a report on field visit to b.t.i and n.h. e

A REPORT ON FIELD VISIT TO

B.T.I AND N.H. E OXFORD COLLEGE OF ENGINEERING AND

MANAGEMENT

Submitted By: Samir Raj Bhandari

Sixth Semester Bachelor of Electrical and Electronics

FRIDAY, SEPTEMBER 8, 2017 ACCOMPANED BY Er. Bhim Bhandari

H.O. D Electrical and Electronics Er. Ashish Shrestha

Lecturer

A Report on Field Visit To B.T.I And N.H. E September 8, 2017

Oxford College of Engineering and Management 1 | P a g e SAMIR RAJ BHANDARI

A Day Field Trip:

Butwal Technical Institute (B.T.I) and Nepal Hydro and Electric Limited (N.H.E)

Location: Butwal-6, Odd Hoftun Path, Rupendehi.

Contacts:

B.T.I

Phone: +977-071-540133, Fax: +977-071-543698

E-mail: [email protected], Web: www.bti.org.np

N.H.E

Phone: +977-071-540212, Fax: +977-071-540456

Web: www.nhe.com.np

Date: 08/09/2017, Friday.

Participants: 6th semester (6 members) and 4th semester (22 members)

Schedule:

Start: 7:00 am

Stop 1- Visit of the Butwal Technical Institute in Butwal.

Stop 2- Visit of the Nepal Hydro and Electric limited in Butwal.

End: 4:00 pm

About Butwal Technical Institute

Figure 1: Outer look of B.T.I

mailto:[email protected]

http://www.bti.org.np/

http://www.nhe.com.np/



Butwal Technical Institute (BTI) was established as a project under an agreement between Government

of Nepal and the United Nations Mission to Nepal (UMN) on 21st Kartik 2020 B.S. (7th November 1963

A.D.). since 18th Poush 2067 (2nd January 2011) this institute is operating as a “Company not Distributing

Profit” under company Act 2063. It alliance with the industries of Nepal to provide apprenticeship

training in Mechanical, Electrical, Welding and carpentry. It provides short term and long-term training

programs starting from 3 months to 4 years course in the above faculty. It has many disciplines to offer

to meet the needs of user agencies. Its intake capacity is 430 students including both short and long-

term courses. It has very good recognition in the job market.

The managing board consists of seven members out of which four are from public sector and three from

the private sectors.

In our visit to the BTI we came across different aspect of practical education. We had an excellent

opportunity to learn something about different kinds of mechanical, electrical equipment and tools.

We also came across different new equipment like MIG and TIG welders, their scope, mechanism and

working. We also visited different faculty of BTI with their lab installments like Mechanical, Electrical and

Welding. BTI has some most advanced equipment in Nepal. We came to know that BTI as an institute

has a great practical exposure to the students. As said by the chief executive officer 80% of the BTI

format of education involves practical and 20% involves theory.

Students at BTI spend most of their time in fields and industries which was very impressive and

appreciable. We spent a very knowledgeable time in BTI.

About Nepal Hydro and Electric Limited

Figure 2: Entrance of NHE



NHE does different works in mechanical and electrical equipment manufacturing involved in hydro and

electric power generation, transmission, distribution, heavy steel structure, project management and

related activities in the hydropower industry. It is a public limited company established in 1985 A.D.

Their capabilities include design, manufacturing and installation of hydropower equipment, mainly

covering various types of hydraulic gates, stoplogs, trash racks, penstock pipes, medium sized turbine

housings/casings, micro/mini turbines and substations. It aims to satisfy customer needs in the

manufacture, erection, testing commissioning and through life support of equipment in the

hydroelectric power Generation, transmission and distribution industry, by building up their own

capabilities and by maximizing the use of local.

In our visit to NHE we mainly dealt with our subject matter for this semester of Power Plant Equipment

which included turbines, gates, transformers, power house equipment and generators.

Luckily, we had all the opportunity to see all of those in single place in a very short time thanks to our

department for such a lovely arrangement.

In NHE they do all kinds of manufacturing, maintenance and repairing of the following things:

S.N. PRODUCT TYPE CAPACITY

1. Water Turbine

Propeller - Pico Hydro Cross-flow - Micro and Mini Hydro Pelton - Micro and Mini Hydro Pelton housing - Medium Hydro Francis stay ring and spiral casing - Medium Hydro

200w-- l5 kw t0 - 250 kw 50 - 250 kw Runner outside diameter up to 4.5m Stay Ring outside diameter up to 4.5m

2. Valve Repairing of sluice, spherical and butterfly Limited

3. Penstocks surface, pressure, lining, manifold, branch tube and draft tube

Rolling thickness max.42mm, 5.5 m dia of 3m section

4. Gates Radial, Roller, Slide and Bulk Head Maximum l5m x 22m size

5. Motor and generator

Maximum l5m x 22m size Maximum up to 500 kW

6. Transformer Repairing/Rewinding Maximum up to 30 MVA, 132 kV class

7. Steel pole Telescopic and Tubular Maximum up to 33 kV power line

8. Other relevant structure

Truss & girder brigs and heavy steel trusses Limited by our lifting capacity

It also had many mechanical and electrical equipment some major equipment are:

Mechanical equipment: Plano Milling Machine, Horizontal lathe, vertical lathe, Horizontal boring/milling

machine, Radial drilling machine, Planer machine, Face lathe, Bending break machine, Plate rolling

machine, Automatic metal cutting machine, Guillotine clipper, Hydraulic press, Electric air compressor,

Sand blasting cubicle, Dry pressure painting machine, Standby generating set, Power supply transformer,

Galvanizing plant, Heat treatment chamber, Mobile crane, Fork lift, Overhead crane (EOT)



Electrical Equipment: Winding machines, Drying oven, Vacuum oil filling chamber, Oil treatment plant

(High Vacuum filter), Overhead crane (EOT), induced potential test set, Separate source voltage

withstand Mobile fork lift.

Hydro-mechanical equipment is one of their major Products & services in the Hydropower industry.

They have done many works for different national and international hydropower industry.

1. Middle Marsyangdi: Fabrication, erection, testing and commissioning of Manifold, Penstock

Pipes of 5.5m dia & 450m long - total 1,200 tons.

2. Kali Gandaki ‘A ‘: Assembling of 3 nos. 56.5 MVA Generators including erection of all Electrical

equipment in the Powerhouse

3. Jimrukh 3* 4.2 MW and Khudi 4 MW

4. Khimti ‘I’: Fabrication of .5 units of I 2 MW Pelton Turbine Housings including installation,

testing and commissioning of complete Powerhouse Electro-mechanical equipment and 70

MVA, 10.5/132 kV Switchyard in Consortium with GE Energy

5. Chilime: Complete Hydro-mechanical & Electro-mechanical Equipment Works

6. CHHUKA HYDROPOWER STATION 4 X 84 MW BHUTAN: The Contract signing of third runner

"Reclamation of the 84 MW Vertical Pelton Turbine Runner"

Besides there are many other works done by NHE. It mainly gets job references from Nepal Electricity

Authority, Butwal Power Company Ltd., Himal Power Ltd., Bhote Koshi Power Co. Ltd., National Hydro

Power Co. Ltd., Chilime Hydro Power Co. Ltd., Druk Green Power Corporation Ltd., Bhutan

Altogether the visit to the NHE was very fruitful to us.

Glimpse of NHE

Figure 3: Horizontal lathe



Figure 4 & 5 : Milling machine (left) and concrete filling frame for power house (right)

Figure 6 : Participants with the instructor, explaning the Francis Turbine

Figure 7: Maintenance of Francis turbine (first and second) and Guide vanes



Figure 8: On load tap Changing Power transformer (left) and vertical lathe (right).

Figure 9: Submerged arc welding machine. (both)



Figure 10 : Penstock pipe manufactured at NHE for upper sanjan, Rasuwa.

Figure 11: Switch controlled power cranes to lift heavy equiptments



Figure 12: CNC machine (top left: platform, top right: gas cutter nozzle and bottom: view of CNC

machine )

Figure 13: Participants learning about Francis turbine, guide vanes ,valves, corrosion



Figure 14: HV winding machine.

Figure 15: Transformer brought for repair



Figure 16: Transformer coil from MINBHAWAN brought for repair. (both)

Figure 17: Participants learning three phase transformer.



Figure 18: HV winding machine

Figure 19: MIG welder machine at BTI



Figure 20: Vacuum oil filling chamber for transformers (all)



Figure 21: Overview of NHE from past decades

Achievements from the field visit to BTI and NHE

❖ Visualization of the theoretical subject matter.

❖ Introduction to new and advanced machine tools

❖ Industrial exposer.

❖ Managerial exposer

❖ Knowledge of electro-mechanical equipment.

❖ Meeting new people.

❖ Increased feeling of brotherhood with juniors

Recommendation for College and Department

❖ Pre-information to the concerned site regarding the visit

❖ Proper information about the site specifically its time schedules

❖ Scheme for token of love to the concerned authority

❖ Compulsion and encouragement for the students to take part in the visit.

❖ Introduction of similar teaching pattern as far as practicable to OCEM

Recommendation for BTI and NHE

❖ Provision of MoU: Memorandum of understanding between our college and their

institute would be very beneficial for the students regarding our practical exposer.

We found both the institute very cooperative and understanding.



Conclusion:

By observing BTI and NHE we can conclude that both the institutions were well managed and

cooperative.

We extend our heartiest thanks to the executive officers of both the institute for being so humble and

kind for letting us visit their premises. we would also like to thank all the unseen hands for the visit

without whom the visit won’t have been a success.

We would also like to thank our department for this visit. We also hope for the continuity of the similar

kind of exposer in the future.

Lastly, we learnt lots of new things and ideas from this visit mainly in the field of hydro power industry.

We are also egger to learn new things in other streams.

a report on field visit to b.t.i and n.h. e

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