Comparison between construction of Kimwarer dam and hydropower project and Nyerere dam in Rufiji Hydropower project

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Julius Nyerere Hydropower Plant And Dam - Tanzania​

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Employer: Tanzanian Ministry of Energy
Contractors: JV Arab Contractors Company and Elsewedy Electric
Project location: Stigler's Gorge Area, the dam is located in the Morogoro area on Rufiji River - Tanzania
Completion Period: 42 months including 6 months mobilization

Project Objectives:
Generating electricity with capacity of 2115MW to satisfy energy needs in Tanzania Control water flow in the period of flooding and thus providing the necessary water requirement

Main items:
-Total excavation is about 4 million m3
-Total aggregate backfilling is about 7.5 million m3
-Total volume of concrete is about 2.6 million m3
-Total weight of reinforced steel is about 64000 ton

Scope of Work:
-Main dam for storage of water to generate hydropower using RCC concrete for main dam with total length 1025m at crest level and 130m dam level
-Construction of 4 saddle dams for reservoir impounding of water with length of 1.4km, 7.9km, 4.6km and 2.6km with a maximum height 21.3m, 14m, 12.4m and 5.5m respectively, with a capacity to impound approximately 33 billion m3 of water
-Construction of a hydropower plant with a capacity of 2115mw and a substation of 400kv; in addition to 400kv transmission lines to the nearest point of the public network The civil works includes the following:
-Permanent access roads connecting the site with the existing roads network and length about 21km
-Temporary access roads that connect all permanent facilities with length of 59km
-Main dam of RCC on Rufiji River Power plant with administration building, control building, workshops and stores
-Connecting power station 400kv including transmission lines 4 variable height and length dams for water impounding of reservoir Diversion tunnel 660m length (15*17m) and 2 cofferdams
-The main spillway is located on the center of the main dam with 7 radial gates and an emergency spillway is located in the first saddle -Permanent concrete bridge on Rufiji River
-Integrated residential complex on an area of 19000m including housing and playground, permanent furnished offices; in addition to temporary residential complex, utilities, lighting, drinking water and water treatment

Main electromechanical works for power house:
-Power plant 2115 -9 vertical Francis turbines, each turbine capacity is 235mw
-9 butterfly valves for entrance
-9 vertical axis generators
-Water and sewage cooling systems
-Ventilation, air-conditioning, firefighting and communication systems
-Protection, control and monitoring equipment
-3 diesel generators for the power plant, dam and spillway
-Other supplementary items

Julius Nyerere Hydropower Plant and Dam | The Arab Contractors

The Arab Contractors is one of the leading construction companies in the Middle East and Africa

www.arabcont.com

 

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News​

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August 7, 2021​

The Chairman visits Julius Nyerere Dam in Tanzania​

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Eng. Sayed Farouk – CEO & Chairman of the Arab Contractors Company was in inspection visit to Julius Nyerere Dam and Hydropower Plant in Tanzania, which took two days, during which he followed up all the work sites of the project. He was briefed on the work progress of the project and the implementation rates of the ongoing works. Eng. Sayed Farouk emphasized on the importance of providing all the required resources to comply with the time schedules of this huge project. During his meeting with the project staff, he stressed the need to adhere to the highest standards of quality in the execution of work due to the importance of the project to the Tanzanian people. President Abdel Fattah El Sisi emphasized the importance of this project and the need to follow-up and supervision by the government and the Ministry of Housing, Utilities and Urban Communities. He was accompanied by Eng. Wael Hamdi - Vice President of Elsewedy Electric Company, Eng. Hossam El Reefy – AC Board Member, Eng. Hisham Hegazy- CEO of Elsewedy Electric PSP. The visit was attended by Eng. Ayman Attia and Eng. Rafea Youssef- Deputy Managers of the JV, Eng. Hossam El Nozhy - Contractor's representative to the Client, and Eng. Heba Abou El Ella – Manager of the Engineering Department for the Transportation Projects.

The Chairman visits Julius Nyerere Dam in Tanzania| The Arab Contractors

The Arab Contractors is one of the leading construction companies in the Middle East and Africa

www.arabcont.com

 

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Update: JNHPP penstock ready for shipping to the site

Source

 

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JNHPP UPDATE: The Largest Segment of RCC Casting Completed on 16 August 2021

▲ This segment is 17.5m in height and is located in the middle section

▲ This cast involved 158,000 cu.m of RCC and 3,600,000 cu.m of normal concrete. Casting lasted for 20.5 days

▲ Area for this cast is 11,600 sq.m

Source

 

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NHPP capable of generating power for three years in case of droughts​

ippmedia.com/en/business/jnhpp-capable-generating-power-three-years-case-droughts
20. August 2021
20Aug 2021
By Guardian Reporter
Business
The Guardian

JNHPP capable of generating power for three years in case of droughts

IN case of droughts, the Julius Nyerere Hydro Power Project has capacity to continue generating electricity for three years in a row, thanks to its over 33.5 billion reservoir.

Construction work going on at Julius Nyerere Hydro Power Project along River Rufiji.

Engineering Consulting Unit’s Resident Engineer, John Mageni told visiting CRDB Bank Plc’s senior management and board members a fortnight ago that droughts lasting less than three years, will not make the mega project a white elephant.

Responding to questions and comments from the bank’s high profile team which was led by Board Chairman, Dr Ally Laay and Managing Director, Abdulmajid Nsekela, Eng Mageni said that the mega project which will generate 2115 megawatts of power, will stop flooding downstream.

“We expect to start refilling the dam by November this year ahead of mid next year when power generation is expected to start,” he said while responding to concerns by the bankers on the possibility of the deadline not being met because the project is only 54 complete.

The Tecu chief further noted that the mega the project’s reservoir will also provide enough space for commercial fishing, water sports including boat rides for tourists. “This area will also attract a lot investment for those willing to build hotels, restaurants for tourists who will be coming here to see the dam because of its uniqueness,” he hinted.

The JNHPP is the fourth largest in Africa and with Unesco approval that Julius Nyerere National Park remains a world heritage site, tourism will likely grow in the area once the dam is completed in June 2022.

Responding to questions on local demand to consume the power generated at the dam, acting Tanesco Managing Director, Engineer Pakaya Mtamakaya said local consumption is set grow due to industrialization.

“But we will also export to neighbouring countries which have demand, we talking about countries like Mozambique, Malawi and Zambia,” Eng Mtamakay said while stressing that the countries’ economic growth and government’s rural electrification will increase demand.

CRDB Board Chairman, Dr Ally Laay and Managing Director, Abdulmajid Nsekela said their decision to invest in the mega project was right and that shareholders of the bank should expect more dividend payment from more profits to be generated. “I can assure my fellow investors that our money is safe in this project,” Dr Laay said after the site visit.

Nsekela whose bank has already provided more that 1trn/- in bridge financing to the project to help contractors proceed without hiccups as they await government payment, promised to provide more credit if required to do so. The mega project is being implemented by a joint venture of Arab Contractors and Elsewedy Electric of Egypt at a cost of over 6.5trn/-.

 

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In Photos: Installation of first hydroelectric turbine in Tanzanian dam by Egyptian consortium​

When complete, the dam will generate 2,115 mw of clean power to more than 60 million Tanzanians and control the Rufiji River's water flow in the period of flooding​

Ahram Online , Wednesday 18 Aug 2021

workers on the construction site of the Julius Nyerere Hydroelectric Power Project dam in Tanzania. Photo courtesy of the Egyptian cabinet Facebook page


An Egyptian consortium has begun installing the first turbine for the Julius Nyerere Hydroelectric Power Project (JNHPP) in Tanzania, Egypt’s Minister of Housing, Utilities and Urban Communities Assem El-Gazzar announced on Wednesday.

The JNHPP, which is located in the Morogoro area on the Rufiji River in Tanzania, is being built through a joint venture of two Egyptian companies, the Arab Contractors Company and Elsewedy Electric, and will secure a clean power supply for more than 60 million Tanzanians as well as control water flow during flooding.

El-Gazzar noted that the installation of the first turbine was observed by officials from the Tanzanian Ministry of Energy, the employer of the project.

A crane carrying a part of the first Turbine which was installed for the Julius Nyerere Hydroelectric Power Project dam in Tanzania. Photo courtesy of Egyptian cabinet Facebook page

The installed turbine is the first of nine, each with a capacity of 235 mw, and the total hydropower dam’s capacity stands at 2,115 mw, a statement by the ministry said.

El-Gazzar, who visited the project site in May, said in Wednesday’s statement that Egypt’s President Abdel-Fattah has continuously followed up on the JNHPP, which is of great importance in highlighting cooperation with African brothers.

Chairman of the Arab Contractors Company Sayyed Farouq said the progress on the project is going well and according to the plan, indicating that all the workers are aware of the importance of this project to realise the dream of the Tanzanian people.

During the installation of first Turbine for the Julius Nyerere Hydroelectric Power Project dam in Tanzania. Photo courtesy of Egyptian cabinet Facebook page

The dam is some 1,025 metres long at the summit and 131 metres high with a storage capacity of about 34 billion cubic metres of water. When complete, the JNHPP will be the largest in Tanzania, and the energy generated will be transmitted through transmission lines at a voltage of 400 Kilovolts to a substation where it will be integrated into the national electricity grid.

The project dates back to August 2017 when Tanzania announced bids for the construction of the dam. In December 2018, the contract was assigned to Arab Contractors and Elsewedy Electric at a budgeted cost of $2.9 billion.

In February 2019, the government of Tanzania handed over the construction site to the Egyptian companies and construction began in the third quarter of 2019, and the project is scheduled to be completed by 2022.

workers and engineers installing the first Turbine for the Julius Nyerere Hydroelectric Power Project dam in Tanzania. Photo courtesy of Egyptian cabinet Facebook page

In Photos: Installation of first hydroelectric turbine in Tanzanian dam by Egyptian consortium - Politics - Egypt

When complete, the dam will generate 2,115 mw of clean power to more than 60 million Tanzanians and control the Rufiji River's water flow in the period of flooding

english.ahram.org.eg

 

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Egypt installs huge hydroelectric turbine at Tanzanian dam​

Egypt Independent
August 19, 2021

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An Egyptian alliance including the Arab Contractors and El Sewedy Electric companies has succeeded in installing the first huge dam turbine in Tanzania, Undersecretary of the African Affairs Committee in the House of Representatives in Egypt, Rizk Galy Nasrallah, said.

The installation is taking place at the Julius Nyerere Hydropower Station and Dam project in Tanzania (JNHPP), in the presence of officials of the Ministry of Energy and the Tanzanian Electricity Company, Nasrallah said.

He added that parts of the first turbine have been completed, and a total of nine turbines with a capacity of 2,115 megawatts will be installed. Egyptian engineers and technicians are working now to complete the project.

The Julius Nyerere Dam in Tanzania is a national project for the Tanzanian people. Upon its completion it is expected to have a storage capacity of 34 billion cubic meters.

The dam is located within the Selous Forest Reserve in Morogoro County.

The dam will be built on an area of about 1,200 square kilometers and extend for roughly 100 kilometers, with tributaries and sources extending over an area of 158,000 square kilometers.

The estimated annual production of the power plant could reach about six million kilowatt-hours from an average annual flow of about 28 billion cubic meters.

Edited translation from Al-Masry Al-Youm

Egypt installs huge hydroelectric turbine at Tanzanian dam - Egypt Independent

An Egyptian alliance including the Arab Contractors and El Sewedy Electric companies has succeeded in installing the first huge dam turbine in Tanzania, Undersecretary of the African Affairs Committee in the House of Representatives in Egypt, Rizk Galy Nasrallah, said.

egyptindependent.com

 

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Update: JNHPP

 

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JNHPP UPDATE: Casting the base of the tower intake

▲ Casting the base of the tower water intake


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Update: JNHPP

 

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Rusumo Hydropower project

 

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