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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.- E_18245/12

NO: E-29021|20135|2018|Electrical(HQ)

Dhanbad, Date: 28/08/2020

DGMS APPROVAL NO.- E_18245/12

From

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

To

PRIYA RANJAN KUMAR, EASYM2M TECHNOLOGIES PVT LTD, 302, DSR COSMOS APT, GREEN GLEN LAYOUT, BELLANDUR
Karnataka, Bengaluru, Bengaluru, 560103

Sub:-   Approval under Regulation 208 (3) of the Coal Mines Regulations, 2017 for Flameproof and Intrinsically safe electrical equipment (as mentioned in Annexure-B) associated with Wireless Network Communication system manufactured by M/s. EasyM2M Technologies Pvt. Ltd., Bengaluru, for use in belowground Coal Mines in India.

Reference: Test reports as per Annexure – B.

                                                                                                                                        IDENTIFICATION MARK

DGMS APPROVAL No.   E_18245/12 of  2020

Dear Sir,

In reference to the field trial permission issued vide letter No. FT_E_6 dated 19.03.2019 issued vide letter No. E-29021/20135/2018/Electrical (HQ) dated 19.03.2019 and based on the performance report received from  M/s. Bharat Coking Coal Ltd., Dhanbad and test reports as referred above, approval is hereby accorded to the Flameproof and Intrinsically safe electrical equipment (as mentioned in Annexure-B) associated with Wireless Network Communication system for use below ground coal mines for a period of five (05) years from the date of issue of this letter, subject to compliance with conditions stipulated in Annexure-A.

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

Your Faithfully,

(DINESH KUMAR SAHU)
Director General of Mine Safety - (Officiating)
Date : 28/08/2020

Enclosure: Annexure A & B

 

Annexure-A

Conditions for Approval under Regulation 208(3) of the Coal Mines Regulations, 2017, for Flameproof and Intrinsically safe electrical equipment (as mentioned in Annexure-B) associated with Wireless Network Communication system manufactured by M/s. EasyM2M Technologies Pvt. Ltd., Bengaluru, for use in belowground Coal Mines in India.

  1.  Every Wireless Network Communication system manufactured by M/s. EasyM2M Technologies Pvt. Ltd., Bengaluru, shall carry conspicuously in a permanent manner the aforesaid identification mark, i.e. “DGMS Approval No. E_18245/12 of 2020.

                         In addition, every system shall also carry permanently this Directorate’s approval mark as below:

  1. (a)The design of the electrical / electronic 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 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.

7.       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.

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

9. 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.

  1. 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.
  1. The items associated with Wireless Network Communication system 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.
  1. 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.

      13.     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.

14.     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.

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

16.     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.

17.     The approval is accorded for a period of five (05) years from the date of issue of this letter.

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

19.     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.

20.     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-B

 

List of Flameproof and Intrinsically safe electrical equipment associated with Wireless Network Communication system., manufactured by M/s. EasyM2M Technologies Pvt. Ltd., Bengaluru for use in belowground Coal Mines in India.

S No

Description

Manufacturer

Testing Laboratory

Certificate No. & Date

Standards

1

Intrinsically Safe Smart WiFi Tracker,  3.7V DC, Wi-Fi Frequency Band : 2.4 GHz

EasyM2M

CIMFR

CIMFR/TC/P/H143 dated 25.10.2018

IS/IEC 60079-0: 2011

IS/IEC 60079-11:2006

2

Intrinsically Safe SMARTKAVACH - 3.7V DC, Wi-Fi Frequency Band : 2.4 GHz

EasyM2M

CIMFR

CIMFR/TC/P/1432 dated 27.09.2018

IS/IEC 60079-0: 2011

IS/IEC 60079-11:2006

3

Intrinsically Safe  SMARTPHONE, model – Smart-Ex 01M

 

ecom

Bureau Veritas, germany

IECEx EPS 16.0045X
Dated: 15.07.2016

IS/IEC 60079-0: 2011
IS/IEC 60079-11:2011

4

Isolator model- Isolate500RF

 

Extronics Limited

Baseefa

IECEx BAS 13.0064X dated 27.01.2014

IEC 60079-0: 2011
IEC 60079-11: 2011

5

 

 

FLP enclosure  Category No. PEW/CP/036 consists of following items:

Prompt

CIMFR

CIMFR/TC/S/1077  dated 20.06.2019

IS/IEC 60079-0: 2004 IS/IEC 60079-1: 2007

 

   a)

WiFi Access Point with Antenna

 

 

CIMFR/TC/S/91 dated 19.04.2016

 

   b)

Wireless Node - 100m with Internal/External Antenna 

 

CIMFR/TC/S/91 dated 19.04.2016

   c)

Wireless Node - 1000m with Internal/External Antenna

 

CIMFR/TC/S/91 dated 19.04.2016

  d)

Wireless Node - 5KM with Internal/External Antenna

 

CIMFR/TC/S/91 dated 19.04.2016

  e)

Wireless Node - 10KM with Internal/External Antenna

 

CIMFR/TC/S/91 dated 19.04.2016

 

f)

Battery &  inverter

CIMFR/TC/SR/1130 dated 30.11.2012

 

   g)

Network Switch / router

CIMFR/TC/SR/1130 dated 30.11.2012

 
(DINESH KUMAR SAHU)
Director General of Mine Safety - (Officating)
Date : 28/08/2020
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