S&T Consultancy Expression of Interest ENEE14007 Electrical Machines and Drives Applications S0258080 Samuel Mulhern S0271657 Teri Smith 04/04/2017S&T Consultancy ENEE14007 04/04.2017 Table of Contents Scope of Work 2 Purpose Statement 2 Existing Body of Knowledge: 2 Requirements: 2 Constraints: 3 Key Assumptions: 3 Capability Statement: 3 Sam Mulhern: 3 Teri Smith 4 Deliverables 4 Exclusions 4 Submissions for Debriefing Meeting 5 Quote/Budget 6 Proposed Budget 6 Gantt Chart 7 Work Breakdown Structure (WBS) 7 Works Cited 9 Page|1S&T Consultancy ENEE14007 04/04.2017 1. Scope of Work 1.1. Purpose Statement S&T Consultancy will provide the design and specifications for a pontoon pump system that will be implemented in CQUCoal Surface Operations’ open-cut coal mine. This pontoon pump will be operated using an electric motor coupled to a portable pump starter and will meet all requirements as defined by CQUCoal. 1.2. Existing Body of Knowledge: The use of pontoon pumps is spread across multiple industries due to their adaptability and usefulness in different applications, with particular use in agriculture and mining. In the mining industry, dewatering of both open pit and underground mines is essential and leads to benefits including: reduced downtime as a result of flooding, more efficient dry blasting conditions, lower haulage costs as the weight of the excavated material will be less, increased stability in open pit slope angles (Groundwaterng Engineering, 2013)(Mandzic, 1992). The basic features of a pontoon pump include a floating structure, to which a semi or full submersible pump, protection and control system are mounted (Rainbow Power Company Ltd, 2017). The pump control system utilises a motor starter to ensure that motor is not overloaded or underloaded during operation, and in particular, during start up. One method of motor starting utilises silicon-controlled rectifiers (SCR) in a configuration such that they are able to be controlled to limit the output voltage to the motor. Limiting the voltage in turn limits the generated torque of the motor and the current drawn by the system (Rockwell Automation, 2014). An alternative method of motor control is through the use of a variable frequency drive (VFD). Rather than controlling the motor speed by changing the applied voltage, a VFD controls the speed of the motor by simulating an AC signal using pulse width modulation (PWM). The 3-phase input signal is converted to a DC voltage. A control circuit is used to switch transistors (general IGBT type) connected to the motor phases on and off at a variable rate in such a way that the square wave output is equivalent to an AC sinusoidal wave of a specific maximum amplitude and frequency (Hartman, 2014). 1.3. Requirements: The project will adhere to the following requirements as specified by CQUCoal - Design a portable pump starter and drive system - Couple system to a suitable electric motor and provide specifications - Drive a pontoon pump installed at the CQUCoal Surface Operation - Adhere to all relevant Australian Standards, in particular AS:4871 - Meet hardware requirements outlined in Tender Document Page|2S&T Consultancy ENEE14007 04/04.2017 1.4. Constraints: This project will have limitations which will include - Finish this project by scheduled time of business 2 June 2017 - The availability of resources with only two team members - Following all relevant Australian Standards 1.5. Key Assumptions: For this project, a number of key assumptions will be made: - CQUCoal does not have a preferred component stockist, thus, will be capable of buying the exact components specified in the final project technical report - All specifications presented in CQUCoal Tender Document are taken to be correct and up to date - All components of the final system will be selected to ensure that they operate continuously up to the safety factor as specified in the relevant Australian Standard. If the standard does not specify a safety factor, an assumed safety factor of 1.25 will be utilised. 2. Capability Statement: An efficient pump setup can save companies hundreds of dollars in running costs and maintenance over the course of a year, allowing companies to invest and expand further into new areas. For example, if a site is using Ergon’s “Large Demand Tariff”, savings upwards of $450 per pump can be made for every 5% increase in efficiency (Ergon Energy, 2017). Designing and planning electrical mechanical systems is our speciality and we will collaborate with you to make sure all of your requirements can be met within a set time frame. 2.1. Sam Mulhern: Sam has a background in both mechanical draftsmanship and electrical design. Through work as a draftsman for Expert Laser Solution and Real Time Instruments, Sam has a combined total of over 8 years firsthand experience in designing and working on custom projects to meet the needs of clients. This has included providing both 2D and 3D CAD drawings and precision cut components. Furthermore, Sam has worked on numerous electrical projects while also at Real Time Instruments, such as designing a handheld density scale and work on a conveyor belt belt weighing system. Contact Details: Mobile: 0417782381 Page|3S&T Consultancy ENEE14007 04/04.2017 Email: ​[email protected] 2.2. Teri Smith Teri has experience in both business and electrical engineering. Through work experience at Ergon Energy in her the final years of high school, as well as workshops with The Engineering Link Group through Thiess. Teri has a combined experience in business over 5 years with working in sales and also at accounting firm. This is included dealing and helping with clients needs. Teri was awarded the Women in Engineering Scholarship. Contact Details: Mobile: 0407311937 Email: ​[email protected] 3. Deliverables Through the course of this project, the following deliverables will be outputted to CQUCoal: - Documented response for proposed Scope of Work - Block diagram of overall system - Complete set of electrical drawings, including: - Single line diagram - Incoming and outgoing schematics for the pump starter PS01 - Control Schematics for PS01 - Complete set of mechanical General Assembly (GA) drawings including finalised Bill of Materials (BOM) - Written justification of the selected components supported by calculations and weighted evaluation of alternative components researched - User manual for complete system - Provision of all relevant data sheets for components incorporated within design - Overall project technical report 4. Exclusions This project will not include the following: - The design prototype will not physically prototyped - Implementation of the design will not be included in the final report. - Only the requested section with be included, therefore no more than using an electric motor coupled to a portable pump starter - Supply substation has earth leakage protection installed - Does not need additional earth leakage device Page|4S&T Consultancy ENEE14007 04/04.2017 - PLC will not be use 5. Submissions for Debriefing Meeting As per the project outline presented by CQUCoal, a debriefing meeting will be held between 01/05/2017 and 05/05/2017. This meeting will be used to discuss the progress S&T Consultancy have made on the overall project. At this meeting, the following completed items will be presented to a CQUCoal representative: - Block diagram to give a system overview - Calculations showing the minimum requirements for the machines and control system that will be utilised - The methods of protection that will be utilised and the ways in which they will be implemented - The selected components that will be utilised in the final design and justification for their choice (based upon calculations and weighted evaluation) - Electrical Schematics - Single line diagram - Incoming and outgoing pump starter schematics - Progress on control schematic For further details, please refer to Gantt Chart Item 7 Page|5S&T Consultancy ENEE14007 04/04.2017 6. Quote/Budget Table 1. Proposed Budget Page|6S&T Consultancy ENEE14007 04/04.2017 7. Gantt Chart Table 2. Work Breakdown Structure (WBS) Page|7S&T Consultancy ENEE14007 04/04.2017 Page|8S&T Consultancy ENEE14007 04/04.2017 8. Works Cited Ergon Energy, 2017. ​Large business tariffs. ​[Online] Available at: https://www.ergon.com.au/retail/business/tariffs-and-prices/large-business-tariffs ​[Accessed 30 March 2017]. Groundwatering Engineering, 2013. ​Mine Dewatering, ​Horbury: Groundwater Engineering Limited. Hartman, C., 2014. ​What is a Variable Frequency Drive?. ​[Online] Available at: http://www.vfds.com/blog/what-is-a-vfd ​ ​[Accessed 28 March 2017]. Mandzic, H., 1992. Mine water risk in open pit slope stability. ​Mine Water and The Environment, ​11(4), pp. 35-42. Rainbow Power Company Ltd, 2017. ​Floating Pumps. ​[Online] Available at: http://www.rpc.com.au/solar-systems/solar-pump-systems/floating-pumps.html ​[Accessed 27 March 2017]. Rockwell Automation, 2014. ​When to use a Soft Starter or an AC Variable Frequency Drive, Milwaukee: Rockwell Automation, Inc.. Page|9