Larsen and Toubro (L&T) is one of the largest engineering and construction companies in India, founded in 1938. Kundan Giri completed a summer internship with L&T's ECC Division in 2012. The internship involved working on a project to erect 13 transformers weighing 209 metric tons each at a power grid in Delhi. The project faced challenges including a tight schedule, space constraints, and mobilizing the large transformers. The construction methodology involved mobilizing transformer parts to the site, assembling them, lifting them into place with hydraulic jacks, connecting lines, and testing them.

1. SUMMER INTERNSHIP 2012 @
LARSEN AND TOUBRO
CONSTRUCTION
(ECC DIVISION)
10 July 2012 – 25 August 2012
Kundan Giri

2. : L & T AT A GLANCE :
 Founded in 1938 by two Danish
engineers, Henning Holck-Larsen
and Soren Kristian Toubro
 One of the largest engineering and
construction company in India.
 L&T ranks 40 in the top 225
global contractors 2008 data,
improved from 47th (2007) &
54th (2006).

3. L & T BUSINESSES :
Projects Products Services
Construction Electrical & IT &
Electronics Technology
E&C Projects Services
Machinery &
Heavy Engg. Industrial Financial
Products Services

4. Transport Infrastructure & Water
Buildings & Factories
ECCD
Process

5. jaltikalan powergrid, DELHI

6. Project Location

7. Project Highlights
 Projective objective: erection of ICT
(interconnecting transformer)in power
grid
 No. of transformers : 13
 Transformer capacity : 765/400kv
 Unit weight of each transformer : 209
MT
 Transformer’s make : TBEA
Shenyang(chinese)

8. Project Synopsis
Name of the project Erection of 765/400 kv ICT (Interconnecting transformers)
Client Power grid Corporation of India (PGCIL)
Project Manager Mr. SNEHASHISH DEBNATH
Site Engineer Mr. Jasmeet Singh
Chief Electrical Engineer Mr. Tushar kumar
Transformers make TBEA Shenyang(chinese)/500mva each
Q.S./Cost Estimator Padghams Swett
LEEDS Certification Surmount Energy Solutions Pvt Ltd.
Type of Contract Tender
Contract Value 85 Crore
Contract Duration 11 Months. (8+ 3)
Contractual Start (LOI)Date 9th dec 2011
Contractual Completion
8th nov 2012
Date
DLP/Maintenance Period 1 Year

9. SOME FEATURES OF PROJECT
• Project Office, Safety hall, Client's
Office etc is setup on MMRDA Plot
besides site.
Infrastructure
Setup
• Infrastructure Setup ( Labour
Proposed Site Sheds , Batching Plant , etc ) would
be arranged on land provided by
Client.

10. PROJECT CHALLENGES
Tight Project Schedule.
Space Constraint
Higher Volume of Work within Stipulated time.
Mobilization of Transformers weighing 209 MT
 Mobilization of skilled Manpower Place for transformer

11. CONSTRUCTION METHODOLOGY – TYPICAL FORMWORK SYSTEM
The whole project
can be described in
following manner :
• Mobilization of
transformer in
parts from import
site to
construction site
• Erection of
proper vibration
shielding base at
the site of
construction

12. • Reassembly of parts of
transformers at the site
• Unloading and loading
of transformers using
2x100 MT hydraulic
jacks
• Fixing the transformers
using concrete
• Connection of cooling
lines, transmission
lines, grid maintenance
lines
• Filling of coolant and
test run using gen-
sets.

13. MOMENTS @ SITE
THANKYOU ….