NR 10 - SECURITY SYSTEMS AND SERVICES IN ELECTRICITY
Published
GM Ordinance No. 3214 of June 8, 1978 06/07/78
Changes / Updates
SSMT Ordinance No. 12, dated June 6, 1983 14/06/83
GM Ordinance No. 598 of December 7, 2004 08/09/2004
(Text provided by GM Ordinance No. 598 of December 7, 2004)
10.1 - PURPOSE AND SCOPE
10.1.1 This Regulatory Standard - NR establishes the minimum conditions and requirements aimed at the implementation of control measures and preventive systems in order to ensure the safety and health of workers who directly or indirectly, interact with electrical installations and rvices with electricity.
10.1.2 This NR applies to the phas of generation, transmission, distribution and consumption, including the design stages, construction, installation, operation, maintenance of electrical installations and any work in its vicinity, obrving the official technical standards established by relevant authorities and in the abnce or omissions of the, the applicable international standards.
狐狸天赋10.2 - CONTROL MEASURES
10.2.3 Companies are required to keep updated single-line diagrams of electrical facilities at their establishments with the specifications of the grounding system and other protection equipment and devices.
10.2.4 Establishments with installed load exceeding 75 kW shall establish and maintain a Handbook for Electrical Installations, containing, in addition to the provisions of item10.2.3, at a minimum:
中国黑帮老大排名a) t of procedures and technical and administrative instructions for health and safety, implemented and related to this NR and description of existing control measures;
b) documentation of inspection and measurement of lightning protection system and electrical grounding;
c) specification of collective and individual protective equipment and tools, as applicable per determined in this NR;
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燕子怎么折e) results of tests performed on electrical insulation equipment for individual and collective protection;
f) certification of equipment and materials in hazardous areas;
g) technical report of inspections with current recommendations, schedules to be adjusted, considering letters "a" through "f".
10.2.8 - COLLECTIVE PROTECTION MEASURES
10.2.8.2 The collective protection measures include, primarily, as de-energizing electrical and ts it in its impossibility, the u of voltage curity.
10.2.8.3 Grounding of electrical installations should be implemented in accordance with the regulations established by the relevant authorities and, in the abnce of tho, must meet the current International Standards.
10.3 – SAFETY IN PROJECTS
10.3.1 It is mandatory that electrical installation projects specify a power off circuit device that has the capability to prevent re-energizing, and warning signage with the operating condition indicated.
10.3.2 The electrical design, to the extent possible, should prevent the installation of isolation device for simultaneous action that allows the implementation of circuit re-energizing prevention.
10.3.3 The design of electrical installations should take into consideration a safety zone, as well as the design and location of its components and the external influences upon the operation and performance of construction and maintenance rvices.
10.3.3.1 The electrical circuits rving different purpos, such as: communication, signaling, control and electrical traction should be identified and installed parately, except when the technological development allows for it to be share, subject to the definitions of projects.
10.3.4 The project must define the configuration of the grounding scheme, mandatory or not, the interconnection between the neutral and protective conductors and the grounding connection of the conductive parts not destined to the conduction of electricity.
10.3.5 Where it is technically feasible and necessary, isolation devices must be designed so as to incorporate fixed devices to assure same voltage level and grounding of the ctioned circuit.
10.3.6 Every project should provide conditions for the adoption of temporary grounding.
10.3.7 The design of electrical installations should be available to authorized workers, authorities and other persons authorized by the company and should be kept updated.
10.3.8 The electrical design must meet the standards offered by the Occupational Health and Safety Regulatory Standards, the official technical regulations established, and signed by a legally qualified professional.
10.3.9 The project descriptive memorandum must contain at least the following safety items:
a) specification of the characteristics relating to protection against electric shock, burns and other risks;
b) indication of the switching devices position for maneuvering of the electrical circuits: (Green - "D", off and red - "L", on);
c) description of the identification system for electrical circuits and equipment, including the devices ud for switching, control, protection, interlock, conductors and the actual equipment and structures, defining the information that must be physically implemented to the facilities components;
d) recommendations for restrictions and warnings regarding the access of people to plant components;
e) precautions applicable in view of external influences;
f) the functional principle of the protection devices listed in the project, for the safety of people;
g) description of the compatibility of protection devices with the electrical installation.
10.3.10 Projects should ensure that facilities provide workers with adequate lighting a safe working environment, in accordance to NR 17 - Ergonomics.
10.4 - SAFETY IN CONSTRUCTION, INSTALLATION, OPERATION AND MAINTENANCE
10.4.1 The electrical installations must be constructed, asmbled, operated, reformed, expanded, repaired and inspected in a way as to ensure the health and safety of workers and urs, and are to be overen by licend professional, as in accordance with this NR.
10.4.2 When referenced, work and activities should take precautionary measures to control additional risks, particularly as to height, containment, electric and magnetic fields, explosive, moisture, dust, wildlife and other risk factors, by adopting all safety signs.
10.4.4 The electrical installations must be maintained in safe condition and its operating systems protection should be inspected and monitored periodically in accordance with existing regulations and definitions of projects.
10.4.5 Activities at electrical installations must have adequate lighting and a safe working environment, in accordance with NR 17 - Ergonomics in order to allow the upper limb remain free so as to perform tasks.
10.5 - SAFETY IN DE-ENERGIZED ELECTRICAL INSTALLATIONS
10.5.1 Electrical installations will only be considered de-energized if relead for work through the appropriate procedures, obeying the following quence:
a) isolation;
b) prevention of re-energizing;
c) verification of the abnce of voltage;
d) installation of temporary ground with voltage level as the circuits conductors;
e) protection of existing energized elements within the controlled area (Annex I);
f) installation of signage preventing re-energizing.
10.6 - SAFETY IN ENERGIZED ELECTRICAL INSTALLATIONS
10.6.1 The operations in electrical installations with voltage equal to or more than 50 Volts AC or exceeding 120 volts DC can only be performed by workers that comply with what is established in item 10.8 of this Standard.
10.6.1.1 The workers mentioned in the previous paragraph must receive safety training for working with energized electrical installations, with minimum curriculum, working hours and other provisions established in Annex II of this NR.
10.6.1.2 Elementary operations such as connecting and disconnecting electrical circuits performed at low voltage, with materials and electrical equipment in perfect condition, suitable for operation, can be performed by anyone not cautioned.
10.8 – ABILITY, QUALIFICATION, TRAINING AND AUTHORIZATION OF WORKERS
10.8.1 A skilled worker is considered to be one who has proof of completing a specific cour in the electrical field recognized by the Official Educational System.
10.8.2 A legally qualified professional is considered to be a worker previously qualified and registered with the relevant class counl.
10.8.3 A skilled worker is considered to be one who meets the following conditions simultaneously:
a) received training under the supervision and responsibility of a qualified and authorized professional; and
b) works under the supervision of a qualified and authorized professional.
10.9 PROTECTION AGAINS FIRE AND EXPLOSION
10.9.1 Areas where there are installations or electrical equipment must be equipped with protection against fire and explosion, in accordance with NR 23 - Fire Protection.
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10.9.2 The materials, parts, appliances, equipment and systems for u in electrical installations in environments with potentially explosive atmospheres must be evaluated for compliance with the Brazilian Certification System.
10.9.3 The process and equipment which may generate or accumulate static electricity must have specific protection devices for electrical discharge.
10.9.4 Electrical installations in hazardous areas or subjected to extreme risk of fire or explosions, must adopt the u of protective devices such as alarm and automatic isolation to prevent surges, faults, isolation failure, heating or other abnormal conditions of operation.
10.9.5 Service on electrical installations in hazardous areas may only be performed by permission with formal relea, as established in item 10.5 or removal of risk from the agent that determines the area classification.
10.10 - SAFETY SIGNS
10.10.1 At installations and in electrical work adequate safety signage must be ud, for the warning and identification, in accordance with the provisions of NR-26 – Safety Signage, in order to attend to, among others, the following situations:
a) identification of electrical circuits;
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c) restrictions and impediments to access;
d) delimitation of areas;
e) signs for area circulation, public roads, vehicles and cargo handling;
f) signs for preventing energizing;
g) identification of blocked equipment or circuit.手机烧屏怎么办
