Baghdad Water Supply and Sewerage Improvement Project: Construction supervision for R2 reservoir and water supply networks projects

Iraq - P162094 - Baghdad Water Supply and Sewerage Improvement Project - PMT-CS-07

Country: Iraq

Project Id: P162094

Project Name: Baghdad Water Supply and Sewerage Improvement Project

Loan/Credit/TF Info.: IBRD-87960

Notice Version No.: 1

General Information

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Republic of Iraq

Mayoralty of Baghdad (MoB)

Baghdad Water Supply and Sewerage Improvement Project - (8796 – IQ)

Request for Expressions of Interest

For the

Construction Supervision and Related Services for the Construction for the (R2) Reservoir and the water supply networks projects.

Procurement Reference PMT.CS.07

The Government of Iraq has received financing from the International Bank for Reconstruction and Development (IBRD) (the “Bank”) in the form of a loan toward the cost of the Baghdad Water Supply and Sewerage Improvement Project. The Mayoralty of Baghdad (MOB), the implementing agency of the Borrower, intends to apply part of the proceeds toward payments under the contract for consulting services aiming at the Construction Supervision and related services on the Construction of the (R2) Reservoir and five water network renewals in five districts in Baghdad.

The Mayoralty of Baghdad (MoB) intends to shortlist qualified consulting firms or consortiums to provide consultancy services for the aforementioned works. Services include the provision of the necessary technical assistance to the MoB, the review of the designs, the supervision of the construction works, the monitoring and reporting of the project progress, the compilation of the full set of as-built drawings of all completed works and the relevant contract management.

The construction of the projects is about 36 months for the R2 reservoir and different dates for the water networks, inclusive in the 36 months period. This period includes the defect liability periods.

The MoB now invites eligible consulting firms or consortiums to express interest in providing the aforementioned services. Interested consultants must provide information indicating their qualifications and capability to perform the services (organization structure; general experience; experience in the region; similar assignments). Submitted profiles must be limited to a maximum of 30 pages and must include the full coordinates of the Consulting firm(s).

A short list of consultants shall be selected in accordance with the procedures set out in the guidelines for the selection of Consultants by World Bank borrowers. The short listed consulting firms / Consortiums shall be invited to respond to a RFP and consulting firm/consortium shall be selected in accordance with the Quality Cost based election (QCBS) method.

Interested consulting firms/consortiums may obtain further information at the address below from 9:00 a.m. to 1:00 p.m.

The Deadline for receiving Expression of Interests is February 24, 2020 at 13:00 Baghdad local time.

Expressions of interest must be delivered to the below address. Electronic EOI are acceptable.

Ibrahim Mustafa Hussain

Mayoralty of Baghdad – 6th floor – World Bank PMU

Khalani square – Al Khulafa Street / Baghdad

+964 (+1) 816 8497

Mayoraltybaghdad.pmu@gmail.com

1. Section 5.  Terms of Reference

Construction Supervision for

construction of R2 reservoir and renewal of 5 water networks

This document sets out the Terms of Reference for Consultancy Services for Construction Supervision as described hereafter in the Scope of work. The assignment will be managed by the Client, The Mayoralty of Baghdad (MOB).

1. Background

The Government of Iraq has received financing from the International Bank for Reconstruction and Development (IBRD) (the “Bank”) in the form of a loan toward the cost of the Baghdad Water Supply and Sewerage Improvement Project. The Mayoralty of Baghdad (MOB), the implementing agency of the Borrower, intends to apply part of the proceeds toward payments under the contracts for

• Construction of the “R2” concrete reservoir complex with storage capacity of 135,000 m³ complete with pump stations, generator, chlorination station, warehouse, buildings, etc.

Renewal of water supply network - M 821 Neighborhood/ Nearby Al-Dora   Neighborhood.

• Renewal of water supply networks – M 321Neighborhood/ Nearby Al-Sader city Neighborhood
• Renewal of water supply networks – M337Neighborhood/ Nearby Al-Sader city Neighborhood
• Renewal of water supply networks – M801Neighborhood / Nearby Al-Dora Neighborhood.
• Renewal of water supply networks – M815Neighborhood/ Nearby Al-Dora.

The total estimated length of water supply renewal is …130650… meters.

This work will include construction supervision of these work contracts.

1. 1. 1.      Existing Conditions

The insufficient water and sanitation services led to deterioration of living, health and environmental conditions of the population. The project aims at improving economic conditions; increase the quantity, quality and access to potable water; reduction of water borne diseases.

Baghdad is administered by the Mayoralty of Baghdad (MOB), which is divided into 14 districts in total. The water is administered centrally by the Baghdad Water Authority (BWA), which is responsible for all infrastructure assets in the sector.

The BWA currently operates 12 water treatment plants where an estimated 2.9 Million Cubic Meter (MCM) of finished water is produced on daily basis. MOB estimates a daily shortage of an estimated 1 MCM, which shows that service delivery is far from efficient. Water treatment plants and units exclusively depend on Tigris River to fulfill their raw water intake. A number of expansion projects have been taking place recently to meet increasing demands by all sectors. Lots of essential equipment was looted from pumping stations and treatment plants, as a result of Iraq conflict and insecurity, which in turn has affected BWA’s plans and services.

Poor public service delivery, reflected especially in significant water shortages, is a binding constraint on the population’s quality of life and private sector development. Safe drinking water and basic sanitation is of crucial importance to the preservation of human health, especially among children. Baghdad is one of the governorates most impacted by outbreaks of waterborne diseases.

 Contaminated water supplies and improper disposal of sewage force families to spend a significant fraction of their income to medical treatment and to the purchase of water from expensive private vendors.

In Al-Sha'ab & Al- Rasheed sub-district, water distribution needs high pumping pressures at the source in order to convey water to remote areas without interruptions. The pumping pressure is considerably irregular due to the direct pumping from the network; this situation has led to many operational problems, and already caused service intermittence. In addition, there is a possibility of polluting the system when the pressure drops with the presences of leakages and breakages due to old networks. 

The construction of R2 and the renewal of potable water networks in Al- Shaab & Al-Rasheed is a subproject of The Baghdad Water and Sewerage Improvement Project (BWSIP). The BWSIP will support improvements in high-priority water and wastewater services that were identified in the recent Master Plan for Baghdad to help the MoB to improve its performance in water and wastewater service delivery. BWSIP combines institutional, technical and operational steps to be undertaken by the BWA, while ensuring that they improve their financial situations.

1. 1. 1. Project Description

1. Construction of the “R2” reservoir.

The new reservoir lies in Al-Sha’ab sub-district. It is a two-compartment closed structure. It will provide a water storage capacity of 135 ML withdrawn from the existing potable water network and pumped back to the same network. The time for completion of this new reservoir is 1000 days. The reservoir complex consists of the major components described below.

1. The Reservoir

The water storage reservoir (tank) is a closed rectangular-shape structure that will mainly be constructed using reinforced concrete, and structural steel, as well as other materials for finishing and waterproofing. The structure will have the diminutions (163m X 140m X 6m). The Tank will be settled below the ground level and will rise no more than 2.0m above the finished ground level. The reservoir will consist of twin compartments equipped with inlet and outlet structures (pipe works and chambers), and reservoir overflow system. The following figure shows section and 3D views.

2. Overflow system

The water reservoir will be equipped with an overflow system at the outlet chamber to convey overflows safely to a discharge point off-site, which will also be used to drain water from the two compartments in maintenance events.  Pipework off-site will be supplied in such a way as to withstand loads where intersecting with roads and railways occurs.

3. Pumping station

This facility will include pumps and their associated motors, valves, and piping network system. Pumps will be of a vertical spindle split casing type, which will be installed in the basement and will be completely isolated from water (dry well).   Motors will also be housed above ground level enough to avoid flooding levels. Water will be pumped from feed reservoirs through 2 pipelines to an inlet pipe manifold. Discharge will comprise a single pipeline equipped with central valves. The facility will be in flexible operating mode to accommodate emergency loads and to cater for drainage and maintenance works. That would include access ladders and openings into the motor room/ basement.

4. Power transformers

The electro-mechanical equipment at Reservoir R2 pump station will be supplied with electrical power from oil filled, naturally air cooled and outdoor two power transformers (3200KVA,11/3.45 KV) each. These two transformers will be located in open front bays and stand on concrete plinth.

5. Standby power generation room

The Reservoir R2 pump station will have two standby diesel generator sets with (3200KVA, 3.3KV) each. However, the generating room will house sufficient diesel generators and associated control equipment to maintain the ultimate peak output from the reservoir works, and an annex for administration rooms. Transformers will be located on one side of the building within uncovered compounds.

6. Fuel tanks building

This will be built to provide storage of 7 days fuel supply for continuous generator running at ultimate requirements. The facility is an underground chamber containing fuel storage adjacent to the power generating station. The chamber will be constructed of re-enforced concrete floors and walls and will be supported in piles.  Access from the above ground house and a system for forced ventilation will be provided as well.

7. Chlorination station

This component aims to ensure adequate level of residual chlorine at the farthest point in the network. Chlorine doses will be injected in water pipes both at the inlet and outlet facilities of the water complex proportional to flow. However, the design will provide independent maximum dosage of 5 mg/l. the chlorination system will comprise of a drum store, chlorination room, motive water pump room, monitoring room, switchgear room, toilets and self-contained room housing an exhaust air cleaning system. For this component, the following safety features will be incorporated:

•Forced ventilation,

•Emergency doors,

•Drum submersion systems,

•Exhaust air cleaning system,

•Chlorine detection and alarm system.

8. Irrigation pumping station

This is an ancillary facility and will comprise a drum store, chlorinating room, motive water pump room, monitoring room, switchgear room, toilets and a self-contained room housing an exhaust air cleaning system;

9. Valve chambers and connecting pipework

The Project will also include miscellaneous chambers for flow metering, chlorine injection, and sampling.  Necessary chambers will be provided with sufficient air valves, washouts, valves, valve chambers and cross connection pipework. This combination will enable receiving inflows from trunk pipelines, then discharging them into either compartment of the service reservoirs, in addition to drawing off water from any of the reservoir compartments to either pumping station inlet pipe manifold

10. Pipework

In general, these will consist of the incoming trunk pipelines, the reservoir bypass pipework, as well as outgoing delivery pipelines. Pipes will be made of ductile iron with cement mortar lining. Flow meters, valves, and washouts will also be installed on the site pipework. A washout will be provided on any length of pipe between two stop valves. Flow meter chambers will be provided with natural drainage where possible and will have high level alarms connected to the pump station control panel. Self-priming hand operated pumps will be provided to chambers as well.

11. Warehouse store

This facility was proposed for the accommodation of spare parts and other material that are needed in the maintenance of electromechanical equipment.

12. Guard house

This guard house will comprise a reception/ office area, a rest area, and a washroom/ toilet, which is a single-story structure.

13. Parking

Parking canopies will be made out of reinforced concrete, with a secondary system of precast concrete or aluminum lightweight roof, for car parking. Enough room will be made to host six cars. The canopies will be designed to be compatible and complimentary with the main building and finished to an equivalent standard.

14. Site roads and landscaping

This includes paved areas, guard house, fencing landscaping, walls, and railing and other miscellaneous works, like reservoir overflow systems comprising control chamber, overflow pipeline and outfall works.

15. Boundary Walls and Main Gate.

16. Residential Building.

This includes one building contains 4 stories in two floors used by BWA employees 

The contract for reservoir is expected to be awarded in July or August 2019.

The Project is part of the Baghdad water improvement program, which aims to increase water supply for the city of Baghdad. The new reservoir will receive potable water from Sharq Dijlah water project and further from Rasafa water project once made available, using a network of mains.

The final design has adopted the following environmental sustainability concepts:

•Carbon emissions reduction, and utilization of on-site renewable energy sources,

•Minimization of water consumption through conservation and recycling,

•Minimization of production and exportation of waste materials,

•Preservation and enhancement of landscape and biodiversity,

•Preservation of any existing forestry and fauna,

•Preparation of a detailed landscape,

•Minimization of carbon emissions from transportation,

•Using energy efficient lighting controls and fixtures, and

• Insulation of exterior cavity walls, to protect against deterioration and corrosion. That includes thermal insulation, and insulation for water retaining structures.

•Installation of noise silencers, and smoke, fire, moisture dampers for ductworks, according to applicable codes,

•Installation of sewerage collection and disposal, and storm water drainage systems,

• Installation of firefighting systems and applying proper fencing and guarding to the whole site.

1. Renewal of five water supply in Al-Sha'ab & Al- Rasheed sub-districts.
   

The works covered in this document are part of the Emergency Baghdad Water supply and Sanitation Project. This includes work for rehabilitation and renewal of drinking water network at Al-Sha'ab & Al- Rasheed sub-districts, Baghdad.

This covers the following contract:

•   Renewal of water supply network -   M 821. CONTRACT No. BWA.W.03

•   Renewal of water supply networks – M 321. CONTRACT No. BWA.W.04

•   Renewal of water supply networks – M337. CONTRACT No. BWA.W.05

•   Renewal of water supply networks – M801. CONTRACT No. BWA.W.06

•   Renewal of water supply networks – M815. CONTRACT No. BWA.W.07