Girvin 2

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Saskatchewan Institute of Applied Science and Technology *

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102

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English

Date

Apr 3, 2024

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docx

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15

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1 Saskpolytechnic Palliser Campus TECHNOLOGY Course # Hydro 221 Project 2 Water Pumping System Design __________________________________________________________________ Date Project Submitted: July 13th, 2015 Civil Engineering Technology Table Of Contents Pg 1 – Title Page
2 Pg 2 – Table of Contents Pg 3 – Introduction, Water Distribution System Design Pg 4 – Water Distribution System Design Continued Pg 5 – Water Distribution System Design Continued Pg 6 – Flow Requirements Pg 7 – System Curve Pg 8 – Pump Selection Pg 9 – Pump Selection Continued Pg 10 – Pump Suction Negative Pressure Cavitation Pg 11 – Pump Suction Negative Pressure Cavitation Calculations Pg 12 – Discussion Questions Pg 13 – Ampco Pumps Company Pump Data Sheet Introduction
3 The objective of this lab is to design a water distribution system including pumps for the town of Girvin, Sk. The system is designed to supply the entire town as well as a cattle feed lot 2km west of town along highway 749. The system will be able to provide pressures in the 200kPa to 450kPa range and is not required to provide fire flow. The design uses two pumps each capable of providing full flow requirements individually for redundancy. Water Distribution System Design Water Distribution System Design Continued
4 The water system was designed using PVC (Blue Brute) pipe for underground applications, the reservoir for this system is located 500m from the town of Girvin Saskatchewan north along the highway. A feed lot is also supplied 2km west along highway 749. A 250mm steel suction line feeds the pump for increased resistance to cavitation pressure. Two centrifugal pumps run in parallel, one being used as a primary capable of supplying the peak day demand of 1430m 3 /day, the other fully operational for redundancy and maintenance operations. The lines off the pumps are 200mm PVC with check valves to stop back flow. The lines tee into a single 200mm PVC main water line that feeds the system. Once the 200mm main water line reaches the town of Girvin at the North West corner, a tee splits the supplies to the feed lot and the town. The line to the feed lot is 200mm PVC and runs along the West edge of town to highway 749 then follows the highway 2km to the feed lot. The main pipe entering Girvin is a 150mm PVC that connects to three 50mm PVC lines that will equally distribute water across the entire Village of Girvin via 50mm PVC lines. No lines have an abrupt end allowing for flow from both directions to demands. Elevations from the reservoir (605.5m) and pumps (607.5m) drop into the town of Girvin the lowest point being the South East Corner (601m), this is the point of greatest pressure (450 kPa) and max hydraulic head was monitored at this point. The Feed lot (616m) was the point of least pressure (200kPa) and lowest hydraulic head was monitored at this point. Water Distribution System Design Continued
5 All the lines were sized for 2 distinct purposes, 1) to limit head losses and ultimately allow enough pressure to the feed lot utilizing a single pump. 2) Reduce max velocity below 2m/s respectively the highest water use scenario and preventing any damage to the system from transient flows (hammer and column separation).
6
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