Internship report GE hitachi

Internship report GE hitachi

SCHOOL OF MECHANICAL ENGINEERING

Internship Report

GE Hitachi

Student: Le Xuan Dat - 20110191

MEC 2 - K56

Engineer leader: Robin D Sprague

2 Preface | GE Power and Water

Contents

Preface 3

GE – Hitachi 4

GEH Vietnam 5

Economic Simplified Boiling Water Reactor 6

1 Nuclear Energy 6

2 ESBWR – Economic Simplified Boiling Water Reactor 6

Internship Program – Designing Process 8

1 Shroud Head Bolt 8

2 Designing Process 9

a Brainstorm 9

b 3D model 9

c Analysis 10

d Conclusion 10

My Experience at GE 11

Other Activities 12

1 Culture Presentation 13

2 Washington DC 14

Conclusion 16

Comment 16

3 Preface | GE Power and Water

Preface

GE Hitachi Nuclear Energy (GEH) signed a memorandum of understanding to cooperate

in the field of nuclear engineering and technology with the Hanoi University of Science and Technology in Vietnam (HUST)

The signing is part of a bigger MOU between the university and GEH to collaborate on enhancing training opportunities and developing a highly qualified human resources in the fields of science and technology It sets out the provision of work experience opportunities for undergraduate and graduate students in nuclear, mechanical and electrical engineering programs via internships at GEH facilities to introduce them to the nuclear industry and technologies

The internship brought 12 students to Wilmington and lasted for 10 weeks It was the golden chances for students to reduce the gap between studying and working, also to experience the advanced technology and excellent organization in the most respected company

in the world

This report will introduce about GE-Hitachi, the latest nuclear reactors and the working procedures in GE-Hitachi

I learnt so many things by working with the group of elite engineers during 10 weeks at

GE Hitachi I am eager to receive the comments from my mentor, teacher about my performance From that, I am able to improve myself

4 GE – Hitachi | GE Power and Water

GE – Hitachi

Based in Wilmington, N.C., GE Hitachi Nuclear Energy (GEH) is a world-leading provider

of advanced reactors and nuclear services

Established in 2007, GEH is a global nuclear alliance created by GE and Hitachi to serve the global nuclear industry The nuclear alliance executes a single, strategic vision to create a broader portfolio of solutions, expanding its capabilities for new reactor and service opportunities

The alliance combines GE’s design expertise and history delivering reactors, fuels and services globally with Hitachi’s proven experience in advanced modular construction to offer customers around the world the technological leadership required to effectively enhance reactor performance, power output and safety

GEH operates training facilities in Wilmington and San Jose, California, and fuel manufacturing operations in Wilmington, Toronto and Kurihama, Japan

GEH’s headquarter, Wilmington, NC

5 GEH Vietnam | GE Power and Water

GEH Vietnam

GE has been present in Vietnam since 1992, and now employs about 750 employees, including engineering and manufacturing

GE technology helps deliver a quarter of the world’s electricity, and more than 2.000 megawatts (~10%) of installed power generation in Vietnam

Vietnam Airlines, Pacific, and Viet Jet utilize GE aircraft engines and lease GE airplanes

GE has worked to improve trade relations between US and Vietnam (helped achieve 2001 US-Vietnam trade agreement, supported US-Vietnam access to WTO in 2007, helping to gain US Congress approval in 2014 of the US -Vietnam 123 nuclear agreement)

GEH is ready for a long-term commitment to making Vietnam a world leader in nuclear power with its advanced Generation III+ ESBWR reactor technology

The GEH’s ESBWR is the world’s safest design with passive core cooling capability Safer, simpler, smarter

6 Economic Simplified Boiling Water Reactor | GE Power and Water

Economic Simplified Boiling Water

Reactor

1 Nuclear Energy

Nuclear energy plays a major role in meeting the world’s energy needs At the end of 2005, there were 443 nuclear power plants operating in 32 countries, with 25 more units under construction These plants account for 17% of the world’s electricity The industry remains dynamic, as evidenced by the fact that several new plants enter commercial operation every year and there are typically 30 or more in various stages of construction at any given time Generating electricity with nuclear energy permits economic and social development to be sustainable; that is, not limited by encroaching environmental concerns A non-nuclear, baseload power plant generates electricity by burning fossil fuels day in and day out and releasing the by-products to the environment A nuclear plant, on the other hand, generates large amounts of electricity with virtually no impact on the environment In quantitative terms,

if the world’s nuclear plants were replaced with coalfired plants, global CO2emissions would increase by 8% every year This would amount to 1,600 million tons per year at a time when the world is trying to reduce emissions by 4,200 million tons per year Similarly, if the world’s growing appetite for new electricity is met without nuclear energy playing a key role, CO2

emissions would quickly rise to levels that curtail economic growth

2 ESBWR – Economic Simplified Boiling Water Reactor

The ESBWR advanced nuclear plant will play an important role in meeting the conflicting needs of developed and developing economies for massive amounts of new electricity and the need worldwide to limit CO2 emissions It continues to use advanced technologies first applied

in the Advanced Boiling Water Reactor (ABWR) with simplifications in the recirculation system and ECCS Four ABWRs have been constructed in Japan and are reliably generating large amounts of low cost electricity Taiwan is constructing two more ABWRs which will enter commercial operation in 2009 and 2010 Other countries have similar strategies to deploy advanced nuclear plants, and the successful deployment of ABWRs in Japan and Taiwan, coupled with international agreements to limit CO2 emissions, will only reinforce these plans

7 Economic Simplified Boiling Water Reactor | GE Power and Water

The ESBWR represents an entirely new approach to the way nuclear plant projects are undertaken, modeled after the successful process used for ABWR The ABWR was licensed and designed in detail before construction ever began Once construction did begin, it proceeded smoothly from start to finish in just four years

The successful design, licensing, construction and operation of the ESBWR nuclear power plant will usher in a new era of safe, economic and environmentally friendly nuclear electricity The ESBWR is the first of a new generation of nuclear plants equipped with advanced technologies and features that raise plant safety to new levels that significantly improve the economic competitiveness of this form of generation

ESBWR Plant Model

8 Internship Program – Designing Process | GE Power and Water

Internship Program – Designing Process

At GEH, I was assigned in ESBWR Reactor Pressure Vessel Internal Design and Analysis team My job is re-designing the Shroud Head Bolt from ABWR model to be compatible with ESBWR which has different configurations This project requires creativity, professional skills with 3D computer aided design (CAD), using Autodesk Inventor, and finite element analysis (FEA), using ANSYS

I worked in B-11 Internal design team and reported to my engineer leader Robin Sprague Our team met every 2 weeks to make sure the project was on track It usually lasts for years; however, my work covered only 10 weeks of that long period

As a design engineer, I was involved in working on the Shroud Head Bolt as much as possible

The process included 4 stages:

- Brainstorm the idea (1 week)

- Create 3D model (4 weeks)

- Analyze the model (4 weeks)

- Evaluate ( 1 weeks)

1 Shroud Head Bolt

Instead of Nut and Bolt, Shroud Head Bolt is used to connect the Chimney and Separator because of its special characteristics The Shroud Head Bolt plays an important role in the ABWR – Advanced Boiling Water Reactor as well as new type ESBWR ESBWR nuclear power plant is built on the very successful ABWR model Although, they share the same principle, ESBWR has its own unique configurations which lead to different design

of Shroud Head Bolt

9 Internship Program – Designing Process | GE Power and Water

2 Designing Process

a Brainstorm

This is the most important step I spent the first week to setup my computer, reading materials I also participate in their training such as: ABWR, ESBWR, and PRISM These training gave me knowledge of reactor vessel, their technology and also the nuclear power business

To understand clearly about my project, I was escorted by my leader to GE’s workshop

to see the real model of Shroud Head Bolt From that experience, I understood the mechanism

in the Head Bolt, how it work, and its purpose in the vessel

It took me days to have an idea I tried to come up with complicated ideas, special mechanisms However, these ideas were unable to work properly under high work-load and pressure Finally, simple idea had more chance to success than any I start begin the second step which was creating 3D model

b 3D model

Once a brainstormed solution had been accepted I embodied it in a preliminary design I focused on keeping the design as simple as possible while ensuring that it fitted within the required physical envelope and met the design requirements

I used Autodesk Inventor to create model because Inventor is excellent in the parametric area, dimensional & geometric constraints, parameter adaptation etc Inventor is especially good in the assembly area (it has a separate area for part models and assembly models) Besides, it creates mass and volume to the object, the model looks very realistic and can be rendered to look very realistic Also, with Autodesk Inventor I can create a sketch before adding dimensions and sizes to it, unlike AutoCAD where you have to know your dimension before you create

I created the model with dimensions from the original model I kept reporting to my leader to complete my 3D model I made 2 designs during this stage When finished, I moved to assembling simulation At this point, I could check the working positions, decide to continue next stage, or go back to previous stages

10 Internship Program – Designing Process | GE Power and Water

c Analysis

I knew that my models were able to perform correctly Then I need to evaluate the behavior of my model under high pressure, temperature and load To solve this problem, I used Ansys Workbench to predict how my model would operate in real condition

This software helped increase the project I applied working conditions, loads, then ANSYS calculated the shear force, bending moment, deformation … With the results, I must decide the final form, the thickness, length and suitable materials for my model

Finally, I submitted my final model to my leader, wrote a report

d Conclusion

It’s important to note that the Design process is not intended as a linear step by step process The Design process may contain various iterations depending on the complexity of the Design, input requirements, planning documents and engineering management direction, where all requirements and Design Inputs are not available at all process However, the goal is

to arrive at a final Design that, when released, meets all applicable requirements The identification and control of changes and risk is performed during all phases of Design process

During the Plan phase of the Design process, applicable requirements are identified including the Safety-Related Classification of the Design, Customer Technical Requirements and the applicable codes and standards (such as the American Society of Mechanical Engineers (ASME))

11 My Experience at GE | GE Power and Water

My Experience at GE

While working as design engineer, I realized that brainstorm is the hardest part I must come up with an idea, and it must fit the unique configuration of the vessel I did learn two lessons from that:

1 Simple is the best: Industrial product not only works efficiently, but also serves standard

of the maintenance, manufacture …

2 Experience and Creativity hold same rank: Creativity helps you come up with an idea while Experience develops it

There is a reason why I think that makes GE become the respected company in the world is organization

ESBWR team has hundreds of engineer from many departments Each department works on different fields such as: Mechanical design, Electrical system, Control system … They all connect with each other in many ways

Senior manager engineers must ensure that their teams are going on the same direction The organization is critical They must work with other colleagues from other departments, sometime from other regions or countries The diversity didn’t create conflicts but support the creativity They learn from each other and admit their mistakes

12 Other Activities | GE Power and Water

Other Activities

Throughout the summer, I had the opportunity to learn about many different facets of the GEH business through “Lunch and Learn” seminars, tours of plant facilities, and the meetings with employees/ managers Seminars were given on topics such as fuels, services and new reactors, as well as non-engineering subjects such as professional development, finance, and marketing These presentations gave me a glimpse into various roles of GEH employees at this site

I also had the opportunity to spend time on the beaches around Wilmington, relaxing, swimming, fishing, kayaking, surfing, and playing beach games like sand volleyball Many other activities were possible too, such as: tennis, golf, and other sports In addition, I had a chance to visit Washington DC with a unique tour hosted by GEH