Mine Gases - Usmra.com

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Toxic <strong>Gases</strong> (Explosive) con’t.• Hydrogen Sulfide– Chemical Formula: H 2 S– Specific Gravity: 1.191– Ignition Temperature: 700 o F– TLV: 10 ppm– STEL: 15 PPM– Source: Sulfur dissolving in water in a poorlyventilated area, rotting mine timbers– Characteristics: Colorless, sweet taste, rottenegg smell– Effect on the body: Paralysis of respiratorysystem
Toxic <strong>Gases</strong> (Non-Explosive)• Nitrogen Dioxide– Chemical Formula: NO 2– Specific Gravity: 1.589– TLV: 5 PPM– STEL: 10 PPM– Source: Explosives after-product, diesel exhaust, welding– Characteristics: Burnt powder odor, reddish brown in highconcentrations– Effect on the body: Forms nitric acid in lungs causingpulmonary edema
Page 1 and 2: Mine RescueGasDetectionPa. Bureau o
Page 3 and 4: Category of Gases• Noxious - Asph
Page 5 and 6: Exposure Limits• Threshold Limit
Page 7 and 8: Mine Gases & their ComponentsAIR•
Page 9 and 10: Oxygen Present % Effect• 21% Brea
Page 11 and 12: Acetylene- Chemical Formula: C 2 H
Page 13 and 14: Noxious Gases(Non Explosive)• Nit
Page 15: Toxic Gases(Explosive)• Carbon Mo
Page 19 and 20: Smoke• Tiny particles of solid an
Page 21: Detection Devices• Hand held dete

Mine Gases - Usmra.com

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