Can oxygen be supplied using forced ventilation?

If the container is sealed, forced ventilation is required.

It depends on what the space was originally used for and what materials are stored or used there. The area needs to be processed first, and samples taken to check that the concentrations of toxic or flammable gases are within acceptable limits before forced ventilation can be implemented:lol

Typically, after processes such as steaming and purging, general containers are free of any remaining toxic or harmful substances as well as flammable and explosive materials. All equipment connections are isolated by installing blind flanges or being disconnected; only after safety personnel have inspected and confirmed that everything is in order can a permit for working in confined spaces be issued to allow work to proceed. The task must be carried out by at least two people, with a dedicated person to supervise. Where conditions permit, forced ventilation can be used. In some cases, it is not possible to clean the interior of the container completely, and introducing air directly can be dangerous (as residual hydrocarbons may mix with the air to form explosive gases). In such situations, nitrogen purging of the equipment can be used, along with workers entering the area equipped with long hoses. It should be noted, however, that this method is highly dangerous and requires close supervision. Both the workers and the supervisors must be aware of the risks involved and possess a strong sense of responsibility. This post was last edited by limingshuguang on 2007-12-17 14:58.]

Forced ventilation is allowed, but oxygen supply is not permitted

Air should be introduced instead of oxygen; on one hand, this prevents suffocation, and on the other hand, it can help lower the temperature if the temperature inside the equipment is high. Nevertheless, when personnel enter the equipment, there must be a dedicated supervisor to take preventive measures and avoid accidents.

Forced oxygen supply is not allowed. When the oxygen concentration in an environment exceeds a certain level, the following hazards can occur: 1. An increase in oxygen concentration can cause substances that do not burn under normal temperature and pressure to ignite when exposed to a flame, thereby posing a risk. For example, clothing worn by people may catch fire in an environment with high oxygen levels, leading to harm. Safety requirements state that in confined spaces, the oxygen content should be between 18% and 25%. 2. Oxygen poisoning. When the oxygen concentration in an environment exceeds a certain level, people exposed to it for a short period of time may suffer from oxygen poisoning, which endangers their health. This post was last edited by limingshuguang on 2007-12-18 08:34

Answer from Floor 9: Forced oxygen supply is not allowed. When the oxygen concentration in an environment exceeds a certain level, the following hazards can occur: 1. An increased oxygen concentration can cause substances that do not burn under normal temperature and pressure to ignite when exposed to a flame, thus posing a risk. For example, clothing worn by people may catch fire in an environment with high oxygen levels, leading to harm. Safety requirements state that in confined spaces, the oxygen content should be between 18% and 25%. 2. Oxygen poisoning. When the oxygen concentration in an environment is too high, people exposed to it for a short period of time can suffer from oxygen poisoning, which endangers their safety. In my opinion, it’s not that oxygen supply is completely prohibited; the key lies in the method used to supply oxygen and ensure proper ventilation. The ventilation method, as well as the selection of vents and exhaust openings, wind speed, and ventilation time, are all particularly critical factors. Furthermore, as mentioned above, in enclosed areas containing toxic and harmful substances, using gas-tight equipment is the safest option (explosion protection is also important). I just can’t understand why one has to enter a sealed, toxic container Can pure mechanization not achieve the desired result? Last edited by hosiao on 2007-12-20 16:52]

When workers enter equipment containers to carry out work, forced ventilation can be used to prevent suffocation. Forcing the introduction of oxygen must never be done. Oxygen-enriched combustion must be strictly prevented. :o

When working inside a container, forced ventilation can be used, as well as air respirators [for short periods of time] or long-circuit air respirators

The regulations specify that in certain environments, ventilation must be ensured; here, \"ventilation\" refers to the flow of \"air\", and the direct introduction of oxygen is prohibited. The reason is that 1. the oxygen requirement for humans is 19.5%~23.5% ； 2. In an environment with direct oxygen supply, the explosion range of flammable and explosive substances widens, making accidents very likely to occur.

Under no circumstances should oxygen be introduced; there have been accidents where a few sparks appeared inside, which caused a fire and led to severe burns for the people involved! Only air circulation is allowed!

I agree with the original poster’s view: oxygen must not be introduced under any circumstances. If welding or similar operations are to be carried out inside, a fire hazard analysis must be conducted, regular monitoring must take place, and someone must be present to oversee the operation and ensure fire safety measures are in place. The equipment must also be isolated, with blind flanges installed at the connections to the pipes.

This post was last edited by zfy_80522 on 2009-6-11 at 16:24. Ventilation using fans is required; work can only proceed after the oxygen level is found to be within acceptable limits and the necessary permit for entering the tank is obtained.

Forced ventilation can be used, you know

No, forcing oxygen in can lead to an oxygen-rich environment; welding or oil contamination may cause explosions or fires.

Oxygen cannot be introduced; forced ventilation is possible. The fire emergency rescue center has a wind generator that can create winds of force 12