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Hydrogen is a promising energy carrier for future low-carbon systems, but its high flammability, wide explosion range, and low ignition energy present significant safety challenges. This paper proposes an integrated ATEX-based risk assessment methodology specifically designed for hydrogen storage and utilization systems. The methodology combines regulatory requirements, including EN 1127-1:2019, with a hydrogen-specific risk matrix, ATEX zone classification, and operational risk mitigation measures. A high-pressur...

The flameproof enclosure type of protection is a safety method designed to prevent the ignition of an explosive atmosphere in hazardous environments. It involves enclosing components that may generate sparks, electrical arcs, or high temperatures within a robust, explosion-resistant housing. This enclosure is engineered to withstand the pressure generated by an internal explosion of a flammable gas mixture, ensuring that the explosion does not propagate to the surrounding atmosphere. This type of protection is par...

Electrical installations in spaces classified as being in danger of explosive atmospheres have special characteristics to correspond to operation in such atmospheres. For safety reasons in these areas, it is essential that during the lifetime of these installations, the integrity of these special characteristics be maintained. The assessment of explosion-protected electrical equipment within the scope of certification is of paramount importance in view of the risk of explosion which must be minimized to ensure the...

The type of protection flameproof enclosure consists in placing the parts that can ignite an explosive atmosphere into an enclosure that can withstand an internal explosion and it prevents the transmission of the explosion effects (hot gases, flames, incandescent particles etc.) capable of ignition to the external explosive atmosphere in which the equipment is placed. The purpose of the paper is to underline some specific situations that can occur during the tests in explosive mixtures needed to verify the charact...

Electrical equipment that operates in a potentially explosive atmosphere, have characteristics specially designed for operation in this area. For security reasons, it is essential that the integrity of these special features be preserved in these areas throughout the life of the installation. Using electric equipment in potentially explosive atmospheres brings forward several particularities therefore the problems that appear during the design, construction and operation of electrical devices and installations bri...

A type of protection represents specific measures applied to equipment to avoid ignition of a surrounding explosive atmosphere. Flameproof enclosure -d- consists in placing the parts that could ignite an explosive atmosphere inside of an enclosure that can withstand the pressure developed during an internal explosion of an explosive mixture and which prevents the explosion transmission to the explosive atmosphere surrounding the enclosure. Increased safety -e- represents a type of protection that consists in apply...

Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement of goods when they meet the essential safety requirements at European level. Electrical equipment that operates in potentially explosive atmosphere, have characteristics specially designed for operation in this area...

The paper presents issues regarding uncertainty involved in the test process to ignition of small components for intrinsically safe equipment. In the first part of the paper, the classification of explosion-protected equipment is presented. In power generation and also in other industrial areas, the incidence of flammable substances is a common factor. As a consequence of this, the risk of explosion may arise. On the other hand, installations located in areas endangered by the presence of flammable substances must...

The paper aims to address what types of protection can be applied to galvanic elements and batteries that are used in potentially explosive atmospheres. In order to keep electrical equipment in operation in environments with potentially explosive atmospheres under harsh conditions, including galvanic elements and batteries, a certain type of protection must be applied for safe operation. The types of protection applied to galvanic elements and batteries are made in accordance with EN 60079-0 and in compliance with...

The use of electrical equipment in potentially explosive atmospheres requires special attention, namely from the point of view of their construction and maintenance. Together with the technological developments, these objectives can easily be met, objectives which are defined by European standards concerning the construction, use and maintenance of explosive proof equipment. Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosi...

In the paperwork are presented aspects regarding uncertainty involved in the process of spark ignition assessment for intrinsically safe equipment. In the first part of the paper was presented the explosion risk. In the field of power generation and also, in a lot of other fields of industrial activities, the occurrence of flammable substances is a common fact. As a consequence, an explosion risk can occur. On the other hand, the installations placed in areas endangered by presence of flammable substances should b...

The paper aims to address the importance of inspection and maintenance of electrical equipment used in liquefied petroleum gas car filling stations. In order to maintain in operation the electrical equipment in environments with potentially explosive atmospheres under harsh conditions, the personnel involved in inspection and maintenance activities must be trained in such a way as to know the operation of these electrical equipment with different types of protection and how to perform their maintenance. Inspection...

The evaluation of explosion-proof electrical equipment for certification is particularly important given the risk of explosion and must be minimized. This in order to ensure the safety of life, health of workers, to prevent damage to goods and the environment when they meet the essential security requirements at European level. Directive 2014/34 / EU states that equipment used in explosive atmospheres must be designed to operate without endangering the environment for which it is intended. This paper deals with th...

Most of the equipment operating in potentially explosive atmospheres in oil and gas industry is represented by electric motors, which in most situations act on various other elements (e.g. pumps, valves, fans etc.). Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement...

Equipment designed for use in potentially explosive atmospheres must meet the requirements of ATEX Directive 2014/34/EU (be designed so as to avoid the ignition of the surrounding explosive atmosphere in which are intended to operate). In order to meet the requirements of the ATEX Directive 2014/34/EU, electrical equipment is usually associated to one (or more) type (s) of protection, according the EN 60079 series of standards. In case of electrical equipment that produce arcs or sparks in normal operation, the us...

In case of using equipment in areas classified as with hazard of potentially explosive atmospheres, this shall be designed so as to avoid the ignition of the surrounding explosive atmosphere in which it is intended to operate. Equipment designed for use in potentially explosive atmospheres have to be assessed according the provisions of the ATEX Directive 2014/34/EU regarding the ensuring of explosion protection characteristics. In case of electrical equipment this assessment usually uses the provisions of some sp...

In installations in which flammable substances are processed, transferred or stored, explosive atmospheres generated by flammable gasses, vapors and mists or combustible dusts can occur. The assessment of these installations and equipment within is very important in order to verify the implementation of measures that lead to minimizing the risk of ignition of explosive atmospheres and occurrence of an explosion. In Romania, technical installations that operate in environments with hazard of explosive atmospheres m...

Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement of goods when they meet the essential safety requirements at European level. The purpose of this paper is to present the tests carried out on the cable entries with type of protection increased safety and flameproof...