Flameproof cable coupler and adaptor up to 6.6 kV (Mine Line)

Government of India Ministry of Labour & Employment Directorate General of Mines Safety /EHQ, Dhanbad, dated No.

From:

• 2017 Director General of Mines Safety Directorate General of Mines Safety P.o & Distt: Dhanbad-826 016.

To Mrs. Nandini Chakravamy' - Managing Director M/s. Mine Line Pvt. Ltd.

23, Indrani Park, Kolkata-700 033.

Sub: Renewal of DGMS approval no. 458 of 1999 under Regulation 181 (3) of the Coal Mines Regulations, 1957 for flameproof cable coupler & adaptor rated upto 6.6 KV and upto 600 A, model no. R61/R62 manufactured by MIS. Mine Line Pvt. Ltd., Kolkata conforming to IS/IEC 60079-1•.2007 and IS/IEC 60079-0:2004 for use in belowground Coal Mines.

Ref: CIMFR test report no. CIMFR/TC/SR/H698 dated 02.03.2012.

IDENTIFICATION MARK DGMS APPROVAL NO. 458 of 1999 Dear Sir, Please refer to your letter no. M17/DGMS/1 dated 0604.2017 on the above subject.

Based on DGMS approval no. 458 of 1999 issued by this Directorate's letter no.

333/309/EHQ dated 30.Ü3.iCJ3Y, Licence no. test report under reference, I hereby renew the approval upto 10.0772022 from the date of expiry i.e. from 10.07.2017 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.

Enci : Annexure Yours faithfully, (Prasanta !<umar Sarkar)

Director General of Mines Safety Annexure DGiViS approval no. 458 or 1999 renewed by this Directorate's letter no.

tated...

Conditions for renewal of DGMS approva! n,c. 4E8 cf 13" under Regulation 181 (3) of the Coai Mines Regulations, 1957 flameproof cable coupler & adaptor rated upto 6.6 KV and upto 600 A, model no. R61/R62 manufactured by M/S Mine Line Pvt. Ltd., Kolkata conforming to IS/IEC 60079-1:2007 and IS/IEC 60079-0:2004 for use in belowground coal Mines 1.

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(i) Every unit shall carry conspicuously in a permanent manner the aforesaid identification mark, i.e. 'DGMS APPROVAL NO. 458 of 1999 renewed vide DGMS letter No..

dated.

In addition, every unit shall also carry permanently this Directorate's approval mark as given below :

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

(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 endosures 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.

Spare parts shall be made readily available to the user as and when required for proper maintenance cf the equipment.

(a) The customer shall he the copy approvai letter, the test report from the testing laboratory with the lab certified drawing , an extract of the condition & special conditions, maintenance scheduie, if any, recommended by the testing laboratory in thefr test report(s) so as to maintain safety features 6f apparatus/equipment.

(b) The customer shall also be provided a copy of factory test report along with drawings, instruction manual on the installation, oper?ticn and maintenance of the equipment and spares parts catalogue at the time of delivery cf the equipment.

The user shall furnish the performance -report of the equipment directly to this Directorate after one (01) year of actual use.

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

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-2- An officer cf Chis Directorace rnay any tirne c;ravv a sample eitha- from the factory ceports are not satisfactory, this approvai sheii be deemed co be suspencieci.

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 approvaurenewrl 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.

The renewal of the subject equipment is with regard to Ex standards mentioned herein. OL•hec standard; applicable for assessment cf its electrical parameters required under type test have not been taken into consideration.

All circuiars/general approvals issued by DCMS from time to time, relevant to the equipment shall also be complied with.

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

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.

The approval is renewed upto 10.07.2022 from the date of expiry. i.e. from 10.07.2017.

The equipment manufactured subsequently shall be identicai to the proto type tested at CIMFR vide test report no. CIMFR[fC/SR/H698 dated 02.03.2012 At the time of applying for renewal, details of suppiy with name of mines, purchase order and date shall be furnished with the application.

If at any time any of the conditions subject to which this approval has been granted, is violated or not complied with/ this approva; sha'l be deemed to have been revoked with immediate effect.

The above approval may be amended or withdrawn at any time, if considered so necessary in the interest of safety and is beinQ issued without prejudice to any other provisions of law which may be or may become applicable at any time.

(Prasanta Kumar Sarkar)