NO: E-29021|20129|2018|Electrical(HQ)

Dhanbad, Date: 15/05/2018

DGMS APPROVAL NO.-E_65094/0

From

Director General of Mines Safety
Directorate General of Mines Safety,
P.O & Distt: Dhanbad - 826 016.

To

AJIT SINGH YADAV, ELECTRICAL EQUIPMENT CORPORATION, Plot No 314 Udyog Vihar Phase- VI, Sector-37, Gurgaon
Haryana, Gurgaon, Gurgaon, 122001

Sub:   DGMS approval under Regulation ____ of the ____ for Flameproof/Weatherproof ____, designated by Type: ____ conforming to IS/IEC ____,IS/IEC:____ and IS/IEC ____manufactured by M/s. ____ for use in ____ mines.

Dear ir,

Please refer to you letter No. MMPL/DGMS/LCCM/16(05)-01 dated 04.05.2016 and subsequent correspondence thereupon the above subject.

     Based on the test report as mentioned in Annexure-A, the flameproof and intrinsically safe electrical equipment associated with Continuous Miner Model: CMH-160  may be put on field trial in Jamadoba underground Colliery of  M/s. Tata Steel, Jamadoba, Dhanbad subject to the following conditions:

1. The installation, operation and maintenance of the above equipment shall be carried out under the direct supervision of the manufacturer and in accordance with the relevant provisions of the Central Electricity Authority (Measures relating to Safety and Electric Supply) Regulations, 2010.
2. The duration of the field trial shall not be less than three (03) months.  During this period, manufacturer shall maintain close rapport with the user & Director of Mines Safety (Elect.), Central Zone, Dhanbad so as to facilitate satisfactory field trial of the equipment.
3. A copy of the instruction manual on the installation, maintenance and operation of the above equipment shall be handed over to the user.
4. The user shall be supplied an extract of the conditions and maintenance schedule if any recommended by the concerned test house in their test reports so as to maintain the safety features of the apparatus as per their recommendations.
5. The date of commencement of field trial at Jamadoba Colliery, Jamadoba shall be intimated to the Director of Mines Safety (Elect.) Central Zone, Dhanbad through Dy. Director General of Mines Safety, Central Zone, Dhanbad and to this Directorate immediately.
6. Final approval of the equipment shall be considered only on receipt of satisfactory performance report from the user as well as the field officer of this Directorate.
7. The status of health, integrity of protection, safety features and performance of the equipment/machinery shall be monitored by the manufacturer and the mine officials periodically. In the event of any failures of the equipment observed or any modifications carried out during field trial, the same shall be communicated to this office in writing by the manufacturer and Agent of the mine.
8. Standard operating procedures (SOPs) shall be prepared for installation, operation & maintenance of all equipment associated with the Continuous Miner.
9. While seeking final approval, valid BIS license in the case of Indian manufacturers and in case of foreign manufacturers, QAR/QAN for the associated flameproof / weatherproof / intrinsically safe apparatus as may be applicable shall be submitted and the same shall remain valid as long as the apparatus is manufactured and marketed.
10. 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.
11. 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.
12. The fire resistant hydraulic fluid used in the equipment shall comply shall comply with the  standards and parameters as prescribed in the DGMS/Mech/Tech.Cir (Approval) No. 02, Dhanbad, dated 13.02.2015.
13. The high pressure hydraulic hoses used with the equipment shall conform to the standards and parameters as prescribed in the DGMS/Mech/Tech.Cir (Approval) No. 04, Dhanabd, dated 13.02.2015.
14. 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.
15. The general arrangement drawing of the equipment shall conform to the Drawing No. NGC LCCM-GI and the modifications on the Model  CMH-160in particular, shall not be carried out without prior approval of this Directorate.
16. The Audio Visual Alarm used in the machine shall conform to the standards and parameters as prescribed in the DGMS Tech. Circular (Electrical), Approval No. 21 dated  05.10.2015.
17. 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.?
18. All circulars/general approvals issued by DGMS from time to time, relevant to the equipment shall also be complied with.

The permission is issued exclusively for the purpose of field trial which is liable to be withdrawn/modified if considered so necessary and revoked, in case of any of the conditions subject to which this permission is issued, being violated or not complied with and is valid for one (01) year from the date of issue of this letter.  If the process of field trial is not completed during this period, the issuing authority reserves the right to withdraw field trial permission.

                                                                                        Yours faithfully,

                                                                          Sd/-

                                                           (Prasanta Kumar Sarkar)

                                                            Director General of Mines Safety

Annexure-A

List of flameproof and intrinsically safe electrical equipment associated with Low Capacity Continuous Miner Model: CMH-160 manufactured by M/s. China Transmission Heavy Equipment Co. Ltd., China for use in Jamadoba Colliery of M/s. Tata Steel Ltd., Jamadoba under Regulation 208(3) of the Coal Mines Regulations, 2017 issued by Directorate’s letter No………………..……./EHQ,

Sub:  Renewal of DGMS approval no. 513 of 2004 under Regulation 208 (3) of the Coal Mines Regulations, 2017 for flameproof temperature switch in stainless steel construction, type-EEC/FLP/TS-2002 conforming to IS/IEC 60079-1:2007 and IS/IEC 60079-0:2004 manufactured by M/s. Electrical Equipment Corporation, Gurgaon for use in belowground Coal Mines.

Ref:    CIMFR test report no. CIMFR/TC/P/H27 dated 15.04.2011.

Please refer to your letter no. EEC/DGMS/RKG dated 26.02.2018 and subsequent correspondence on the above subject.

Based on DGMS approval no. 513 of 2004 issued by this Directorate’s letter no. 362/1138/EHQ dated 21.05.2004, BIS Licence no. CM/L-2291047 and above CIMFR test report under reference, I hereby renew the approval upto 21.05.2023  from the date of expiry i.e., 21.05.2018 for use in belowground Coal Mines, subject to compliance with conditions stipulated in the original approval as well as annexure enclosed with this renewal letter.

Please note that application for renewal should be made at least three (03) months before the date of expiry of the approval.

Annexure

Conditions for renewal of approval no. 513 of 2004 under Regulation 208 (3) of the Coal Mines Regulations, 2017 for flameproof temperature switch in stainless steel construction, type-EEC/FLP/TS-2002 conforming to IS/IEC 60079-1:2007 and  IS/IEC 60079-0:2004 manufactured by M/s. Electrical Equipment Corporation, Gurgaon for use in belowground Coal Mines.

1. Every unit shall carry conspicuously in a permanent manner the aforesaid identification mark, i.e. ‘DGMS APPROVAL NO. 513 of 2004 renewed vide this DGMS letter.

            (i)   In addition, every unit shall also carry permanently this Directorate’s approval mark, a copy of which is enclosed.

  (ii) In the nameplate marking shall be in accordance with the applicable requirements of the relevant standards.

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.       Any modification to the equipment that might be considered necessary at a later date shall be effected upon being so directed by this Directorate.

              7.     While seeking renewal of approval, 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.

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.       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.

10.     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.

11.     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.

12.     All circulars/general approvals issued by DGMS from time to time, relevant to the equipment shall also be complied with.

13.     In case of any permissible variations issued from this Directorate, they shall also be read along with this letter and the original approval letter.

             14.     The approval is renewed upto 21.05.2023  from the date of expiry i.e., 21.05.2018.

15.     The equipment manufactured subsequently shall be identical to the proto type tested at CIMFR vide test report Nos. CIMFR/TC/P/H27 dated 15.04.2011.

16.     At the time of applying for renewal, details of supply with name of mines, purchase order and date shall be furnished with the application.

17.     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.

18.     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.