Engineering Design Manual - Loudoun Water

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Chapter 9: Sewage Pumping Stations L = ND√P 7400 where, L = allowable leakage in gallons per hour N = number of joints in the length of pipe tested D = nominal inside diameter of the pipe in inches P = average test pressure during the test in pounds per square inch (psi) The hydrostatic test pressure shall be maintained for at least 30 minutes at 100 PSI or 1.5 times the working pressure, whichever is greater, based on the elevation of the lowest point in the line under test, and shall be corrected to the elevation of the test gauge. The tester shall ascertain the specific working pressure of the force main from the design engineer. Visible leaks shall be satisfactorily repaired regardless of the amount of allowable leakage. 9.9 Materials The design engineer shall follow the Loudoun Water SCADA and control system standards and Approved Materials List when specifying materials and equipment with the following additions and exceptions: Suction Lift Pumping Station: Gorman-Rupp Co. Pumps: Flygt Comminutor: Channel Monster type by JWC Environmental Isolation Valves in Wet Well/Dry Well Stations: DeZurik or Val-Matic Plug Valves Chemical Injection Equipment: Siemens, Bioxide Odor Control with NBox Controller Pump Control Valves (swing check): Mueller or Golden Anderson Magnetic Flow Meter: Badger Check Valves: American Flow Control, GA, or APCO Engine/Generator Set: Cummins, Onan, Catepillar, or Kohler Submersible Level Transducer: Contegra Model SLX100, PSI Ltd. Series 750 KPSI Wet Well Coating Systems: Agru Sure Grip HDPE Concrete Protective Liner Automatic Air Release Assemblies: ARI D-020, Gate Valves: Mueller, American Flow Control, or Kennedy/Clow/M&H Engineering Design Manual September 2010 156
Chapter 9: Sewage Pumping Stations Plug Valves: DeZurik or Val-Matic Wet Well Mixer: Flygt Flush Valves, Flygt 4620 Submersible Mixer Access Cover: Flygt Safe Hatch, Bilco or Halliday Programmable Logic Controller (PLC): acceptable SLC 5105 preferred; Micrologix 1500 PLC Sump Pumps: Zoeller 98-0006, Model M98-B Electrical Transfer Switch: Eaton or Cutler Hammer Auto Dialer: Racco Variable Frequency Pump Drive: Allen-Bradley 9.10 Miscellaneous Supplies These miscellaneous supplies are to be furnished with the station: brooms (1 push, 1 regular) and dustpan squeegees (2) mop and mop bucket with wringer 50 feet of 5/8-inch heavy duty hose with fire hose type nozzle (2), with hose reel (outside near hose bib) and hose hanger (inside near hose bib) step ladder (sized to reach interior light fixtures) extension ladder (sized to access wet well with 3 feet of ladder above top of slab, stored on wall hangers on outside of building – mounted out of view of the general public industrial grade storage cabinet (general purpose, 48” W x 78” H x 24” D or equivalent) fire proof cabinet (30 gallon or equivalent) single pedestal desk with chair; 2-drawer file cabinet; cordless phone with answering machine; bulletin board (combo: ½ dri-erase, ½ cork) 55 gallon trash can with lid and dolly 50 feet of 12 gauge electrical extension cord paper towel dispenser and soap dispenser (near sink) streamlight lightbox (color: yellow, Model SQ-FL-45109) Engineering Design Manual September 2010 157
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Engineering Design Manual September
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TABLE OF CONTENTS PAGE Chapter 1: L
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TABLE OF CONTENTS PAGE Chapter 4: W
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TABLE OF CONTENTS PAGE Chapter 7: C
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TABLE OF CONTENTS PAGE L. Controls
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Chapter 1: Loudoun Water’s Role C
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Chapter 1: Loudoun Water’s Role A
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Chapter 1: Loudoun Water’s Role T
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Chapter 1: Loudoun Water’s Role 1
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Chapter 1: Loudoun Water’s Role c
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Chapter 1: Loudoun Water’s Role S
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Chapter 1: Loudoun Water’s Role F
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Chapter 2: Administration 2.1 Exten
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Chapter 2: Administration Developed
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Chapter 2: Administration C. Protec
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Chapter 2: Administration B. Bond R
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Chapter 3: Application and Plan Pre
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Chapter 4: Water Distribution Chapt
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Chapter 4: Water Distribution Resid
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Chapter 4: Water Distribution deten
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Chapter 4: Water Distribution d. Wi
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Chapter 4: Water Distribution Figur
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Chapter 4: Water Distribution 5. Co
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Chapter 4: Water Distribution 14. L
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Chapter 4: Water Distribution B. Me
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Chapter 4: Water Distribution D. Cr
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Chapter 4: Water Distribution 7. Pi
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Chapter 4: Water Distribution 3. Wh
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Chapter 5: Wastewater Collection 2.
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Chapter 5: Wastewater Collection mo
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Chapter 5: Wastewater Collection B.
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Chapter 5: Wastewater Collection is
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Chapter 5: Wastewater Collection C.
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Chapter 5: Wastewater Collection Pr
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Chapter 5: Wastewater Collection Ma
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Chapter 6: Reclaimed Water Chapter
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Chapter 6: Reclaimed Water 5. Adjoi
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Chapter 6: Reclaimed Water 13. Valv
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Chapter 6: Reclaimed Water 2. Provi
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Chapter 6: Reclaimed Water B. Reuse
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Chapter 6: Reclaimed Water 6.6 Cros
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Chapter 6: Reclaimed Water A. Excav
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Chapter 6: Reclaimed Water 2. All l
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Chapter 7: Community Water Systems
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Page 118 and 119: Chapter 7: Community Water Systems
Page 120 and 121: Chapter 8: Community Wastewater Sys
Page 139 and 140: Chapter 9: Sewage Pumping Stations
Page 167: Chapter 9: Sewage Pumping Stations
Page 171: Appendix A Appendix A: Application
Page 175 and 176: Checklist for Construction Plans PR
Page 177: Sewer - Plan View 1st sub. 2nd sub.
Page 180 and 181: Item Description Quantity Unit Unit
Page 183: Appendix B Appendix B: Wastewater C
Page 186 and 187: Sanitary Sewer Minimum Core Separat
Page 189 and 190: I. Introduction The Loudoun County
Page 191 and 192: C. Approval The easement plat and d
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Page 196 and 197: Community Systems Design Review Pro
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Page 200 and 201: Community Systems Project Initiatio
Page 202 and 203: Community Systems Construction Proc
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Page 206 and 207: Community Systems Preconstruction C
Page 209 and 210: I. Corrosion Control All storage ta
Page 211 and 212: i) The depths of soil samples colle
Page 213 and 214: Class 2 pipelines in moderately cor
Page 215 and 216: with cable cutters. Remove the insu
Page 217 and 218: 4. Pipeline station numbers for wir
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a. name of the Corrosion Technician
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voltmeter with a test lead. Obtain
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Table 1 Cathodic Protection Test Da
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Table 3 Linear Continuity Calculati
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Table 5 Field Electrical Isolation
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Appendix F Appendix F: Construction
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Engineering Design Manual - Loudoun Water

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