• Document: Isolation Works - Inspection Report
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MANAGEMENT ENGINEERING SERVICES CONTRACT FARA 2 – Implementing Non Revenue Water Reduction in DZ 27 Isolation Works - Inspection Report Submission Date: March 21, 2016 Contract Number: AID-278-C-15-00005 Contract Period: March 16, 2015 to March 15, 2018 COR Name: Eng. Louis Qaqish Submitted by: Raid Zraikat, Chief of Party Engicon Amman, Ahmad Bin Hanbal Street Bld. 127 Tel: +96264602120 Email: rzraikat@engicon.com This report was produced for review by the United States Agency for International Development 1 (USAID). It was prepared by Engicon under Contract AID-278-C-15-00005. USAID Non-revenue Water MESC, AID-278-C-15-00005 RevNo 21/03/2016 CONTENTS Contents .....................................................................................................................................2 1. EXECUTIVE SUMMARY ...................................................................................................3 1.1 Introduction .................................................................................................................3 1.2 Report .........................................................................................................................3 1.3 Annexes ......................................................................................................................3 2. INTRODUCTION ...............................................................................................................4 2.1 Project Area ................................................................................................................4 2.2 Project Objective .........................................................................................................5 3. ISOLATION WORKS .........................................................................................................6 3.1 Hydraulic Analysis and Re-districting .........................................................................6 3.2 General Isolation Process........................................................................................ 12 3.3 Isolation Process as Carried out in DZ 27 ............................................................... 12 3.3.1 DZ 27 A1 .......................................................................................................... 13 3.3.2 DZ 27 A2 .......................................................................................................... 15 3.3.3 DZ 27 A3 .......................................................................................................... 16 3.3.4 DZ 27 B ............................................................................................................ 16 3.3.5 DZ 27 D............................................................................................................ 16 3.3.6 DZ 27 E1 .......................................................................................................... 17 3.3.7 DZ 27 E2 .......................................................................................................... 18 4. ANNEXES ....................................................................................................................... 20 4.1 Isolation Pictures ..................................................................................................... 20 4.2 Wet/Dry Test Form: Example for DZ 27 E1 ............................................................. 22 4.3 Shifted Borders ........................................................................................................ 23 4.4 Wet/Dry Test Results Summary .............................................................................. 24 2 USAID Non-revenue Water MESC, AID-278-C-15-00005 RevNo 21/03/2016 1. EXECUTIVE SUMMARY 1.1 INTRODUCTION This report summarizes the isolation process for the Tareq Water Distribution Zone (DZ 27), which is part of the Amman Non-Revenue Water project funded by USAID. The report covers all stages of the isolation process from the design/preparatory work to the successful wet/dry tests that verified that DZ27 and all its districts are now hydraulically isolated. Preparatory work included data collection, detailed distribution zone analysis, main feeders investigation and hydraulic modelling. The needed isolation tasks were implemented by Miyahuna,

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