ENME 622 PIPELINE PUMP AND COMPRESSOR STATIONS Winter 2023 Paper R1 (2)

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University of Calgary *

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Mechanical Engineering

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Jan 9, 2024

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ENME 622 Winter 2023 R1 HS Page 1 of 2 ENME 622 PIPELINE PUMP AND COMPRESSOR STATIONS Winter 2022 Paper – April 18 2023 Submission Deadline The paper study consists of 2 parts, RCFA case study and a research topic. Please address both topics in a single paper. 1. RCFA case Study How would you proceed with the Failure analysis Background: Consider an ABC natural gas compressor station in Canada that has an installed natural gas centrifugal compressor driven by an aeroderivative gas turbine, the free power turbine is close coupled to the gas compressor. The gas compressor is equipped with a standard dry gas seal system. Gas compressor – Turbine units along with all the auxiliary system is housed in a compression building. The gas turbine has accelerometers installed closer to the bearings in 3 locations, Power turbine and Compressor have proximity probes installed on their bearings. All the maintenance program on this station is upto date, with no known issues from the past. The station is in service for about 5 years, running at a very high load factor. Scenario: There was a call out to the station operations because the gas turbine unit cannot be restarted. The most likely cause of the shutdown from the alarm history was a high vibration on one of the sensors on the gas turbine. Once the operator cleared the alarm, the gas turbine unit again shut down on high vibration upon attempted restart, What would you do in a scenario like this, how would you approach the restart? Would you attempt the restart again? If you were to set up an RCFA investigation, what steps would you follow, what are the questions you would ask that are relevant. How would you go about finding the root cause of this issue? The evaluation criteria for this would be on how succinctly the RCFA is set up, methodology applied, applied knowledge of what you learnt in the course, what systems can go wrong, possible causes of the high vibration, decision to attempt the restart and next steps. This is a realistic scenario, where you will not have a lot of information when an incident happens and they are real commercial demands that needs a decision if the unit can be restarted or if a replacement needs to be planned , this exercise will evaluate your approach and how you set up the RCFA to arrive at the root cause, follow any of the RCFA methods you are familiar with ( use reference papers as a guide posted D2L). As suggestion use a bow tie diagram, or a develop checklists, use any techniques to help you. Try to keep this section within 10 pages. There is no real limit, just a guideline. 2. Research on introducing H2 into Natural Compressor Stations Numerous government initiatives and changes in regulations across the world are targeting drastic reduction in Green House Gas Emissions. Pipelines are also required to meet these stringent targets in GHG emissions. One of the upcoming areas within Natural gas Transmission is introduction of H2 into the existing Natural Gas Systems in the interest of offsetting GHG emissions and as an effective energy storage medium.
ENME 622 Winter 2023 R1 HS Page 2 of 2 With this context each of the students is expected to Conduct your research on issues that need to be addressed when H2 is introduced into the Natural Gas Compressor Stations. Keep your research limited to the major equipment like the compressors, Turbines, Motors, and their auxiliaries. Methodically research the different issues and come up with your own analysis of how we can address the issues. Try to keep this section to be around 10 pages of content in length. Try to use good report writing style with a title page, table of contents, headings, and a bibliography at the end for your references. Don’t just copy and paste what you find on the internet. All direct copies have to be put in quotes “..” and need to be referenced properly. The evaluation would be based on all the elements of how well the topic is researched, presented in a report, clarity and individual analytical thought. Submissions through D2L Drop Box
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