If a fire or a large range of fierce fire, the withdrawal of the affected areas should be under the premise of staff to ensure their own safety, to take stable air flow, control the fire development, or gas poisoning and preventive measures to prevent coal dust explosions, and keep in the ground and The command of the command, acting according to the command of the command. If the on-site personnel are unable to rescue, and the personal safety may be threatened or a fire occurs in other areas, when the evacuation order is received, self-rescue and organization avoidance shall be carried out immediately. Determining measures to control wind flow is an important method to control the fire and reduce the disaster. The methods of controlling the wind flow are: normal ventilation; reducing air volume; stopping or short-circuiting; Generally, wind or wind reduction cannot be easily adopted. Especially when a fire occurs in a gas mine, the gas concentration in the downhole flow will increase due to wind or wind reduction, which may cause gas explosion. The wind or wind reduction also reduces the wind pressure of the fan fan distributed in the roadway, and is more susceptible to the wind pressure. When a fire occurs in the total incoming airflow (in the air inlet wellhead, in the wellbore, in the bottomhole yard or the total intake duct, etc.), a full-mineral anti-wind should be carried out to prevent the flue gas from entering the production lanes of the well. When a fire occurs in the total return air passage (total return air passage, return air bottom, return air well or return air well), the original wind flow direction must be maintained so that the smoke flow does not invade the well. When a fire occurs in a downhole electromechanical chamber, the fire door should usually be closed quickly or a temporary closed wall should be built to block the wind flow. When the wind flow is reversed due to the effect of the fire and wind pressure, a temporary closed wall should be built on the air inlet side of the fire source. This can quickly reduce the fire, thus reducing the role of fire and wind pressure. carbon steel casting WCB, WCC, WC5, WC6, LCC, LCB, LC3, C12A, stainless steel casting CF8, CF8M, CF3, CF3M, gate valve casting, globe valve casting, swing Check Valve casting, raw casting of gate valve, raw casting of Butterfly Valve, raw casting of globe valve, cast steel casting of gate valve, cast steel raw cating of butterfly valve, China leading foundry for cast steel gate valve, globe valve, swing check valve, ball valve, butterfly valve, and plug valve. Sand mould steel casting, lost wax casting of gate valve, investment casting of ball valve, precision steel casting of gate valve Cast Steel Vs Forged Steel,Cast Iron Vs Forged Steel,Forged Or Cast,Forged Steel Forging Mill Ball Components SUZHOU RSF VALVE CO.,LTD , https://www.rsf-valve.com
How to deal with underground fires
Fires are accidents that may be encountered by downhole workers. After a fire, the site staff must not panic. According to the nature of the fire, the ventilation and gas conditions in the disaster area, all possible methods should be taken immediately to extinguish the fire directly, control the fire, and report to the mine dispatching room quickly. The district, team, and team leader at the site shall, in accordance with the provisions of the mine disaster prevention and treatment plan, all areas that may be threatened by fires (areas where fire gas flows, areas where fire gas is reversed due to fire and wind pressure, and possible explosions) Persons in the area, etc. evacuate the danger zone and organize personnel to use the tools and equipment on site to extinguish the fire. When electrical equipment catches fire, first cut off its power supply. Only use non-conducting fire-fighting equipment to extinguish the fire before the power is cut off.