The Zhouning pumped-storage power project under construction in the Fujian province of China will comprise four generating units for a total capacity of 1.2GW.
China Huadian Fuxin, a subsidiary of Huadian Corporation, is developing the hydroelectric facility with an estimated investment of approximately £783m ($964m).
The pre-feasibility study for the project passed the acceptance review by China’s General Institute of Hydropower and Water Conservancy Planning and Design in April 2014.
While the preliminary works on the project commenced in December 2015, the main construction works were officially started in December 2016.
The first pump-turbine unit of the project is expected to come online by June 2021, while the entire facility is planned for completion in July 2022.
At full capacity, the Zhouning pumped-storage power station is expected to generate up to 1.2 billion kilowatt-hours of electricity a year while offsetting 208,000t of coal consumption, 420,000t of CO2 emissions, and 2,800t of SO2 emissions annually.
Location and site details
The Zhouning pumped-storage power station is located near the Qibu town in Zhouning County, approximately 50km away from Ningde city, in the Fujian province of China.
The project site lies approximately 360m upstream of the Longxi II power plant, at the junction of the Qibu and Muyang rivers. It is also situated at the intersection of the Fujian power grid and the East China regional power grid.
Zhouning pumped-storage facility make-up
The Zhouning pumped-storage hydroelectric facility will comprise upper and lower reservoirs connected through a water delivery system, an underground powerhouse, and a surface switch station.
The underground powerhouse will be equipped with four vertical-shaft, single-stage, Francis reversible pump-turbine units of 300MW capacity each.
The project also involves the construction of auxiliary powerhouse tunnels, main transformer tunnels, tailgate tunnels, access traffic tunnels, tailgate transport tunnels, ventilation and safety tunnels, busbar tunnels, traffic cable tunnels, 500kV cable outlet tunnels, 500kV cable outlet shafts, drainage systems, a 1.2km-long water delivery system, four diversion inclined wells, pipe racks, and a gas-insulated switchyard (GIS).
Reservoir and dam details
The upper reservoir, located in the Kengweigou ditch, consists of a 33.5m-high roller-compacted auxiliary dam with a dam crest width of 7m. It is divided into 16 dam sections without spillways.
The roller-compacted concrete gravity dam of the lower reservoir on the Qibu River is 108m-tall and has a crest length of 225m and a crest elevation of 306m. The lower reservoir comprises four tunnels, including a bypass tunnel, a diversion tunnel, a lower foundation tunnel, and an upper dam tunnel.
Infrastructure facilities to support construction
The supporting facilities for the construction of the Zhouning pumped-storage power station include a steel bar processing plant, a formwork processing plant, a mechanical repair plant, a 32t construction bridge crane, two 250t bridge cranes, a warehouse, a hydraulic jack-steel strand, and a 12t winch.
The electricity generated by the Zhouning pumped-storage power station will be evacuated through a 500kV power transmission line.
Harbin Electric was contracted for the supply of four pump-turbine units for the hydroelectric facility.
The 16th Bureau of Hydropower won the contract for the civil construction and electromechanical installation works of the underground powerhouse in April 2019. It was also contracted for the lower reservoir construction works in March 2017.
The 12th Bureau of Hydropower was contracted for the construction works related to the water delivery system as well as the underground powerhouse in December 2016. It was also contracted for the early-stage traffic tunnel construction works in December 2015.


The power plant is located in Kosovo.
The project was divided on two stages:
For the first stage the scope of delivery of VAPTECH includes turbines, generators, plant automation, plant middle voltage electrical system and equipment installation. The project is based on one Francis machine with horizontal shaft arrangement. Rated output is 2710 kW.
For the second stage the scope of delivery VAPTECH includes modernization of the existing two Francis type turbines, modernization of the existing main inlet valves, delivery of new hydraulic governor systems, modernization of the existing generators, implementation of the new digital control and monitoring system.
This is VAPTECH third launched project in Kosovo.
For other hydro projects please visit the project section.


Nehemiah Wall at Klang River, Kuala Lumpur
Client : Projek Lintasan Kota Sdn Bhd
Consultant : Ranhill Bersekutu Sdn Bhd
Completion : September 1999
A total of 750m long of river wall was constructed on the banks of Klang River, Kuala Lumpur stretching from Jalan Sultan Ismail to Jalan Tun Razak using the Nehemiah Wall technology. The river wall was needed to increase the flow capacity of the river, to gain precious land along the prime area of Kuala Lumpur city and to provide the needed right of way for the Project Lintasan Kota Elevated Highway.
The design of the AE river wall is similar to the design of AE wall on land except that adequate considerations need to be provided for hydrostatic pressure, buoyancy, drainage and scouring protection at the toe. A typical section is as shown in the sketch below.


Lesotho has revealed that tenders for interested construction companies for the construction of the Polihali Transfer Tunnel must be submitted by August 30.
The Lesotho Highlands Development Authority (LHDA) issued a tender for the construction of the Polihali Transfer Tunnel, with a tender for the construction of the Polihali Dam to follow shortly.
“Our objective is to attract firms with experience in the construction of major underground works under complex geological and geotechnical conditions, diverse environmental conditions, in remote areas and at high altitude. Equally important is to attract firms that have impeccable records in delivering projects of this magnitude within budget and the set timeframes,” LHDA CEO Tente Tente said.
With the water delivery scheduled for 2027, the timeous construction of the dam and transfer tunnel is critical to meeting the water delivery deadline of the project.
The 38-km-long Polihali Transfer Tunnel, with a 5 m nominal bore, will transfer water by gravity from Polihali to the Katse reservoir. Tunnel boring and drill and blast methods will be used to excavate the tunnel.
The Polihali dam will create a reservoir on the Senqu and Khubelu rivers with an estimated surface area of 5 053 ha and a full supply storage capacity of 2.325-billion cubic metres.
The flow from the Polihali reservoir through the transfer tunnel will increase the volume of water in the Katse dam.
“The current water transfer volumes of 780-million cubic metres a year to the Gauteng region of South Africa will incrementally increase to 1.27-billion cubic metres a year, and will simultaneously increase the electricity generation at the ‘Muela hydropower plant, a further step in the process of securing an independent power supply to meet Lesotho’s domestic needs,” he said.
The Metsi a Senqu-Khubelu Consultants (MSKC) joint venture, which comprises Lesotho-based FM Associates and South African firms Zutari, Hatch Africa, Knight Piesold and SMEC South Africa, was awarded the contract for the design and construction supervision of the Polihali Transfer Tunnel and its secondary structures.
“The tender for the construction procurement of the transfer tunnel is launched as construction activity on ten advance infrastructure contracts progresses steadily, with some contracts expected to be completed in 2021, including the Polihali diversion tunnels,” Tente added.
Cumulative excavation progress in both tunnels is in the order of 1 243 m out of a total of 1 810 m to date. Construction of the 33 kV line, which will provide a temporary power supply to the Polihali village, was completed in 2020.
Work on the 132 kV line has advanced with the construction of access roads, 91 tower foundations and the erection of 84 towers out of a total of 93.
The Polihali and Katse civil works, access roads, pipe laying for potable water and sewerage lines has been completed, and construction on Phase II main access roads is progressing well.


Shea's Creek and new shared path
We have widened Shea’s Creek stormwater channel. Widening the channel will increase the stormwater capacity and assist in reducing flooding at Huntley Street. We have started installing the sandstone finish in channel. We will soon start landscaping beside the new shared path with native plants.
This work is expected to be completed in mid-2018.


Ilham Aliyev attended the opening of hydroelectric power station “Ismayilli-1” built near Sumagalli village of Ismayilli District14 august 2013, 13:50
President of the Republic of Azerbaijan Ilham Aliyev has attended the opening of hydroelectric power station “Ismayilli-1” built near Sumagalli village of Ismayilli District.
The president of the “AzerEnergy” OJSC, Etibar Pirverdiyev, informed the President of Azerbaijan that hydroelectric power station "Ismayilli-1" is a facility built as part of a program on the rational use of alternative energy sources. The construction of small hydroelectric plants saves fuel in electricity generation, while at the same time not causing any damage to the environment.
President Ilham Aliyev was informed about the construction of the station, its activities and main components of the project. It was indicated that the construction of the station had begun in 2011. The delivery of the main and auxiliary equipment, as well as all of the construction and assembly work, was carried out by “Azenco”. A total of 100 people worked on the construction of the station. A water intake plant, three pipelines 2,115 meters in length and 800 millimeters in diameter each and a building of the station built during construction.
In the lobby of the station there is a photo stand describing the attention of nationwide leader Heydar Aliyev and President Ilham Aliyev to the development of power engineering in Azerbaijan, as well as the projects undertaken for the modernization of the industry. The building operates control, protection and management systems.
President Ilham Aliyev launched the station from a control center.
It was noted that the station consists of three turbines with a combined design capacity of 1,600 kilowatts and three hydro generators. It has a 10/0.4-kilovolt substation and transmission lines.
The treated water flowing downstream from the station will be supplied to hydroelectric power plant "Ismayilli-2", which is still under construction Thus, the Ismayilli power station will become a cascade of small hydroelectric power plants with a total capacity of 3,200 kilowatts. This project is very effective and significant. The diversion-type hydropower plant being constructed near the village of Sumagalli is capable of generating 8,000,000 kilowatt-hours of clean electricity annually.
Twelve people will be provided with permanent jobs at the power plant. The station has been landscaped and a modern lighting system installed.
The President of Azerbaijan expressed his satisfaction with the work done and gave further instructions.


The low lead relief valve protects tank systems from pressure buildup. It is recommended for use on all submersible pumps or systems that build more than 75 PSI. The solid-brass design meets federal low lead regulation. This valve will fit 1/2 in. pipe.
- Starts to relieve pressure at 75 PSI
- Heavy brass with stainless steel control springs
- Not for use with water heaters
- Solid-brass design meets federal low lead regulations
- Fits 1/2 in. pipe
- 1/2 in. discharge port


Waterway: Oswego R
License issued: 11/22/1991
License expires: 10/31/2031
The project is located at the Lock and Dam No. 6 on the Oswego River, in Oswego County, New York, 1.8 miles from its mouth at Lake Ontario.
The existing project facilities consist of a 35-foot-high, 500-foot-long dam with 10-inch-high flashboards, an existing navigation lock, an impoundment with a surface area of 240 acres and a storage capacity of 3,927 acre-feet, a forebay headgate structure, and a powerhouse containing four vertical propeller turbine-generator units with a combined rated capacity of 7,600 kW.
|License Order Issued||11-22-1991|


From CSKT Natural Resources
Crow Dam impounds approximately 10,350 acre-feet of water, primarily used for irrigation. The dam was completed in 1933 and included a conveyance channel (spillway) beneath Crow Dam Road and pipe (outlet works) to release water from the Lower Crow Reservoir to Crow Creek. The spillway and outlet works have worn out and will be replaced in multiple phases. The construction dollars are provided through BIA.
This project has been divided up into four phases of work. The first two phases of the project are replacing the spillway. The first phase of replacing the lower portion of the spillway began in May of 2018 and completed in July of 2019. The second phase of work on the upper portion of the spillway will include a concrete inlet structure (weir), which is used to control the reservoir level, is set to begin in 2020. The third phase of the project will include tunneling for a new pipe (outlet works) through the dam that will allow water to be released from the reservoir to the lower Crow Creek for irrigation releases as well as in stream flow releases. The final phase of work will be placing compacted earth fill on the downstream toe of the dam protect the dam during seismic events.
The estimated construction window for Phase 2 is 15-18 months, weather depending, with a tentative start date of March 2020, and a tentative ending date of August 2021. During construction, Crow Dam road will be temporarily closed in the vicinity of Crow Dam.
In addition, annual inspections are conducted on all reservoirs found within the boundaries of the Flathead Indian Reservation. These inspections give maintenance recommendations if needed, these recommendations are prioritized, and funding is secured for the project.
For more information, contact Dan Lozar, Division of Engineering and Water Resources Manager or Gregory Wilson, SOD Program Manager Safety of Dams for the Confederated Salish & Kootenai Tribes, at (406) 675-2700.


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The Hydraulic Investigator is a selection guide for it's centrifugal pumps.
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The program can be used to analyze various hydrologic and hydraulic conditions.
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Combines circuit design, simulation and CAD manufacture to realize projects.
It helps you make electronic circuit diagrams and export them as images.
Circuit Magic is an electrical circuits simulation program.
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Design and manufacture electronic circuit boards with multiple layers.
Capture schematics and design PCB boards and layouts.
Visual Hydraulics is a hydraulic design and simulation package.
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EasyValve allows you to proficiently create your hydraulic circuit schematic.
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Lumerical INTERCONNECT is a photonic integrated circuit design environment.
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Create mechanical circuit diagrams with pneumatic and hydraulic components.
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HWPipe is the Hazen Williams Hydraulic Design Software.
THis app performs hydraulic design and rating calculations for packed columns.
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Power Flow Analysis and Control Design of a Vehicular Hydraulic Energystorage Transmission System 952135
A novel hydraulic transmission system-Hydraulic Energystorage Transmission System(HESTS) which contains a Hydraulic Continuously Variable Transmission(HCVT) and a flow controllable accumulator is proposed. The power flows of the HESTS has been analyzed. Computer simulations show the potentialities of improving fuel economy of a vehicle with a HESTS. A fuzzy logic controller with two regulating factors is developed to improve the performance of the HESTS with variable loads.


Delafield Corporation integrates Parker Hydraulic Cartridges in engineered and manufactured hydraulic products. Parker Hydraulic Cartridges are designed to exceed the most demanding of applications.
- Operating Temperature to 400° F
- Wide range of fluid compatibility
- Bore Sizes: 1.50″ through 8.00″; rod diameters 1.000″ through 5.500″
- Stainless steel springs loads both dynamic and static piston seal lips
- Manufacturer warranty


Imereri Region - Georgia
JSC Namakhvani hpp Cascade
2012 - 2017
Description for Namakhvani Hydropower (Georgia)
Namakhvani hydropower cascade, envisages the construction of two hydropower schemes on the Rioni River with a total installed capacity of 435 MW.
The project stems from the need to satisfy the country's growing electricity demand, followed by Georgia's desire to be independent from an energy point of view. Therefore the main objective of the project is to increase the hydroelectric generation capacity of the country by exploiting the available water potential of the Rioni river. This will improve the country's energy security, reduce dependence on oil and also allow to export electricity during the period September-April, primarily to Turkey.
Studio Pietrangeli is very proud of assisting Georgia’s Government providing all the engineering services for the preparation and implementation of the construction of the project, contributing to make Georgia, as member of Energy Community, play an important role in the planned integration of power systems and energy trading with Turkey, Russia, Azerbaijan and Armenia.
The two hydropower plants, Tvishi and Namakhvani, have an Installed power of 100 MW and 335 MW respectively.
Both projects include RCC dams. Tvishi includes a gravity dam, 56 m high, while Namakhvani includes an RCC arch gravity dam, about 100 m high.
The modern technology of Roller Compacted Concrete (RCC) is adopted since guarantees shorter construction period and lower costs (lower cement content, faster on site work, etc.).
The waterways consists mainly in power tunnels, varying from 0.3 km (Tvishi) to 4.3 km (Namakhvani) of length.
The two power waterwyas are outdoor type.
An alternative layout adding a third plant, Zhoneti hpp, was carefully studied.
TVISHI ( IP=100 MW ):
- RCC Gravity dam ( H = 57 m )
- Spillway ( Q = 2,250 m³/sec )
- Low pressure gallery ( D=9 m L = 337 m )
- Power House ( open air type, N° 2 Kaplan turbines IP = 2x50 MW )
- High voltage Substation
NAMAKHVANI ( IP=335 MW ):
- RCC arch-gravity dam ( H = 99 m )
- Main Power house ( open air type, N° 3 Francis turbines IP =3x107 MW )
- Spillway ( Q = 2,670 m³/sec )
- Power tunnel ( D=9 m L = 4.3 km )
- Main Substation: GIS Switchgear, 220kV
Malagarasi Hydropower (Tanzania)
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Stølsdal Power Plant is located by the Ulla-Førre watercourses in Hjelmeland municipality, Rogaland county.
The power plant was commissioned in 1986. The power plant utilises a 103-metre waterfall from the lakes Kvivatnet and Bjørndalsvatnet down to Botsvatn. The power plant has a Francis turbine and an installed output of 17 MW for power production.
After production, the water can be pumped up into the intake reservoir for Kvilldal Power Plant. The installed pump capacity is 2x3 MW. Vassbotnvatnet lake is used as a regulation reservoir for the pumping station. The lake can be regulated between 475 and 470 metres above sea level.
Statkraft Energi AS is responsible for operation of Stølsdal Power Plant.
Owners: Statkraft 79.6%, Lyse 13.6%, Skagerak Kraft AS 1.5%, Agder Energi AS 6%.


Poplar Island – Easton, MD
This project is a continuation of the construction of the area’s lateral expansion. Work includes the construction of the armored containment dikes, widening of existing dikes, demolition of an existing wetland spillway structure, and construction of a new upland spillway structure. Dike construction will be accomplished by mechanical placement using sand from designated stockpile areas and stone to be quarried and shipped to the site. Work includes placement of sand, geotextile fabric, and stone, and seeding.
AT A GLANCE
|TITAN Role||Quality Control (QC) Manager / Site Safety & Health Officer (SSHO) Duel Hat|


VERTICAL DOUBLE SUCTION ELECTROPUMPS(DSPV)
Vertical single stage axially split volute casing pump with double entry radial impeller.
Compact design makes vertical electropumps suitable choice for pumping stations.
Vertical double suction electropump (DSPV) is an exclusively designed in PUMPIRAN company based on customer’s demand.
The pump is equipped with hydro-dynamic bearing with cooling system and minimum maintenance is required.
For water works, irrigation and drainage pumping stations, power plants, industrial water supply systems, fire fighting systems, marine applications as well as general applications in refineries.
Output size: Up to 700 mm
Capacity: Up to 9000 m³/h
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Operating temperature : Up to 140ºC
Test pressure: 30 bar


Product Price :Get Latest PriceProduct Details:
|Model Name/Number||LCP 50, LCP 75, LCP100|
|Max Flow Rate||31|
|Motor Power||5 HP|
|Usage/Application||Plating, Rinsing, Filtration Waste Water Treatment, Scrubbers|
|I Deal In||New Only|
Chemical injection pumps are designed to improve well production, pipeline flow, and reduce corrosion. They operate under specific chemical and fluid requirements depending on the temperature and pressure with which the injection pump will be working at.
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IMPROVEMENT TO KALLANG RIVER BETWEEN BISHAN ROAD AND BRADDELL ROADKoh Brothers has undertaken this 1.8 kilometre drainage upgrading project of the Kallang River between Bishan Road and Braddell Road. This project by PUB, the national water agency is to increase the capacity of the drainage through deepening and widening of the existing waterway with the implementation of PUB’s Active, Beautiful, Clean Waters (ABC Waters) to this segment of the Kallang River. The upgrading works will also include the construction of a new Kallang park connector and Linear Park.
Construction and Architectural Works
- Construction works at the cycling ramp inclusive of the connection to the Pedestrian Overhead Bridge (POB) at Braddell Road was completed on 31 October 2019.
- Architectural phase works such safety railings and granolithic floor finish is ongoing at the cycling ramp.
Casting, Safety Railings and Floor Finishing
- Construction works such as casting is ongoing at the cycling ramp. The last segment of works at the cycling ramp will be the connection to the new Pedestrian Overhead Bridge (POB) which will be carried out in mid October.
- Architectural phase works such safety railings and granolithic floor finish is ongoing concurrently with the remaining superstructure works of the cycling ramp.


Maafushi Harbor development in full swing
The K. Maafushi Harbor development work is well underway.
Maldives Transport and Contracting Company (MTCC) said in its latest project update that they started installation of concrete blocks required for quay wall construction two days ago.
Scope of works will include:
- 63,711cbm new harbor basin dredging operations,
- 28,836cbm maintenance dredging operations,
- 4,414cbm channel dredging operations,
- construction of a 31m breakwater,
- a 680m rock boulder revetment,
- a 700m geo bag revetment,
- a 374m quay wall,
- construction of a concrete jetty, etc.
The value of the project is MVR 76.48 million ($5 million).


Today we're honouring the inventor of the Submersible Pump, Armais Aruntunoff!
"1928 Russian oil delivery system engineer and inventor Armais Arutunoff successfully installed the first submersible oil pump. In 1929, Pleuger Pumps pioneered the design of the submersible turbine pump, the forerunner of the modern multi-stage submersible pump. In the mid 1960s the first fully submersible deep-well water pump was developed." ~ Wikipedia
If history's your thing, read more about Aruntoff and the submersible pump's historical development here.


The East Water Street Road Reconstruction is a partnership project with the City of Syracuse. The County green infrastructure work will be completed in advance of the City’s mill and pave project on East Water Street between Forman Avenue and Pine Street. By partnering with the City, the County is able to save capital dollars on restoration costs. The project began construction during the third quarter of 2021 and the infiltration trenches along the first block of the project were completed. The project was completed during the 2022 construction season.
For the green infrastructure project, 7 infiltration trenches are planned to be constructed to capture stormwater runoff that was previously entering the CSO 027 combined sewer. CSO 027 is one of the highest priority combined sewers remaining in the combined sewer system. Construction of the green infrastructure will involve connecting existing catch basins to infiltration trenches constructed underneath the road, where the stormwater will be stored and infiltrated into the ground. Incorporating green infrastructure into this portion of East Water Street will provide a significant benefit to the CSO basin 027 by removing 2.22 million gallons of stormwater runoff annually from the tributary combined sewers.
Download project details below:


Yangliutan is a 54MW hydro power project. It is located on Hengjiang river/basin in Yunnan, China. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. The project construction commenced in 2008 and subsequently entered into commercial operation in 2010. Buy the profile here.
The project is developed and owned by Hengjiang Electric Co., Ltd, Sichuan Yibin Yili Group.
The project generated 219.54 GWh of electricity. The project cost is $58.4m.
The project construction commenced in 2008 and subsequently entered into commercial operation in 2010.
Power purchase agreement
The power generated from the project is sold to China Southern Power Grid under a power purchase agreement.
Sichuan Dongfeng Electric Machinery Works was selected as the turbine supplier for the hydro power project. The company provided 3 units of kaplan turbines, each with 18MW nameplate capacity.
Sichuan Dongfeng Electric Machinery Works supplied electric generator(s) for the project.
For more details on Yangliutan, buy the profile here.


Dankali depression - Eritrea
Salini Costruttori S.p.A.
1997 - 2000
Description for Dankel (Eritrea)
Multi-purpose project (underground hydropower plant, water supply, etc.) for the utilization of the Red Sea water.
- External port (Red Sea)
- Internal port for commercial and industrial use
- Canal A -navigable (L = 30 km, W = 15-50 m, d = 9 m)
- Sariga Dam –rockfill (L_crest = 1.5 km, H = 18 m)
- Canal B – navigable (L = 23 km, W = 30-60 m, d = 9 m)
- Mendah Dam – concrete (L_crest = 300 m, H = 22 m)
- Hydro-Power plant (IP = 500 MW, E = 1'000 GWh, No 2 Francis turbines)
- Tailrace tunnel (L = 6 km, D = 10 m)
- Transmission line - 132 kV (L = 480 km)
NAO (Sierra Leone)
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Kabwe urban water supply scheme.
Reservoir storage capacity: 12 Mm³.
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Santu Miali (Italy)
Refurbishment of the Santu Miali hydropower plant
Alto Temo (Italy)
Water storage plant for irrigation purposes with a capacity of 90 Mm³
Ruzizi Transmission Lines
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Uribante Doradas (Venezuela)
Hydroelectric project with IP = 300 MW.
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San Lorenzo (Italy)
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Bajo Frio is a 58MW hydro power project. It is located on Chiriqui Viejo river/basin in Chiriqui, Panama. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. The project construction commenced in 2011 and subsequently entered into commercial operation in 2015. Buy the profile here.
The project was developed by Agua Imara. Agua Imara and Credicorp are currently owning the project having ownership stake of 50.1% and 49.9% respectively.
Bajo Frio is a run-of-river project. The hydro reservoir capacity is 8.9 million cubic meter. The net head of the project is 62.38m. The project generated 248 GWh of electricity. The project cost is $224m.
The hydro power project consists of 1 turbine.
The hydro power project consists of 6 turbines.
The project construction commenced in 2011 and subsequently entered into commercial operation in 2015.
Indar Electric supplied 1 electric generator for the project. The generator capacity is 2.35 MVA.
Indar Electric supplied 6 electric generators for the project. The generator capacity is 10.28 MVA.
For more details on Bajo Frio, buy the profile here.
About Agua Imara
Agua Imara AS (formerly SN Power AfriCA AS) is a joint venture company formed by Statkraft Norfund Power Invest AS (SN Power) and Norfund. It is engaged in hydro power generation and focuses on investing in Africa and Central America. It operates as a separate entity under the SN Power brand.


Vexve ball and butterfly valves were used in the Xingtai district heating company's 20 km long transfer line.
Vexve’s range of valve solutions for energy distribution networks includes underground ball and butterfly valves for pre-insulated, direct buried and chamber installations. We also offer a full range of service valves for pre-insulated valve elements as well as branching and hot-tapping valves specifically designed for branching of new and existing pipelines. Our range of hydraulic valve operating systems and plastic valve chamber allows maximizing the benefits of direct-buried valves.
Vexve valves and technical expertise were utilized in Riikinvoima’s and Varkauden Aluelämpö’s joint district heat pump station project.
Vexve’s valves and hydraulic control products were chosen for the A2A Group’s new ring network at San Siro district in Milan.
In a district heating network renovation, Kotkan Energia chose Vexve valves with hydraulic control solutions to enable remote valve control.
Lusail, one of the world's largest construction projects, utilizes Vexve's products in its district cooling network.
Vexve valves for installation in the St Petersburg gas network pass strict quality assurance.
To ensure trouble free energy distribution Vexve hydraulic valve controls are installed in Tjumen.
Vexve's products enable remote control of valves in the Växjö district heating network.


Enter value and click on calculate. Result will be displayed.
Capacity (Cubic Inches) = `[Leng th×3.1415×Diameter^2]/4 `
Capacity (Gallons) = `[Capacity(Cubic Inches)]/231 `
Storage tank capacity concept
It refers to the capacity calculated according to the geometric dimensions of the storage tank and expressed as an integer after rounding. In general, the nominal capacity is smaller than the calculated capacity.
② Computing capacity
It refers to the capacity calculated according to the geometric dimensions of the storage tank. The calculated capacity is πR2H (R is the inner radius of the storage tank; H is the height of the tank wall).
It refers to the maximum capacity that the storage tank can actually store. The calculated capacity minus the unusable capacity of the upper part of the storage tank is the storage capacity. The storage capacity is πR2H1 (R is the inner radius of the storage tank; H1 is the highest liquid level height).
Also called working capacity, it refers to the capacity between the maximum allowable working liquid level and the allowed minimum working liquid level in the storage tank. It is an important parameter in determining the nominal capacity of the storage tank. The effective capacity is πR2(H1-H2) (R is the inner radius of the storage tank, H1 is the allowable maximum working liquid level height, and H2 is the allowable minimum working liquid level height).


Construction of the Elwood Dam Rehabilitation project began in fall 2023. The project will address seepage issues at Elwood Dam, located in north central Gosper County, Nebraska, which are currently limiting storage levels. RJH led the design and is currently providing resident engineer services. Rehabilitation will include installation of a toe drain, weighted filter, and blanket drain. Construction is anticipated to be completed in summer 2024.


- Flood Warning issued April 28 at 10:14AM CDT until April 29 at 7:18PM CDT by NWS
- Effective: 10:14 a.m. on Thursday, April 28, 2016
- Expires: 7:18 p.m. on Friday, April 29, 2016
...The Flood Warning continues for the following rivers in
Grand River near Pattonsburg affecting Daviess and Gentry Counties.
Grand River near Gallatin affecting Daviess and Livingston Counties.
Grand River near Chillicothe affecting Linn and Livingston Counties.
Grand River near Sumner affecting Carroll...Chariton...Linn and
Grand River near Brunswick affecting Carroll and Chariton Counties.
The Flood Warning continues for
The Grand River near Gallatin.
* until Friday evening.
* At 9:45 AM Thursday the stage was 27.3 feet.
* Flood stage is 26.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
* At 26.0 feet...Low-lying woodlands and farmland along the river
Location FS Stage Day/Time Forecast
Gallatin 26 27.3 Thu 10 AM 27.0 this afternoon
- See more at NOAA


KATHMANDU: The Department of Electricity Development (DoED) is calling for a tender for the second time for the civil and hydromechanical part of Lot 1 of the 20-MW Budhiganga semi-reservoir hydropower project in Sudurpaschim Province. The second bid is to be announced after no aspirant firms met the required qualification in the first call. DoED officials said the construction will start once the selection of qualified bidders is completed.
The department has also informed that a consultant has been selected to supervise the construction work of the project which is in the contract stage. The goal of this project is to complete its construction and generate electricity within the year 2025. Total 250 ropani lands required for the project’s dam, powerhouse, campsite, substation, and office building, and 20 acres for reservoir have also been acquired. The construction work of the office building and residence and the necessary camp at the project site have been completed. The department said that the necessary access road and bridge construction work to reach the place where all the structures of the project will be located is being completed. The department plans to acquire the land required for the Transmission Line (TL) of the project in the next financial year.
The preliminary environmental study of the TL alignment has been completed. After the construction of the project is completed, the generated electricity will be brought and connected to the Pahalmanpur substation in Kailali, 81.70 km away from the power plant. This project will produce 109.07-gigawatt hours of electricity annually when it is completed and operational. Two Francis turbines of 10 MW capacity will be installed in the power plant. The 132 KV TL up to the Pahalmanpur substation will be constructed by the project itself. The cost of completing the project is estimated at Rs10.33 rupees. An agreement was signed in 2012 between the government and the Kuwaiti Fund for Arab Economic Development for the construction of the Budhiganga hydropower project. An agreement has been reached between the government and the Saudi Development Fund in 2014 for Saudi Arabia’s investment in the project.


Lee Hall Dam Replacement
Updated May 2017
In 2015, City Council appropriated $16.7 million to replace the Lee Hall Reservoir Dam with a new dam that meets or exceeds all dam safety regulations that had been enacted in recent years. The contractor began work in August 2015 and construction is ongoing. The project is divided into four phases to sequence the work in a way that mitigates flood risks while still allowing for shared uses of the reservoir by stakeholders.
Phases 1 and 2 of this project has been completed and Phase 3 is underway. Phase 1 activities to construct a new 165’ wide concrete principal spillway channel were completed in mid-2016. Phase 2 activities to construct the new 1,115 foot long armored emergency spillway embankment were completed in late 2016. Phase 3, which is currently underway is scheduled for completion by mid-2017 includes a new outlet works facility. Phase 4 activities to complete the new principal spillway, remove the old hydraulic controls from the Lee Hall Upper pool, and complete the project are scheduled for a late 2017 completion.
The new Lee Hall Dam replaces a 100+ year old dam infrastructure. The City’s investment in this critical infrastructure should provide many decades of protection to the Peninsula’s water supply and flood protection for downstream properties.
Updated: September 2016
A significant amount of work has been completed to include the relocation of a high-pressure petroleum pipeline and a 30-inch finished water pipeline, both of which were needed to accommodate the expanded footprint of the new dam. Construction of the concrete principal spillway channel is nearly complete, and construction of an armored emergency spillway is underway and should be completed in early 2017.
Because the Lee Hall treatment plant must remain in service during construction, construction of the new dam’s concrete principal spillway is a complex operation. Staff has taken special care to ensure that the ability to pump source water from the reservoir is not be impeded during the project.
__________________Updated: June 2016Construction for the new Lee Hall Reservoir Dam is underway. In May 2015, City Council appropriated $16.7 million to replace the 100 year old Lee Hall Reservoir Dam with a new dam that meets all dam safety regulations implemented in recent years. Lee Hall Reservoir plays a central role in the Peninsula’s drinking water supply and recreation for Newport News Park. As such, a great deal of planning and coordination went into allowing for the shared uses of the reservoir while still meeting the practical construction requirements for the replacement of this 19th century dam with a 21st century state of the art facility. The City’s investment in this critical infrastructure should provide many decades of protection to the Peninsula’s water supply and flood protection for downstream properties.
Construction for this project began in August 2015. The scope of the project includes the total demolition and replacement of the Lee Hall Lower Dam, the construction of a new armored auxiliary spillway, the removal of hydraulic control structures on the Lee Hall Upper Outlet Works, and the construction of a new Lee Hall Outlet Works facility. Many ancillary construction efforts are required to successfully build the proposed facilities including: utility relocations, culvert and curb modifications at Fort Eustis Boulevard, and a continuous dewatering operation to provide the appropriate conditions for construction of new facilities.
The project is divided into four phases to sequence the work in a way that mitigates flood risks while still allowing for shared uses of the reservoir by stakeholders. Phase 1 construction activities are wrapping up this summer. Construction for this project should conclude in late 2017.


drip irrigation system
• Flexibility to increase and decrease the flow without sacrificing uniformity
• Exceptional coupling with a type of pressure reducing channel (patented).
• High resistance to clogging of double internal filters.
• Wide range of spacing between drippers (20 and 30 cm) -without additional cost- which allows greater precision and flexibility in the design of your system.
• Low energy cost due to the low pressure required.
IRRIGATION TAPE WITH TURBULENT LABYRINTH DRIPPER


The Hawe NSWP valve is a directional spool valve. It is used to control the direction and the velocity of flow in single and double-acting hydraulic consumers.
The NSWP series is available as a manifold mounting valve and with a nominal size 6 hole pattern (NG 6). The flexibility of this valve type allows it to be adapted to different control tasks through additional functions in the pump line and/or on the consumer side (e.g. restrictors, restrictor check valves). Intended applications for this valve industrial hydraulics, in particular, machine tools.
Whilst the proportional functions of the Hawe NSWP are easy to control this type still offers a large range of variants. The valve configuration also allows them to be combined with with NG6 sub-plates (type BA2). If required, this range of valve can be configured with compact valve banks.
Key technical specifications of the Hawe NSWP include:
- Maximum pressure: 315 bar
- Flow rate: 25 litres per minute
Common applications inlcude: machine tools; construction and construction materials machinery; offshore and marine technology and road vehicles.
Contact us for further technical details and configuration options.


Ukraine’s hydroelectric plants change operation after dam collapse- state operator
Ukraine is balancing the power system after the collapse of the Nova Kakhovka dam in southern Kherson region, changing the operation mode of the other hydroelectric power plants, state energy company Ukrenergo said on Wednesday.
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In a statement, Ukrenergo said the hydroelectric power plants are reducing generation to reduce the volume of water entering the Kakhovka reservoir to reduce flooding.
Ukraine continues exporting electricity to Poland and importing from Slovakia, except for the evening peak consumption.
While electricity generation is now sufficient to meet the consumers’ needs, Ukrenergo calls for conserving energy consumption as the power system has fewer power generating units due to maintenance.
In other developments, Russia’s attacks continue to target Ukraine’s power system, with distribution networks damaged in the Sumy region, in eastern Ukraine. The territory of a power plant was also targeted in the Donetsk region, but the plant is still operating.
Russia blew up the Kakhovka hydroelectric power plant overnight on Tuesday, leading to the breach of the dam and unleashing floodwater across the downstream area.
By early Wednesday, flooding was slowly decreasing in the Kherson region, in southern Ukraine, but the water level is expected to increase by the end of the day, local authorities say.


Jacket Cooled Stainless Steel Submersible Drainage Pump for Clear and Drainage Water – CR253
Fully submersible, compact integrated motor-pump unit consisting of:
- Pump: Single stage stainless steel centrifugal pump with cooling jacket and vertical discharge G 1¼ F. Discharge connection with integrated non-return valve. Impeller: Open multi-channel impeller, spherical clearance 10 mm.
- Motor: Fully submersible, pressure tight electric motor. Stainless steel motor and pump housing. Insulation class F. Motor protection IPX 8. Thermal sensors imbedded in the motor winding. Rotor shaft from stainless steel with ceramic coated sealing surface, pre-lubricated bearings.
- Seals: Triple lip-seal


Iringa - Tanzania
Zarubezhstroy Ojsc (Beneficiary: Tanzania, Ministry of Energy and Minerals)
2011 - in progress
Description for Rumakali Hydropower (Tanzania)
Hydroelectric Power Plant, with IP = 525 MW, which the exploits of N° 5 catchment areas, providing a total of Q = 23 m³/s and a geodetic head of 1,423 m.
- Rumakali Dam ( Rockfill dam, H = 93 m, L = 800 m )
- North Site main Dam ( Rockfill dam, H=71 m )
- East Site main Dam ( Rockfill dam, H= 140 m )
- Free-Flow Spillway ( Rumakali dam, Q = 350 m³/s )
- Power Waterways ( Rumakali Head Race Canal L = 4.5 km, West Site Canal L = 3.8 km, East Site Pipe Line HP L= 2,4 km )
- Open Air Pumping Station ( Q = 19.5 m³/s )
- Power House ( Underground, 90 x 23 x 44 m, Head = 1,423 m, Q = 41 m³/s, N°4 Turbines Pelton )
- Transmission line ( V = 220 kV, L = 94 km )
Roma Est Sewage Plant (Italy)
Sewage treatment plant for domestic and industrial waste water.
Limonlu Hydropower (Turkey)
Limonlu HPP comprises 4 power plants in cascade to be constructed in 2 phases...
Beles Multi-purpose Project (Ethiopia)
Multi-purpose project on Lake Tana, including hydropower plant and irrigation...
San Lorenzo Hydropower (Italy)
San Lorenzo (Sestu) is a small hydroelectric plant to supply the water...
Bwari Aqueduct (Nigeria)
Water supply system for the district of Abuja, including pipelines, pumping...
Kikonge Multi-Purpose Project (Tanzania)
Kikonge is a multipurpose project foreseen for...
Casteddu Irrigation Project (Italy)
Three-dam projects for irrigation purposes.
Porto Romano Multi-Purpose Project (Italy)
Yacht Harbour is on the right side of the Tevere River floodplain, about 1 km...
Uribante Doradas Hydropower (Venezuela)
Hydroelectric project with IP = 300 MW.


Separate contracts were signed for the power transmission lines to Kunar and Paktika provinces and construction of substations.
The Office of the President, ARG Palace, said the contracts were signed by senior presidential adviser and acting finance minister Dr. Humayoun Qayoumi, minister of agriculture and livestock Nasir Ahmad Durani, U.S. Ambassador, deputy chief of USAID, Asia Development Bank director, and Da Afghanistan Breshna Sherkat.
According to a statement released by ARG Palace, a 270 kilometer water canal would also be built in Khush Tapa area which would irrigate 500,000 hectares of land. The feasibility study of the project in Kunduz, Jawzjan, and Balkh provinces will be completed over a period of 12 months with financial support of $2 million from USAID.
The statement further added that the construction of power transmission line from Nangarhar to Kunar and construction of substation will be completed in two years. The project will be implemented with $60 million financial support of the Asian Development.
According to ARG Palace, similar the construction of power transmission line from Ghazni to Paktika province and construction of a substation will be completed in two years. The Asian Development will also fund the project which would cost around $60 million and would benefit around 30 thousand families in Sharana city.


School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
A mixed flow pump with guide vanes was chosen as research model in this study, and eight parameters of the impeller were selected as optimization variables, including blade outlet inclination angle, blade wrap angle at hub, blade inlet angle and outlet angle at middle stream line, blade outlet width, front shroud inclination angle, hub inclination angle and vane number. Firstly, orthogonal experimental method and CFD numerical simulation method were used to produce samples, then the RBF neural network was adopted to establish the performance prediction model as the objective function, multi-island genetic algorithm was used for solving the objective function at last. Based on all the above, a method of multi-parameter optimization method on energy performance of mixed flow pump without changing the nominal diameter of impeller outlet was proposed and then verified by experiments. By this method, the pump head and efficiency at the design point of the model pump were increased by 11.5% and 4.32%, respectively. Meanwhile, the peak value of pressure pulsation coefficient at pump inlet, impeller outlet, guide vane outlet and pump outlet all decreased obviously, by a maximum decrease of 62.9%. Compared to the original model, the static pressure in the optimization model increased by 30kPa and the gradient of static pressure distribution after optimization becomes larger and more uniform. The turbulent energy intensity at the impeller outlet was reduced by 0.2m2/s2. The pressures at the 60% blade position and 80% blade position both increased by nearly 65kPa and the pressure decreased by 50kPa at the blade pressure side.


Consigliato da 4 persone del luogo
Consigli della gente del posto
Ljósafoss Power Station The oldest power station in the River Sog is located near Ljósafoss by Lake Úlfljótsvatn’s outflow. The station is located on the river bank east of the waterfall, and the water runs through pipes to the station’s turbines and from there into the river below the waterfall. …
Its a small exhibition about electricity. Really interesting specially for children.
Írafossstod Power Station The Írafoss Station harnesses two of the waterfalls, Írafoss and Kistufoss, in the lower part of the River Sog. A dam has been built across the River Sog above Írafoss at virtually the same altitude as the Ljósafoss Station outflow. The station went on-line in 1953 using…


20th February, 2022
The Ethiopian Government, on Sunday, announced its grand hydroelectric dam has started generating electricity.
Prime Minister Abiy Ahmed officially inaugurated the first power generation of the Grand Ethiopian Renaissance Dam (GERD).
It is set to be the largest hydroelectric plant in Africa, state-run Ethiopian Broadcasting Corporation (EBC) reported.
“The dam’s electricity generation is a blessing for the downstream countries too.
“We want to export our pollution-free power to Europe through Sudan and Egypt,”’’ Ahmed said during the inaugural ceremony.
Ethiopia’s state television reported that one of the 13 turbines of the grand dam commenced power generation on Sunday, with a power generating capacity of 375 megawatts of electricity.
The first power generation comes as Ethiopia’s downstream neighbours – Egypt and Sudan – view the dam as a threat to reduce the volume of water reaching their territories.
Addis Ababa claims the dam is essential for its electrification and development and will insignificantly impact the downstream countries.
Ethiopia frequently said the dam is essential for its development and will enable it to distribute power to its population of more than 110 million.
The East African nation had initially planned to generate around 6,500 megawatts of electricity from the dam, which is now 84 per cent complete.
The power generating capacity was later reduced to 5,150 megawatts.
The dam is being built on the Blue Nile River in Ethiopia’s Benishangul-Gumuz Regional State with a designed total water holding capacity of 74 billion cubic metres.


Snowy 2.0 is an expansion of the Snowy Mountains Hydroelectric Scheme, which was commissioned in 1974. It will become Australia’s biggest green energy project and the world’s biggest pumped storage plant, upon completion.
The plant is being developed by Snowy Hydro with an estimated investment of A$5.1bn ($3.62bn) and is expected to be commissioned in 2024.
The Government of New South Wales issued planning approval for exploratory works of the project in February 2019. A comprehensive environmental impact statement (EIS) for the main works of the project is expected to be submitted in 2019.
The plant will help deliver reliable and affordable energy by adding 2GW of hydroelectric generation capacity to the Snowy Scheme, which has an installed capacity of 3.8GW.
Snowy 2.0 hydropower project details
The proposed Snowy 2.0 pumped hydroelectric storage and generation project will involve the construction of a series of 27km of concrete-lined tunnels that will connect the existing Tantangara and Talbingo reservoirs located within the Snowy Scheme in New South Wales.
A new power station with pumping facilities will be built approximately 1km underground between the two reservoirs. It will include six reversible Francis pump-turbine and motor-generator units, of which three units will be of variable speed while the remaining will be of synchronous speed.
The underground power station will also feature a machine and transformer hall with six galleries.
The pressure shaft and penstock will be shared among the units that will be arranged in alternating pairs.
Large volumes of water will be stored in the Tantangara reservoir, which is located at a higher elevation than Talbingo reservoir, and will be used for on-demand electricity generation.
Snowy 2.0 power plant timeline and construction
The feasibility study for the Snowy Mountains Hydroelectric Scheme expansion was published in January 2018, while the final investment decision was achieved in December 2018.
Construction of the project is planned to be completed in five phases. Phase one, which is currently underway, includes exploratory works such as the construction of an exploratory tunnel, portal, construction pad and compound, modernisation of site access roads, and creation of barge infrastructure at Talbingo Reservoir.
The expansion project also involves the construction of intake-outlet structures at both reservoirs, emplacement of excavated rock in Talbingo Reservoir, and supporting infrastructure.
The tunnelling and excavation works will be performed using drill and blast techniques as well as tunnel boring machines.
The existing New South Wales transmission system will be modernised to establish a direct connection between the new power station and major load centres within the state.
A new transmission substation will be constructed in Bago State Forest to link Upper Tumut and Lower Tumut substations.
A pair of new double-circuit transmission lines with a length of 4.5km each will be built between the Snowy Hydro 2.0 generator site and the new Maragle substation.
The Australian Federal Government authorised an investment of A$1.38bn ($981m) for the hydroelectric project in February 2019. The remaining costs will be funded by Snowy Hydro.
The Australian Renewable Energy Agency (ARENA) provided A$8m ($6m) grant for the feasibility study.
SMEC conducted the feasibility study of the Snowy 2.0 hydropower project under a contract awarded by Snowy Hydro in May 2017.
Future Generation, a consortium of Salini Impregilo, Lane, and Clough, was awarded a contract to perform the civil and electro-mechanical works for the Snowy 2.0 hydropower project in April 2019.
Voith Hydro was selected as the preferred contractor to perform electrical and mechanical works as well as to supply the latest hydropower generation technology for the new power plant.
Leed Engineering is responsible for the pre-construction and exploratory works, while TransGrid was appointed to build the transmission lines.
Snowy 2.0 hydropower project benefits
The expansion project will provide 350GWh or 175 hours of energy storage, which is enough to power approximately 500,000 homes during peak demand.
It will also improve local infrastructure and boost the economy through job creation. An estimated 2,400 jobs will be generated during the construction phase and up to 5,000 direct and indirect jobs will be created by the project in the Snowy Mountains region.
The Snowy 2.0 hydropower project will also help reduce the wholesale electricity prices in Australia by addressing power shortages.


The e-580 series has been designed to meet the exacting flow requirements of commercial pools, water features, fountains and waterpark applications. Efficiency has been maximized to reduce operating costs. It is a NSF 50 certified robust inline pump. Features a 304 Stainless Steel impeller trimmed to meet your exacting flow head requirements and reduce operating costs, an internally flushed mechanical seal for extended seal life. The e-580 pump is suitable for both vertical and horizontal installation. Premium efficient motors are available in ODP and TEFC configurations.


BLIKA 10 Ton Hydraulic Cable Crimper Hand Tool for 1/8" to 3/16" Stainless Steel Cable Railing Fittings - Heavy Duty Head with 9 Dies and Cable Cutter, Lug CAC-75-hydraulic-angle-steel-cutter-and-CAC-110-hydraulic CAC-75, CAC-110 hydraulic angle cutter, Jeteco Tools brand portable hydraulic angle steel cutting machine. Cutting max up to 110*110mm angle steel, max up to 8mm thickness. NPT 3/8 quick coulping connector for jointing with hydraulic pump. Hydraulic hand pump, foot pump, electric motor hydraulic pump for optional.
31t Hydraulic Press Angle Iron Rebar Cutter (CAC-75) FOB Price:US $ 140-160 / Piece. Min. Order:1 Piece. Type:C Type Hydraulic Press. Certification:ISO9001, CE. Condition:New. Customized:Customized. Warranty:12 Months. Packing:Wooden Box. China Hydraulic Angle Steel Cutter (HHJG-100) - China Hydraulic Angle Steel Cutter, Hydraulic Cutting Tool, Angle Steel Cutting Tool manufacturer / supplier in China, offering Hydraulic Angle Steel Cutter (HHJG-100), Electric Driven Hydraulic Pump (HHB-700D), 50 Ton Double-Acting Hydraulic Punch (HHM-80) and so on. China Hydraulic Angle Steel Cutter (HHJG-60) - China HHJG angle steel cutter is your ideal choice for cutting angle steel. The tool features quick work, labour saving, noiseless, free of steel scraps, nice and clean cut. It is widely used in bridge and steel construction projects. Model:HHJG-60
CAC-110 Hydraulic Angle Iron Cutter. Net:66 lbs or 30 kgs Gross:70.5 lbs or 32 kgs. Angle Max. Pressure Capacity. Hydraulic Metal Shear Metal Shears - Metal baler Machine This hydraulic metal shear is famous for its crocodile-like design. It is mainly used for cutting various kinds of metal materials in various steel mills, waste steel processing companies, and waste metal recycling processing plants, etc. And the shearing size can be determined according to the specific requirements of customers. Portable metal bending, hydraulic stainless steel hole Hydraulic angle steel cu. Portable hydraulic cutter for angle steel. Customized hole punch. For L steel, H steel hole working. Heavy duty hole punch. 100 ton, 150ton, 200ton, 300 ton hydraulic hole puncher machin G shape hydraulic hole p. Wide working range, G shape hydraulic hole puncher machine. Handheld hole punch
Hydraulic Iron Worker Machine, Punching Machine Power Press, Hydraulic Punching and Shearing Machine manufacturer / supplier in China, offering Q35y Hydraulic Combined Ironworker for Angle Steel Cutting, CNC Sheet Metal Fiber Laser Cutting Machine 500W (3015), Low Cost Stainless Steel Fiber Laser Cutting Machine for Metal Carbon Steel Galvanized Sheet 3000*1500mm 1kw Stainless Steel angle-steel-cutter-bender-hole-punching-machineAngle Steel Processing Machine. Jeteco Tools supply a wide range of angle steel processing machine, such as angle steel cutter, hole puncher, angle cutting machine, and bending tool. Electric motor hydraulic pump operated. In above picture, there shows 4 items:- hydraulic cutting, for cutting off max 110mm*110mm of angle steel sheet.hydraulic steel cutter, hydraulic steel cutter Suppliers Jul 25, 2021 · hydraulic steel cutter, hydraulic steel cutter Suppliers
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Australian Government Bureau of Meteorology, Tasmania
Final Flood Warning for the Macquarie River
Issued at 9:07 am EST on Saturday 13 July 2019
Flood Warning Number: 6
Minor flooding has eased along the Macquarie River around Cressy Pumps. River
levels will fall slowly around Macquarie River above Westmoor during the
No significant rainfall is forecast for the Macquarie River catchment for the
remainder of the weekend.
Strong and dangerous flows will be a hazard over the next couple of days.
Macquarie River - Lake River to Longford:
No further flooding is expected in the Macquarie River - Lake River to Longford.
The Macquarie River above Westmoor is currently at 2.59 metres and falling. The
Macquarie River above Westmoor will remain above the minor flood level (2.00 m)
over the weekend as river levels ease slowly.
The Macquarie River at Cressy Pumps fell below the minor flood level (3.00 m)
during Friday evening and is currently at 2.67 metres and falling.
Flood Safety Advice:
FloodSafe advice is available at www.ses.tas.gov.au
Road closure information is available at www.police.tas.gov.au
For emergency assistance call the SES on telephone number 132 500.
For life threatening situations, call 000 immediately.
This is a final warning, no further warnings will be issued for this event.
Latest River Heights:
Tooms Lake, 1.70, Steady, 07:58 AM SAT 13/07/19
Macquarie River at Trefusis, 0.51, Steady, 08:15 AM SAT 13/07/19
Macquarie River at Mount Morriston, 0.04, Steady, 08:36 AM SAT 13/07/19
Macquarie River at Ross, 0.95, Steady, 08:36 AM SAT 13/07/19
Macquarie River at Fosterville, 0.15, Steady, 08:00 AM SAT 13/07/19
Lake Leake (Lake Level), 2.40, Steady, 08:00 AM SAT 13/07/19
Elizabeth River downstream Lake Leake, 0.06, Steady, 08:00 AM SAT 13/07/19
Macquarie River at Morningside, 1.21, Steady, 08:00 AM SAT 13/07/19
Isis River at Barton, 0.93, Falling, 08:42 AM SAT 13/07/19
Lake River at Parknook, 1.12, Falling, 08:30 AM SAT 13/07/19
Macquarie River above Westmoor, 2.59, Falling, 08:00 AM SAT 13/07/19
Macquarie River at Cressy Pumps, 2.67, Falling, 08:00 AM SAT 13/07/19
This advice is also available by dialling 1300 659 210. Warning, rainfall and
river information are available at www.bom.gov.au/tas/flood. The latest weather
forecast is available at www.bom.gov.au/tas/forecasts.


Milk River Ridge Reservoir
Constructed in 1956 by the Prairie Farm Rehabilitation Administration, the Milk River Ridge Reservoir (MRRR) is an artificial oligotrophic waterbody with storage capacity of 86,437 acre-feet (127,297 Dam3) occupying 15.3 km2 in land area, with a basin area of 168 km2. The reservoir is owned by the Alberta Government and is managed by Alberta Environment and Parks since 1974. The reservoir is within the South Saskatchewan River Basin and is a water source for the communities of Raymond, Warner, New Dayton, Craddock, Wrentham, and Stirling.
The reservoir is supplied water from St. Mary, Belly and Waterton rivers to the St. Mary Reservoir which flows to Jensen Reservoir and into the reservoir via the Waterton-St. Mary Headworks main canal system which is 22km long and consists of two reaches, from Jensen Reservoir to Taylor’s Coulee Chute and the Taylor’s Coulee Chute to the MRRR (21 km). Water from the canal enters the reservoir from the west end and flows through the current wetland. The reservoir was created by the construction of the North Ridge Dam, and the East Ridge Dam. About 98% of the water flows out of the reservoir through the North Ridge Dam to Cross Coulee reservoir, to Raymond Reservoir, and through irrigation canals to the Medicine Hat area.
The reservoir features the Ridge Park Municipal Recreation Area, and East Bay day-use area and rustic camping. The reservoir and adjacent natural area provide substantial economic and social benefits to the region.


Level Control Training System Stand
Fundamentals of control engineering based on the example of a level control system with integral control action.Open loop control response. Investigation of a controlled system without feedback.
Technical Specifications Required:
• Pump with flow rate: 8L/min and max. head: 6m.
• Pressure sensor: 0...28mbar (0...300mm).
• Storage tank capacity.
• Proportional valve 0.7m³/h at least.
• Basic Unit with USB Port.
• Level-controlled tank.
• P, PI, PID and switching controller Software.


Tanks Direct supplied and provided installation services for a rainwater harvesting system for the Center for Strategic and International Studies. This rainwater harvesting system will be used to supply toilets with water. This project included one 1,000 gallon underground storage tank, media filtration, UV disinfection and dye injection. It also included a PLC controller and pumps with pump controller.
Rainwater harvesting system


- The excavation works of three power water ways which will power nine turbines at the Julius Nyerere Hydro-Power Project in Tanzania, along the Rufiji River, has reached 74 percent completion according to the Project Manager, Eng. Said Kambanga.
- The appointed construction contractors are a joint venture between Egyptian contractor, Elsewedy Electric and the Arab Contractors Company.
Kambanga explained that the excavation of the Water Ways which will direct water to the powerhouse is an important stage in the project execution after the diversion of water from its ordinary route. He affirmed that the excavation works are set to be completed by December this year, stressing that there are no foreseen setbacks to hinder the process.
Kambanga also added that the construction of the Power House will be finalized around the same time that the tunneling works will be completed making way for the other stage of the project which is pouring concrete in both areas. This stage is expected to start in January 2021. Implementation of the entire project on track.
Eng. Said Kambanga confirmed that everything with regard to the implementation of the entire flagship project was going on as planned. He said that together with his fellow patriotic experts, have been working day and night to ensure the East African Country’s goals of possessing a state of the art hydropower production facility in the continent and the first of its kind in Sub-Saharan Africa is realized within the stipulated time.
Project Details and Scope of Works
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
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
-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
Upon completion, with a total electricity generation capacity of 2,115 megawatts, the project is expected to cut power tariffs which will lead to the reduction of the cost of living for Tanzanians as well as the production cost in industries.
Author: Bryan Groenendaal


The contractor appointed to construct the Polihali diversion tunnels is expected to be on site this month, with the works anticipated to be completed in approximately 18 months.The Lesotho Highlands Development Authority (LHDA) recently announced the awarding of the contract for the construction of the Polihali diversion tunnels to SCLC Polihali Diversion Tunnel Joint Venture (JV). The JV brings together international, South African and Lesotho expertise, comprising Salini Impregilo S.p.A (South African branch), Cooperativa Muratori Cementistri CMC di Ravenna (South African branch), LSP Construction (Lesotho) and CMI Infrastructure (South Africa).
Polihali diversion tunnels“The diversion tunnels are essential to facilitate the construction of the Polihali Dam. Their construction is an important element of the advance infrastructure works which started towards the end of 2018 with the awarding of the contracts for the Polihali North East Access road and the civils work at Katse and Mokhotlong. The advance infrastructure will largely be completed prior to commencement of construction of the Polihali dam and the Polihali to Katse water transfer tunnel,” confirms Tente Tente, the LHDA’s Divisional Manager, Phase II. The diversion tunnels will divert water away from the natural river bed to create a dry foundation and work area needed for the construction of a dam. Their construction usually goes along with the building of cofferdams, one upstream and one downstream of the proposed dam, which together allows the river flow to bypass the dam foundation area. In the case of the Polihali Dam, two diversion tunnels will be constructed to divert the waters of the Senqu River. Building two tunnels will increase the capacity to carry floods and will provide flexibility to work in one tunnel while the river flows in the other one.
The tunnels – one 7 m in diameter and the second 9 m – are both almost a kilometre in length and will run parallel to each other from the intake point to the outlet downstream of the dam. They will be excavated by drill and blast method, and will be supported by rockbolts and shotcrete as required.The Metsi a Senqu-Khubelu Consultants Joint Venture (MSKC) which also includes a number of South African and Lesotho-based firm – Aurecon (SA), Knight Piesold (SA), Hatch Goba (SA), SMEC (SA) and FM Associates (Lesotho) – has designed the diversion tunnels and will also supervise the construction work.


This project included feasibility study of rehabilitation of hydropower plant Bruni. It was focused mainly on technological equipment. The study focused on design of new turbo-generator unit.
Installation of the twin-jet Pelton turbine with a synchronous voltage generator and fully automated operation for each power plant was recommended to the client. The specific needs for extremely low noise and vibrations were respected.
Hydropol elaborated feasibility study and prepared design for this Italian hydropower plant rehabilitation.


Bunakha is an 180MW hydro power project. It is planned on Wangchu river/basin in Chukha, Bhutan. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently at the permitting stage. It will be developed in a single phase. Post completion of the construction, the project is expected to get commissioned in 2023. Buy the profile here.
The project is being developed and currently owned by Druk Green Power and THDC India. The owners have 50% stake in the project respectively.
Bunakha is a reservoir based project. The hydro reservoir capacity is planned to be 211.3 million cubic meter. The gross head and net head of the project will be 164m and 141.62m respectively. The total number of penstocks, pipes or long channels that carry water down from the hydroelectric reservoir to the turbines inside the actual power station, is expected to be 3 in number. The penstock length will be 300m. The penstock diameter will be 3.5m. The project is expected to generate 893 GWh of electricity.
The hydro power project consists of 3 turbines, each with 60MW nameplate capacity.
The project will have 3 electric generators installed at the project site. The generator capacity is likely to be 66.67 MVA.
Post completion of the construction, the project is expected to get commissioned in 2023.
For more details on Bunakha, buy the profile here.
About Druk Green Power
Druk Green Power Corporation Ltd (Duke Green) is a energy company that develops, promotes and manages the renewable energy projects. The company formed through amalgamation of the Basochhu, Chhukha, Kurichhu hydro power corporations, and others. It is responsible for the developing and promoting the new hydropower stations. Duke Green is involved in both upgrade of existing plants and construction of new projects. The company also engaged in the infrastructure works such as bridges and roads for the 118 MW Nikachhu project. It provides functions such as site investigations, preparing design and engineering, structuring projects, contracting. The company operates with four subsidiary companies Bhutan Hydropower Services Ltd, Dagachhu Hydro Power Corp, Kholongchhu Hydro Energy Ltd, and Tangsibji Hydro Energy Ltd. Duke Green is headquartered in Thimphu, Bhutan.
About THDC India
THDC India Ltd (THDCIL), a subsidiary of NTPC Ltd, is a renewable energy corporation that operates, develops, and maintains hydroelectric projects. The corporation offers services such as power project development and operation, corporate and project planning, construction management, design engineering, erection and commissioning, contracts management, project management, human resource management, financial management, and commercial management. Its projects include Tehri Dam and HPP, Patan Wind Power Project and Dhukwan SHP, among others. The corporation operates in Rishikesh and Tehri, India. THDCIL is headquartered in Rishikesh, Uttarakhand, India.


Chamera Phase II is a 300MW hydro power project. It is located on Ravi river/basin in Himachal Pradesh, India. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. Post completion of construction, the project got commissioned in 2003. Buy the profile here.
The project was developed by SPAN Consultants and is currently owned by NHPC.
Chamera Phase II is a run-of-river project. The gross head and net head of the project are 267m and 243m respectively. The project generated 1,499.89 GWh of electricity. The project cost is $413.15m.
The project got commissioned in 2003.
Power purchase agreement
Dakshin Haryana Bijli Vitran Nigam and Uttar Haryana Bijli Vitran Nigam are the power offtakers from the project.
Jaiprakash Associates was selected to render engineering procurement construction services for the hydro power project.
GE Power India was selected as the turbine supplier for the hydro power project. The company provided 3 units of francis turbines, each with 100MW nameplate capacity.
Bharat Heavy Electricals supplied 3 electric generators for the project. The generator capacity is 41 MVA.
For more details on Chamera Phase II, buy the profile here.
About SPAN Consultants
SPAN Consultants Private Limited is a civil engineering firm engaged in providing pre-feasibility studies, feasibility studies, traffic and transportation studies, site investigation, detailed design and engineering, procurement assistance, project monitoring services and construction supervision.


Self priming stainless steel jet pressure pump with nXt Pro dual mode electronic pump controller.
Features dry run protection
Ideal for rainwater tanks, whole of house applications.
Suitable for bores up to 9 metres deep.
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Do you know why there is construction in Lake Smith by Northampton Boulevard? — Stacey Fortson
A stormwater management project is under way to help control the level of Lake Smith.
Heavy rains cause the water level of Lake Smith to rise and back up into low-lying neighborhoods, according to public works engineer Jeff Waller.
Workers are replacing the existing weir – the barrier used to control the water level – with a longer one. The project is expected to wrap up by July.
The bid price was $920,000, but change orders for embankment repair have increased the cost slightly.
The nearby boating ramp, part of the Lake Lawson/Lake Smith Natural area, remains open.
Eric Hodies, firstname.lastname@example.org


11 June 2004
The government has approved the construction of the second phase of the Olifants River Water Project, which includes a large dam at De Hoop on the Steelpoort river in Limpopo province.
The project, which will cost over R3-billion, will also involve construction of extensive bulk water distribution infrastructure, in the form of pipelines and pump stations, and the raising of the Flag Boshielo Dam wall on the Olifants River near Marble Hall by five metres.
Construction on the De Hoop dam is due to start in late 2005, subject to the necessary environmental approvals. The dam is expected to start supplying water by 2009, with the full yield by 2011.
The project, to be carried out by the Department of Water Affairs and Forestry, will supply water for social and economic development in large parts of the Olifants and Mogalakwena/Sand Catchments of the Limpopo and Mpumalanga provinces.
“People in these areas will benefit directly through employment opportunities in mining and associated developments, and also in the availability of water for domestic purposes”, said Water Affairs and Forestry Minister Buyelwa Sonjica.
The project also includes pipelines and associated pump stations from the dam site at De Hoop to mining developments as well as to the existing Olifants/Sand Transfer Scheme, which supplies water to Polokwane. A branch pipeline to Jane Furse and the Nebo Plateau is also being planned.
The project will create extensive employment opportunities during the construction period, which is expected to last about five years.
Sonjica described the project as “an excellent example of cooperative governance”, saying her department and the Limpopo and Mpumalanga provincial governments, in consultation with local communities and private sector companies, had investigated numerous options for making more water available in the area before recommending the dam at De Hoop.
The minister said the construction costs would in part be covered through contributions from economic water users, while the government would fund the planning, initial design and water for social needs.


India-based contractor Larsen & Toubro (L&T) said its construction business had been awarded an engineering, procurement, and construction contract for the Gunjawani piped distribution network, including Narayanpur Lift Irrigation Scheme, from Maharashtra Krishna Valley Development Corp (WRD) in Pune, and another deal by Rural Water Supply and Sanitation Department to develop two rural piped water supply projects in Odisha’s Jharsuguda district.
Work on the Gunjawani project will involve the design, procurement, and construction of gravity mains, as well as the installation of pumping system.
The development will cover 21ha and will draw water from the Gunjawani dam.
The Odisha contract comprises design and construction activities for two intake structures, two water treatment plants, 1.7km2 of transmission and distribution pipelines, 58 overhead service reservoirs, nine booster pumping stations, and associated electromechanical and instrumentation works.
When complete, the project will provide drinking water for 273 villages in the Jharsuguda district, L&T said in a statement.


The project aims at design preparing conceptual and detailed design of Damanhur Water Treatment Plant (DWTP) with capacity of 51,000 CMD.
• Technical Brief; the project consists number of building that includes shore intake, pumping station, settling, filtration and storage reservoirs
• Date: December 2020
• Scope of Services:
•Types of Activities:


Alpaslan 2 Dam & HEPP (Murat River, Muş/Türkiye)
ENERGO-PRO is Europe’s leading and pioneering company that is active in hydropower plant construction and operation, in power generation, electricity distribution and power trading, and also turbine and generator production.
Karakurt Dam and HEPP (Aras River, Kars/Turkey)
Meydancık EKO HES
Active experience in the operation of hydropower plants with installed power approaching 500 MW
A high volume active energy trade experience across the domestic and border


Chinese Dam On Brahmaputra
Part of: GS Prelims and GS-II – International Relations
- According to a draft of China’s Five-Year Plan (2021-2025), first dams are to be built on the lower reaches of Yarlung Zangbo river
- Yarlung Zangbo river is the Brahmaputra known in Tibet before it flows into India.
- The Plan specifically mentions the building of hydropower bases which will be the priority energy projects.
- This marks a new chapter in the hydropower exploitation of the river.
- Other major projects include the construction of coastal nuclear power plants and power transmission channels.
The project is also listed along with the Sichuan-Tibet railway and the national water network.


The €30m to €40m (£23m to £31m) flood defence scheme is being designed on behalf of Wexford County Council and funded by the Office of Public Works.
The town of Enniscorthy is located on the banks of the River Slaney and has a long history of serious flooding, most recently last year.
The proposed works cover a 3.5km section of the River Slaney. Major elements include the construction of flood defence walls on both banks of the river, river channel widening and deepening, a flow diversion channel, underpinning of existing bridges and riverbed stabilisation. The scope of work also includes the design and construction of a new pedestrian bridge crossing the river in the centre of the town.
Fintan McGivern, Mott MacDonald’s project director, said: “The completion of this scheme will provide the residents and businesses of Enniscorthy with protection against flooding that has caused so much damage and disruption in the past.”
The Enniscorthy flood defence scheme is due to be completed in 2019.


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- Flood Warning issued August 11 at 11:39PM CDT until August 13 at 4:36AM CDT by NWS
- Effective: 11:39 p.m. on Sunday, Aug. 11, 2013
- Expires: 4:36 a.m. on Tuesday, Aug. 13, 2013
...The Flood Warning continues for the following rivers in
Big Piney River at Fort Leonard Wood affecting Pulaski County
Gasconade River at Jerome affecting Phelps County
Little Osage near Horton affecting Vernon County
Osage River near Schell City affecting Bates and Vernon Counties
Heavy rainfall a few days ago has caused river levels to
The Flood Warning continues for
The Gasconade River at Jerome.
* At 10:45 PM Sunday The stage was 15.8 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
* Impact...At 15.0 feet...Minor flooding begins near the gage site.
Flood waters reach the lower edge of the concrete building where
the gage equipment is located.
- See more at NOAA


Fomento de Construcciones y Contratas, S.A., also said Tuesday that it has been selected to build a hydroelectric plant for Enel Green Power SpA, an Italian firm.
The 50 megawatt hydroelectric plant will be built in the town of Chucás, around 50 kilometers west of San José. It includes the construction of a dam more than 50 meters high and 230 meters long, to create a reservoir with a capacity of 190,000 cubic meters of water, equivalent to the water consumed by a town of 3,000, the Spanish firms said.
The company said it will also build a spillway, access roads to the new plant and a new bridge over the reservoir as part of this project, which is expected to be completed in May 2015.
Enel said it already has a 24 megawatt wind power plant in Costa Rica


The Andhra Pradesh government has decided to set up pumped hydro storage power projects (PSP) of 6.3 GW capacity to promote new renewable energy power plants in the state.
The government has identified seven locations to set up PSP plants. These are namely, Gandikota (Kadapa), Chitravati (Ananthapuram), Somasila (Nellore), Owk (Kurnool), Kurukutti, Karrivalasa (Vizianagaram) and Yerravaram (Visakhapatnam). The PSP mode is likely to balance fluctuations in total input power from the existing renewable energy plants depending on solar and wind power stations. PSP projects will act as largescale energy storage stations.


BMT series cycloid hydraulic motor(can interchange with Danfoss OMT series)
BMT series motor adapt the advance gear set designed with dise distribution flow and high pressure.The unit can be supplied the individual variant in operating multifunction in accordance with requirement of applications.
1.Advanced manufacturing devices for the geroler gear set, which use low pressure of start up ,provide smooth and reliable operation and high efficiency.
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Tate & Lyle Boleraz, s.r.o. - Repair of water reservoir +37.0 mOn 30 March 2017, we successfully completed a repair of the water reservoir +37.0m of Tate & Lyle Boleraz, s.r.o.
The following activities were carried out as part of the repair:
- Remediation of cracks in the shaft;
- Removal of loose parts of the concrete and remediation of surface defects in the reinforced-concrete shaft of the water reservoir;
- Painting of the water reservoir shaft;
- New reinforced concrete rim around the entrance opening;
- New lining of the water reservoir tank;
- Renovation of anti-corrosion protection of steel structures, both exterior and interior;
- New reinforced-concrete coving on the entrance door.


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In order to study the relationship between the cavitation flow and energy conversion, based on the continuity equation, Renault N-S equation and RNG k-ε turbulence model, the whole flow field cavitation numerical simulation on unclear main pump model under design condition is carried out. Through the variation of pressure and velocity on the streamlines, combined with the basic equation of the pump, the dynamic and hydrostatic head of the nuclear main pump under different cavitation conditions are studied. The results show that the energy of fluid of nuclear main pump is provided by posterior segment of impeller, and the energy of the fluid decreases gradually from the shroud to the hub. Cavitation interferes with the flow of liquid in the impeller, which leads to the relative velocity increases and the pressure decreases in cavitation region, and the work capacity of blades is almost zero in bubble areas. At the same time, in non-cavitation region along with streamlines the dynamic head increases and the hydrostatic head decreases with the development of cavitation, and the decrease of the hydrostatic head is greater than the increase of the dynamic head, which results in the decrease of pump head and efficiency. In addition, in the cavitation region, with the development of cavitation, the sudden change of the dynamic and hydrostatic head increases, which increase the flow loss in the impeller and results in the decrease of pump head and efficiency moreover.
- Fluids Engineering Division
Effect of Cavitation Flow on Energy Conversion Characteristics of Nuclear Main Pump
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Cheng, X. "Effect of Cavitation Flow on Energy Conversion Characteristics of Nuclear Main Pump." Proceedings of the ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change. Montreal, Quebec, Canada. July 15–20, 2018. V002T09A008. ASME. https://doi.org/10.1115/FEDSM2018-83090
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Check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent medium backflow, also known as check valve, one-way valve, counterflow valve, or back pressure valve. Check valve is an automatic valve. Its main function is to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis). By choosing different structural forms and materials, it can be widely used in water, steam, oil, acid, alkali and other media.
The sealing pair of flange swing check valve is advanced and reasonable. The sealing surface of disc and seat is made of iron-based alloy or Stellite Co-based cemented carbide surfacing.
Wear resistance, high temperature resistance, corrosion resistance, abrasion resistance, long service life.
The flow passage is smooth, the fluid resistance is small, the valve disc closes quickly, and the water hammer pressure is small.
Horizontal or vertical pipes can be used, easy to install.


- EIAF will provide $29.6m for a hydropower dam in Ivory Coast.
- The plant will generate about 44MW.
The Singrobo-Ahouaty hydroelectric project to be constructed on the Bandama River in Côte d’Ivoire is set to receive a loan of $29.6 million. The Emerging Africa Infrastructure Fund (EAIF) will provide the loan to the project developer, Ivoire Hydro Energie (IHE). The loan will have a tenor of 18 years.
The African Development Bank (AfDB), the African Finance Corporation (AFC) and the German Investment Company (DEG) have also provided financing for the project. The investors will provide 75 per cent of the total investment for the plant, while the shareholders of IHE will provide the remaining 25 per cent via equity.
The project is set to be constructed by the French company Eiffage SA. The Singrobo-Ahouaty hydroelectric power plant project comprises constructing a rockfill dam about 27m high and 1,025m long and a concrete dam about 27m high and 150m long on the left bank, forming a reservoir of 105 million m³. In addition, about 3km of access roads to the project site, a 90km 4 kV transmission line and a substation to connect the hydroelectric power station to the existing Taabo-Agboville transmission line will also be constructed as part of the project. Power will be generated by two 22MW General Electric (GE) or Alstom supplied Kaplan horizontal turbines.
The construction works for the project is expected to take 36 months.
Uche is a climate activist and clean energy enthusiast. He is a renewable energy analyst at The Electricity Hub. Uche has previously worked for an environmental management firm. He has a B.Sc. in Geology from the University of Nigeria.


Dual monitored kits consist of ductile iron manifold and two single solenoid valves making it a redundant design. The series - parallel circuit design blocks flow and pressure until both valves have been actuated to allow flow and pressure from the supply to the machine. If either valve is deactivated the flow to the outlet port will be blocked from the hydraulic supply source and the outlet port is then automatically connected to tank removing all potential hydraulic power at the machine.
The solenoid operated directional valves are equipped with position sensors that monitor the main spool position. The switching position is indicated by a binary signal.
Double redundant valve assemblies are ideal for applications such as:
TÜV certification body certifies the compliance of VSD0*S valves with the EC safety standards ISO 4413:2012, UNI EN 12622:2014, UNI EN 693:2001 +A2:2001, UNI EN 201:2010 and UNI EN 422:2009 with certificate TÜV IT 14 MAC 0043.
- Brick and Block Manufacturing
- Automotive Assembly Lines
- Machining Centers
- Recharging Systems in Critical PetroChemical/Energy Producing Applications
- Pulp and Paper Product Production
- Saw Mills
- Metal Forming
- Food Processing Plants
- Powering Dam Gates
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- Hydraulic Presses


Briefing Paper on the “Worst Case” Implications of Low Missouri River Flows For Power Plants
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In April 2004, FAPRI evaluated two water control plans considered by the Corps of Engineers for the Missouri River in terms of their impact on power plants. The Corps called these plans the Preferred Alternative and the GP2021 plan. The Preferred Alternative plan was adopted by the Corps on March 19, 2004, as the new water control plan. The GP2021 water control plan includes a spring Gavins Point release of 20,000 cubic feet per second above navigation requirements and a low summer release of 21,000 cubic feet per second.