NE201
Homework 9
(100 points) Using the Six Factor Formula, determine the radius of a bare infinite
cylindrical reactor that has the following characteristics:
a. Homogeneous
b. 95% enriched 235U and Graphite(12C) mixture (ignore 234U)
c. Uran
NE201
Homework 3
1. (10 points) The International Space Station orbits the earth with an orbital velocity of
27,600km/hr. Determine the percent increase in weight of a 180lb astronaut aboard the ISS due t
NE201
Homework 8
1. (35 points) Consider a homogeneous reactor consisting of some amount of
enriched uranium metal and some amount of water. The reactor can be
considered a slurry with perfect mixing. The following parameters are given:
= 1.04
NE 201
Homework 2
(100 pts total)
For these problems you will find the information you need for the calculations in the tables in the
Appendices of your textbook, and/or the Chart of the Nuclides or Periodic Table (online).
1. Determine the following: (20
NE 201
Homework 1
(50 pts)
A large conversion to electric powered cars requires an electric power infrastructure to support it. New
electric power plants would be required to provide the electricity to recharge this fleet of electric cars. To
get the full
NE 201
Homework 4
1. (20 points) Using information from the Chart of the Nuclides, your textbook
and/or the Periodic Table, determine the decay constant and the mean
lifetime of the following nuclides:
a. Na-24
b. Fe-59
c. Ar-41
d. I-131
2. (20 points) Wh
NE201
Homework 6
1. (50 points) In my previous career we dealt with many possibilities for
activation of materials that could then become a radiation hazard. In some
areas paint with Zn (Zinc) additive is used for corrosion protection. However,
64Zn has a
NE201
Homework 5
1. (40 points) On average, how many elastic scattering reactions are required to
slow down 1 Mev neutrons to thermal energy (0.025 ev) in the following
nuclides:
a. 7Li
b. 27Al
c. 208Pb
d. 235U
2. (20 points) 16N is a radioactive isotope
NE201
Homework 7
1. (5 points) Electromagnetic radiation in the form of gamma radiation is
observed to have a wavelength of 1.0 pm (picometer). What is the energy in
Mev of the gamma radiation.
2. (20 points) Determine and the mean free path for 1Mev gamm
NE201
Homework 10
1. (35 points) For a reactor fueled with 233U, with a change in keff from 1.0 to
1.001, show the difference in the increase in neutron population without and
with the effect of delayed neutrons. You will need to determine a value
NE 404/504
Fall 2015
Prof. Azmy
September 15, 2015
Homework Set # 3
Due September 22, 2015
1. Show that an inelastic neutron scattering collision cannot occur unless the incident
A +1
neutron energy exceeds
E x ,1 where A is the atomic number of the scatt
GEIGER-MLLER DETECTORS
DATE PERFORMED: 2-11-2013
DUE DATE:
2-25-2013
NAME:
CAROLINE KELLER
PARTNERS:
ANDREW CHURCH, SETH BAYLER
INSTRUCTOR:
DR. AYMAN I. HAWARI
TEACHING ASSISTANT: ZIYU XIAO, LEVON KEUSSEYAN, AND NIKITA SUPONYA.
ABSTRACT
The Introduction a
Operating parameters for a PWR hot channel is given below. Compute and plot the mixture and phase velocity distributions. Determine the individual components of and the total pressure drop. Compare the results obtained using both equilibrium and non equil
Operating parameters for a representative BWR design is given below. For the BWR average channel compute and plot the mixture and phase velocity distributions. Determine the individual components of and the total pressure drop. Compare the results obtaine
A number of simple models have been proposed for the modeling of two-phase systems. These include the assumption of homogeneous flow where the phases velocities are assumed to be equal, and an equilibrium model where both phases are assumed to be at therm
A PWR has dimensions and operating conditions given below.
Core Thermal Output Fuel Height Rod Pitch Outer Clad Diameter Power Peaking Factor Axial Peak to Average Ratio Number of Fuel Rods Energy Deposited in Fuel Core Inlet Loss Coefficient Core Exit Lo
A reactor coolant system consist of the reactor vessel, two hot legs, two steam generators, four cold legs and four reactor coolant pumps as illustrated below. For the given data: a) Determine the total system flow rate b) Assuming one of the reactor cool
A natural circulation test loop is heated at point a and cooled at point b as illustrated below. The total effective loss coefficient for the cold leg is 0.8 (including friction). The total effective loss coefficient for the hot leg is 1.0 (including fric
A PWR has dimensions and operating conditions given below. Core Height Core Mass Flux Number of Fuel Rods Rod Diameter Rod Pitch Core Inlet Loss Coefficient Core Exit Loss Coefficient Grid Loss Coefficient Number of Grids Pressure Core Inlet Temperature M
Determine the pressure drop across the steam generator illustrated below. You may assume flush inlet loss coefficients from the inlet chamber to the steam generator tubes, and from the outlet chamber to the cold legs. You may assume flush outlet loss coef
A simple representation of a feed train for a two-loop PWR is given below. For the given data, (a) determine the flow rate through each of the feed lines. Note, loss coefficients K1 and K3 are referenced to the velocity associated with the combined flow r
A piping network is illustrated in the figure below. Water is pumped from a reservoir via two identical, parallel pump trains to a point characterized by a discharge pressure Pdis. A static sight tube is located at a point along the discharge line. a) Dev
Pump storage units pump water from a lower to upper reservoir during off peak hours when electricity is cheap, to be released through hydroelectric turbines during peak demand periods. The pumped portion of such a facility is illustrated below. Assuming t
A uniformly heated rod bundle has operating characteristics given below. The critical heat flux mechanism is dryout, and can be correlated by the Hench-Levy correlation as
1. . = 19 3.3x c 0.7 tanh 2 (3G / 10 6 ) 6 10 0.6 0.7 x 0.09 tanh 2 (2G / 10 6 ) c
The hot channel in a PWR operates under the conditions given below. Problem Parameters Maximum channel heat flux Channel Mass Flux Inlet Temperature Channel Pressure Rod Pitch Rod Diameter Rod Height Axial Peak to Average Ratio 474,500 2.48 x 106 552 2250
A boiling channel has operating characteristics listed below. Assuming the heat flux profile is
z q( z ) = q0 sin H
Determine the critical power ratio in the channel using both the Hench-Levy and CISE-4 correlations. You may assume for the Hench-Levy cor
The hot channel in a PWR operates under the conditions given below. Compute and compare the outer clad temperature distribution assuming the Jens-Lottes and Thom correlation in the nucleate boiling region and the Bergles and Rosenhow correlation in the mi
For the BWR operating parameters given below, compute and plot: a) The clad surface temperature assuming the Jens-Lottes Correlation b) The clad surface temperature assuming the Thom Correlation c) The clad surface temperature assuming the Chen Correlatio