Plan (PAM), if applicable;

k) Procedures for communicating the event that triggered the ERP activation;

l) The periodicity, program content, and duration of emergency team training. The company must maintain an updated list, according to the responsibility matrix, of those involved in emergency response actions. The ERP must be coordinated with other Regulatory Standards and with the ERP of the vessels where services are being performed (ships, platforms, maritime support units, maintenance and safety units, and other types of vessels).

34.17.4 The company must conduct simulated exercises to assess the effectiveness of the ERP. The simulated exercises must:

a) Be conducted according to the mapped emergency scenarios;

b) Follow the planning and schedule established by the technical responsible person;

c) Be conducted during normal working hours, considering work shifts, if applicable. After conducting simulated exercises or in real situations, a report must be prepared to verify the effectiveness of the ERP, detect possible failures, and support necessary adjustments.

34.17.5 The ERP must be revised in the following situations:

a) When there are changes to possible accidental scenarios;

b) When recommended in the evaluation reports of simulated exercises or real situation evaluations;

c) Every two years.

34.17.6 The ERP, its revisions, and the evaluation reports of simulated exercises and ERP activation in real situations must be presented to the CIPA, if applicable.

34.17.7 Members of the emergency response team must undergo initial and periodic training and specific medical examinations for the role they will perform in the ERP, including psychosocial risk factors.

34.17.8 Participation in emergency response teams is voluntary for workers, except in cases where the nature of the role requires it.

34.18 Final Provisions

34.18.1 The use of personal adornments is prohibited in the industrial area.

34.18.2 The use of contact lenses is prohibited during hot work.

34.18.3 Workers must be protected against excessive sun exposure, heat, cold, and humidity in outdoor work.

34.18.4 The use of solvents, compressed air, and pressurized gases to clean skin or clothing is prohibited.

34.18.5 Workplaces must be kept in a state of cleanliness compatible with the activity. Cleaning must be done using methods that minimize dust generation. The use of compressed air as a cleaning method is prohibited.

34.18.6 The vessel must be equipped with emergency lighting and signage to enable evacuation in case of power failure.

34.18.7 Employers must provide work clothing free of charge and replace it when damaged.

34.18.8 Employers must provide potable, filtered, and fresh water to workers through inclined jet drinking fountains or similar equipment that ensures the same conditions, at a ratio of one for every twenty-five workers or fraction thereof. This provision must ensure that the distance from the workstation to the drinking fountain does not exceed one hundred meters horizontally and five meters vertically. If it is impossible to install drinking fountains within the limits mentioned in the previous subitem, the employer must ensure the supply of potable, filtered, and fresh water at the workstations using hermetically sealed portable containers made of appropriate material, prohibiting the use of shared cups. In hot climates or seasons, the supply of chilled water must be guaranteed.

34.18.9 In the event of a fatal accident, the following measures must be taken:

a) Immediately notify the competent police authority and the regional office of the Ministry of Labor and Employment, which will immediately inform the relevant trade union;

b) Isolate the area directly related to the accident, maintaining its characteristics until released by the competent police authority and the regional office of the Ministry of Labor and Employment. The release of the site may be granted after investigation by the competent regional office of the Ministry of Labor and Employment, which will occur within a maximum of seventy-two hours from the receipt of the written notification to the said office. After this period, the measures mentioned in item 34.18.9(b) may be suspended.

34.18.10 The industrial production area must be equipped with a stormwater drainage system.

34.18.11 Visual communication regarding accident and occupational disease prevention must be displayed in visible places for workers.

34.18.12 A recreation area for workers must be provided at the shipyard.

34.18.13 Alternative Solutions Companies may adopt alternative solutions regarding Collective Protective measures, work techniques, and the use of equipment, technologies, and other devices not covered in this NR, provided they meet the following requirements:

a) Promote technological advancements in occupational health and safety;

b) Aim to implement control measures and preventive safety systems in processes, conditions, and the work environment;

c) Ensure the safe and healthy execution of tasks and activities. The alternative solutions must meet the following requirements:

a) Be under the technical responsibility of legally qualified professionals;

b) Be preceded by a Risk Analysis (RA) and Permit to Work (PTW);

c) Be described in a Work Safety Procedure. The technical responsibility for alternative solutions is exercised by a legally qualified engineer in the involved modality and a safety engineer. In addition to the provisions in subitem 34.4.2, a copy of the Risk Analysis must be kept at the workfronts. Tasks performed using alternative solutions must be included in Work Safety Procedures containing:

a) The risks to which workers are exposed;

b) A description of the equipment and Collective Protective measures;

c) The technical specification of Personal Protective Equipment (PPE);

d) Instructions on the use of Collective Protective Equipment (CPE) and PPE according to the task stages;

e) Preventive actions to be observed during service execution.

34.19 Glossary

Airless painting equipment: Pneumatic spray painting equipment that uses compressed air pressure to apply the coating.

Anchor point: Point intended to support the load of people for the connection of safety devices such as ropes, steel cables, fall arresters, and lanyards.

Anchor point, temporary: One that has been evaluated and selected for temporary use to support the load of people during a specific service.

Area controlled: Area subjected to special protection and safety rules, under the supervision of a professional with knowledge to prevent the spread of radioactive contamination and limit the extent of potential exposures.

Area for hot work, not previously designated: Work area not designed for this purpose, temporarily adapted for hot work, such as work carried out on board ships and in blocks, where combustible or flammable materials have been removed or protected from exposure to ignition sources.

Area for hot work, previously designated: Work area designed and approved for hot work, built with non-combustible or fire-resistant materials, free of flammable or combustible materials, and segregated from adjacent areas; such as workshops, pipe shops, and maintenance shops.

Beaufort scale: Classifies the intensity of winds, taking into account their speed and the resulting effects of winds on sea and land.

Bracing: System of connections between the main elements of a structure to increase the rigidity of the assembly.

Cabin for painting: Area designed by a legally qualified professional exclusively for the treatment and painting of surfaces, made of non-combustible or fire-resistant materials, equipped with a ventilation/exhaust system, filtration, and environmental controls.

Cable, energy: Conductor made up of a bundle of wires or a set of wire groups not isolated from each other.

Capacity of lifting equipment: Maximum load that the lifting equipment can support for a given lifting configuration.

Collimator: Device of special shape used to shield and direct radiation through an opening to reduce the area of radiation.

Conductor or electrical conductor: Metallic component used to transport electrical energy or transmit electrical signals.

Daily Safety Talk: Daily meeting, of short duration, during which topics of safety, occupational health, and environment are discussed.

Descaling: Preparation of a surface by removing coatings or defects, such as burrs and weld seam imperfections, using abrasive tools.

Dose monitoring, individual: Monitoring of external dose, contamination, or incorporation of radionuclides in individuals.

Electric isolation: Process intended to prevent the passage of electric current by interposing insulating materials.

Extra low voltage: Voltage not exceeding fifty volts in alternating current or one hundred and twenty volts in direct current, between phases or between phase and ground.

Fall factor: Ratio between the distance the worker would fall and the length of the equipment that will arrest the fall.

Fall arrester: Automatic locking device intended to connect the safety harness to the safety cable, with Approval Certificate (CA).

Harness, parachutist type: Personal Protective Equipment used for work at height where there is a risk of falling.

Hoist: Vehicle equipped with a metallic boom of varying dimensions and a motor with power capable of lifting and transporting heavy loads.

Hydroblasting: Surface treatment using pressurized water jet to remove adhered deposits, which can be of low pressure (up to five thousand psi), high pressure (from five thousand psi to twenty thousand psi), or ultra-high pressure (above twenty thousand psi).

Industrial radiography: Non-destructive testing of materials using a radiation source.

Individual Occupationally Exposed (IOE): Individual subject to occupational exposure to ionizing radiation, according to criteria established by CNEN.

Lifting accessories: Devices used in load handling, situated between the load and the lifting cable of the transport equipment, such as pulleys, slings, shackles, scales, chains, clamps, swivels, suspension eyes, belts, and hooks.

Linkage, temporary fixing or stabilization devices: Equipment and pieces used to temporarily join or support structural elements, such as hoists, tirfor, guy lines, temporary beams, lifting eyes, reinforcements, dogs, and butterflies.

Monitoring, dose: See “Dose monitoring, individual.”

Paint booth: See “Cabin for painting.”

Permit to work (PTW): Written document containing a set of control measures aimed at developing safe work, as well as emergency and rescue measures.

Platform, elevating: Work platform at height with vertical movement by hydraulic, articulated, or rack and pinion system.

Preliminary Risk Analysis (PRA): Initial assessment of potential risks, their causes, consequences, and control measures.

Radiation source: Equipment or material that emits or is capable of emitting ionizing radiation or releasing radioactive substances or materials.

Radiation protection: Set of measures aimed at protecting humans, their descendants, and the environment from possible undesired effects caused by ionizing radiation, according to basic principles established by CNEN.

Radiation Protection Supervisor (RPS): Worker certified by CNEN to supervise the application of radioprotection measures through the Radioprotection Service.

Radioprotection: See “Radiation protection.”

Rope access: Also known as industrial climbing, it is a set of specific techniques suitable for industrial areas, intended for work at height or in environments of difficult access.

Scaffolding: Platform for work at elevated heights through a temporary structure or support device.

Scaffolding, cantilever: Fixed scaffold supported by cantilever beams.

Scaffolding, external: Metal scaffold simply supported, fixed to the structure along the side or housing.

Scaffolding, simply supported: Scaffold whose platform is simply supported, which may be fixed or move horizontally.

Shoring: Vertical structural member of scaffold, towers, and stairs.

Signalman/Rigger: Trained worker who performs and verifies the lashing of the load, issuing necessary signals to the equipment operator during the movement.

Slackline: Set of objects, supported by slings, to be moved by lifting equipment.

Spray painting, pneumatic (Airless): See “Airless painting equipment.”

Split-bolt: Type of electrical cable connector in the form of a slotted bolt.

Supervision, Radiological Protection: See “Radiation Protection Supervisor (RPS).”

Suspended inert: Situation in which a worker remains suspended by the safety system until rescue.

Suspension clamp: Shield fixed to a machine to protect the operator against projections of fragments, sparks, or accidental contact.

Wind area: Largest area of the piece exposed to wind action.