Ventilation - Coal(SMC-UR)

QUALIFICATION

INSTRUCTIONS

• NAME- Name in the registration form should be same as in the SSC/MATRICULATION/10th CLASS CERTIFICATE.
• GENDER- Mark the appropriate gender as per your category.
• DATE OF BIRTH- Select the Date of Birth as per the government documents.
• ADDRESS- Write the correct and complete postal mailing address with appropriate PINCODE.
• E-MAIL and MOBILE NO.- Write the correct and active e-mail id and mobile no. During registration, OTP will be sent on you registered e-mail and mobile number.
• PHOTO and SIGNATURE UPLOAD- Make sure you read the instructions properly and follow the correct size and format to update the photos and signature.
• ACKNOWLEDGEMENT- Remember to save the pdf copy of acknowledgement for future purpose.
• DOCUMENTS- Aspirants are advised to keep the scanned copy of photograph (size: 200kb) and signature (size: 200kb) before starting the registration process.
• PAYMENT- Make sure to read instructions properly before making the payment.

SYLLABUS

Mine Ventilation

Composition of Mine Atmosphere: - Mine gases - generation, properties and effects; sampling and analysis of mine air; occurrence, properties, characteristics, detection and measurement of firedamp; methane drainage; Methanometers and multi-gas detectors; gas chromatograph; methane layering; monitoring of different gases; tele monitoring; coal bed methane / coal mine methane.

Flame Safety Lamps and their Design: - Use of maintenance; testing of safety lamps; lamp house and organization.

Heat and Humidity: - Sources of heat in mines; geothermal gradient; effects of heat and humidity; heat transfer in bord and pillar and longwall workings; methods of calculation of heat flow and temperature rise; heat load due to various machines; air cooling and conditioning.

Air Flow in Mines: - Laws of air flow; resistance of airways; resistance and splitting problems; equivalent orifice; flow control devices; permissible air velocities.

Natural Ventilation: - Seasonal variations; calculation of natural ventilation pressure.

Mechanical Ventilation: - Mechanical ventilators; characteristics and selection, testing and output control; fans in series and parallel; reversal of air flow; fan drift, diffuser and evasee; booster and auxiliary fans; standards of ventilation; ventilation calculation.

48 THE GAZETTE OF INDIA: EXTRAORDINARY [PART II—SEC. 3(i)]

Ventilation Planning: - Ventilation layout; determination of size of shafts and airways; estimation of air quantity requirements; ventilation network analysis; thermodynamic network analysis and computer application; estimation of pressure requirement; ventilation survey; recent development in mine ventilation, ventilation plans.

Airborne Dust: - Generation, dispersion, measurement and control; suppression and treatment of coal dust; properties of stone dust; sampling and analysis of coal dust.

Mine Fires: - Cause of mine fires, spontaneous combustion, mechanism and susceptibility indices (crossing and ignition point temperature); wet oxidation potential; factors affecting spontaneous combustion; detection and prevention; dealing with mine fires; sealing off fire-areas; build-up of extinctive atmosphere; pressure balancing; firefighting organization; gas ratios and their limitations; modified gas ratios; reopening of sealed off fire areas; fires in quarries over developed pillars; coal stack and waste dump fires.

Mine Explosions: - In flammability of fire damp and coal dust; fire damp and coal dust explosions; cause and prevention; stone dust barrier; water barrier and other methods. Explosion in quarries over developed pillars, Water gas explosion.

Inundation: - Causes and prevention; precautions and techniques of approaching old water logged working; safety boring apparatus; pattern of hole; design and construction of water dams; water lodgements; monsoon preparations, water danger plan.

Rescue and Recovery: - Rescue and recovery in mines - rescue apparatus; organization of rescue work; investigation, emergency preparedness and response system; emergency organization; recovery of mine after explosion, fires and inundation.

Illumination: - Cap lamps, layout and organization of lamp rooms; standards of illumination; photometry and illumination survey.