7Estimated Quantum of Excavation (2019-20) Sl. No.Details(Target)(Projections)1Total Coal Production (MT)1312502UG Coal Production (MT)17223OC Coal Production (MT)1142284OBR (MM3)1647205Composite Excavation (OC Coal + OB) (MM3)234860
8EST. ADDL. LAND REQUIRED FOR MAJOR PROJECTS (NEXT 5 YRS) SLNO.NAME OFPROJECTSTenancyGovt.ForestTotal1Gevra OC Expn.38.7902Dipka OC Expn.24.4113Kusmunda OC Expn.4.0714Pelma5Rai6Chhal95.54324.5907Durgapur8Madannagar9Rampur-Batura12.87410Jampali69.21311Chira Group, Syang GroupPR under preparationSub total12Total Land Requirement1050022001150024200
9Under Ground Capacity Expansion UG Coal Production ( ) : MTExpected Coal Production in : MTBy Intermediate technology (SDL+LHD) MTBy Mass Production Technology (MPT) MT(Continuous Miner (CM)- 4 sets)Highwall (HW)- 1 set MTUG Production level planned in : MTBy Intermediate technology (SDL+LHD) MTBy Mass Production Technology (MPT) MT(Continuous Miner – 13 sets)Highwall (HW)- 4 sets MTThe UG coal production enhancement will include additional contribution from 9 sets of CM and 3 sets of HW.
10MAJOR CONTRIBUTING UG PROJECTS IN INCREMENTAL PRODUCTION (MT)
11UG mines in SECL - Next 5 years perspective Modest growth is envisaged from UG mines.LHDs & UDMs will find their place for replenishment & additional requirement.SDLs will be gradually phased out.More number of Man-riding systems to be introduced in large mines.Extended use of multi utility vehicle for transport of materials, existing labour oriented haulages to be phased out.
12UG Safety Equipment - Way forward Safety items/equipment likely to witness wider application :Strata control equipmentLight weight cap lampsLight weight self-rescuers.Refuge chambers.Gas chromatographs.Instrumentation for detecting hidden strata disturbancesMechanized drilling.Fast constructing ventilation stoppings.Innovations in belt technology for UG mines.
13Open Cast Capacity Expansion – Next 5 years PRIORITY - I:Sanction of Expn. PRs for Gevra OC (40-70 MTY) & Kusmunda OC (15-50 MTY) Major share of OBR is planned to come from high capacity HEMMs (40-55) Cum shovels, T Dumpers, mm Drills, HP Dozers etc.).(i) Huge handling of OBR.(ii) Huge requirement of land.(iii) Slope stability management as mines progress to greater depths.PRIORITY - II:Development of Mand-Raigarh Coalfield: Planning of high capacity mines with high stripping ratio and greater depth.PRIORITY - III:Many of the new projects are being planned envisaging OB removal and Coal production by Departmental Equipment as well as through outsourcing.Application and deployment of Surface Miners is likely to spread to yield sized coal and facilitate selective mining, if required.Wide scale use of In-pit and Surface Belt conveyors.
14Technological up-gradation planned in OC mines Deployment of high capacity HEMM at mega OC minesTransportation of coal by Belt (In-pit / Surface)Introduction of Slope Stability Radar3D Laser Scanner for mine surveyingHigh angle Belt conveyor for deeper & steep mines.Skip Hoist system for deeper mines.Introduction of 3D simulation for Mine planning with real time traffic simulationIntroduction of advanced technology in blasting :Fragmentation analysis & continuous monitoringUse of Electronic Detonator and Gas BagsUse of Laser Profilers for face mapping and blast design
15Future Challenges Counter Measures Increasing environmental awareness & sensitivity.Heavy blasting in the vicinity of human settlements.Management of large traffic inside the mine.Disposal of hazardous waste.Counter MeasuresUse of In-pit crushing/ conveying of coal through Belt.Transportation of coal in form of slurry to pit head/ neighboring consumers.Introduction of modern conveying equipment i.e. High angle / Flexible / Piped conveyor, Skip Hoist System etc.OB conveying through Belt after crushing.
16Requirement of High Capacity HEMM and related Infrastructure
17Existing High Capacity HEMM in Mega Projects of SECL DescriptionGevra(35 MTY)Dipka(25 MTY)42 CuM Electric Rope Shovel03 Nos.02 Nos.240 T Rear Dump Truck16 Nos.06 Nos.850 HP Dozer08 Nos.05 Nos.500 HP Motor Grader04 Nos.381 MM Drill10 CuM Front End Loader01 No.
18HEMM to be inducted as per already approved PRs DescriptionGevra(35 MTY)byDipka(25 MTY)Kusmunda(15-50 MTY) by42 CuM Electric Rope Shovel02 Nos.05 Nos.240 T Rear Dump Truck24 Nos.08 Nos.52 Nos.850 HP Dozer10 Nos.06 Nos.09 Nos.500 HP Motor Grader-381 MM Drill10 CuM Front End Loader20 Nos.Surface Miner05-10 Nos.
19PROBLEMS IN PROCUREMENT OF HEMM Limited sources available globally for high capacity HEMM.PSU are constrained through systemic guidelines – When choice of technology / optimizing equipment is concerned.It is difficult to formulate suitable specification to ensure quality equipment / technology.Absence of indigenous capability / manufacturing base.
20ON-LINE EQUIPMENT HEALTH & MAINTENANCE MONITORING SYSTEM On-line pay load monitoring (PLM) for high capacity equipment is in vogue in mega projects of SECL.High capacity HEMM are being monitored continuously by downloading of data through ECM relating to their health and operational parameters.To enhance the productivity of the high capacity HEMM it is planned to incorporate on-line health monitoring system such as :Daily Engine & Transmission health parameters with alarm system for abnormities such as Oil pressure, temperature, payload, air filter clogging, Oil level warning etc..Health parameter of Motor & Generator such as winding & bearing temperature monitoring & warning and control circuit parameters with warning.Auto generation of maintenance schedule based on the actual health of sub- assembly.Exploring the possibility to interface ECM with OITDS.
21Technology Absorption in Maintenance & Operation Existing: High capacity HEMM (Shovels, Dumpers & Dozers) have been procured with MARC of 12/17 years to absorb the state-of-art technology.Future outlook : All high capacity HEMM will be procured without MARC. Faster absorption of technology would be possible if the equipment are maintained in-house with necessary support of OEM.Anticipated Training Requirements:Operators are to be trained by manufactures at site and on simulators.Maintenance personnel are to be trained at manufacture’s works and at site.Existing departmental training center will be upgraded as per the technology of latest equipment.Condition Based Monitoring : Facilities such as Wear debris analysis with spectroscopy, vibration analysis are planned to be upgraded.
22INFRASTRUCTURE SET-UP FOR EQUIPMENT REPAIR / MAINTENANCE & REBUILDING OF MAJOR SUB-ASSEMBLIES Presently Central Workshops are equipped with facilities matching up to 120T Dumpers & 10 Cum Shovels.To meet the anticipated requirement, infrastructure is being upgraded in workshops of all the mega projects incorporating facilities like :High capacity bay lubrication systems,Washing plants,Diesel Bowsers,Mobile workshop equipped with latest facilities &Tyre mounting and dismounting equipmentCentral Workshops are being equipped with appropriate capacity/ technology for higher capacity Shovels & Dumpers.
23INVENTORY & SPARES MANAGEMENT MARC : Presently spares management for high capacity HEMMs are being done under MARC. To ensure the guaranteed availability, the MARC holder generally keeps the floats of major assemblies as per their assessment.Forecasting of spares requirement being difficult, the inventory cost is unpredictable, hence float management appears to be the only logical solution.The down time cost being comparatively high, a methodology for speedy procurement needs to be adopted for smooth running of HEMM.Consignment store concept : Spares and floats of the HEMM to be maintained by manufacturer at our premises or nearby location which can be obtained after requisition by project, duly vetted.Networking of Mega projects having high capacity HEMM for various details viz., availability of spares, consumption pattern etc. along with company HQ for clubbing the requirement, disbursement of spares and for monitoring at HQ level.
24INVENTORY & SPARES MANAGEMENT Present Practice:Inventory for fast moving spares based on its annual off-take.Quarterly procurement of consumables.Minimum floats of sub-assemblies are being maintained.Procurement of spares due to breakdowns.Challenges for high capacity Equipment not under MARC:Absence of consumption pattern.Sourcing constraint - only source being the OEM.High Prices - Difficulty in price justification.High/Non-moving inventory due to above.Long lead time / Currency fluctuation for imported equipment.
25Long Term Perspective-I INVENTORY & SPARES MANAGEMENTLong Term Perspective-ISearch of reliable alternatives.Care during procurement to negotiate long term supply of spares.Preparation of drawings/specifications through reverse engineering to develop local sources.Value engineering to develop alternate cheaper and better substitute.Long Term Perspective-IIPooling arrangement for high value-Insurance spares with similar manufacturing unit.RC with OEM/Alternate sources for reduction of lead time and other benefits.Structured periodical interaction between engineering and material function for course corrections to obtain targeted results.Support for calculated risk taking.
26Extending IT applications Effective communication, efficiency and safety can be achieved in an OC mine by installation of following systems :Already working :OITDS – (In Mega OC Projects)Video surveillance (at some locations)Planned for deploymentWireless video for industrial securityProximity detection system.Vehicle health monitoring system.Collision warning systems.GPS based vehicle tracking system, Boom Barrier, Weighbridge centering and integration to monitor coal transport and avoid pilferage:Trial run being done in 6 Operational Areas.To be inducted in all Operational Areas.
29Challenges in Coal Handling & Evacuation Substantial infrastructure upgrade is to be done i.e., CHPs, Silos, Roads, Cross -Country conveyor belts etc.System of electric loco passing under silos.Requisite arrangement of internal transportation of coal is to be established.Existing system (predominantly by road) may not be appropriate to handle such large quantity of coal.Timely completion of East & East-West Rail Corridors are crucial for coal evacuation from Korba & Raigarh coalfields of SECL.Requirement of massive Railway capacity augmentation.
30COAL HANDLING FACILITIES (CHP / SILO) (A) WORKS IN PROGRESSSL No.Name of WorkRemark(1)2 Nos. Silo 4000 MT at Gevra AreaLikely commissioning during(2)In Pit Conveyor System Area at Gevra Area(B) CONSTRUCTION WORK TO COMMENCE SHORTLYSL No.Name of WorkRemark(1)20000 Over Head Bunker with CHP (Phase-I) at Kusmunda OCP (15-50 MTY).Likely to start in(C) ENGINEERING PLAN UNDER PREPARATIONSL No.Name of Work(1)Main CHP with 4 Nos. Silos of 4000 MT capacity at Kusmunda OCP (15-50 MTY)(2)Over Head Bunker of MT with 2 Nos. Silo of 4000 MT capacity at Pelma OCP (15 MTY) of Raigarh Area.(3)Over Head Bunker of MT with 1 No. Silo of 4000 MT capacity at Chhal OCP (6 MTY) of Raigarh Area.
31New Technologies likely to find future application: New Technologies recently introduced for coal handling and evacuation system from OC mines:Modification of Silo loading systemSilos with double discharge chutesProvision of passing electric locos under the silosControlled Start Transmission (CST) Drive.Plough Feeders for reclamation of coal from bunkers.Shifting Belt conveyors.New Technologies likely to find future application:High Angle / Sandwich / Pipe ConveyorsCurved conveyor (Vertical & Horizontal)Skip Hoist systemDual Truck Mobile Sizer (DTMS)
32Wagon RequirementSince majority of coal evacuation is has been planned through Rail mode, the year-wise rake requirement per day will be as following:Sl. No.YearRake requirement1382403464535756109Increase in Rail traffic and requirement of wagons needs to be addressed.