Purging is to introduce an inert or non combustible purge gas (nitrogen) into a closed system ( container or precess vasel? To prevent fire o explosión. Purge into service  e.g. a container or process vessel  initially containing air, which shall be prepared for safe introduction of a flammable gas, for instance as part of a start-up procedure. The system can be flushed with an inert gas to reduce the concentration of oxygen so that when the flammable gas is admitted, an ignitable mixture cannot form.  Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems.  this is known as purge-into-service .  Purge out of service Assume a closed system containing a flammable gas, which shall be prepared for safe ingress of air, for instance as part of a shut-down procedure. The system can be flushed with an inert gas to reduce the concentration of the flammable gas so that when air is introduced, an ignitable mixture cannot form. In NFPA 56NFPA 56. Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems. National Fire Protection Association this is known as purge-out-of-service.
In fire and explosion prevention engineering, purging refers to the introduction of an inert (i.e. non-combustible) purge gas into a closed system ( e.g. a container or a process vessel) to prevent the formation of an ignitable atmosphere. Purging relies on the principle that a combustible (or flammable) gas is able to undergo combustion (explode) only if mixed with air in the right proportions. The flammability limits of the gas define those proportions, i.e. the ignitable range. Purge into service Assume a closed system ( e.g. a container or process vessel ), initially containing air, which shall be prepared for safe introduction of a flammable gas, for instance as part of a start-up procedure. The system can be flushed with an inert gas to reduce the concentration of oxygen so that when the flammable gas is admitted, an ignitable mixture cannot form. In NFPA 56 NFPA 56. Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems. National Fire Protection Association this is known as purge-into-service . In combustion engineering terms, the admission of inert gas dilutes the oxygen below the limiting oxygen concentration. Purge out of service Assume a closed system containing a flammable gas, which shall be prepared for safe ingress of air, for instance as part of a shut-down procedure. The system can be flushed with an inert gas to reduce the concentration of the flammable gas so that when air is introduced, an ignitable mixture cannot form. In NFPA 56 this is known as purge-out-of-service.
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Purging is to introduce an inert or non combustible purge gas (nitrogen)
In fire and explosion prevention engineering, purging refers to the introduction of an inert (i.e. non-combustible) purge gas
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container or precess vasel? To prevent fire o explosión.
e.g. a container or a process vessel) to prevent the formation of an ignitable atmosphere. Purging relies on the principle that a combustible (or flammable) gas is able to undergo combustion (explode) only if mixed with air in the right proportions. The flammability limits of the gas define those proportions, i.e. the ignitable range.
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Assume a closed system (
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),
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In NFPA 56 NFPA 56.
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National Fire Protection Association
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In combustion engineering terms, the admission of inert gas dilutes the oxygen below the limiting oxygen concentration.
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56NFPA 56. Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems. National Fire Protection Association
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