Mines Rescue and Safety | |
- What is the purpose of rescue and recovery?
- What is the minimum and maximum number of a rescue team members?
- What are the responsibilities of a rescue captain?
- How many kinds of rescue apparatus are there?
- What are the four names of breathing apparatus? What is their weight and duration?
- What is the total number of valves of breathing apparatus BG-174?
- What is the total number of valves of breathing apparatus BG-04?
- What is the volume of breathing apparatus BG-04’s breathing bag?
- What is the pressure and volume of oxygen cylinder of breathing apparatus BG-04?
- What is the name of the chemical that is used in CO2 absorber?
- What is the formula and weight of alkali cartridge and soda lime?
- What is the minimum and maximum quantity of oxygen that is delivered from BG-04?
- What is the weight, duration and names of parts of a self rescuer?
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Safety Lamps- What is function of oil flame safety lamp?
- Describe the parts of an oil flame safety lamp.
- What is the purpose of grates of oil flame safety lamp?
- Which fuel is used in oil flame safety lamp?
- What are the names of parts of multi-gas detector lamp box?
- How the pump of multi-gas detector is checked?
- How is the gas from detector tubes checked?
- Describe the volume and pressure of cylinder installed in pulmotor.
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Mine Gases- Describe the names of gases found inside a mine.
- What are the gases found inside a mine are called in mining terminology?
- Describe the names of poisonous and suffocating gases.
- What is the importance of Nitrogen in the mine atmosphere?
- What is the importance of Oxygen (O2) in the mine atmosphere?
- How does the deficiency of Oxygen affect the health of mine workers?
- How does the methane (CH4) affect the life of mine workers?
- How does the carbon monoxides (CO) affect the human life?
- How does the carbon dioxide (CO2) affect the human life?
- What affects of increased CO2 are produced on a human being?
- What effects are produced on a human being if quantity of CO2 is decreased?
- What is the method of checking CO2?
- How does the Hydrogen Sulphide (H2S) affect the human life?
- How does the Nitrogen Dioxide (NO2) affect the human life?
- How does the Sulphur Dioxide (SO2) affect the human being?
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Mine Ventilation- What are the purposes of Mine Ventilation?
- What are the types of Mine Ventilation?
- Describe the methods of mechanical ventilation.
- Why the regulators are installed to correct the air flow system?
- Why air-crossing is done?
- What is meant by low-level and high-level?
- Describe the method of ascertaining the quantity of air.
- How the area of a mine is determined?
- What is meant by natural ventilation?
- Why the doors are installed inside a mine?
- What is meant by FAB?
- What are causes of fire eruption inside a mine?
- How doses coal dust affect the health of mine workers?
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Mine Sample Testing Laboratory- What is the purpose of Mines Sample Testing Laboratory, Khushab?
- What kinds of health hazards are detected and evaluated in the coal mines?
- How does the poor illumination affect the health of mine workers?
- How does high level of noise affect the human activity?
- What parameters are noted for safe drinking water?
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What is the purpose of rescue and recovery? | Top |
- To find out and rescue the miners trapped inside a mine
- To determine the cause of a fire eruption and try to extinguish it
- To make a mine operational again and to correct the ventilation
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What is the minimum and maximum number of a rescue team members? | Top |
The minimum number of team members of a rescue team is 3 and maximum number is 5. |
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What are the responsibilities of a rescue captain? | Top |
- To inform the higher authorities immediately after getting information of an emergency
- To direct the rescue team to load the emergency apparatus
- To guide the rescue team inside the mine
- To check the roof of mine and reduction of oxygen
- To establish a ventilation base
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How many kinds of rescue apparatus are there? | Top |
There are two kinds of rescue apparatus, (1) close circuit and (2) open circuit apparatus. |
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What are the four names of breathing apparatus? What is their weight and duration? | Top |
1. | BG-174 | Weight 15 kg | Time 4 hours | 2. | BG-04 | Weight 14 kg | Time 4 hours | 3. | Self-Rescuer | Weight 980 kg | Time 30 minutes | 4. | Fresh Air Line | Length 25-30 Ft | No time bounding. |
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What is the total number of valves of breathing apparatus BG-174? | Top |
The total number of valves of breathing apparatus BG-174 is 7. |
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What is the total number of valves of breathing apparatus BG-04? | Top |
The total number of valves of breathing apparatus BG-04 is 7. |
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What is the volume of breathing apparatus BG-04’s breathing bag? | Top |
The volume of the breathing bag is 5.5 liters. |
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What is the pressure and volume of oxygen cylinder of breathing apparatus BG-04? | Top |
The volume of the cylinder is 2 litres and pressure is 200 bar. |
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What is the name of the chemical that is used in CO2 absorber? | Top |
The name of chemical used in CO2 absorber is potassium hydroxide + sodium hydroxide. |
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What is the formula and weight of alkali cartridge and soda lime? | Top |
Formula of Alkali Cartridge is NAOH 50% + KOH 50% Formula of Soda Lime is NAOH 42.50% + CAOH 42.50% + MOISTURE 15% Weight is 2.9 kg - 2.8 kg |
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What is the minimum and maximum quantity of oxygen that is delivered from BG-04? | Top |
Oxygen 1.5 to 1.9 litter per minutes. |
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What is the weight, duration and names of parts of a self-rescuer? | Top |
Weight of self-rescuer is 980 kg and time is 30 minutes. Parts are 1. Dust Filter, 2. Drying Agent, 3. Hopecl*te |
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What is function of oil flame safety lamp? | Top |
It detects the methane and deficiency of Oxygen in mine atmosphere. |
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Describe the parts of an oil flame safety lamp. | Top |
1. Found Assembly, 2. Globe Assembly, 3. Bonut Assembly |
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What is the purpose of grates of oil flame safety lamp? | Top |
To absorb heat and to stop a flame. |
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Which fuel is used in oil flame safety lamp? | Top |
Kilsa oil ( 1 part coconut oil and 3 parts kerosene oil). |
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What are the names of parts of multi-gas detector lamp box? | Top |
1. Detector Pump, 2. Detector Tube |
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How the pump of multi-gas detector is checked? | Top |
Closed tube is attached and pump is pressed. |
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How is the gas from detector tubes checked? | Top |
Both heads of a tube are turned off, attached to pump and pressed. |
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Describe the volume and pressure of cylinder installed in pulmotor. | Top |
The volume of the cylinder attached to Pull Motor is 2.5 litres and pressure 200 bar. |
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Describe the names of gases found inside a mine. | Top |
Carbon monoxide (CO), Carbon dioxide (CO2), Oxygen (O2), Nitrogen (N2), Nitrous oxide (N2O), Methane (CH4), Hydrogen Sulphide (H2S), Sulphur Dioxide (SO2). |
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What are the gases found inside a mine are called in mining terminology? | Top |
CO is called white damp, CO2 is called black damp, CH4 is called fire damp, N2O is called laughter damp and H2S is called sting damp. |
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What kinds of gases are found in coal mines & salt mines? | Top |
There are two kinds of gases found in coal mines & salt mines: 1. Wanted Gases, 2. Unwanted Gases. |
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Which gases are wanted in coal & salt mines? | Top |
Oxygen & Nitrogen are wanted gases. |
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Which gases are unwanted or fatal in coal & salt mines? | Top |
Methane, Carbon Monoxide, Carbon Dioxide, Nitrogen Dioxide, Hydrogen Sulphide and Sulphur Dioxide are unwanted or fatal gases. |
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Describe the names of poisonous and suffocating gases. | Top |
suffocating gas (CO2) and poisonous gas (CO) |
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What is the importance of Nitrogen in the mine atmosphere? | Top |
Nitrogen is an inert gas, controls the combustion process and its permissible limit is 78.11% in mines. |
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What is the importance of Oxygen (O2) in the mine atmosphere? | Top |
Oxygen is essential for life and combustion process. Its permissible limit is not less than 19.5% in mines. |
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How does the deficiency of Oxygen affect the health of mine workers? | Top |
If the concentration of oxygen decreases from the permissible limit, the rate of breathing starts increasing and acute deficiency results in death of mine workers. |
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How does the methane (CH4) affect the life of mine workers? | Top |
It is not poisonous but a flammable gas. Its explosive range is 5% to 14%. |
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How does the carbon monoxides (CO) affect the human life? | Top |
It is poisonous and affects the central nervous system of human being. Its permissible limit is 0.01%. |
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How does the carbon dioxide (CO2) affect the human life? | Top |
If its concentration in the mine atmosphere increases from its permissible limit (0.5%), the rate of breathing increases. |
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What are the affects of increased CO2 are produced on a human being? | Top |
The breathing rate of a human being increases. |
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What effects are produced on a human being if quantity of CO2 is decreased? | Top |
Breathing rate is increased and the face gets bluish. |
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What is the method of checking CO2? | Top |
With the help of digital monitor and multi gas detector. |
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How does the Hydrogen Sulphide (H2S) affect the human life? | Top |
It is poisonous gas and it also affects the central nervous system of the human being. Its permissible limit is 0.001%. |
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How does the Nitrogen Dioxide (NO2) affect the human life? | Top |
It is a poisonous gas and affects the breathing system. Its permissible limit is 0.0005%. |
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How does the Sulphur Dioxide (SO2) affect the human being? | Top |
It is poisonous gas and affects the breathing system. Its permissible limit is 0.0005%. |
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What are the purposes of Mine Ventilation? | Top |
To maintain the stream of fresh air and deliver fresh air to the working face, exclude the poisonous gases, reduce the temperature and humidity and throw away the air born dust. |
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What are the types of Mine Ventilation? | Top |
Natural ventilation and mechanical ventilation. |
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Describe the methods of mechanical ventilation. | Top |
With the help of forcing fan and exhaust fan. |
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Why the regulators are installed to correct the air flow system? | Top |
Regulators are installed to maintain the quantity of air for the persons working in a mine |
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Why air-crossing is done? | Top |
Air-crossing is done to improve the air-circuit so that the warm air of low level and high l.evel don’t get mixed up |
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What is meant by low-level and high-level? | Top |
The air enters from low-level and exits from high level. |
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Describe the method of ascertaining the quantity of air. | Top |
To find out the quantity of air, the horizontal section of mine area is multiplied with the speed of the air. |
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How the area of a mine is determined? | Top |
(( Floor + Roof ) / 2 ) x Height |
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What is meant by natural ventilation? | Top |
Natural ventilation means the entrance of air from low-level and its exit from high level naturally. |
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Why the doors are installed inside a mine? | Top |
Doors are installed to control the flow of air inside a mine. |
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What is meant by FAB? | Top |
FAB means fresh air base or fresh air channel. |
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What are causes of fire eruption inside a mine? | Top |
Increased quantity of methane, coal dust, coal oxidation and electric short circuit. |
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How doses coal dust affect the health of mine workers? | Top |
The coal dust causes pneumoconiosis. |
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What is the purpose of Mines Sample Testing Laboratory, Khushab? | Top |
To detect and evaluate the health hazards in coal & salt mines, for comfortable working environment, safety, health and welfare of mine workers. |
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What kinds of health hazards are detected and evaluated in the coal mines? | Top |
The health hazards of coal mines are as: - Noxious Gases
- Coal Dust
- Poor Illumination
- Noise
- Humidity & Heat Stress
- Unsafe drinking water
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How does the poor illumination affect the health of mine workers? | Top |
Poor illumination causes Nystagmus. Illumination should be up to 5 Lux. |
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What are the effects of the humidity & heat stress for the human life? | Top |
High concentration of humidity and heat causes dehydration, muscular cramps and heat stroke. |
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How does high level of noise affect the human activity? | Top |
High level of noise disturbs the communication hence result in accidents. It also causes hypertension in the workers. Constant exposure to high level of noise causes deafness. The permissible limit is 80 dB. |
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What parameters are noted for safe drinking water? | Top |
Microscopic studies are performed for the detection of bacterial contamination and pH and hardness is also measured. |
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