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基隆、台中及高雄供水系統降低無收益水量(NRW)計畫總顧問委託技術服務

  • 日期:2017-05-03

本計畫概要  Summary of Current Project

本計畫為「基隆、台中、高雄供水系統降低無收益水量總顧問計畫」委託技術服務,其目地為提高各系統穩定性和售水率,進而減少各系統之無收益水量。

The object of this project is to increase the stability of the water supply system and the rate of water sales in Keelung, Taichung and Kaohsiung, by reducing 29,000, 79,000 and 66,000 plus CMD of NRW, which amounts to a total water supply loss reduction of 174,000 CMD and more.

本計畫內容  Contents of the Project

預計於6年內完成基隆、台中及高雄供水系統降低NRW之各項作業,整體分為分析評估、規劃設計與實質作業等3個階段,自分析評估階段起提供各項技術服務,並協助台水公司完成基隆、台中供水系統後續規劃設計與實質作業驗收等作業。

Estimated to complete all operations for reducing the NRW of water supply systems in Keelung, Taichung and Kaohsiung within 6 years. The entire project can be separated into three phases that include analysis and evaluation, design planning and actual operation. Technical services will be provided as soon as analysis and evaluation starts and assistance to help the Taiwan Water Company in completing the follow up design planning and inspection of actual operation for the water supply systems in Keelung, Taichung and Kaohsiung will also be available.

 

 

分析評估階段  Analysis and Evaluation Phase

針對基隆、台中及高雄3個供水系統進行系統NRW現況分析評估,製作系統之IWA水平衡表,並訂出系統NRW之基線值及績效指標,藉由國際專家團隊之參與,以引進國際間普遍採用之降低NRW管理策略,分別研擬基隆、台中及高雄3個供水系統之降低NRW計畫概要報告書,並由國際專家團隊協助總顧問定期檢討整體計畫執行成效,回饋修正各階段之工作執行方式與內容,並擬定規劃設計階段中共同性之技術規範及作業要點,並應協助辦理基隆、台中供水系統規劃設計、監造及實質作業之招標作業。計劃期間內亦辦理[5]場降低NRW相關作業之工作坊,另針對推動降低NRW作業相關諮詢服務部份,總顧問應協助列席相關審查與查核會議、提供專業諮詢建議。

Perform analysis and evaluation to the current condition of the 3 water supply system in Keelung, Taichung and Kaohsiung in order to draft the IWA water balance chart then establish the baseline value and performance indicator of the system’s NRW. The project aims to introduce internationally common NRW reduction management strategies through the participation of specialist teams from around the globe, drawing up general reports of the NRW reduction project for water supply systems in Keelung, Taichung and Kaohsiung. The international team of specialists will also assist the head consultant in reviewing the execution effectiveness of the overall project, providing feedbacks to correct the method of execution and contents of each phase. The specialists will also draft technical standards and operation guidelines of communality within the design and planning phase, while providing assistance in the invitation to tender operation for the design planning, construction monitoring and actual operation of the water supply systems in Keelung and Taichung. A total of 5 workshops related to NRW reduction will be held during the project period and the head consultant should provide assistance to the consultation services in regards to NRW reduction by participating in related review and audit meetings, providing professional opinions.

規劃設計階段  Design Planning Phase

本階段主要辦理設施、設備及系統等各項規劃設計案之備標作業、規劃設計成果之諮詢與審查,並代表台水公司控管規劃設計作業之時程、預算與品質。

This particular phase of the project includes preparing the standards for each of the design planning case such as facility, equipment and systems, while providing consultation and reviewing the result of the design plans. Plus representing the Taiwan Water Company in the controlling of the schedule, budget and quality of the design planning operation.

實質作業階段  Actual Operation Phase

本階段整體工作包含所有設施、設備及系統工程之施工、安裝、預算控管、品質監督、衛生安全、變更管理、維護策略之建立等,總顧問於本階段中須針對上述內容提供全方位之專案管理服務。而依據實質作業階段成果,回饋檢討修正分析評估階段之內容。

The work involved in this particular phase includes the construction, installation, budget control, quality supervision, sanitary and safety, revision management and the establishment of maintenance strategy for all the facilities, equipment and system. The head consultant is responsible for providing an overall management service for the entire project in regards to contents mentioned above, then provide feedbacks and review that correct the contents of the analysis and evaluation phase according to actual results from the actual operation phase.

上位計畫概要 Summary of Previous Project  

依據政府政策目標:「逐年降低自來水漏水率由現況20%,5年內降至17%,10年內降至15%以下」,故研提了「降低漏水率計畫(102年至111年)」。

The “Water Leakage Reduction Plan” (2013 ~ 2022) was introduced according to former President Ma’s Golden Decade policy objective: “Gradually reduce the rate of leakage for tap water from the current condition of 20% to 17% within the first 5 years and below 15% in 10 years”.

 

第一階段(102年至105年)  Phase 1 (2013 to 2016)

漏水率降至17%以下,每年降低漏水率0.65%。

Reduce water leakage rate below 17% with an annual reduction of 0.65%.

第二階段(106年至111年)  Phase 2 (2014 to 2022)

漏水率降至15%以下,106年降低漏水率0.6%,107 年降低漏水率0.5%、108 至111年每年降低漏水率0.4%。

Reduce water leakage rate below 15% with 0.6% reduction in 2017, 0.5% in 2018 and 0.4% between the years 2019 to 2022.

漏水管控執行策略  Execution Strategy for Water Leakage Control

依據 IWA 及國際間係採取以下4 項具體策略以降低管線漏水,分別如下:

According IWA and international standards, there are 4 types of strategies that effectively reduce water leakage in pipe lines, as shown below:

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水壓管理  Water Pressure Management

水壓大小及水壓變化對於管線破管頻率影響甚大,因此,水壓管理係降低管線漏水之重要工具。建立合理水壓管理操作模式,廣設壓力監測點,並於配水幹管設置電動閥,藉以調控供水壓力,穩定各節點壓力均能管控維持在1.5~2.5kg/cm2之間,減少水錘導致破管漏水。

The amount and change of water pressure has enormous impact on the frequency of water pipe bursting. Therefore, the management of water pressure is an important tool to greatly reduce the risk of pipeline leakage. The main idea is to reduce hydraulic hammer in order to reduce pipe burst by building a reasonable water pressure management operation mode, widely establishing pressure monitoring points and installing electrically operated valves at the main water distribution pipe in order to adjust and control water supply pressure, stabilizing the pressure at each node point between 1.5~2.5kg/cm2.

修漏之速度及品質  Speed and Quality of Fixing Leaks

修漏速度將直接影響漏水量之多寡,而修漏品質則影響日後漏水復原發生之可能性。

The speed at which leakage can be repaired is directly related to the amount of water leaks and the quality of the fix can affect the possibility of water leakage reoccurrences in the future.

主動漏水控制  Active Water Leakage Control

地下漏水不易檢測,因此,國際間已投入相當多的資源,開發各式檢漏專業技術及精密儀器。除一般聽音設備檢漏外,尚有音波探測、氦氣檢驗、透地雷達…等。不管何種漏水檢測方式,皆需正確操作、適度管網大小及水壓水量監控設備,方能有效提高檢漏效率,並透過分區計量管網之建置及監控系統,以達主動漏水控制之目的。

Water leakages underground could be hard to detect. Therefore, a lot of resources have already been invested internationally, with the development of all types of professional leakage detecting techniques and precision instruments. Besides common leakage detection equipment that relies solely on hearing, there are also sound wave detection, helium gas testing, ground-penetrating radar and more. Regardless of the types of water leakage detection method, all the methods require proper operation, pipeline network sizing and water pressure/volume monitoring equipment, in order to effectively increase the rate at which leakage is detected. Furthermore, the goal to actively control water leakage can be achieved through the establishment of pipeline network zone metering and monitoring system.

管線資產維護  Pipeline Asset Maintenance

管線自完工埋設道路地下後,即受現地環境自然及人為影響等因素,隨使用時間而逐漸老化,其中水公司使用最多的塑膠管(PVCP),更因材質老舊逐漸脆化,致道路受重車輾壓而產生破管漏水情形。因此,當管線資產隨時間遞減而致維護費用超過管線殘餘價值時,即為管線汰換之時機。

After the completion of pipeline construction that embeds it underneath the roadway, it is then affected by natural environmental and artificial factors and slowly deteriorated as time pass by. The PVCP plastic tubing used by the water company in vast amounts becomes brittle when it ages and often breaks after heavy vehicle ran over the roadway, causing water leak. Therefore, when pipeline asset ages and its maintenance cost exceeds its residual value, then it is time to replace the pipelines.

聯絡我們  Contact us

感謝您的建議與指教。

Thanks for your suggestions and comments.

 

美商傑明工程顧問(股)台灣分公司  MWH Americas Inc., Taiwan Branch  

10695 臺北市大安區光復南路438號5樓 TEL: (02) 2325-2100

5F, No. 438 Guangfu S. Road, Taipei 10695, Taiwan(R.O.C.) TEL: (02) 2325-2100

 

台灣自來水股份有限公司  Taiwan Water Corporation 

40455 台中市北區雙十路二段2-1號 TEL: (04) 2224-4191

No.2-1, Sec. 2, Shuangshih Rd., North District, Taichung City 404, Taiwan (R.O.C.)

TEL: (04) 2224-4191

 

計畫相關網站  Related Links

台水公司全球資訊網 Taiwan Water Corporation

降低漏水率專區  Designated Section for Water Leakage Rate Reduction

台水公司第 1 區管理處  The 1st Branch Office of TWC

台水公司第 4 區管理處  The 4st Branch Office of TWC

台水公司第 7 區管理處  The 7st Branch Office of TWC

東京水道サービス株式会社  TSS


  • 更新日期:2017-05-08 15:28:00
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