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  • भारत सरकार
  • GOVT. OF INDIA
  • श्रम एवं रोजगार मंत्रालय
  • MINISTRY OF LABOUR AND EMPLOYMENT
  • खान सुरक्षा महानिदेशालय
  • DIRECTORATE GENERAL OF MINES SAFETY

Application

Approval Letter View

Approved No :- DGMS APPROVAL NO.- 85390/2020

NO: E-29021|20169|2018|Electrical(HQ)                          Dhanbad, Date: 24/11/2020

DGMS APPROVAL NO.-  85390/2020

From
Chief Inspector of Mines & 
Director General of Mines Safety
Directorate General of Mines Safety,
Dhanbad - 826 016.
 
To                                                                                                     
Shri Shib Bhowmik - Country Head
M/s. Joy Global (UK) Ltd.,
4 Swanwick Court, Alfreton,
Derbyshire, DE55 7 AS,  United Kingdom.
 
Sub:    Approval under Regulation 208 (3) of the Coal Mines Regulations, 2017 for Flameproof and Intrinsically safe electrical equipment as mentioned in Annexure-II associated with Roof Bolter, Model: DDR , manufactured by M/s. J.H. Fletcher & Co., for use in belowground Coal Mines under Regulation 208(3) of the Coal Mines Regulations, 2017.
 
Sir,
 
I, in exercise of powers conferred upon Chief Inspector of Mines (also designated as Director General of Mines Safety) under Regulation 208(3) of the Coal Mines Regulations, 2017 and in reference to Field Trial approval issued vide letter No. FT_E_6 dated 21.10.2019 and based on the performance report received from M/s. Eastern Coalfields Limited, hereby accord the approval (DGMS Approval No. 85390/2020)  granted vide this Directorate's letter No. E-29021|20169|2018|Electrical(HQ) dated 24/11/2020 for a period of five years, i.e. up to  24.11.2025 for use in belowground Coal Mines with the condition mentioned in Annexure-I. 
 
Please note that application for renewal should be made at least three (03) months before the date of expiry of the approval.
 
Yours faithfully
(PRABHAT KUMAR)
Chief Inspector of Mines
Directorate General of Mine Safety
 
Enclosure: Annexure – I & II
Annexure-I
 
Conditions for Approval under Regulation 208(3) of the Coal Mines Regulations, 2017, Flameproof and Intrinsically safe electrical equipment as mentioned in Annexure-II associated with Roof Bolter, Model: DDR, manufactured by M/s. J.H. Fletcher & Co.  for use in belowground Coal Mines under Regulation 208(3) of the Coal Mines Regulations, 2017.
 
1. Every Roof Bolter, Model: DDR shall carry conspicuously in a permanent manner the aforesaid identification mark, i.e. “DGMS Approval No. 85390/2020
 
In addition, every machine shall also carry permanently this Directorate’s approval mark as below:
 
 
2. (a)The design of the electrical circuit shall not be changed without obtaining prior approval from this Directorate.
 
    (b)Conspicuous warning inscriptions against opening the cover of the main enclosure or of any apparatus which gives access to the flameproof enclosures on live parts or which is designed to receive cable attachment unless the supply to the unit is isolated at source, shall be affixed permanently on the respective part to ensure that all live parts within the unit are made dead and safe.
 
3.  Spare parts shall be made readily available to the user as and when required for proper maintenance of the equipment.
 
4.   (a) The customer shall be supplied the copy of this approval letter, the test report from the testing laboratory with the lab certified drawing , an extract of the condition & special conditions, maintenance schedule, if any, recommended by the testing laboratory in their test report(s) so as to maintain safety features of apparatus/ equipment.
         
     (b) The customer shall also be provided a copy of factory test report along with drawings, instruction manual on the installation, operation and maintenance of the equipment and spares parts catalogue at the time of delivery of the equipment.
 
5. The user shall furnish the performance report of the equipment directly to this Directorate after one (01) year of actual use.
 
6.  While seeking renewal, valid BIS license in the case of Indian manufacturers and in case of foreign manufacturers, QAR/QAN, as may be applicable shall be submitted and the same shall remain valid as long as the apparatus is manufactured and marketed
 
7. Any modification to the equipment that might be considered necessary at a later date shall be effected upon being so directed by this Directorate.
 
8.  An officer of this Directorate may at any time draw a sample either from the factory or from the user and get it tested at the cost of the manufacturer.  If the test reports are not satisfactory, this approval shall be deemed to be suspended.
 
9.  The high pressure hydraulic hoses, if any, supplied with the machine shall conformed to the standards and parameters as prescribed in the DGMS/Mech/Tech.Cir (Approval) No. 04, Dhanabd, dated 13.02.2015.
 
10.  The Fire Resistant Hydraulic Fluid, if any, supplied with the machine shall conform to the standards and parameters as prescribed in DGMS/Mech/Tech.Cir (Approval) No. 02, Dhanbad, dated 13.02.2015.
 
11.   The cables connecting with Equipment shall conform to the provisions of the DGMS Tech. Circular (Electrical) No. 12 dated 25.05.2015 and corrigendum vide DGMS Tech. Circular (Electrical) Approval No. 01 dated 19.02.2016 in addition to the special requirement, if any, specifically for safe operation of the equipment.
 
12.   All covers, doors/access covers of the electrical equipment mounted on the equipment, on opening/removal which may expose live internal conductors, shall have warning instructions either by raised lettering or by other suitable means against such opening/removal of covers, doors and access covers, without isolating supply of energy to the equipment from its source
 
13.   The plug and socket assembly affixed to the motors/panel, if provided, will be so interlocked as to prevent removal of plug from the socket while alive.
 
14. Spare parts shall be made readily available as and when required for proper maintenance of the equipment. Any failure in the equipment shall be intimated to this Directorate.
 
16.   All sensing devices shall be regularly tested and, routinely calibrated or verified to ensure correct operation and a record of the same shall be maintained.
 
17.  All sensing devices shall be regularly tested and, routinely calibrated or verified to ensure correct operation and a record of the same shall be maintained.
 
18. The associated items for which approval has been issued is exclusively for use as part of this equipment only and shall not be read as individual approval for those items.
 
19. The electrical equipment and cables associated with the machine shall be checked by the Electrical Supervisor of the mine for their respective flameproofness of the equipment and condition of cables in the beginning of each working shift and the findings thereof enter into a bound-paged book maintained for that purpose which shall be duly signed by the Electrical Supervisor with the date.
 
20 . If there occurs any revision of standards applicable to the product/equipment , the manufacturer shall get the product/equipment tested as per revised standards and submit test reports to the  customer  for information and to this  Directorate for further approval/renewal.
 
21.  All circulars/general approvals issued by DGMS from time to time, relevant to the equipment shall also be complied with.
 
22. The approval of the subject equipment is with regard to Ex standards mentioned herein.  Other relevant standards applicable for assessment of its electrical parameters required under type test have not been taken into consideration.
 
23. The cable entry devices, threaded adaptors and stopping plugs shall be suitable for the equipment and be considered as a part of equipment (not a component).  The cable entry device and cabling methods used shall be suitable for their intended duty and for the special type of cable used in mining.  Such cable entry devices shall be duly certified as per relevant IS/IEC standards.
 
24. The relevant provisions of the Central Electricity Authority (Measures relating to Safety and Electric Supply) Regulations, 2010 shall be complied with in all matter relating to the installation, operation and maintenance of the equipment.
 
25. General arrangment drawing shall conform to Drawing No. 611670-00.
 
26.  The approval is accorded for a period of five (05) years from, i.e. up to 24.11.2025. 
 
27.  At the time of applying for renewal, details of supply with name of mines, purchase order and date shall be furnished with the application.
 
28. Any modification/alteration to the machine that might be considered necessary at a later date in the interest of safety or/and efficient handling, operation, maintenance and maneuverability of the machine shall be carried out upon being so directed.
 
29. If at any time any of the conditions subject to which this approval has been granted, is violated or not complied with, this approval shall be deemed to have been revoked with immediate effect.
 
30. The above approval may be amended or withdrawn at any time, if considered so necessary in the interest of safety and is being issued without prejudice to any other provisions of law which may be or may become applicable at any time.
 
 
 
Annexure-II
 
 
List of Flameproof and Intrinsically safe electrical equipment as mentioned in Annexure-I associated with Roof Bolter, Model: DDR,  manufactured by M/s. J.H. Fletcher & Co., for use in belowground Coal Mines.
 
 
Sl. No.
Description of electrical equipment
Manufa
cturer
Testing Laborato
ry
Test Report No. & Date
Standard to which the test is conducted
1
FLP 3 Phase, induction motor rated at 37KW,550/1140V, 4 pole, 1500 RPM, Pump Motor
Baldor
CIMFR, Dhanbad
CIMFR/TC/P/H686; Dated: 29.01.2014
IS/IEC 60079-0:2004;
IS/IEC 60079-1:2007
2
FLP enclosure for cable reeler rated at 300A, 1100V
JOY
CIMFR, Dhanbad
CIMFR/TC/P/H320; Dated: 26.07.2012
IS/IEC 60079-0:2004;
IS/IEC 60079-1:2007
3
Connection Box, 5100019785, 1100V
JOY
TUV Rheinland, Australia
IECEx ITA 15.0016; Dated: 25.09.2015
IEC 60079-0:2011;
IEC 60079-1:2014
4
Connection/Switch Box, Type 5100002582, 240V, 50A, Emergency Stop
JOY
TUV Rheinland, Australia
IECEx ITA 10.0002X; Dated: 15.03.2017
IEC 60079-0:2011;
IEC 60079-1:2014
5
FLP enclosure, 5100035085, rated at 1500V, 400 A
Main controller
JOY
EX testing & certification, Australia
CML 17ATEX1209X;
Dated: September 2018
EN 60079-0:2018;
EN 60079-1:2014
EN 60079-11:2012;
6
FLP/WP LED mining Luminaire, type ML100, 12-24V AC/DC
Head light
Victor
CIMFR, Dhanbad
CIMFR/TC/P/H552; Dated: 28.11.2013
IS/IEC 60079-0:2004;
IS/IEC 60079-1:2007;
7
FLP/WP fluorescent Luminaire, model ML102, 120V, 15W
Area light
Victor
CIMFR, Dhanbad
CIMFR/TC/P/H126; Dated: 30.06.2015
IS/IEC 60079-0:2004;
IS/IEC 60079-1:2007;
IS/IEC 60529-2001
8
STX-3261 Methane SENSOR
Trolex Ltd.
CIMFR, Dhanbad
CIMFR/TC/P/H679; Dated: 10.01.2013
IS/IEC 60079-0:2004;
IS/IEC 60079-11:2006;
IS/IEC 60529-2001
9
IS Power supply, BBU TX6648 with interface relay TX6661, 7.5V/12V
Trolex Ltd.
SIRA Certification Service, UK
Sira R22160B/00
SIRA 02ATEX 3418X
Dated: August 2010
EN 60079-0:2006;
EN 60079-11:2007;
10
TX9042 Programmable Sensor Controller, 12V DC
Trolex Ltd.
CIMFR, Dhanbad
CIMFR/TC/P/H674; Dated: 10.01.2013
IS/IEC 60079-0:2004;
IS/IEC 60079-11:2006;
IS/IEC 60529-2001
11
Isolating Switch Amplifier, Type IM1-451-Ex-R
Turck
TUV, Germany
IECEx TUN 06.0007X; Dated 22.07.2011; DE/TUN/ExTR08.0029/01
IEC 60079-0:2007;
IEC 60079-11:2006
12
Audio Visual Alarm (AVA) for Methane,
TX6831
Trolex
ERTL, Kolkata
ERTL(E)/TES/T238/0064/11-12, Dated: 12.03.2013
IS/IEC 60079-0:2004;
IS/IEC 60079-11:2006
13
FLP enclosure, 5100016553, rated at 120V rms
for BBU and relay
Joy
CML, UK
IECEx CML 18.0112X; Dated: 06.08.2018
IEC 60079-0:2017;
IEC 60079-1:2014
IEC 60079-11:2006
14
Siren, Type HAFC, 9-50 V AC/DC
Audio Visual Alarm
Hytronic
MASC, SA
IECEx ICS 17.0003X; Dated: 22.07.2019
IEC 60079-0:2011;
IEC 60079-1:2014
IEC 60079-11:2011
15
Cable Gland, Type 623, M50
Joy
CIMFR, Dhanbad
CIMFR/TC/P/H40; Dated: 11.04.2014
IS/IEC 60079-0:2004
IS/IEC 60079-1:2007
IS/IEC 60529-2001
 
 
(PRABHAT KUMAR)
Chief Inspector of Mines
Directorate General of Mine Safety
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