Contexts subject changewith initiative and judgment planning
Advanced Diploma of Electrical and Instrumentation (E&I) Engineering for Oil and Gas Facilities
| Student full name: | Thabani Bongani Blessing Nhliziyo | |||
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Should the reproduction of all or part of an assessment be required by the EIT for any purpose other than those mentioned above, appropriate authorisation will be sought from me on the relevant form. |
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Please place a tick () in the box below to indicate that you have read, understood, and certify the above statement. |
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| Marks (%) | 66.9% | Satisfactory / |
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| Assessor: | Terry Cousins | Date: | 16/04/2023 | |
| Overall feedback: | Well done Thabani. Please review the material for the questions where you did not get full marks. | |||
How is this module assessed?
After completion of this assessment, you will be given a result of ‘Satisfactory’ or ‘Not Satisfactory’. The assessor will give you feedback via Moodle and you will have an opportunity to submit additional evidence, if you have received a ‘Not Satisfactory’ result.
For a result of ‘Satisfactory’ in this assessment task, all module assessment criteria (as indicated on page 4) must be completed to a satisfactory standard.
Where a critical question is identified, you must receive a mark of 100% for these questions before a ‘satisfactory’ result can be awarded, regardless of the overall mark achieved.
across a broad range of technical or management functions with accountability for personal outputs
personal and team outcomes within broad parameters
Assessment Instructions:
Use this document for completing your answers by typing the answers after each question without deleting the question. Make sure that you preserve the original question number format.
Do not add extra pictures, etc. as annexures; instead, paste them directly into this answer sheet. Hand-drawn sketches can be inserted after scanning but please ensure that the file size does not become big (more than 10 MB). You must refer to all diagrams and pictures, etc. that you have drawn or pasted in.
LO2: Identify the key characteristics of typical equipment and systems for power distribution in oil and gas industries, smart and micro-grids
LO3: Analyse a basic distribution system plan and determine sizing of equipment
SECTION 1: SHORT ANSWERS
| Q1 | List any two reasons on why AC power is preferred for large scale transfer over long distances. | (2 marks) | |||
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| A1 | Student answer |
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| F1 | Assessor feedback: | (marks awarded) | |||
| Q2 | Name any two problems that a consumer can cause to a power system. | (2 marks) | |||
| A2 | Overloading |
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| F2 | Assessor feedback: | (marks awarded) | |||
| Q3 | Classify the following as LV or HV categories (BS and IEC): |
(2 marks) | |||
| A3 |
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| F3 | Assessor feedback: | (marks awarded) | |||
| Q4 | What are the four governing principles of power distribution design / planning? | (2 marks) | |||
| A4 | Student answer |
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| F4 | Assessor feedback: | (marks awarded) | |||
| Q5 | List any four key equipment used on transmission and distribution networks | (2 marks) | |||
| A5 | Student answer Earthing system, transformers, HV and LV distribution equipment and DC supply system |
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| F5 | Assessor feedback: | (marks awarded) | |||
| Q6 | List the four basic functions of substation automation. | (2 marks) | |||
| A6 | Monitoring |
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| F6 | Assessor feedback: | (marks awarded) | |||
| Q7 | What are the two important points to be considered while planning power systems in an oil and gas facility? | (2 marks) | |||
| A7 | Student answer |
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| F7 | Assessor feedback: | (marks awarded) | |||
| Q8 |
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(2 marks) | |||
| A8 | Student answer |
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| F8 | Assessor feedback: | (marks awarded) | |||
| Q9 | Name any two objectives of fault level studies in power systems. | (2 marks) | |||
| A9 |
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| F9 | Assessor feedback: | (marks awarded) | |||
| Q10 | List any two benefits of properly planned distribution systems. | (2 marks) | |||
| A10 | Student answer |
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| F10 | Assessor feedback: | (marks awarded) | |||
| Q11 | List at least two benefits of correctly locating assets. | (2 marks) | |||
| A11 | Maintains proper voltage profile. |
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| F11 | Assessor feedback: | (marks awarded) | |||
| Q12 | List any two problems that can be revealed by load flow simulation software. | (2 marks) | |||
| A12 | Student answer |
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| F12 | Assessor feedback: | (marks awarded) | |||
| Q13 | Name any four important applications of fault level software results in the selection of HV distribution equipment/switchgear. | (2 marks) | |||
| A13 | Circuit breaker selection Switchgear selection |
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| F13 | Refer to Webinar 3, slide 12 | 1 | |||
| Q14 | Name any two aspects studied by sub-transient analysis. | (2 marks) | |||
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| F14 | Assessor feedback: | (marks awarded) | |||
| Q15 | Give two examples of unbalanced faults. | (2 marks) | |||
| A15 | Student answer Single line ground |
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| F15 | Assessor feedback: | (marks awarded) | |||
| Q16 | How can the current be limited in the case of phase to earth fault in a star connected system? | (2 marks) | |||
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| F16 | Assessor feedback: | (marks awarded) | |||
| Q17 | Calculate the short circuit that a conductor can withstand for 0.5 second if the same conductor can withstand 30 kA for 1 second. | (2 marks) | |||
| A17 | 15kA |
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| F17 | Assessor feedback: | (marks awarded) | |||
| Q18 | A circuit with a rated voltage of 250V experiences a voltage drop of 25 Volts. |
(2 marks) | |||
| A18 |
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| Q19 |
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(2 marks) | |||
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| F19 | Assessor feedback: | (marks awarded) | |||
| Q20 |
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(2 marks) | |||
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| F20 | Assessor feedback: | (marks awarded) | |||
| Q21 |
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(2 marks) | |||
| A21 | Student answer |
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| F21 | Assessor feedback: | (marks awarded) | |||
| Q22 | List any two benefits of in-plant generation | (2 marks) | |||
| A22 | Minimize power failure. |
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| F22 | Assessor feedback: | (marks awarded) | |||
| Q23 | List one example each for direct and indirect losses due to power outage. | (2 marks) | |||
| A23 | Student answer |
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| F23 | Assessor feedback: | (marks awarded) | |||
| Q24 |
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(2 marks) | |||
| A24 | |||||
| F24 | Assessor feedback: | (marks awarded) | |||
| Q25 | Why is resistance earthing preferred in systems having larger capacity MV in-plant generators? | (2 marks) | |||
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| F25 | Assessor feedback: | (marks awarded) | |||
| Q27 | (2 marks) | ||
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| A27 |
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| F27 | Assessor feedback: | (marks awarded) | |
| Q29 | What are the two benefits of adding a turbocharger to a Diesel engine? | (2 marks) | |
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| A29 | Student answer |
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| F29 | Assessor feedback: | (marks awarded) | |
SECTION 2: DESCRIPTIVE/LONG ANSWERS
| Q31 | Briefly describe, using a suitable diagram, the entire process of generation, transmission and distribution of electrical power. | (4 marks) | |
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| A31 | Student answer |
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| F31 | Assessor feedback: | (marks awarded) | |
| Q32 | An industry has four major plant sections with the following power consumption data:
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(4 marks) | |
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| A32 | |||
| F32 | Assessor feedback: | (marks awarded) | |
| Q34 | Briefly explain the following:
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(4 marks) | |
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| A34 |
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| F34 | Assessor feedback: | (marks awarded) | |
