DGMS

Application

Renewal Letter View

Approved Renewal No :- 142406/2026/02

NO: M-29020|62642|2026|Mechanical(HQ)

Dhanbad, Date: 25/02/2026

Approval No. Mech-142406/2026/02

From

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

JAYANTA BHATTACHARYA, GAINWELL ENGINEERING PRIVATE LIMITED, 602, GODREJ WATERSIDE, 6TH FLOOR, TOWER-I, BLOCK-DP, SECTOR-V, SALT LAKE
WEST BENGAL, KOLKATA, KOLKATA, 700091

Ref:- CIMFR test report nos. mentioned in Annexure-B.

Sub: Regular approval of IC Engine (DITA Diesel Engine (Caterpillar 3126-230)), FLP &Intrinsically Safe Electrical equipments associated with Diesel Utility Vehicle Model CL-210 (Old modelFBL-10) with Wet scrubber system, of M/s Gainwell Engineering Private Limited (Earlier Approval on M/s. Caterpillar Global MiningEurope GmbH, Germany) for use in Belowground Coal Mines.

IDENTIFICATION MARK

Application Code: Mech-142406/2026/02 BIS License: undefined
Equipment Name :Internal combustion engine
Validity StartDate: 10/12/2025 Validity EndDate:09/12/2030

Dear Sir/Mam

1. Please refer to (i) your online application made vide ID: 62642 dated 04.12.2025, (ii) FT Approval vide No. Mech (HQ)/FT/ DUV-FBL10/ Caterpillar/ 327dated 06.09.2016 (iii) Regular Approval vide : No. Mech (HQ)/Caterpilar//CL210/2020-21/APP-03 (M-29020|30550| 2020|Mechanical (HQ)) Dtd.22.12.2020 , (iv) Previous Amendment vide No. Mech (HQ) /Caterpilar/CL210/2020-21/APP-03) vide letter no. M-29020|61491|2023| Mechanical (HQ) dtd.03.03.2023 & other documents submitted on this Subject.

2. In exercise of the 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, I hereby renew the validity of approval refer Para1(iii) above to work at Belowground coal mines below for a period of five years i.e. upto 10.12.2030 subject to the conditions mentioned in Ref. Para 1(ii), 1(iii), 1(iv) and the following additional conditions.

(i) Equipment shall be maintained as per DGMS (S&T)/(Tech.) Circular No. 01 Dated 13.08.2018.

(ii)The subject approval is valid for use of subject Equipment in Belowground Coal Mines to work at Jhanjra Colliery of M/s Eastern Coalfields Limited, Paschim Bardhaman (West Bengal) for which performance was submitted.

(iii) The test reports of all 11 nos. Flameproof & Intrinsically Safe Electrical apparatus associated with Diesel Utility Vehicle Model CL-210 (Mentioned in Annexure ‘B’ of Ref Para 1(iii)) as per the latest applicable testing standards IS/IEC 60079- 0:2017, IS/IEC 60079- 1:2014 & IS/IEC 60079- 11:2023 to be submitted within 90 Days from the date of issue of this letter.

3. The application for renewal of approval shall be made online at least 90 days before the date of expiry of this approval.

Your Faithfully,

(UJJWAL TAH)
Director General of Mine Safety - (HQ)
Date : 25/02/2026

THIS IS A SYSTEM GENERATED DOCUMENT, DOES NOT REQUIRE ANY SIGNATURE.

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