Anil Kr Rana Rajiw Lochan CMPDI HQ Ranchi Coal Mine Methane Introduction Coal Mine Methane Introduction Coal Mine Methane Introduction List of disasters due to methane explosion in underground mines ID: 810975
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Slide1
Opportunities and Challenges in Coal Mine Methane Management in India : Survey Findings
Anil Kr. Rana
Rajiw Lochan
CMPDI (HQ), Ranchi
Slide2Coal Mine Methane - Introduction
Slide3Coal Mine Methane - Introduction
Slide4Coal Mine Methane - Introduction
Slide5List of disasters due to methane explosion in underground mines
Sl. No.
Name of the coal mine
Date of disaster
1.
Nadirkhan mine
16.02.1908
2.
Dishergarh mine
07.02.19103.Namdang mine26.11.19104.Kendwadih mine09.11.19115.Chowrasi mine22.10.19136.Dishergarh mine20.07.19167.Dishergarh mine18.11.19188.Amlabad mine28.02.19219.Khost mine09.03.192210.Parbelia mine04.01.192311.Bagdigi mine29.06.193512.Kurhurbaree mine24.07.1935
Sl. No.
Name of the coal mine
Date of disaster
13.
Poidih mine
18.12.1936
14.
Begunia mine
19.03.1946
15.
Damra mine
14.03.1954
16.
Amlabad mine
05.02.1955
17.
Chinakuri mine
19.02.1958
18.
Dhori mine
28.05.1965
19.
Jeetpur mine
18.03.1973
20.
Sudamdih mine
04.10.1976
21.
Baragolai mine
22.01.1979
22.
Tipong mine
19.11.1993
23.
Bhatdih
mine
06.09.2006
24.
Anjan Hill mine
06.05.2010
Slide6Explosion in Bhatdih mine
Slide7Explosion in Anjan Hill mine
Slide8CMM - Opportunities
Slide9Special characteristics of Indian coalfields
There are
two
potential coalfields namely
D
amodar
valley
and
Sohagpur for CMMDamodar valley CF is one of the oldest coalfields in India and is extensively worked.Multiple mining horizons (more than 20)Densely populatedAll the above factors are making extraction of CMM a complex proposition
Slide10Special characteristics of Indian coal
Low gas content
Low
permeability (
generally < 1
milli-darcy
)
CMM extraction is required in
Degree
III mines with PSLW technology.In other mines it is to be decided on case to case basis Degree of gassinessNumber of minesDegree I ( Methane < 1m3/ te)136Degree II ( Methane > 1m3/ te ; <10m3/ te)81Degree III ( Methane > 10m3/ te )9Total226
Slide11CMM - Opportunities
Slide12A case for mitigating revenue lossIn
Moonidih
XVI Top PSLW (BCCL), even one day stoppage due to methane, will result in a revenue loss of
Rs
. 87 Lakhs ($130,000) approx.
Similarly, in
Jhanjhra
mine the expected revenue loss will be
Rs
. 1.41 Cr. ($212,000)Keeping the above in view, one EOI has been floated for methane drainage for Moonidih mine, which is a degree III gassy mine.
Slide13CMM - Opportunities
Slide14Technologies for CMM extraction
Slide15Co-development agreement (For CBM and coal)
The purpose of this agreement is to provide for:
Efficient and expeditious processes under which the parties may undertake activities; simultaneously for coal mining and CBM operations;
The rights of each party within the overlap area;
Amicable resolution of matters which are pertinent to exploration and production of CBM and coal mining in the overlap area including safety and rehabilitation
Slide16Co-development agreement (For CBM and coal)
The co-development plan is submitted to
MoC
and
MoP&NG
after due approval of DGMS and DGH
Amendments to the co-exploration and development plan must be exercised only after mutual consent of both parties in writing.
The amendment and modification in approve co-exploration and development plan with suitable modification in safety management plan shall be approved by DGMS, prior to implementation.
Right to extract and sale of CBM in the overlap area lies solely with the CBM Lease Holder. CML Holder for coal mining is entitled to mine coal in the overlap area provided that such coal mining is in accordance with the agreed co-development plan, as amended from time to time.
The CML Holder is entitled to extract CMM from the coal seams in which mining is proposed for safety or for commercial use as deemed fit under relevant rules and regulations for mining safety and with the consent of CBM Lessee/ PEL Holder
Slide17Parbatpur (Central): A case for Co-development Plan
Slide18Parbatpur (Central): A case for Co-development Plan (Contd.)
Parbatpur
(Central) coal block is allotted to m/s ISP-SAIL for coking coal mining.
This block is also a part of
Parbatpur
(Central
) CBM block allotted to JV of ONGC & CIL
Slide19Parbatpur (Central): A case for Co-development Plan (Contd.)
The main issues are as under:
Seam XV and below
allotted
for CBM extraction to M/s ISP-SAIL
Due to difference in seam horizons, the proposed technology of CBM extraction is not suitable for CMM extraction in the upper seams.
The layout of
borewells
for CBM is interfering with the layout for coal extraction
Slide20Thank you
Slide21CBM / CMM Status
Slide22CBM / CMM Status
Slide23CBM Blocks under Development & Production
Sl. No.
State
Block
Contractor
Area (sq. km.)
Present Status
1.
West Bengal
Raniganj (South)GEECL210Production2.JharkhandJhariaONGC & CIL85Development3.West BengalRaniganj (North)ONGC & CIL350Development4.JharkhandBK-CBM-2001/IONGC & IOC95Development5.JharkhandNK-CBM-2001/IONGC & IOC340Development6.West BengalRG(E)-CBM-2001/IEssar Oil Ltd.500Development7.Madhya PradeshSP(E)-CBM-2001/IRIL495Development8.Madhya PradeshSP(W)-CBM-2001/IRIL500Production
Slide24CBM Blocks under Exploration
Sl. No.
State
Block
Contractor
Area (sq. km.)
Present Status
1.
Madhya Pradesh
SP(N)-CBM-2005/IIIREL, RNRL & Geopetrol609Exploration2.JharkhandRM(E)-CBM-2008/IVEOL1128Exploration3.Madhya Pradesh & ChhattisgarhSP(NE)-CBM-2008/IVEOL339Exploration4.Madhya PradeshSR-CBM-2005/IIIDIL & Coal Gas330Exploration
Slide25CBM Blocks Terminated and PEL Awaited
Sl. No.
State
Block
Contractor
Area (sq. km.)
Present Status
1.
Tamil Nadu
MG-CBM-2008/IVGEECL667Under arbitration2.OdishaTL-CBM-2008/IVEOL557PEL awaited3.OdishaIB-CBM-2008/IVEOL209PEL awaited
Slide26CBM Blocks under Relinquishment
Sl. No.
State
Block
Contractor
Area (sq. km.)
1.
Jharkhand
SK-CBM-2003/II
ONGC702.JharkhandNK(W)-CBM-2003/IIONGC2673.West BengalBB-CBM-2005/IIIBritish Petroleum2484.ChhattisgarhMR-CBM-2005/IIIDart Energy, GAIL, EIG & TATA Power6345.ChhattisgarhTR-CBM-2005/IIIDart Energy, GAIL, EIG & TATA Power4586.RajasthanBS(1)-CBM-2003/IIRIL10457.RajasthanBS(2)-CBM-2003/IIRIL10208.ChhattisgarhSH(N)-CBM-2003/IIRIL825
Slide27CBM Blocks under Relinquishment
Sl. No.
State
Block
Contractor
Area (sq. km.)
9.
Andhra Pradesh
KG(E)-CBM-2005/III
REL, RNRL & Geopetrol75010.RajasthanBS(4)-CBM-2005/IIIREL, RNRL & Geopetrol116811.RajasthanBS(5)-CBM-2005/IIIREL, RNRL & Geopetrol73912.TelanganaGV(N)-CBM-2005/IIICoal Gas, DIL & Adinath38613.JharkhandRM-CBM-2005/IIIDart Energy, GAIL, EIG & TATA Power46914.AssamAS-CBM-2008/IVDart Energy & OIL113
Slide28CBM Blocks Relinquished
Sl. No.
State
Block
Contractor
Area (sq. km.)
1.
Madhya Pradesh
ST-CBM-2003/II
ONGC7142.MaharashtraWD-CBM-2003/IIONGC5033.RajasthanBS(3)-CBM-2003/IIONGC & CIL7904.Madhya PradeshST-CBM-2008/IVDart Energy & TATA Power714
Slide29Reg. 142 of CMR, 1957
For the purpose of this regulation, inflammable gas shall be deemed to have been found or detected when it is indicated by the lowered flame of a flame safety lamp, or where methane indicators are used, they indicate one and a quarter percent or more of inflammable gas.
When any person detects the presence of inflammable gas, he shall not brush or waft it out, but shall immediately withdraw from the place and shall inform his superior official about the same.
Where in any place in a mine, inflammable or noxious gas is detected, all persons shall be withdrawn from the place, and the place shall be immediately fenced off so as to prevent persons inadvertently entering the same. The overman or other competent person in charge shall, without delay, take steps to remove the gas by improving the ventilation.
Slide30Reg. 142 of CMR, 1957
During the removal of such gas, all persons, except those necessary for such removal, shall be withdrawn from the return side of the ventilating district in which the gas has been detected unless quantity of gas is, in the opinion of the overman or other competent person, so small that no such withdrawal is necessary:
Provided that where the danger arises from the presence of inflammable gas, no naked light shall be used in the ventilating district in which the gas is detected.
No person shall be re-admitted into the place where the gas was detected until a competent person has examined the place and has reported that the place is free from gas. Every such examination shall be made with an approved flame safety lamp, and in the case of noxious gas, also with a cage containing suitable birds or other means of detecting carbon monoxide gas approved by the Chief Inspector.
Particulars of every occurrence referred to in sub-regulation (2) and of every examination made under sub-regulation (5), together with a statement as to where and when the gas was found and when it was removed, and in case of inflammable gas, the percentage thereof shall be recorded in a bound-paged book kept for the purpose. Every such entry shall be signed and dated by the competent person making the report, and countersigned and dated by the manager.
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Slide31Sub-regulation (1)(e) of Reg. 145 of CMR, 1957
Where electrical energy is used in any ventilating district in a gassy seam of the second or third degree, determination shall be made of the percentage of inflammable gas present in the general body of air, and the following provisions shall apply in respect of such determination namely:
If any determination in any ventilating district shows the percentage of inflammable gas to exceed one and a quarter, the supply of electric energy shall be cut off immediately from all cables and apparatus in the district, and a written report thereof submitted to the Regional Inspector forthwith.
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Slide32Reg. 175 of CMR, 1957
In any gassy seam the following additional precautions shall be taken –
If in the ventilating district, presence of inflammable gas is detected in any place, no shot-hole shall be charged, stemmed or fired in that place or in any other place situated on its return side till such place has been cleared of gas and declared safe.
Immediately before charging a shot-hole or a round of shot-holes and again before firing the shots, the shot-firer shall carefully test for inflammable gas at all places within a radius of 18 meters of the place of firing.
No shot-hole shall be charged if any break is found therein, or if inflammable gas is found issuing therefrom.
If after charging a shot-hole, inflammable gas is found in any place within prescribed radius, no shot shall be fired until the place has been cleared of gas and declared safe.
No delay action detonator shall be used, except with the previous permission in writing of the Chief Inspector and subject to such conditions as he may specify therein.
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Slide33Sub-rule (4) of Rule 126 of IER, 1956
In any coal seam of degree second and degree third gassiness or the danger zone of oil-mine the supply shall be discontinued –
Immediately, if open sparking occurs;
During the period required for examination or adjustment of the apparatus, which would necessitate the exposing of any part liable to open sparking;
The supply shall not be re-connected until the apparatus has been examined by the electrical supervisor or one of his duly appointed assistants until the defect, if any, has been remedied or the necessary adjustment made;
A flame safety lamp shall be provided and maintained in a state of continuous illumination near an apparatus (including portable or transportable apparatus) which remains energised and where the appearance of the flame of such safety lamps indicates the presence of inflammable gas, the supply to all apparatus in the vicinity shall be immediately disconnected and the incident reported forthwith to an official of the mine;
and such apparatus shall be interlocked with the controlling switch in such a manner as to disconnect power supply automatically in the event of percentage of inflammable gas exceeding one and one-quarter in that particular district;
Provided that where apparatus for automatic detection of the percentage of inflammable gas or vapour are employed in addition to the flame safety lamps, such apparatus shall be approved by the Inspector of Mines and maintained in perfect order.
Slide34Sub-rule (5) of Rule 126 of IER, 1956
(i) In any part of a coal seam of any degree of gassiness or in any hazardous area of an oil-mine, if the presence of inflammable gas in the general body of air is found any time to exceed one and one-quarter percent, the supply of energy shall be immediately disconnected from all cables and apparatus in the area and the supply shall not be re-connected so long as the percentage of inflammable gas remains in excess of one and one-quarter:
In an oil-mine where concentration of inflammable gas exceed 20 percent o its lowest explosive limit, the supply of electric energy shall be cut off immediately from all cables and apparatus lying within 30 meters of the installation and all sources of ignition shall be removed from the said area and normal work shall not be resumed unless the area is made gas-free.
Provided that such disconnections shall not apply to intrinsically safe environmental monitoring scientific instruments.
(ii) Any such disconnection or re-connection of the supply shall be noted in the log-sheet which shall be maintained in the form set out in Annexure XII and shall be reported to the Inspector.
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