IG541 Inert Gas Système d'extinction d'incendie Appliquer Subway

Résumé

Underground rail transit is a new mode of transportation that alleviates road traffic pressure.

Dans le travail de la sécurité incendie, there is a definite provision that where need to install a fire suppression system and where need to have fire other fire extinguishing equipment.

Pour le choix du système d'extinction d'incendie, considering the particularity of underground rail transit, and considering environmental protection, sécurité, economy, and fire extinguishing efficiency, we suggest using the HFC-227ea fire extinguishing system or IG541 Inert Gas système d'extinction d'incendie, There is no harm to humans.

Préface

Urban Underground railways are an important factor program of urban construction, ce sont les artères principales de la construction de transport urbain.

The municipal government invests heavily in underground railway construction, and the railway is normally built in the crowded strip of the city, pour atténuer la pression du trafic, aussi encombré de gens donc il y a un certain risque de sécurité après le chemin de fer est construit.

The railway/metro operates underground, so if the railway gets into an accident and causes a fire, then it will seriously harm people.

to avoid fire in the underground railways, en fonction de la fourniture de <Code pour la conception Metro>, dans le système de chemin de fer de la chambre de générateur, la salle des machines, la salle d'informatique, et la zone d'équipement de distribution électrique sont faciles à prendre feu.

As the railway is a particular place-underground place when we measure fire suppression, we can not be able to use a water-based fire extinguishing device because water-based is hard to reach, we should use a smart gas fire suppression system, pour que nous puissions trouver le feu à son stade précoce et éteindre le feu dans le temps, et au minimum la perte.

1. Chemin de fer / station de métro Situation générale

1.1 Métro / Projet Metro Vue d'ensemble

Take Metro 1 à Beijing en tant qu'échantillon, the construction of Metro 1 is normally designed to cross the main road, the setting railway station is normally at the location of the main road or supermarket which continues people’s Voyage et achats. Par exemple, la gare, and the local supermarket shopping mall, so the metro is very important in the under-ground subway construction, the subway plays an important role in underground transportation in urban, and it is convenient for people’s travel every day and night.

Fire Safety in the subway is serious and important.

1.2 Champ d'application de conception

Subway fires not only cause huge damage to railway train equipment but are also harmful to human health. If one day the railway is shut down due to the fire, all train stations will be paralyzed.

2. Principes de conception de Subway Fire Suppression

Subway fire protection design should use an auto fire suppression system and its device, le système doit être automatique, manual control, and mechanical emergency start. En même temps, for the design of the manual control system, we should consider awareness and measurement for the miss-operation manual; the subway should have a different fire supervisor, and every fire zone use a separate noyage total du système d'extinction d'incendie.

3. Choix du Moyen d'extinction (Agent)

As the subway is driven by electric power when a fire occurs the water is not able to be used for fire suppression, only a gas fire suppression system is most suitable for the subway fire solutions, but as the subway is underground and crowded with people, donc pour le choix d'incendie Moyens d'extinction / agent, nous devrions utiliser un rapide rapide, efficace, agent de lutte contre les incendies de gaz de sécurité humaine.

3.1 Gaz système d'extinction automatique d'incendie

There is a definite requirement and provision for a gas automatic fire suppression system when fire extinguishing should ensure the subway’s operation is not affected, ensure the subway equipment will not be damaged, and extinguish the fire at its early stage. So an environmentally friendly fire extinguishing agent is an ideal extinguishing media for it, to extinguish the subway fire without air pollution and any hurt to the human body.

3.2 Choose IG41 fire extinguishing agent as extinguishing media in the subway

Considering the atmosphere environment, le halon 1301 is forbidden to be used as a fire extinguishing agent as it is pollution; co2 extinguishing agent can extinguish fire rapidly, but as the subway station and train carriage are narrow and CO2 will cause harm to human body, si co2 est pas non plus suggéré d'utiliser dans le métro; Considérons donc l'environnement, l'efficacité d'extinction d'incendie et les facteurs de sécurité humaine, système d'extinction d'incendie à gaz pour le métro nous choisissons d'utiliser FM200 système d'extinction d'incendie ou IG541 système d'extinction.

Considering from Environmental Protection Aspect, L'indice de l'ODP, GWP, and ALT are 3 important factors for environmental protection, the fm200 system and Inert Gas Fire Suppression system are both perfect.

IG41 Characteristics

Considering from Travel Safety Aspect, ig541 belongs to inert gas and is made up of nitrogen, argon, and carbon dioxide, their proportion is 52:40, celles-ci 3 gases normally occur in the atmosphere, so ig541 in the composition is taken as naturally clean gas; le ig541 présente les caractéristiques suivantes:

1. ODP = 0.
2. GWP = 0.
3. ALT = 0.
4. Belongs to inert gas and is non-corrosive to electric equipment and facilities.
5. Il est transparent, incolore, inodore.
6. Non conductrice.
7. Not have secondary pollution to the atmosphere and not have bad effects for humans.

So the IG541 is very suitable to use in the subway or metro as the main fire extinguishing system.

Considering from Usage Cost Aspect, the FM200 and IG541 Inert Gas fire suppression systems are the ideal fire extinguishing systems for the current subway system.

The cost system consists of product purchase cost, maintenance cost, and transportation cost. For the FM200 system, the product purchase cost is slightly higher, while for the IG541 system, the maintenance cost and transportation costs are slightly higher.

Ainsi, la comparaison des deux, the cost them is more or less the same.

4. Conclusion

After various considerations and implementation results, the IG541 gas fire suppression system is finally the most ideal fire protection system for the subway we choose.

Considering many factors such as economy, protection environnementale, sécurité, and efficiency, before establishing a better fire extinguishing system, the IG541 fire extinguishing system should be the most reasonable fire extinguishing system applied in railways or subways.

Incolore, inodore, et non corrosif are the most advantages of subway fire project installation, ingénierie, and maintenance.

IG541 gaseous fire extinguishing agent becomes the first choice for the subway.