Reactor Pulsing Laboratory Report University Of W Isconsion/Ne 506 Research Paper

2746 words - 11 pages

University of Wisconsin-Madison
NE 428 Nuclear Reactor Laboratory
Reactor Pulsing
Gianni Nelson
April 30, 2018
Abstract
In operating power reactors, the neutron population generates a large amount of heat. This causes the temperature of the system to change in addition to its material densities, due to thermal expansion. Due to macroscopic cross sections being proportional to densities and temperatures, neutron flux spectrum depends also on the density of moderator, these changes in turn will produce some changes in reactivity. An important parameter in determining the operational characteristics and safety of nuclear reactors is the temperature coefficient of reactivity (). This parameter is important in reactor design, because the reactivity feedbacks influence the stability of the reactor. It will in addition assist in assuring appropriate reactor power boundaries so that the reactor does not reach supercritical (>1).
The temperature effects on reactivity in the University of Wisconsin-Madison Nuclear Reactor (UWNR) are studied while at a supercritical state. The UWNR was pulsed with multiple reactivity insertions, this defines conditions which establish stable heat generation. The delayed neutron fraction (), and the prompt neutron lifetime (lp) assist in determining the performance of a pulsating reactor.
Pulsating the reactor requires a large amount of energy which needs to be produced in a short period of time. The Fuchs-Nordheim model is used to quantitatively predict this reactor power during transient. Using this model, it is assumed that the delayed neutron effect can be neglected, and the reactor is adiabatic. Under these assumptions the period, pulse width, asymptotic period, peak power, and total energy released were measurements obtained from the power trace data. The Fuchs-Nordheim model of reactivity feedback of the prompt neutron lifetime and the negative temperature coefficient of reactivity was computed. Two methods of the Fuchs-Nordheim model were used to calculate the negative temperature coefficient. These models produced values which were relatively close 118.9 C and 119.26C. The computed values for the delayed neutron fraction and the prompt neutron lifetime were fairly close in comparison to the theoretical values of 0.007 and second presenting an error of less than 8%. The Fuchs-Nordheim model proved to be valid, as it qualitatively provided information about reactor pulses.
Introduction
The focus of this experiment is to determine two parameters, the prompt neutron lifetime (lp) and energy coefficient of feedback reactivity (). The Fuchs-Nordheim model of reactivity is used to determine these parameters, in addition to the negative temperature coefficient ().
The assumptions used to complete this model are accomplished due to the reactor self-limiting power excursion, which occurs during a short period of time.
It is assumed that all heat loss is negligible (adiabatic approximation), the resulting change in...

Other Essays On Reactor Pulsing Laboratory Report - University of WIsconsion/NE 506 - Research Paper

Research Paper Database Management Systems - MIS Howard University - Research Paper

3134 words - 13 pages 1 DATABASE MANAGEMENT SYSTEMS (DBMS) Database Management Systems (DBMS) How they affect our everyday life. Xavier Edwards Howard University Management Information Systems 001-01 Dr. Agarwal October 31, 2018 Abstract A database is a structured set of data held in computer or software, especially one that is accessible in various ways. Databases have been in existence since the early 1960s; however, the most universally used type of database was

Augmented Reality Research Paper - West Chester University, IST - Research Paper

1034 words - 5 pages Augmented Reality and Video Games Augmented Reality and Video Games Abstract This paper is about views in Augmented Reality and video games. The advancements of entertainment and types of games with Augmented Reality are presented. These topics are then analyzed by the technology usage, and genre. Augmented Reality is an interactive experience of a real-world environment where the objects that reside in the real-world are "augmented" by computer

the Offering of Physical Education Courses at the University Level - Alcorn State University PE 328: Motor Development - Research Paper

588 words - 3 pages Class name:  PE 328: Motor Development Student’s name: Lazarius Willis Date reflective paper turned in:    1/24/18 Reflective paper number: 1 of 4 I Support the Offering of Physical Education Courses at the University Level Physical Education build up understudies' physical skill and information of development and wellbeing, and their capacity to utilize these to perform in an extensive variety of exercises related with the advancement of a

The Antecedents, Facilitators and Consequences of Parasocial Relationships - University of Toronto/PSY424 - Research Paper

3941 words - 16 pages ; secondly, what processes and media use over time would facilitate PSR between media user and media figures; thirdly, how PSI might, as its originators put it, be “integrated into the matrix of usual social activity” (Horton & Wohl, 1956) and what impact would it bring. This paper attempts to answer the above questions by reviewing existing literatures and give suggestions for future research directions on the topic. Literature Review 1.1

socail media effects on romantic relationships - University Of South Alabama, fundimentals of communication research - Reseach paper

1815 words - 8 pages , solidarity, transparency, cheating etc. In this paper, the role that social media plays on romantic relationships is investigated. This study is hypothesized that social media can have negative and positive impacts on romantic relationships. The following literature reviews have attempted to demonstrate and support this hypothesis. Cizmeci, E. states the use of a mobile device can sum up to be a good thing. When trying to maintain a

Theory to Practice - First-Generation College Students - University of Wisconsin Oshkosh/Theory Class - Research Paper

3471 words - 14 pages population. Problem The 2018 Trends Report discusses the issue FGCS face when attending post-secondary education. According to this report by Dr. Cynthia Teniente-Matson, President of Texas A&M University (TAMU) at San Antonio, FGCS should be immersed in a program before the school semester starts (2018). As stated by Dr. Teniente-Matso, the program should focus on coaching the students on personal, social, and academic success. Furthermore

An Analysis of How Adolescents Form Friendships - University at Albany - Research Paper

1927 words - 8 pages attractiveness plays and the perception of attractive people when regarding friendship “Physically attractive people are judged to be kinder, stronger, more outgoing, more interesting, more exciting dates, more exciting, nurturing, and better people.” (Roberts-Griffin 4). Those who are attractive are generally treated better and more popular due to the association with desirable traits. The research attributes friendship formation to proximity

Effectiveness of UN Peace Enforcement over UN Peacekeeping operations - Baylor University 2018 - Research Paper

2462 words - 10 pages ceasefires and support of pre-existing peace negotiations.[footnoteRef:2] In addition, the Brahimi report states the three foundational principles upon which all UN peacekeeping operations should be structured, which are “consent of local parties, impartiality, and the use of force only in self-defense.”[footnoteRef:3] However, there has been a change in the types of UN peacekeeping operations since the end of the Cold War. They have more often been

Affect of Climate Change on the Giant Panda - Barry University - Research Paper

1330 words - 6 pages Affect of Climate Change on the Giant Panda Chundavi Lalloo October 26,2018 Bio 216 Section 01 Term Paper When one thinks about animals, the first kind to come to mind are the cute and cuddly ones versus the scaly frightening ones. Unfortunately, we tend to be more focused on their looks and actions rather than what is truly important, which is, their well-being. The average adult most likely doesn’t know what’s happening to some of the

Performing Vocal Music of the Renaissance - University of Mississippi - Introduction to Music Research (Graduate Level) - Research Paper

2309 words - 10 pages Culpepper 2 Richard Culpepper 8 December 2016 Dr. Thomas Peattie Final Research Paper Performing Vocal Music of the Renaissance Music has existed for thousands of years, if not longer. The earliest musical notation known to date is from a cuneiform tablet created ca. 2000 BC, found in modern day Iraq in the 1960s.[footnoteRef:1] The oldest known musical instruments are even older than that. At an age of ca. 40,000 years old, four carved-bone

Borderline Personality Disorder: A Growing Concern - University of Central Oklahoma/sophmore - Research Paper

2578 words - 11 pages Running head: BORDERLINE PERSONALITY DISORDER: A GROWING CONCERN 1 BORDERLINE PERSONALITY DISORDER: A GROWING CONCERN 10 Borderline Personality Disorder: A Growing Concern Dillon Magness The University of Central Oklahoma Abstract Ever since borderline personality disorder (BPD) was added to the DSM-III in 1980, a great deal of research and studies have emerged on this illness. BPD is a mental illness that tends to mimic other traits of

Similar Papers

Research Report About The Correlation Of Age And Gender Murdoch University Research Report

1797 words - 8 pages 9 Running head: AGE-RELATED INCREASE IN EMPATHY Age and Empathy: A longitudinal study of age-related increase in empathy Shannen Chiw CT0308083 University of Murdoch AGE-RELATED INCREASE IN EMPATHY Abstract Empathy is a psychological and motivational ability to sense others’ distress. Empathy is defined as comprehending and sharing the sentiments of another. In this report, it will begin with the discussion of the increase in empathy with the

The Economics Of University Accessibility Ap Seminar Research Paper

1380 words - 6 pages Rahman who are research students from MABE, took data from the Canadian Labour Force Survey and discovered that higher tuition levels in the 1990s did in fact reduce the probability of university participation of persons aged 17-19 (Johnson, 2005). Furthermore, university applications are getting more and more competitive; which minimizes the possibility of acceptance and scholarship opportunity. Our main question is, are students restricted to

Arabic Architecture And Influence University Of Colorado Boulder Research Paper

2482 words - 10 pages no doubt that it influenced early modern Europe and, therefore has relevance in today’s world. Specifically, European art and architecture borrow heavily from the Islamic world. As seen in this paper, the pointed, four-centered, and horseshoe arch that are evident in most of the ancient buildings in Europe borrow heavily from Islamic architecture. The same can be said about domes. In addition, music, decorative art, ornament style and carpets all

The Report Of Mini Venture (Selling Used Textbooks) Saint Mary’s University Research Papers

1318 words - 6 pages 1 Saint Mary’s University The Report of Mini Venture (Selling Used Textbooks) 2 Introduction: My name is Hassan Ahmed AL-Hussain the first year business student in Saint Mary’s University. It is not the first time for me to work in business failed especially the small business. I used to work in several areas of business with my family, but the challenge that i have with this venture is dealing with price, because through the time i have worked