What causes gas pipes to explode

How gas explodes in an apartment: causes of explosion and tips for using gas safely

Have you noticed how resonant the news of the residential gas explosion is? And you wondered why this is happening? The answer is simple: not only are residents of gassed buildings at risk, but also those who do not use this type of fuel at all. After the gas exploded in the apartment, everyone wants to know the reason.

People follow tragic stories and replenish knowledge about the causes of the leak, the rules of operation and possible violations. The legislation describes in detail the requirements for gas pipelines, devices and applications. But seldom does anyone examine legislative acts to properly install a furnace or cylinder in order to carry out the installation or transfer of pipes. And specialized services are unable to track all the actions of residents.

In order to get a complete picture of the causes of domestic explosions, their scope and their consequences, we analyzed the statistical incidents. The following article contains a list of sources of danger as well as expert advice on how to remedy defects, even if the dangerous equipment belongs to outsiders.

The content of the article:

The main causes of a gas explosion

To understand why ordinary household gas can explode, it is enough to turn to the gas supply summaries. The "honorable" first place in the prevalence is occupied by the illiterate storage of propane bottles.

For years, old containers have been leaking on mezzanines, in cupboards, and in kitchen niches under the window. A small spark is enough for the accumulated fuel to explode.

A common mistake is a sharp movement of gas containers from cold to hot. Often observed when storing cylinders on the balcony. A change in temperature leads to rapid expansion of the substance, an explosion

In second place are mistakes related to the careless installation of equipment - dropping cylinders or heating with nearby heating devices often leads to detonation.

The third is a malfunction gas pipeLeakage due to installation errors: leaks, hose wear, incorrect connection plates. This also includes unauthorized changes to the project that exclude efficient ventilation and independent connections of additional devices.

The fourth place is the negligence of users allowing liquid injectors to fill plate nozzles. Once at the nozzle, the water extinguishes the fire but does not block the gas outlet. The accumulation of explosives without ventilation quickly reaches critical levels.

Residents of apartment buildings often use a gas stove to heat the room. Some even leave the equipment on for the night. This is not possible because the unattended oven is a source of danger

And the last, fifth place in many years carries the irresponsibility of the owners of old cylinders. After the practical tenants decided to give the tank a new life, they saw and cut open the tank in different ways to suit different needs. This is a mistake.

Even an apparently completely empty bottle always contains residual gas. Hence, any autopsy-directed action is a step towards disaster.

Differences in the methane and propane explosion

Looking at the statistics of household gas explosions, it is easy to see how the frequency of incidents depends on the type of fuel. There are more accidents caused by propane than by using methane.

Professional gas workers explain this by saying that methane is used to fuel the serviced highways. Networks are regularly checked, repaired and updated. Operation of propane equipment, on the other hand, is seldom monitored and has in fact been placed under the responsibility of ordinary users.

Propane-butane mixtures for filling bottles that are heavier than air. If they leak, they will accumulate in the lower part of the room, creating all the conditions for an explosion. Natural gas is lighter than air and more mobile. Therefore, if it leaks, the ventilation system is more likely to deal with gas pollution.

The methane explosion force is almost twice as great. However, propane generates more heat - it is more efficient than fuel. Therefore, the explosion of propane cylinders is accompanied by intense combustion, and the main destructive force of methane is the shock wave.

Explosive methane concentration

The lower value of the explosion concentration of natural gas is 4.4% of the total air mass. Explosive peaks are reached at a concentration of 9.5%. If the air is more than 17% full, methane simply burns, does not threaten an explosion, but can have a toxic effect on humans.

An exact calculation of the concentration of natural gas in the air is possible only with the help of devices - special sensors. However, it is easy to understand that a leak has already occurred when 1 percent of the air mass is filled. When this value is reached, a person can clearly distinguish the specific smell of a substance.

Explosive concentration of propane

There is a chance of organizing an explosion with a propane leak even if 1.7% of the mixture is in the air. The explosiveness is kept at a concentration of up to 10.9%. Propane-butane mixtures, like methane, can damage the nervous system. At the same time, the victims complain of increasing symptoms of intoxication.

One useful thing for evaluating air composition is a gas sensor. Today products are available on the market that signal a gas by means of color and sound indicators. The best option is a sensor that will automatically shut off the fuel in the event of a leak.

Since the household balloon mixes they are odorless, they are supplemented with odorous substances - strong-smelling substances. Such substances have a very pungent odor and, in the event of a leak, quickly attract the attention of owners of gas appliances. Therefore, with due attention, it is not difficult to identify the danger in time.

Preventing the explosion of household gases

Knowing why gas explodes most often in homes can help you make a list of accident prevention measures.

It will contain:

  • Operation of approved devices that are within the expiration date;
  • Connection and installation by professionals with access;
  • competent storage and installation of cylinders;
  • Coordination of all project changes with the gas service;
  • regular inspection of the gas pipeline, connections and equipment by gas workers;
  • Keeping the ventilation system operational;
  • Cooking on a gas stove with the constant presence of adult capable people;
  • The devices are only used for their intended purpose.

In addition, it is important to listen for odors and monitor the tightness of the valves. Cranes flange connections. If you have the slightest suspicion, contact the fuel supplier.

Unfortunately, the reviews of residents of gassed homes include many reports of a formal approach to gas appliance maintenance. To avoid this, you should look at the list of mandatory work and make sure that all the declared activities have been fully carried out.

Since apartment buildings make tenants interdependent, sometimes you don't just need to monitor your own gas devices. If the neighbors break security, you need to write a statement to the gas service.

It must give the exact address, the reason for the complaint, the names of the residents who signed the application, information about the violations and the date of determination. The reason can be the presence of prohibited devices, a violation of the rules of operation and the smell of gas.

Explosion-proof process

An improperly opened or dropped cylinder leaves no choice - the substance detonates immediately. And when a leak is detected, there is almost always time to neutralize the gas. A leak can be detected in four ways: by means of gas analyzers, by soaping joints, with the appearance of a smell and the feeling of cold emanating from the joints.

In all cases it is necessary:

  1. Organize intensive ventilation.
  2. Close the gas valve.
  3. Move people and animals away from the premises, warn the neighbors.
  4. Contact the gas service emergency room.

Better to call rescuers when you go outside. Before the arrival of specialists, it is advisable to monitor the entrance to the house so that no one can get into the gassed apartments.

For quick orientation in emergency situations, you should know the functions for dialing emergency numbers of your mobile network operator in advance. Megaphone, MTS and TELE2 subscribers can call the gas service on 040. With the Beeline services you have to dial 004 while you are being served by Motiva-104

If a leak is detected, it is important to leave the room quickly and without panic. Therefore, if there is difficulty in finding cranes or opening windows, it is better to leave everything as it is and go outside.

When the explosion has already occurred

The algorithm for the explosion is identical. If possible, close the valves and leave the room. When calling, be sure to point out the fact of the explosion and contact doctors, firefighters, and gas workers. You can place a call on a single phone number 112.

According to the observations of rescue workers, panic on the part of the residents becomes a significant obstacle to the coordinated action of the rescue services. Therefore, during rescue operations, it is advisable to calm down and carefully follow the instructions of specialists

In 90 percent of the cases, a gas explosion is accompanied by a fire. Therefore, the actions in such an accident are identical to the rescue from fire.

To do this, you need to:

  1. Squeeze a damp cloth over your face and just breathe deeply.
  2. Determine the route to the exit. If local fires block him, try to neutralize them by throwing a blanket over his stove and thick outerwear.
  3. If there is no way to get through the main entrance, then evaluate the likelihood of leaving the room through the windows.

In some situations, it is wiser to wait for rescuers than to evacuate yourself. Therefore, it is important to properly assess the risks and not panic.

If you leave the apartment after the explosion, you will not be able to use the elevator, the mine will quickly fill with smoke, the equipment will stop working and get stuck between floors

After leaving the house, the rescuers advise moving as far away from the building as possible and staying at a safe distance until all sources of danger have been removed. The residents will be informed of this by the emergency personnel.

Conclusions and useful video on the topic

In the video, the specialist once again lists the main causes of accidents, mentions the need for constant monitoring of the gas line and shows examples of automatic gas analyzers:

Can a propane tank explode? Yes! Can natural gas explode in an apartment? Yes All fuel is a source of danger. Therefore, it is necessary to comply with all the rules and standards for the storage, installation and operation of gas appliances.

If you have any useful information, want to share your experience, or warn other users, write. Below is a form where anyone can ask exciting questions, post a comment, or post a photo. Take part in discussions and express your competent opinion.

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