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CS 188 Spring 2023

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ME 274: Basic Mechanics II

Data science hwk.

DISCUSSION THREAD

NOTE If you have problems using the Jupyter notebook link found in the problem statement above, try the following link: https://colab.research.google.com/github/ebilionis/core-me-data-science-activities-public/blob/master/me274/activity_01.ipynb

18 thoughts on “Data Science Hwk”

I'm not able to access the link to the google collab or the dropbox. What can I do about it?

Opening the link using google chrome will allow you to see and edit the notebook. Other browsers like firefox and edge will give you the error.

Can you provide some details on this? Do you get an error message when you try to access? If so, what does the message say? Any details would be helpful.

I do indeed get an error message when I try to access them. The google Collab gives me the following error:

Notebook not found There was an error loading this notebook. Ensure that the file is accessible and try again. Ensure that you have permission to view this notebook in GitHub and authorize Colaboratory to use the GitHub API.

https://github.com/ebilionis/core-me-data-science-activitiespublic/blob/master/me274/activity_01.ipynb

Also, the dropbox gives me the following error: That didn't work for some reason If it's a fluke, it might work if you refresh the page. You can also ask us for help.

Thanks for the information. We have heard from one person that not all browsers work well with the link. Chrome was identified as one that does work. Give that a try, and let us know.

Thank you for that information. I've been using google chrome, and it wasn't working. However, using Incognito mode on chrome allowed me to access the file. I don't know why that worked, but it did.

Good to hear that it works. Thanks for getting back on this.

There appears to be an issue with some of the print statements so you may need to rewrite some of the code. Also, try changing the variables used in the frequency statement (involving <) to find the frequency that values fall below your max speed with the inputted speed limit.

While completing the python task I found that there are some parts that need an equation changed to match that of what was solved in the textbook. I also noticed that most of the print statements don't work so I deleted them and rewrote them in a correct format. I was able to find print statement examples online.

Disregard the comment about the equations.

For question 10 we are given the values for the radius of curvature as 200 m and the angle to be 10 degrees. We can use the code from before to find the max speed around the corner. But we need data to find a speed limit where 99 percent of people will follow that. How are we supposed to get the data as the data we have is only for 100 m but the same angle of 10 degrees?

To confirm, the speed limit for question 10 will have to be selected from the existing 10 kph values in the data set? Additionally, for questions 6 and 7 is it reasonable justification to choose a value that would result in being below the maximum speed limit 75% of the time?

Anyone else having a problem getting it to save as a pdf? Every time I try and save it as a pdf it either: 1) doesn't load the graphs, 2) doesn't load all the code.

Hi, I am also facing the same issue. Is there a fix for it, or is it ok to screenshot and submit as pdf?

Me too, also there is no question 8 on the hw, so what do we do with matching question 8 on gradescope?

Just wanted to let you all know that both the videos under the additional resources are the same, the dropbox and youtube, and that the youtube one worked for all the browsers I had.

What data should we use for question 10?

Whenever I try to save my document as a PDF, the code and graph I have for Question 10 either cuts of or displays really weirdly. What have people done to successfully save this?

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Purdue University

For the first time Rosatom Fuel Division supplied fresh nuclear fuel to the world’s only floating nuclear cogeneration plant in the Arctic

The fuel was supplied to the northernmost town of Russia along the Northern Sea Route.

The first in the history of the power plant refueling, that is, the replacement of spent nuclear fuel with fresh one, is planned to begin before 2024. The manufacturer of nuclear fuel for all Russian nuclear icebreakers, as well as the Akademik Lomonosov FNPP, is Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC), a company of Rosatom Fuel Company TVEL that is based in Elektrostal, Moscow Region.

The FNPP includes two KLT-40S reactors of the icebreaking type. Unlike convenient ground-based large reactors (that require partial replacement of fuel rods once every 12-18 months), in the case of these reactors, the refueling takes place once every few years and includes unloading of the entire reactor core and loading of fresh fuel into the reactor.

The cores of KLT-40 reactors of the Akademik Lomonosov floating power unit have a number of advantages compared to the reference ones: a cassette core was used for the first time in the history of the unit, which made it possible to increase the fuel energy resource to 3-3.5 years between refuelings, and also reduce the fuel component of the electricity cost by one and a half times. The FNPP operating experience formed the basis for the designs of reactors for nuclear icebreakers of the newest series 22220. Three such icebreakers have been launched by now.

For the first time the power units of the Akademik Lomonosov floating nuclear power plant were connected to the grid in December 2019, and put into commercial operation in May 2020. The supply of nuclear fuel from Elektrostal to Pevek and its loading into the second reactor is planned for 2024. The total power of the Akademik Lomonosov FNPP, supplied to the coastal grid of Pevek without thermal energy consumption on shore, is about 76 MW, being about 44 MW in the maximum thermal power supply mode. The FNPP generated 194 million kWh according to the results of 2023. The population of Pevek is just a little more than 4 thousand, while the FNPP has a potential for supplying electricity to a city with a population of up to 100 thousand people. After the FNPP commissioning two goals were achieved. These include first of all the replacement of the retiring capacities of the Bilibino NPP, which has been operating since 1974, as well as the Chaunskaya TPP, which has already been operating for more than 70 years. Secondly, energy is supplied to the main mining companies in western Chukotka in the Chaun-Bilibino energy hub a large ore and metal cluster, including gold mining companies and projects related to the development of the Baimsk ore zone. In September 2023, a 110 kilovolt power transmission line with a length of 490 kilometers was put into operation, connecting the towns of Pevek and Bilibino. The line increased the reliability of energy supply from the FNPP to both Bilibino consumers and mining companies, the largest of which is the Baimsky GOK. The comprehensive development of the Russian Arctic is a national strategic priority. To increase the NSR traffic is of paramount importance for accomplishment of the tasks set in the field of cargo shipping. This logistics corridor is being developed due regular freight voyages, construction of new nuclear-powered icebreakers and modernization of the relevant infrastructure. Rosatom companies are actively involved in this work. Rosatom Fuel Company TVEL (Rosatom Fuel Division) includes companies fabricating nuclear fuel, converting and enriching uranium, manufacturing gas centrifuges, conducting researches and producing designs. As the only nuclear fuel supplier to Russian NPPs, TVEL supplies fuel for a total of 75 power reactors in 15 countries, for research reactors in nine countries, as well as for propulsion reactors of the Russian nuclear fleet. Every sixth power reactor in the world runs on TVEL fuel. Rosatom Fuel Division is the world’s largest producer of enriched uranium and the leader on the global stable isotope market. The Fuel Division is actively developing new businesses in chemistry, metallurgy, energy storage technologies, 3D printing, digital products, and decommissioning of nuclear facilities. TVEL also includes Rosatom integrators for additive technologies and electricity storage systems. Rosenergoatom, Joint-Stock Company is part of Rosatom Electric Power Division and one of the largest companies in the industry acting as an operator of nuclear power plants. It includes, as its branches, 11 operating NPPs, including the FNPP, the Scientific and Technical Center for Emergency Operations at NPPs, Design and Engineering as well as Technological companies. In total, 37 power units with a total installed capacity of over 29.5 GW are in operation at 11 nuclear power plants in Russia. Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC, Elektrostal) is one of the world’s largest manufacturers of fuel for nuclear power plants. The company produces fuel assemblies for VVER-440, VVER-1000, RBMK-1000, BN-600,800, VK-50, EGP-6; powders and fuel pellets intended for supply to foreign customers. It also produces nuclear fuel for research reactors. The plant belongs to the TVEL Fuel Company of Rosatom.

Rosatom obtained a license for the first land-based SMR in Russia

On April 21, Rosenergoatom obtained a license issued by Rostekhnadzor to construct the Yakutsk land-based SMR in the Ust-Yansky District of the Republic of Sakha (Yakutia).

ROSATOM and FEDC agree to cooperate in the construction of Russia's first onshore SNPP

ROSATOM and FEDC have signed a cooperation agreement to build Russia's first onshore SNPP in Yakutia.

Rosatom develops nuclear fuel for modernized floating power units

Rosatom has completed the development of nuclear fuel for the RITM-200S small modular reactor designed for the upgraded floating power units.

First refuelling for Russia’s Akademik Lomonosov floating NPP

!{Model.Description}

The FNPP includes two KLT-40S reactor units. In such reactors, nuclear fuel is not replaced in the same way as in standard NPPs – partial replacement of fuel once every 12-18 months. Instead, once every few years the entire reactor core is replaced with and a full load of fresh fuel.

The KLT-40S reactor cores have a number of advantages compared with standard NPPs. For the first time, a cassette core was used, which made it possible to increase the fuel cycle to 3-3.5 years before refuelling, and also reduce by one and a half times the fuel component in the cost of the electricity produced. The operating experience of the FNPP provided the basis for the design of the new series of nuclear icebreaker reactors (series 22220). Currently, three such icebreakers have been launched.

The Akademik Lomonosov was connected to the power grid in December 2019, and put into commercial operation in May 2020.

Electricity generation from the FNPP at the end of 2023 amounted to 194 GWh. The population of Pevek is just over 4,000 people. However, the plant can potentially provide electricity to a city with a population of up to 100,000. The FNPP solved two problems. Firstly, it replaced the retiring capacities of the Bilibino Nuclear Power Plant, which has been operating since 1974, as well as the Chaunskaya Thermal Power Plant, which is more than 70 years old. It also supplies power to the main mining enterprises located in western Chukotka. In September, a 490 km 110 kilovolt power transmission line was put into operation connecting Pevek and Bilibino.

Image courtesy of TVEL

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CS188 sp24 Note翻译及笔记

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CS188 sp24 Note中文翻译

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