• Country: Aden, Yemen
• No of vacancies: N/A
  
• Salary: N/A 
• Organization: CTG
• Gender: Both 
• Deadline: 2024-01-02

Job description
CTG overview
CTG staff and support humanitarian projects in fragile and conflict-affected countries around the world, providing a rapid and cost-effective service for development and humanitarian missions. With past performance in 17 countries – from the Middle East, Africa, Europe, and Asia, we have placed more than 20,000 staff all over the world since operations began in 2006.

CTG recruits, deploys and manages the right people with the right skills to implement humanitarian and development projects, from cleaners to obstetricians, and mechanics to infection specialists, we’re skilled in emergency response to crises such as the Ebola outbreak in West Africa. Key to successful project delivery is the ability to mobilise at speed; CTG can source and deploy anyone, anywhere, in less than 2 weeks and have done so in 48 hours on a number of occasions.

Through our efficient and agile HR, logistical and operational services, CTG saves multilateral organisations time and money. We handle all our clients’ HR related issues, so they are free to focus on their core services.

Visit www.ctg.org to find out more

Overview of position
Water scarcity in Yemen has been a long lasting & ever accelerating issue with many social & economic effects. 2 / 3rd of the country is classified as hyper arid with less than 50 mm of rainfall per year & most of the rest is classified as arid with less than 200 mm rainfall. Due to historically limited investments in harvesting surface water & the destructive war, Yemen has over exploited its groundwater sources considerably over the last 50 years. Agriculture, as the main livelihood mode for more than 80% of Yeminis, uses 90% of overall water use. About 40% of which is sourced from groundwater, 50% is rainfed & 10% from surface sources. As a result, the deep non renewable water resources created by nature over 10,000 years have been largely depleted affecting 20 – 25% of the arable land is in mountain terraces. Like many other parts of Yemen, Aden depends entirely on underground water from 3 main water supply fields, Bir Nasser & Aimanasrah in Lahj & Bir Ahmed in Aden. In April 2021, due to the structural damage, frequent power outages & ballooning fuel prices, water pumps were only functioning every 3 days for 2 – 4 hours. So, accessible quantities of water cover only 50% of the total water demand. Prior to the 2015 crisis, there were at least 2 desalination stations in Yemen, 1 of which, Alhaswah electricity station in Aden, produces about 69,000 m3 / day of fresh water. The water flows into the network of Aden’s water supply. A 2nd desalination station, located in the Almokha area, which had a similar nominal capacity, was destroyed by an airstrike in 2016. Yemen used to produce 25 million m3 / y of desalinated water, approximately 2 % of its water deficit (estimated at around 1,500 million m3 / y). In theory, for Yemen to count on desalination to cover this gap, it would have to construct & maintain 50 large desalination plants. Recognizing the urgency of the situation, the Ministry of Water & Environment (MoWE) is currently drafting the national strategy for the exploitation of non conventional water resources (seawater desalination & sewage treatment). In order to support implementation of this strategy, desalination plant technology is considered as 1 of the means to provide non traditional drinking water to meet the demands of local communities & contribute to their economic welfare.

The main objective of this consultancy is to conduct a scoping & prefeasibility study of large scale desalination of sea / brackish water to provide potable water for domestic use in Aden. The scoping & prefeasibility study aims at defining project objectives & requirements & to establish the scope of the desalination plant project at a strategic level. This includes identifying the target capacity & the desired outcomes. The scoping & pre feasibility study also involves conducting preliminary research & gathering information to determine the viability of the project. This involves conducting an initial analysis of the project’s technical, financial & environmental aspects. It includes evaluating the available water resources, assessing the site conditions & considering the potential environmental impacts of the seawater / brackish water desalination plant. The scoping & pre feasibility phase aims to help in identifying potential challenges & risks associated with the strategic desalination project & it will support the efforts led by the MoWE to draft the national strategy for the exploitation of non conventional water resources (seawater desalination & sewage Rreatment). It will inform interested donors to fund new desalination projects or go for a joint action to implement large scale desalination facility.

Role objectives
Scope of work:

The CO seeks the services of an experienced & qualified Hydraulics Engineering Expert to conduct a scoping & pre feasibility study for large scale desalination of sea / brackish water to provide portable water for domestic use in Aden Governorate, Yemen. The overall scope of work is to:

Conduct field visit for visual inspection & data collection.

Conduct scoping & prefeasibility study for large scale sea / brackish water desalination in Aden.

The Hydraulics Engineer will conduct the following activities:

Reviewing existing studies & reports on desalination projects in similar regions as well as available suppliers & contracts modalities for implementation.

Conduct detailed scoping & prefeasibility study to identify the viability of establishing large scale desalination plants in Aden.

Conducting an analysis of the water usage patterns, projected population growth & climate data to determine the water demand & the future water needs Aden considering other water supply options.

Identifying potential desalination sites & locations for water intake & discharge for the large scale desalination plant, considering implications of climate change on the coasts, such as rising sea levels & extreme weather events.

Identify potential challenges & design appropriate measures to protect the desalination plant from coastal hazards. This includes considering the location & orientation of intake & outfall structures, ensuring optimal water quality & minimal environmental impact.

Collaborate with the team to prepare the general guidelines for setting up a large scale desalination plant including feasibility study, site selection criteria, renewable energy efficiency, design & engineering, codes & standards, O&M, cost management & recovery.

Evaluate the water distribution systems. This includes the efficiency of network of pipelines, pumps & storage facilities to ensure the seamless distribution of desalinated water to end users in Aden. This includes the adequacy of existing water storage tanks in the context of large scale desalination plant project & involves evaluating the capacity, structural integrity & operational efficiency of the tanks.

Collaborate with the Desalination / Distillation Process Engineer (Team Leader) & the Environmental & Social Safeguards Expert to prepare the general guidelines & the pre requisite criteria for the implementation of largescale desalination plant.

Coordinate with stakeholders, including MoWE & LWSC Aden.

Communicate project updates, technical findings & recommendations to stakeholders through reports & presentations.

The Hydraulics Engineer will deliver the following:

Deliverables

Due dates

Submission requirement

% of payment allocated to this task

Approvals required from

Field visit & Inception Report (IR): Summarizing the findings of the site visit & methods that will be applied to evaluate water supply networks, storage tanks & hydraulics & coastal conditions as well as any constraints or limitations encountered during the site visits.

Within 10 days from the commencement date.

Inception report

20%

Cleared by Team Lead, POS unit

Draft hydraulic analysis & evaluation: This includes but not limited to:

i. The evaluation of the existing water distribution system including networks & storage tanks including recommendations for upgrading & rehabilitation as well as the seamless integration into the existing water distribution system.

ii. A set of criteria & guidelines for selecting suitable sites for large scale desalination plants in Aden considering coastal & morphological conditions as well as available energy head.

iii. Assessment of the economic viability of alternatives for reducing water losses, leaks & non accounted for water (metered / non metered).

iv. Preliminary cost estimation for the desalinated water networks including distribution networks, O&M, bulk water storage tanks etc.

v. A detailed plan outlining the steps & timeline for upgrade, rehabilitation & seamless integration into the existing water distribution system to implement large scale desalination projects in Aden.

vi. A draft program for capacity building & training to enhance the local expertise & knowledge in the field of water supply network evaluation & upgrading for desalination purposes.

Within 25 days from the commencement date.

Draft hydraulic analysis & evaluation

40%

Cleared by Team Lead, POS unit

Final detailed hydraulics analysis & evaluation: The final report will integrate comments received from stakeholders & our client & will provide a comprehensive summary of findings & recommendations on the water distribution system based on a well rounded analysis that will lead to a full fledged detailed design phase of the large scale desalination plant.

Within 60 days from the commencement date.

Final detailed hydraulic analysis & evaluation

40%

Cleared by Team Lead, POS unit

Total

100%

The draft & final detailed hydraulic analysis & evaluation will be incorporated into the draft & final reports prepared by the Team Leader Desalination / Distillation Process Engineer.

Project reporting
The Hydraulics Engineer will work with the Desalination / Distillation Process Engineer (Team Leader) & the Environmental & Social Safeguards Expert with support from the Heads of the Aden Sub Office, Amman liaison office & oversight & support team. The consultant will collaborate with the CO program, project & operations teams. our client will provide the consultant with logistical support in conducting the assignment.

Key competencies
BSc. in civil / mechanical engineering or related engineering fields.

7 years’ experience in hydraulic engineering with focus on water supply analysis.

Knowledge in coastal hydraulics & morphology.

Knowledge in relevant industry standards, guidelines & regulatory requirements for water supply & distribution works.

Proven track record of successfully conducting scoping & prefeasibility studies for water supply projects.

Knowledge in developing environmental & social guidelines for fragile & hazardous environment.

Experience in conducting water supply distribution networks analysis using, EPANET, WaterGEMS or other related computer programs is a distinct asset.

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