Hydraulic Pumps is an important topic in the subject of Fluid Mechanics and Machinary. In this article, we will list down important points to remember for the topic on hydraulic pumps from the point of view of GATE and UPSC ESE exams.
Hydraulic Pumps: It is a word which has been derived using water as the working fluid, but other liquids can also be used. The two most common kind of hydraulic pumps are:
- Centrifugal pumps
- Axial flow pumps
Centrifugal Pumps: This kind of pump is used to raise liquids from a lower to a higher level by creating the required pressure with the help of centrifugal action. The three important parts of centrifugal pumps are:
- volute casing
Impeller: These are backward curved blades mounted on a wheel, which is mounted on the drive shaft of centrifugal pump.
- As the impeller rotates, the fluid that is drawn into the blade passages at the impeller eye and is accelerated as it is forced radially outwards.
- The fluid has a very high velocity at the outer radius of the impeller.
- To recover kinetic energy by changing it into pressure energy, diffuser blades may be used.
- The fluid moves from the diffuser blades into the volute casing.
- The functions of a volute casing is that it collects water and conveys it to the pump outlet.
For best efficiency of the pump, it is assumed that water enters the impeller radially, i.e. and .
Use Euler's pump equation:
The work done per second on the water per unit mass of fluid flowing is: , where
= component of absolute velocity in the tangential direction
E = W/m = Euler's head and represents the ideal or theoretical head developed by the impeller only.
The flow rate is given by the expression: , where
= radial component of absolute velocity and is perpendicular to the tangent at the inlet and outlet and
b = width of the blade
The work done on the water by the pump consists of the following three parts:
- = represents the change in kinetic energy of the liquid
- = represents the effect of the centrifugal head or energy produced by the impeller
- = represents the change in static pressure of the liquid, if the losses in the impeller are neglected
- There is usually a slight slippage of the fluid with respect to the blade rotation.
- For purely radial blades, which are often used in centrifugal compressors, . Then, the slip factor becomes, , where n = number of vanes = (impeller tip diameter)/(eye tip diameter)
- The Stanitz slip factor is given be,
- When applying slip factor, the Euler pump equation becomes,
- Slip: In centrifugal pumps and compressors, due to relative rotation of fluid in a direction opposite to that of impeller with the same angular velocity as that of an impeller.
The figure below shows that the leading side of a blade, where there is a high pressure region while on the trailing side of the blade there is a low pressure region.
LP = low pressure region,
HP = high pressure region
- Due to the lower pressure on the trailing face, there will be a higher velocity and a velocity gradient across the passage.
- There is low velocity on the high pressure side and high velocity on the low pressure side
- Velocity distribution is not uniform at any radius.
Losses in centrifugal pump operation:
The following are the various losses occuring the operation of a centrifugal pump.
- Eddy losses at entrance and exit of the impeller
- Friction losses in the impeller
- Frictional and eddy losses in the diffuser, if provided
- Hydraulic losses in suction and delivery pipe
- Mechanical losses due to friction of the main bearings and stuffing boxes
A number of efficiencies are associated with these losses,
- Overall efficiency = , where = density of the fluid, Q = flow rate, H = total head developed by the pump, = shaft power input. The term is called fluid power developed by the pump.
- Casing efficiency = Fluid power at casing outlet / Fluid power at casing inlet = Fluid power at casing outlet / (fluid power developed by impeller - leakage losses).
- Impeller efficiency = Fluid power at impeller exit / Fluid power supplied to impeller = Fluid power at impeller exit / (Fluid power developed by impeller + impeller loss)
- Volumetric efficiency = Flow rate through pump / Flow rate through impeller = Q / (Q+q)
- Mechanical efficiency = Fluid power supplied to the impeller / Power input by the shaft =
- The overall efficiency can be calculated as,
- Hydraulic efficiency = Actual head developed by the pump / Theoretical head developed by impeller = . H = manometric head.
The effect of impeller blade shape on performance:
The blade shapes can be classified as:
- Backward curved blades
- Radial blades
- Forward curved blades
In the above figure, is much reduced, and thus, such rotors have a low energy transfer for a given impeller tip speed.
In the above blade configuration figure:
- Enegrgy transfer value is high
- As per the velocity diagram, the value of is very high
- High kinetic energy is seldom required, and its reduction to static pressure by diffusion in a fixed casing is difficult to perform in a reasonable sized casing.
In the above blade configuration:
- Advantages for very high speed compressors requiring highest possible pressure
- Relatively easier to manuacture
- No complext bending stresses
It consists simply of an annular passage without vanes surrounding the impeller. The size of the diffuser can be determined by using the continuity equation.
The mass flow rate at any radius can be found out by: . Where b = width of the diffuser passage and
- For frictionless flow in the diffuser, angular momentum is constant and
- The tangential velocity component is usually very much larger than the radial velocity component, so the ratio of the inlet to oulet diffuser velocities are:
- The above ration means that for a large reduction in the outlet kinetic energy, a diffuser with a large radius is needed.
In the next article, we will talk about Cavitation in Hydraulic pumps and Pump Selection. Feel free to leave comments and queries below in the comment section.


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The contractor will grind the existing pavement where the proposed water main will be installed along Cedar Street and Linden Lane. The asphalt grindings will be left in place to maintain access. Water main installation will begin along Cedar Street at Linden Lane with operations moving east towards Weber Drive. It is anticipated that water main installation along Cedar Street will be completed by the end of the week.
Week of 8/5/2019
JULIE location delineations will be completed. The contractor will begin mobilizing equipment, saw cutting the pavement, and delivering materials to the site.


Kabwe - Zambia
Muchinga Power Company Ltd
2010 - 2012
Description for Muchinga Hydropower (Zambia)
Hydroelectric plant (IP = 255 MW) on the Lunsemfwa river downstream of the Mita Hill dam and of the Lunsemfwa hydroelectric plant
- Headrace channel ( L = 9 km, Qmax = 40 m³/s )
- Headrace tunnel ( No. 2, Total L = 17 km, D = 5 m )
- Mkushi dam (Arc type, H = 120 m, Lcrest= 350 m )
- Surge shaft ( H = 60 m, D = 12 m )
- Penstocks ( No. 3, D = 2.2 m, L = 1’000 m )
- Surface Power House ( No. 3 Pelton turbines, IP = 3 x 85 MW )
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The Government of Albania has approved the construction of a photovoltaic facility at the dam of the Vau i Dejës hydropower plant.
Albanian power utility KESH will have 24 months for the construction and commissioning of the solar power plant from the date of obtaining the construction permit.
The construction approval deadline is 48 months, Albania’s government said.
KESH has the obligation to submit a report on the progress of the construction of the photovoltaic plant to the Ministry of Infrastructure and Energy every three months.
The company applied for a license to build the photovoltaic unit at Qyrsaqi in January.
The construction of Vau i Dejës hydropower plant, which has a capacity of 250 MW, began in 1967. The last segment was finished in 1975.
KESH is also planning to install a 12.9 MW floating solar power plant at the same reservoir and finance the project with a loan from the European Bank for Reconstruction and Development.


SPECIAL WEATHER STATEMENT
...ELEVATED FIRE DANGER THIS AFTERNOON...
THE COMBINATION OF DRY AIR...STEADY NORTHEAST WINDS...AND DRY
SMALL FUELS IS LEADING TO INCREASED WILDFIRE DANGER THIS
AFTERNOON. THESE CONDITIONS ARE EXPECTED TO PERSIST INTO THE EARLY
EVENING HOURS BEFORE WINDS TAPER OFF AND RELATIVE HUMIDITY VALUES
BEGIN TO RECOVER. USE EXTREME CAUTION IF BURNING OUTDOORS THIS
AFTERNOON AND EARLY THIS EVENING...OR PERHAPS CONSIDER ANOTHER TIME
TO BURN IF POSSIBLE.
...The flood warning continues for the following rivers in
Wabash River at New Harmony
.The Wabash River at New Harmony Indiana continues to fall and should
go below flood stage early Sunday morning.
The Flood Warning continues for
the Wabash River at New Harmony.
* until Sunday morning.
* At 8:30 AM Saturday the stage was 16.6 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
early Sunday morning.
* Impact...At 15.0 Feet...The river overflows low ground on the


Home » Shop » 2003 – Investigations and Design of Upgrade Works at Tank Hill in Victoria
Craig Johnson, Phillip Solomon, Nihal Vitharana
Tank Hill Reservoir is located approximately 25km north-east of Warrnambool and forms part of the fresh water supply for the town. It was built in the 1930’s by the construction of an earthfill dam across the natural breach of the crater of an extinct volcano. The reservoir is an offline storage with a small natural catchment and has a nominal capacity of 770ML at Full Supply Level (FSL). The reservoir is operated by South West Water Authority (SWWA).
Previous investigations had identified instability issues associated with the dam embankment and the necessity for remedial work to increase the stability of the dam embankment. SKM undertook detailed survey and investigations and the proposed upgrade works include the construction of a downstream stabilising berm incorporating graded filters and a drainage system. The condition of the outlet works was investigated as part of the project, with some of these works found to be in poor condition with a risk to the security of supply, necessitating the design of refurbishment of the outlet works. The degree of siltation of the reservoir was also assessed, and some loss of capacity due to siltation was noted.
Detailed investigations were performed to determine the optimum configuration of the stabilising berm and to locate and test suitable construction materials. The embankment interface filters were designed to satisfy modern filter design criteria and were incorporated in the embankment drainage system. The condition of the outlet works, including the intake standpipe, three offtake valves and the outlet conduit beneath the embankment, were assessed via manual and CCTV inspections. An operation review, incorporating the proposed upgrade works within the framework of ongoing operation of the reservoir for supply to downstream customers was also prepared, as was a construction risk assessment.
This paper will present “extremely useful practical information” for dam design engineers, owners and operators where the whole spectrum of dam safety issues is required for the successful completion of remedial works design and construction.
ANCOLD is an incorporated voluntary association of organisations and individual professionals with an interest in dams in Australia.


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Demirköprü Dam and Hydroelectric Power Plant was built on the Gediz River at a distance of 100 km from Manisa province and 27 km from Salihli district. It has a total installed power of 69 MW with its 3 generators, each of which is 23 MW, and its annual production capacity is foreseen as 80 million kWh.
Measurements were started for the construction of Demirköprü Dam and Hydroelectric Power Plant located in the Gediz Basin in 1938, and the project of the facilities was prepared in 1953-1954 by the Electrical Works Survey Administration and Knappen-Tippetts-Abbett McCarthy Engineering Company. The construction works of the power plant, which were started in 1954, were completed in 1960 and it was put into operation. Demirköprü Dam and Hydroelectric Power Plant, which is built on the Gediz River originating from Murat Mountain near the Gediz district of Kütahya and heading west, is an earth-rock body fill type of dam. The body volume of the dam is 4.560.000 m³, the body height is 77 m, and the crest length is 543 m. The maximum water elevation of the dam is 244.2 m, and the lake volume at this elevation is 1.022 hm³ and the lake area is 45 km².The energy produced at the power plant is transferred to Salihli and Alaşehir regions with 154 kV lines and to Demirci-Gördes, Kula, Alaşehir and Salihli Villages with 34.5 kV lines.


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New Water Project Commissioned In Masindi Town
- A new water production improvement plant has been commissioned in Masindi Town to improve production at Kiyanja water works Masindi.
The 2.2 billion Shillings facility addresses the water shortages, rationing, and dry zones, which had become rampant in Masindi Town. It is comprised of new intake pipelines, clarifiers, filters, electro-mechanical installations and associated pipe work interconnections designed to expand the production capacity of the intake and water treatment plant at Kiyanja.
Upon completion, the water production capacity of Kiyanja water works will increase from 1.8 million litres a day to over 4.3 million litres of water a day, meeting the area demand for the next 15 years.


Pampa-Thriveni overflowing heavy rain | Photo: K Aboobakkar | Mathrubhumi
Thiruvananthapuram: An orange alert has been sounded in Idukki dam as the water level rose to 2396.86 feet. The orange alert was issued by 7 am on Monday. If the water level rises atleast by one foot, a red alert will be sounded. Currently, the water level in Idukki dam is at 2396.96 feet.
The KSEB authorities informed that they are operating all five generators and producing maximum electricity. As power production is progressing according to the water flow into the dam, the public need not panic, they added.
The maximum storage capacity in Idukki dam is 2403 feet. Though rain receded in Idukki, the water level keeps rising in the dam. Kallar dam has already been opened. Kakki dam will be opened by 11 am as heavy rainfall continues in its catchment areas. Current water level in the dam is at 983.5 feet. Its maximum storage capacity is 986.33 feet.
Meanwhile, a high-level meeting will be convened under the leadership of chief minister Pinarayi Vijayan on Monday at 10 in the morning. The chief minister will review the rain havoc in the state. Health minister Veena George said that there is no need to panic and the rain has receded.
The India Meteorological Department (IMD) informed that the rainfall is likely at isolated places in Ernakulam, Thrissur, Palakkad, Malappuram, Kozhikode, Wayanad, Kannur and Kasaragod on Monday morning.
Meanwhile, the state government has appointed ADGP Vijay Sakhare as the nodal officer to coordinate the rescue and relief operations.
Thrissur District Collector Haritha V Kumar has asked the public residing along the banks of Chalakudi river to remain vigilant as water level may rise as Sholayar dam may open soon.


29 April 2005 – The Bosnian Serb government is to go ahead with the construction of the Buk Bijela 300 MW hydroelectric power plant, the country’s economy, energy and development minister, Miladin Gligoric, has said.
Gligoric said at a news conference that the decision was made following the decision of the Montenegrin government to abandon further activities in connection with the construction of the hydroelectric power plant. “With regard to this, the government today reached a decision on the construction of the Buk Bijela hydroelectric power plant which will have a capacity of 300 MW and will be built solely on Serbian Republic territory,” Gligoric stressed.
Gligoric pointed out that the government has asked companies who were interested in constructing this hydroelectric power plant to put in their bids for the construction of a smaller capacity hydroelectric power plant. He said two companies had expressed a positive interest, not specifying which.
Gligoric said he expected that the construction of the hydroelectric power plant “in the best-case scenario” would begin within eight months, as four to six months were needed to partially amend the hydroelectric power plant feasibility study and the study on environmental protection.
The large-scale project will tap the energy resources of the Piva and Tara rivers but is expected to face opposition on environmental grounds.


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The aim of the project was to improve the surface water quality of the Bečva River and to reduce the negative influence of the pollution from the sewerage network on the river. The existing sewerage system was reconstructed in the town of Přerov and parts of Dluhonice and Kozlovice were later connected to this system. By reconstructing and increasing the capacity of the collectors, the waste water could be transferred to the newly built retention reservoirs in which the contaminated rainfall will be retained. The environmental benefit of the construction is to reduce the number and volume of rainwater overflows from the storm water inlets in Přerov during heavy rainfall. The construction also includes measures for the sewerage network against water intrusion from the Bečva River into the entire sewerage system.
In Dluhonice, a new pumping station with a sewerage discharge was built at the outlet of the sewerage to the watercourse which pumps the wastewater into the sewerage network of the city of Přerov and takes it to the waste water treatment plant. The same principle of sewage diversion was chosen in the local part of Kozlovice where, in addition to the construction of a pumping station, a new sewerage system was built in the whole local area, including the switchover of the existing domestic connections.
|Amount||412 million CZK|
|Investor||Vodovody a kanalizace Přerov|


Power generation began on the Right Power House (Andhra Pradesh side) of the Srisailam Dam on Tuesday morning, following good inflows from the Tungabhadra and the Jurala projects.
The dam was receiving 1,05,200 cusecs of water at 3 p.m., while the outflow was put at 66,840 cusecs with A.P. Power House utilising 27,568 cusecs and Telangana 31,784 cusecs of water.
The A.P. Engineer-in-Chief (Irrigation) has written a letter to the Krishna River Management Board (KRMB), seeking permission to start power generation by utilising the excess water that would begin to flow into the dam through spillway, with the storage reaching 201.58 tmcft against the dam’s capacity of 215.8 tmcft.
The water level now stands at 882 feet against the maximum of 885 feet. The brimming Tungabhadra Dam is discharging 5,140 cusecs into Sunkesula, which is discharging 23,753 cusecs into Srisailam Dam. Another 85,693 cusecs from the Jurala project on the Krishna River is being received at Srisailam Dam.
With the good rain in catchment areas of both the rivers, more inflows are expected into the Srisailam Dam.


Ihavandhoo Harbor development in full swing
Dredging works for the Ha. Ihavandhoo Harbor development project are progressing according to schedule, with 98% completion so far, Maldives Transport and Contracting Company (MTCC) informs.
First shipment of pre-cast concrete blocks, required for the construction of quay wall, was successfully delivered to the project site on May 20, 2021.
The work includes:
- dredging and excavation operations – 30,509cbm;
- construction of a 95m quay wall;
- a 284m breakwater and a 178m revetment.
Additionally, the installation of navigation lights, streetlights and construction of 4,582m2 of paved area will also be undertaken.
The value of the Ihavandhoo Harbor development project is MVR 48.5 million ($3.1 million).


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Dasu Hydropower Project to be completed in 2020
Minister of State for Natural Resources Jam Kamal says PC-1 for the 2,160-megawatt project has been approved by ECNEC
The National Assembly was informed that 2160 megawatt Dasu Hydropower Project will be completed in December 2020.
During quetion hour Minister of State for Natural Resources Jam Kamal told the House that PC-1 of the project has been approved by ECNEC.
He said contract for construction of 132 KV transmission line from Duber to Dasu has also been awarded.
To a question, Jam Kamal said various projects are under execution to make hydropower houses more efficient.
He said upgradation and refurbishment of Mangla Power Station has been planned to increase the efficiency of turbines and reliability of Hydraulic equipment.
He said it will also increase the generation capacity of Mangla Power Station from 1000 to 1310 MW.
Similarly, upgradation and modernization of Warsak Hydroelectric Power Station will regain the lost capacity of 53 MW.
The House will now meet at 10:30 tomorrow morning.


With the awarding of major contracts, Lesotho and South Africa are satisfied that phase II of the Lesotho Highlands Water Project (LHWP) is now underway. The LHWP is a multi-phase international project between Lesotho and South Africa established through a treaty signed by the two countries in 1986. Phase I involved the construction of a 185-metre-high dam and augmenting South Africa’s freshwater supply by transferring water from the Maluti mountains into the Vaal River system through a 48 km long tunnel and a tail pond. Already augmented by water supply from from Mohale dam, completed in 2002, contracts have now been awarded for the construction of the Polahali Dam and the Polahali Transfer Tunnel, which suignal the commencement of phase II of the project.
The Polahali dam is to be constructed at the confluence of the Senqu and Khubelu rivers. The dam is designed as an additional supply dam which will augment the supply of the existing Katse dam, also in Lesotho and part of the LHWP phase I. Through the Kaste dam , which has enabled the transfer of almost 18 billion cubic metres of water to South Africa since 2004. Through phase II of the LHWP, the annual supply capacity will increase from the current 780 million mᶟ to 1.2 billion mᶟ. A 38 km transfer tunnel will enable water transfer through gravity flow to Katse Dam. Additionally, phase II will enable the addition of 80 MW of electrical power to the existing 72 MW produced at the Muela hydropower plant.
Additionally, a Lesotho-Botswana Water Transfer Scheme is envisaged by the Orange-Senqu River Commission (ORASECOM) on behalf of The Republic of Botswana, the Kingdom of Lesotho, The Republic of Namibia and the Republic of South Africa for Lesotho’s lowlands. This would involve the construction of a dam on the Makhaleng River and a 712 km bulk water conveyance system.


River condition forecast on 2018-10-15
River conditions forecasts posted on 2018-10-15 by Ottawa River Regulation Planning Board
Following rapid increases in water levels over the last few days, water levels along the main stem of the Ottawa River are beginning to stabilize. Flows and levels are expected to remain above normal for this time of the year over the coming week.
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Our largest project awarded by Associated British Ports, Immingham the largest port (by tonnage) in the UK.
As part of ABP’s Humber flood defence strategy contract the works involved the provision of new infrastructure to facilitate the installation of larger lock entrance gates. Works included the installation of 5km of ducting, major drainage and service diversions, the diversion of a Northern Power Grid 11kVa Feeder cable, supplying 2no oil storage facilities and the diversion 11kVa ABP cable, supplying the main Dock Offices. Works also included the design and construction of a bespoke lock gate stand designed to support a 160 ton lock gate along with the relocation of two Lock Gates, HGV turning area.
Following the completion of this contract and working in partnership with Ravestein Marine the second phase of the project involved the construction of piled foundations to facilitate the new lock gates. Works were demanding,
harzardous and very challenging on site working directly on the lock side between daily live shipping movements. Four 150m3 foundations complete with 80 tons of reinforcement were constructed to accommodate the
main rams and top anchorages. Within these works, troughs were installed for hydraulic pipes and concrete supplied and laid to the dock bottom in preparation for the installation of the new lock gates.


Lagos State Government Begins Construction Of Magodo-Shangisha Drainage Canal. Photos
Posted On 20/07/2016
The Lagos State Government through the Lagos State Public Works Corporation has commenced the construction of a major collector drain at Magodo-Shangisha canal to avert flooding in the neighbourhood.
The Corporation, according to the Chief Executive Office (LSPWC), Engineer Ayotunde Sodeinde is currently working on the long stretch of the Magodo-Shagisha drainage canal embedded in a gorge in order to ease the flow of rainwater and domestic discharge from residential buildings within the neighbourhood.


Bengasi district - Libya
Ministry of Agriculture - Libya
Description for Wadi Zaza (Libya)
Wadu Zaza project includes two dams for irrigation purposes: Wadi Zaza and Wadi Got
- Wadi Zaza (Arch Dam, H = 40 m, L = 180 m; V = 0.03 Mm³)
- Wadi Got (Concrete Gravity Dam, H = 20 m, L = 200 m)
Batoka Gorge (Zambia)
Trans-boundary hydropower plant of 1'600 MW, equally shared among Zambia...
Porto Romano (Italy)
Yacht Harbour is on the right side of the Tevere River floodplain, about 1 km...
Water storage plant for irrigation purposes with a reservoir capacity of 42...
Arda Cascade (Bulgaria)
Hydropower cascade including the existing plants of Karjali (IP = 106 MW),...
Uribante Doradas (Venezuela)
Hydroelectric project with IP = 300 MW.
Rio Mannu (Italy)
Concrete gravity dam for water supply and irrigation to be constructed in two...
Tana Beles (Ethiopia)
The ambitious Tana Beles project was located in the Metekel district of...
Little Beles (Ethiopia)
Reservoir for water supply with a storage capacity equal to 3.5 Mm³.
Chespi is the first hydroelectric project of the Guayllabamba cascade with an...


Discharges of past flood events based on historical river profiles
Abstract. This paper presents a case study on the estimation of peak discharges of extreme flood events during the 19th century of the Neckar River located in south-western Germany. It was carried out as part of the BMBF (German Federal Ministry of Education and Research) research project RIMAX (Risk Management of Extreme Flood Events). The discharge estimations were made for the 1824 and 1882 flood events, and are based on historical cross profiles. The 1-D model Hydrologic Engineering Centers River Analysis System (HEC-RAS) was applied with different roughness coefficients to determine these estimations. The results are compared (i) with contemporary historical calculations for the 1824 and 1882 flood events and (ii) in the case of the flood event in 1824, with the discharge simulation by the water balance model LARSIM (Large Area Runoff Simulation Model). These calculations are matched by the HEC-RAS simulation based on the standard roughness coefficients.


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Maximum pressure (bar): 15
Piston diameter (mm): 55
Delivery (liters/hour): 800
Absorbed power (kW): 0,75


Maldives Transport and Contracting Company (MTCC) has provided updates on their projects currently in progress.
Firstly, according to MTCC work on design and build of Adh. Hangnaameedhoo Harbor Development Project is well underway, with overall 67% project progress. The fourth shipment of precast concrete blocks required for quay wall construction have been delivered to project site on 10th February 2022. The construction of breakwater is currently ongoing, with 91% project progress as well.
The Adh. Hangnaameedhoo Harbour project consists of; dredging and excavation operations of 6,363.1cbm; construction of a 204m breakwater; a 266m quay wall; a 160m revetment; installation of 1,330sqm of paved area and installation of streetlights. This project is valued at MVR 29.1 million.
Next, work on Gdh. Thinadhoo Dr. Abdul Samad Memorial Hospital Development Project is also well underway, with overall 82% project progress. Construction of OPD Building and Labor Room Building are ongoing, with 99% completion.
Scope of project works include construction of the OPD building, construction of the Labor Wing building and renovation of the ER building. This project is valued at MVR 33.5 million.
Lastly, work on design and build of Dh. Hulhudheli Harbor Development Project is well underway, with overall 64% project progress. MTCC has completed installation of precast concrete blocks required for quay wall construction. Paving works are currently ongoing with 80% completion. The concrete works of the quay wall are also ongoing.
Scope of works for the project include dredging and excavation operations of 49,612 cbm; the construction of a 432m quay wall; a 337m breakwater; and a 252m revetment. Additionally, the installation of 1,645sqm of paved area and streetlights will also be undertaken. This project is valued at MVR 45.8 million.


- Technical features
Drycoolers with built-in hydraulic group, in a low-noise construction, designed for heat dissipation of the refrigeration equipment condensation waterloop.
- Low sound level with double acoustic insulation.
- Tropicalised design for ambient temperature up to 45 ºC as standard.
Waterloop drycoolers (CWF-2 up to 8) incorporate an
electronic control with the next functions:
- Variation of the water pump flow adapting to the
demand, depending on the impulsion pressure.
- Waterloop temperature control by fan speed
variation, with floating setpoint.
- Frost protection.
- Axial EC motor fans (except CWF-0 and CWF-1).
- High efficiency water coils with copper pipes and aluminum fins.
- Hydraulic group with variable flow electronic pump, expansion valve, security valve, filter, thermomanometres and auto-fill valve included.
- Threaded hydraulic connections.
- Electric power panel with protection of hydraulic pump, fan motor and speed regulator (except CWF-0 and CWF-1).
- Water coil anti-corrosion polyurethane coating.
- Coil protection grille:
- Series 0 up to 4.
- Series 6 and 8.


IECA 2020 Technical Paper of the Year AwardSilt fence is one of the most commonly used sediment barriers on construction sites. Often times silt fence fails due to inadequate design or improper installation and maintenance. This presentation will explore a new silt fence design and installation approach developed by the IECA Standards and Practice Committee targeted at improving the field performance of sediment barriers. The design guidance has been developed after a compressive state-of-the-practice review of design guidance and performance-based research results. The presentation will include design and implementation examples through a user-friendly spreadsheet-based design tool that has been developed to assist professionals in the proper design and implementation.
Summarize main characteristics of silt fence performance based on previous large-scale testing results.
Understand a design approach to adequately design and install silt fence.
Implement a spreadsheet based tool for the design of silt fence controls.


Browsing Department of Mechanical Engineering & the Built Environment by Subjects
Now showing items 1-3 of 3
Influence of upstream turbulence on the wake characteristics of a tidal stream turbine.The influence of the upstream turbulence intensity on the flow characteristics downstream of a laboratory-scale horizontal axis tidal stream turbine is investigated in this study. Three test cases with the same mean velocity and different turbulence intensities are simulated numerically using the hybrid large eddy simulation/actuator line modelling technique. The mean velocity components, mean turbulent fluctuations, velocity deficit and wake extension are compared along the streamwise direction to examine the upstream turbulence effects. The inflow conditions are generated by the mapping method using the mean velocity and turbulent profiles experimentally obtained for a turbulent open channel flow. Comparing results for the mean velocity and turbulent fluctuations shows that the upstream turbulence level strongly affects the flow characteristics downstream of the turbine by influencing the tip vortices breakdown process and in turn wake recovery. The comparison also reveals that the ambient turbulence level strongly influences the velocity deficit but it does not significantly affect the streamwise velocity and the radial location of tip vortices in the flow.
Numerical simulations of wake characteristics of a horizontal axis tidal stream turbine using actuator line model.The wake of a laboratory scale tidal stream turbine in a shallow water channel with a turbulent inflow is simulated using the hybrid LES/ALM technique, which combines large eddy simulation with the actuator line method. The turbulent inlet conditions are generated using the mapping method to avoid a precursor running and large space for saving data. The numerical results demonstrated the usefulness of the mapping technique as well as some shortcomings that still remain to be addressed. Good agreement between numerical predictions and experimental data is achieved for both the mean and turbulent characteristics of the flow behind the turbine. The examination of changes in turbulence intensity and turbulent kinetic energy in the streamwise direction confirms the existence of a peak and transition to a highly turbulent flow about three diameters downstream of the turbine, which means that the distinct characteristics of the streamwise changes of turbulence intensity or turbulent kinetic energy may serve as an effective indicator for the flow regime transition and wake behaviour.
Validation of the actuator line method for simulating flow through a horizontal axis tidal stream turbine by comparison with measurementsThe purpose of the present work is to evaluate the capability of the Actuator Line Method (ALM) to simulate flow through a horizontal axis tidal stream turbine. A numerical model combining the ALM with large eddy simulation technique is developed and applied to compute the flow past a laboratory-scale tidal stream turbine. The flow field is analysed in terms of streamwise mean velocity, turbulence intensity, turbulent kinetic energy and the decay rate of the maximum turbulent kinetic energy behind the turbine. It is found that the ALM performs well in predicting the mean flow and turbulence characteristics behind the turbine. The flow field predicted show a clear transition from an organised vorticity region near the turbine to a highly turbulent flow downstream. The location of this transition and the controlling parameters are discussed but further investigation, both numerical and experimental is required in order to clarify its effects on the flow structure and the performance of downstream turbines in tidal turbine arrays.


Subject: How to use the Flow Splitter in InfoSewer for Dendritic Networks
InfoSewer, which is an extension in Arc Map, does need to have slit split defined where gravity mains merge together to determine the amount of flow in each of the downstream conduits (Figure 1). The options for the flow splitterin each of the downstream links are:
1. Automatic Allocation
2. Fixed Flow Percentage
3. Variable Flow Percentage and
4. Inflow-Outflow Curve
At an outfall where the invert of the outfall pipe is raised compared to the inverts of the incoming and outgoing pipes a flow split of Variable Flow Percentage or Inflow/Outflow curve may work better (Figure 2).
Figure 1. Options for Performing a Flow Split in InfoSewer
Figure 2. The Effect of the flow split can be used to model complex situations in a dendritic model with outfalls.


MILLS, Wyoming – The Bureau of Reclamation will be lowering the water level in Alcova Reservoir as the 2022
irrigation season draws to a close. The annual drawdown of the reservoir will begin on Saturday, Oct. 1.
During October, the reservoir water surface elevation will be lowered about 10 feet, at a rate of approximately four
inches per day. The reservoir’s normal winter operating range is between 5,487 and 5,489 feet.
Water released in the drawdown of Alcova Reservoir will be restored downstream in Glendo Reservoir.
Boat owners and recreationists should be aware of the declining level of Alcova Reservoir and take proper
Alcova Dam is on the North Platte River about 35 miles southwest of Casper, Wyoming. The dam forms a
reservoir from which water is diverted into Casper Canal for irrigation of lands in the Kendrick Project near Casper.
Winter releases from Alcova Reservoir generally provide power generation and relocate storage water into Glendo
Reservoir for delivery the following spring and summer. Alcova Power Plant is located just downstream of Alcova
Dam and has two 20.7 megawatt generating units.
# # #


Arduino-based automatic water level indicator and controller project we are going to estimate the water level using ultrasonic sensors.
The concept we have used here in our project where the water motor pump is automatically turned on when the water level in the respective tank becomes low.
Ultrasonic sensor HC-SR04 is utilized to estimate distance in the range of 2cm-400cm with an accuracy of 3mm. The sensor module includes an ultrasonic transmitter, receiver as well as control circuit.
The signals after striking an obstacle it will return back and are captured with the help of the receiver.


This project consists of the planning, design and labour intensive construction of a new access road and stormwater drainage. The project included full participation of the community from the project identification phase up until the completion of the construction. Most materials were bought from small local suppliers. A local contractor was appointed for the construction of the project and only made use of local labour.
This project was selected by the EPWP Evaluation and Research Department as one of the best performing projects in South Africa and the only project selected in the Free State.


Perry Barr and Witton Flood Risk Scheme Updated
The Environment Agency has just released new update on the Perry Barr and Witton flood risk management scheme.
The scheme is 1 of 6 separate projects that take forward the recommendations of the River Tame flood risk management strategy.
In order to reduce the delay to the Perry Barr and Witton scheme construction, the Environment Agency is building the scheme in two phases:
- phase 1: flood wall and flow conveyance improvements through Witton and down to Witton Gravelly Industrial Estate;
- phase 2: increased flood storage at Forge Mill.
Phase 1 consists of rebuilding the existing flood walls along Brookvale Road, constructing new walls alongside Atlas Industrial Estate and at the back of the warehouses along Tame Road. Construction work on phase 1 of the scheme should be complete by July 2016.
Detailed design of the phase 2 has begun and will determine how the scheme will be constructed and operated as well as how much it will cost to built it. The aim is to submit a planning application for this phase of works in 2016 to enable construction to start in 2017 and be completed 12 to 18 months later.


Jumla's Dhauligad water supply project in pipeline
JUMLA: The Dhauligad Water Supply Project, one of a major project of Jumla district, is to be constructed after all, albeit with increased cost.
The DPR prepared by Dream Geo Lab Consultancy two years ago put the estimated cost of the project at Rs 451 million 988 thousand 92.
The cost of the project is going to rise as the survey for the project is going to be conducted again, Chief of the District Water Supply and Sanitation Sub-division Office, Tanka Bahadur Sodari said.
"A consultancy called Landex is going to prepare the project DPR now and it is certain that the construction cost will rise. The construction works of the project would be started from the next fiscal year," he added.
Construction works of four sub-projects under the main project have already started at Bhandarigaon, Dhandthapala-1, Dhandthapala-2 and Kotilagaon, he said.
The project covers Tatopani and Guthichaur rural municipalities and Chandannath municipality areas, benefiting a population of 43 thousand 555.


Miter Gate Storage Design-Build project for the construction of a marine based storage facility on the Ohio River. This project included site […]
Miami Flood Wall
Mooring Cells Construction of (4) new 30 foot diameter steel sheet pile mooring cells below a new Lock and Dam on the […]
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Ariston 406909 Combined Pressure Reducing Valve & Line 'S'trainer - 591001
Product DetailsThe pressure relief valve helps to control pressure build up within a heating system. It is set to open proportionally to increasing pressure to ensure the pressure doesn't reach a dangerous level .
- Fits multiple appliances
Type Strainer Manufacturer Model No 406909 Brand Name Ariston EAN 3234090488487


Fosberg Road Drainage Improvements
Fosberg Road is a mostly uncurbed street where, during periods of heavy rain, the section south of Glacier Lily Street experiences severe shoulder erosion and the flooding of private properties. This project will construct the necessary infrastructure to capture the runoff and manage it within the City's stormwater system. The small storm project, to be constructed between Carmen Drive and Glacier Lily Street, is expected to extend the existing curb up the westerly side of the road to the area of Glacier Lily Street. The project will also include new storm pipe and inlets along the lower segment of Fosberg Road. Additionally, the existing storm inlets at Glacier Lily will be replaced with new inlets that are more efficient at capturing the runoff that flows out of the neighborhood to the east.
Most of the preparatory field work has been completed and the project is currently in the design phase. Contract bidding is expected to take place in late winter with construction scheduled for early summer.
Rob Amsberry, Project Manager
Construction Line 503.635.0261


J.E. Bonding: Mark Luckett Texarkana AR Bail Bonds (Bondsman)
1608 W 13th St
Read more about this business
Sulpher River flood warning continues to Sunday
The flood warning for the Sulphur River near Naples has been extended until Sunday.
At 7:30 a.m. Thursday, the stage of the river was 23 feet. Flood stage is 22 feet, accor... Published: 12/27/2013
Business Directory Sponsored Articles:


A simple operating model of the Van der Kloof Reservoir using ANN streamflow forecasts
The operation of Van der Kloof Dam on the Orange River was investigated with an artificial neural network and a spreadsheet model. The objective was to simulate inflow into the dam and optimize reservoir operation for optimum power generation. The advantage of artificial neural networks lies in their ability to simulate both linear and non-linear systems and the modeller does not need knowledge of the physical processes driving the system hydrology. The current operation of the Orange River was reviewed and literature review was conducted for reservoir operation and artificial neural networks. The hydrology of the Orange River (1977 – 2008), the water requirements and hydropower plant layout were investigated. A 1-month ahead streamflow model was then developed to predict inflow into Van der Kloof Dam over an operating period of 12 months. The resulting simulation was satisfactory, proving the power of artificial neural networks. The inflows were used to optimize reservoir operation by maximizing hydropower and minimizing water supply deficits. The software used to build the network, NeuroSolutions, however did not have an algorithm for optimizing reservoir operation. The embedded genetic algorithm was only available for optimizing network training. As a result, the operation of the reservoir was optimized on Excel which was found satisfactory for the one reservoir system investigated. Potential areas for further research include seasonal models and annual forecasting models with robust monthly disaggregation.


MWH is leading a joint venture to provide final design and construction supervision services for the 969 MW Neelum-Jhelum hydropower project, one of the major elements of Pakistan’s Vision 2025 program for energy development.
Location: Muzaffarabad, Azad Jammu & Kashmir, Pakistan
Services include review of tender-level design, preparation of construction drawings and construction management services. The project includes a 135-meter-long, 47-meter-high concrete gravity diversion dam on the Neelum River at Nauseri, a gross head of 420 meters, and a reservoir of 8 million m3. The 28.5-kilometer-long headrace tunnel will be constructed in rock through the challenging Himalayan geology of interbedded sandstones, siltstones and mudstones, and will cross through the Muzaffarabad Fault and under the Jhelum River. The surge chamber consists of a 341-meter riser shaft and an 820-meter-long surge tunnel. Four 100-meter-long steel-lined penstock tunnels with a 3.8-meter internal diameter will be constructed. The underground powerhouse has four turbine-generator units with a combined maximum capacity of 969 MW (5,150 million kWh of annual energy generation), discharging into the Jhelum River through a 3-kilometer-long tailrace tunnel. The project will be connected with Rawat Grid station through a 500-kV double-circuit transmission line.
The Neelum-Jhelum Project is one of the major projects planned by the government of Pakistan to enhance its hydropower development to meet the growing energy needs of the country.
For more than 50 years, MWH has been instrumental in the sustainable development of water and energy resources in Pakistan, including flood control, irrigation, and energy generation and transmission.
Review of tender-level design
Preparation of construction drawings
Construction management services
Reduction of dependence on thermal power.
Increased power generation to meet energy demands.
Increased energy independence achieved through reduced need for importation of crude oil.
Local employment opportunities during construction and operation.
Improved standard of living infrastructure.
Social and economic benefits for the local population.


We have expertise in following range of Hydraulic Cylinders :
- Hydraulic Cylinders are manufactured for applications where pressure is ranging from 10 kg/cm2 to 400 kg/cm2.
- Standard Cylinders are available with robust design for working pressure of 160 kg/cm2 & test Pressure of 200 kg/cm2.
- Custom made Hydraulic Cylinders are manufactured according to the specific dimensions, pressure & temperature requirements.
- Hydraulic cylinders are manufactured from 32mm bore to 350mm bore size with various stroke lengths.
- Tubings for the Hydraulic Cylinders are M.S. Honned & Hard Crome Plated & Piston Rods are EN8 Ground & Hard Crome Plated.
- Tie rod construction as well as welded construction designs are available.


Jobe Rojo Float Valve, High Flow ¾"
Rojo Float Valves are float operated valves for automatic filling of water storage vessels. The Rojo can be mounted above or below water level. The Rojo is a good choice where low flow is sufficient and its compact non-corrosive construction is beneficial.
- Mounting: Side, bottom, or top
- Operating pressure range 0-150 PSI
- Max flow 6 GPM
- Built in check valve
- Fully adjustable float angle
- Flow stops when unscrewed for servicing
- Switch to lock valve into off position ¾" thread inlet
- ¼ turn removes valve to easily clean filter


MAHABUBNAGAR: Priyadarshini Jurala, the first project of Telangana state on Krishna River, has opened five of its crest gates on Saturday after it started receiving 59,438 cusecs of water.
The project is releasing 33,908 cusecs of water after using it for generating power. 624 cusecs of water is being let out into its canals.
On the same day last year, Jurala had, however, received 89,129 cusecs of water and released 86,826 cusecs of it. The project has a gross capacity of just 9.66 tmc. The current reservoir level of 1,053.08 feet is just a little short of its total storage capacity of 1,045 feet at FRL. Since June 1, when the water year began, Jurala has received total of 39.25 tmc of water, with a flood cushion of 1.19 tmc.
An engineer at the project site said that they are not holding any water and releasing inflows continuously.
On the other hand, Srisaialam Reservoir has received average inflows of 26,045 cusecs during the past 24 hours. The reservoir has only 34.10 tmc of water against its total storage capacity of 215.80 tmc.
Alamatti Dam in Karnataka upstream of Jurala is receiving 53,502 cusecs and is releasing 42,264 cusecs. Narayanpur is getting 45,629 cusecs and allowing 40,608 cusecs to flow out....


Terna Energy is preparing to begin the construction of a pumped storage hydropower system in western Greece worth EUR 500 million. The Amfilochia unit will have a capacity of 680 MW in turbine mode and 730 MW for pumping.
Hydroelectric Projects Director of Terna Energy Yioula Tsiknakou has announced at IENE’s conference that the Greek company reached a final investment decision for its pumped storage hydropower plant in the northwestern part of Aetolia-Acarnania. As reported by EnergyPress, she said the construction is scheduled to start in October and last up to four years.
The Amfilochia system, valued at EUR 500 million, is envisaged to have a capacity of 680 MW in turbine mode and 730 MW for pumping. It will consist of upper reservoirs Agios Georgios and Pyrgos and a common lower reservoir, the existing Kastraki lake, built in 1960 and owned by state-controlled Public Power Corp. (PPC). The equipment will be installed in two separate powerhouses on the northeastern bank.
The system will store excess electricity from wind, photovoltaic and thermal power plants, documentation shows. The Agios Georgios section is planned to have four units with 460 MW in total in turbine mode and 496 MW in pumping mode. It compares to 220 MW and 234 MW, respectively, in the two units in Pyrgos, also a semi-outdoor facility. Annual output is seen at 816 GWh.
Terna obtained strategic investment, PCI statuses for its Amfilochia pumped storage project
The surface of the Pyrgos reservoir is predicted to be 285 meters above the lower reservoir and Agios Georgios should be 238 meters higher than the Kastraki lake.
The company, part of the GEK Terna Group, obtained the production licenses and interconnection clearance for the pumped storage project intended for the integration of renewable energy sources. The European Commission approved the status of a project of common interest or PCI in 2013 for the system in Amfilochia, while one year after that Greece declared it a strategic investment.
The firm estimated the project in the western part of the country would be 70% domestically sourced. It will employ 1,200 people during construction and 100 permanent jobs should be created.
Plans underway in Crete for Europe’s biggest hybrid power plant using renewable sources
According to Terna Energy, its licensed pumped storage projects in the Balkan country, including Amfilochia, will have a combined capacity of 1.5 GW.
One of them is planned to be implemented at the Potamoi dam in Crete. The company said Amari is the largest hybrid power project in Europe. It combines energy produced by two wind farms with an installed capacity of 89.1 MW in the prefecture of Lassithi; a hydroelectric power with a capacity of up to 93 MW and a pump complex of 140 MW. Terna calculated it ensures a constant 227 MW of power, reducing the need for fossil fuels, alongside flood protection.
The Amari facility in Greece’s biggest island will combine two wind farms, a hydroelectric plant and a pump complex with 322.1 MW in total capacity
The pump system will be installed underground at the existing reservoir of the Amari river dam. It will consist of three constant speed turbine pumps of 31 MW each and twelve variable speed pumps of 3.2 MW each.
Terna said it would build an upper reservoir with a capacity of 1.2 million cubic meters. The pumping units will be powered exclusively from the Sitia wind farm. The project is valued at EUR 280 million. More than 1,000 jobs will be created for the construction and there will be at least 100 permanent ones.


Miatlinskaya Hydro Power Plant on the Sulak river
Hydraulic engineering works
Underground structures of various application, Chief Project Engineer - M. Bikineev.
Projection of the waterworks underground structures building organization and technology, lead excavations construction development.
Development of organizational and technological solutions for the construction of the mine equalizing reservoir using self-propelled mining equipment and vehicles.
1975 - 1987.


A supply contract for pumps and motors for the Fish Passage Improvement Project at the Red Bluff Diversion Dam has been awarded.
The nearly $7 million contract went to Moving Water Industries of Deerfield Beach, Fla. The company will fabricate and send the pumps and motors to the site, where they will be used in the construction of the pumping plant facility.
The entire project is expected to be completed by May 2012. Completion of the plant is expected to improve fish passage while ensuring farmers get water for their crops.
The pumps will pump up to 2,500 cubic feet per second of water from the river to canals operated by the Tehama-Colusa Canal Authority and Corning Canal.
There is still one more construction contract to award — for construction of the pumping plant, fish screen, switchyard and site work. Those interested in bidding for the contract can visit www.fbo.gov. The solicitation number is R10PS20R33.
The project will cost an estimated $230 million with most of the funding coming form the American Recovery and Reinvestment Act.
The project is co-lead by the Tehama-Colusa Canal Authority and the Bureau of Reclamation.
A federal suit filed Thursday by the canal authority against the bureau over water allocation will not effect the progress of the Fish Passage project, the canal authority”s General Manager Jeff Sutton said.
The progress of the project can be followed at www.recovery.gov.


Hallby is an 84MW hydro power project. It is located on Angermanalven river/basin in Vasternorrland, Sweden. 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 1970. Buy the profile here.
The project is currently owned by Uniper with a stake of 100%.
Hallby is a reservoir based project. The project generated 340 GWh of electricity.
The project got commissioned in 1970.
GE Renewable Energy supplied 1 electric generator for the project. The generator capacity is 75 MVA.
For more details on Hallby, buy the profile here.


- Flood Warning for Menominee County, Michigan
- Flood Warning issued May 31 at 9:25AM EDT until June 01 at 1:51AM EDT by NWS
- Effective: Sunday, May 31, 2015 at 9:25 a.m.
- Expires: Monday, June 1, 2015 at 1:51 a.m.
...The flood warning continues for the following rivers in upper
Menominee River near McAllister affecting Marinette and Menominee
The Flood Warning continues for
The Menominee River near McAllister.
* until late tonight...Or until the warning is cancelled.
* At 6:15 AM Sunday the stage was 15.0 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring.
* Forecast...the river will continue to fall to below flood stage by
late Sunday evening.
* At 15.0 feet...Water covers the boat docks near the river gage and
there is extensive flooding of wooded lowland.


Payment & Shipping Terms:
|Type:||Vertical Check Valve||Flow Direction:||Single Flow|
|Material:||Stainless Steel CF8, CF8M||Structure:||Spring Loaded|
stainless steel swing check valve,
ss check valve
CF8M 3PC Single Flow Check Valve Stainless Steel Vertical Type
Introduction of check valve
Check valve is to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent the media back flow of the valve, also known as check valve, counterflow valve, and back pressure valve. Check valve is an automatic valve, its main function is to prevent the media back, to prevent the pump and drive motor reverse, and the container media release.
Opening and closing by the media flow and power to open or close on their own to prevent the media back valve called the check valve. Check valve is automatic valve type, mainly used for medium one-way flow of the pipeline, only to allow the media to flow in one direction to prevent accidents.
Check valve by structure, can be divided into lift check valve, swing check valve and butterfly check valve three types:
Drawing and Specification Data
|SIZE||1/4"||3/8"||1/2"||3/4"||1"||1 1/4"||1 1/2"||2"||2 1/2"||3"||4"|
Contact Person: Monica Ma


menu powered by Milonic
|You are here:||Comments and remarks to Wim Jonker Klunne|
Ethiopia is building three hydropower dams at a cost of $1,4-billion and hopes to generate millions of dollars in foreign currency by exporting excess electricity to three neighbouring countries.
The dams -- harnessing power from rivers cascading from Ethiopia's rugged, towering mountains -- are expected to produce a total of 1 155 Megawatts, the official said on Tuesday.
"By 2010, the construction of the Tekeze hydro power dam with a capacity of 300 MW, Geligele Gibe II with a capacity of 420 MW and Belesse hydro power dam with a capacity of 435 MW will be completed," said Sendeku Araya, head of public relations at the state-owned Ethiopian Electric Power Corporation (EEPCO).
"Ethiopia aims to export its excess electric power to neighbouring Sudan, Djibouti and Kenya and earn millions of dollars," Sendeku told in an interview.
He said the cost of building the dams was being covered by the Ethiopian government as well as loans from the Italian government and the European Investment Bank.
Tesfaye Batu, project manager for the construction of a $68-million power line linking Shehedi in Ethiopia to Gedaref in Sudan 194 km away, said work was progressing well.
"When the project is completed Ethiopia would earn $30 million annually for the export of 200 MW low-cost hydropower, to neighboring Sudan which is intended to replace the costly thermal generation which it is currently using," Tesfaye said.
The project is expected to be completed by 2010, he added.
Bogale Feyissa, project manager for a powerline linking Ethiopia to Djibouti, said the construction of the 283 km line supplying 40 MW to the Red Sea state is expected to cost $62-million, which the African Development Bank has agreed to fund.
Sendeku said plans to supply hydropower to Kenya was still under discussion.
Ethiopia currently generates 800 MW from four hydropower plants for domestic consumption.
News date: 19/04/2006


What kinds of gate valves are available
Posted by Bundor valve
ASK : What kinds of gate valves are available？What kind of occasions suitable for which gate valve？
BUNDOR : There are several common gate valves :
1.CI gate valve: including gray iron rising stem gate valve and gray iron hidden stem gate valve, this kind of gate valve is suitable for municipal construction, water treatment, water supply and drainage, water conservancy engineering and other fields.
2. DI gate valve: usually soft sealed gate valve, also divided into rising stem and hidden stem, this gate valve is mainly used in sewage treatment, construction fire, water supply and drainage engineering and other municipal engineering pipelines.
CI and DI gate valves belong to cast iron gate valves, which are mostly used in normal temperature and low pressure pipelines, and the medium is mostly water.
3. Carbon steel, stainless steel gate valves: these two kinds of gate valves are mostly used in high temperature and high pressure pipelines. The medium is mostly steam, oil, etc., and the application fields are petroleum, chemical industry, metallurgy, etc.
4 knife gate valve: suitable for medium pulp, mud, sewage, powder, syrup, coal slurry, ash, slag water mixture and other liquid fluids.


Grand Coulee Dam
Grand Coulee Dam is a concrete gravity dam on the Columbia River in the U.S. state of Washington, built to produce hydroelectric power and provide irrigation water. Constructed between 1933 and 1942, Grand Coulee originally had only two powerhouses. The third powerhouse, completed in 1974 to increase energy production, makes Grand Coulee the largest power station in the United States by nameplate-capacity at 6,809 MW.
GrandCouleeDamwashington0707581dltGrand Coulee DamColumbia RiverColumbiaRiverhydroelectricpowerstation


carbon project profile
300MW Hydropower Project by JHPL
The Baspa project is a run-of-the-river hydro-electric power plant with an installed capacity of 300 MW. The project activity is an initiative of Jaiprakash Hydro Power Limited (JHPL) a part of the Jaypee Group. The purpose of the project activity is to generate electricity using renewable hydro energy and sell it to Himachal Pradesh State Electricity Board (HPSEB), with a strong focus on sustainable implementation of the development project. This project is the largest hydro project implemented by the private sector in India.


HPU 3500 W Hydraulic Power Units
The HPU 3500 W Hydraulic Power-Supply, designed for fast operation of high-pressure hydraulic tool series. Providing up to 3300 bar hydraulic pressure.
- Pneumatic-hydraulic power supply for hydraulic tools.
- Workshop model for operation of engine hydraulic tool series, i.e. hydraulic jacks.
- Internal pump(s), high-pressure pipes, connections, gauges etc are of top technical quality to ensure reliability and efficiency.
- A series of power units covering most needs for most engines.
- Suitable for engines equipped with MAN B&W 900, 1500, 2200 bar tool series.
- Can also be adapted for special applications like opening SKF couplings, opening/separating turbo chargers etc.
- Twin-pump models drastically reduce pumping time with about 80% of normal time, typical pumping time for a cylinder cover will be 2-6 minutes depending on engine size.
|Can be powered by hand||No|
|Multipurpose (incl fuel injector tests)||No|
|Pneumatic inlet pressure (bar)||0-10|
|Hydraulic pressure (bar) output@input||3300@10|
|Standard safety valve setting (bar)||3300, Optional 1750 bar safety-mode|
|Hydraulic gauge (bar/160 MPa, class 1.0, Ø 160)||4000|
|Pneumatic inlet||1/2” BSP female (ISO-228-1-G-1/2)|
|Hydraulic outlet||1/4” BSP female (ISO-228-G-1/4), adapter CEJN 125 male incl|
|Dimension (LxWxH mm)||440x330x400|
|Typical engine/tool (smallest HPU)||Workshop|
|Max flow (l/min) @ 0 bar (g)||0.3@2400 bar|
|Displacement per cycle (ml)||0.23|


U.S. Army Corps OPN 21-07 (Rehabilitation of Bridge No. A-C-06 Baltimore Street Over Wills Creek)
OPN 21-07 Comment Period: December 10, 2021 to January 9, 2022
THE PURPOSE OF THIS PUBLIC NOTICE IS TO SOLICIT COMMENTS FROM THE PUBLIC REGARDING THE
WORK DESCRIBED BELOW. NO DECISION HAS BEEN MADE AS TO WHETHER OR NOT AUTHORIZATION
WILL BE GRANTED AT THIS TIME.
This project is to replace the existing Baltimore Street Bridge with a new superstructure. The new bridge will consist of steel girders, a concrete deck, and concrete parapets. The existing beam seat (which coincides with the channel walls) will be replaced. Cracks and spalls on the flood control walls supporting the bridge will be repaired. Pipes that go through the flood control walls at the top of the walls will be replaced.
POC is Robert Lewis at 410-962-2708, or via email at Robert.L.Lewis@usace.army.mil.


River condition forecast on 2014-05-21
River conditions forecasts posted on 2014-05-21 by Ottawa River Regulation Planning Board
Heavy precipitation (30 to 70 mm) was received throughout the Ottawa River watershed last week. To reduce downstream flooding most northern reservoirs have now been filled. Water levels on the main stem of the Ottawa River are expected to slowly decline over the next few days.
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1. Faster construction of Red River water project would save over $100M, officials say
Officials are making the case that speeding up construction of the Red River Valley Water Supply Project could save more than $100 million in the cost of delivering Missouri River water to eastern North Dakota.
The project is budgeted at $1.22 billion and would pump water out of the Missouri River near Washburn, North Dakota, and send it through a pipeline to an outlet near Cooperstown into the Sheyenne River, a tributary of the Red River.
The construction timeline on the state and local project will largely depend on the pace of state appropriations, which totaled $36.4 million in the 2019-21 budget and $50 million for 2021-23.
2. North Dakota says it will not take over controversial Badlands bridge project
The Little Missouri River in western North Dakota. Forum…


Hoods Landing Pump Station
Hoods Landing Pump Station Replacement
This contract was located on the banks of the Waikato River at Otaua.
Due to the close proximity to a significant waterway strict environmental controls were in place.
The site was dewatered to allow the construction of a coffer dam, the upgrade of inlet bays and platforms, replacement of the inlet screens, installation of a new outlet structure to the existing headwall, replacement of increased size pipework and reinstatement of the stopbank.


Journal of Fluid Mechanics and Mechanical Design
Published by: MAT Journals (A unit of ARV Infomedia Pvt. Ltd.) (10.46610)
Total articles ≅ 1
Articles in this journal
Published: 14 July 2020
The main agenda of the present work is to develop the inbuilt priming system for centrifugal inline pump which will be part of the centrifugal pump and could perform the priming function automatically without any external resource or additional machine. To develop this system, it is used the principle of vacuum pump which operates on the liquid ring vacuum principle. The main working fluid required for this priming pump is mixture of air and water. In this development work, it is designed the Casing chamber and impeller of vacuum pump arrangement on the same shaft of main centrifugal pump and will operate along with main pump. Water required for the priming unit is provided through external tank in priming chamber and air from the main pump and its piping will be made available for priming pump. Arrangement for service liquid and its piping in connection with vacuum pump is designed to perform the priming function automatically.


The storage capacity in a reservoir is nationally divided into three or four parts (Figure 1) distinguished by corresponding levels.
These specific levels and parts are generally defined as follows:
Full Reservoir Level (FRL): It is the level corresponding to the storage which includes both inactive and active storages and also the flood storage, if provided for. In fact, this is the highest reservoir level that can be maintained without spillway discharge or without passing water downstream through sluice ways.
Minimum Drawdown Level (MDDL): It is the level below which the reservoir will not be drawn down so as to maintain a minimum head required in power projects.
Dead Storage Level (DSL): Below the level, there are no outlets to drain the water in the reservoir by gravity.
Maximum Water Level (MWL): This id the water level that is ever likely to be attained during the passage of the design flood. It depends upon the specified initial reservoir level
Live storage: This is the storage available for the intended purpose between Full Supply Level and the Invert Level of the lowest discharge outlet. The Full Supply Level is normally that level above which over spill to waste would take place. The minimum operating level must be sufficiently above the lowest discharge outlet to avoid vortex formation and air entrainment. This may also be termed as the volume of water actually available at any time between the Dead Storage Level and the lower of the actual water level and Full Reservoir Level.
Dead storage: It is the total storage below the invert level of the lowest discharge outlet from the reservoir. It may be available to contain sedimentation, provided the sediment does not adversely affect the lowest discharge.
Outlet Surcharge or Flood storage: This is required as a reserve between Full Reservoir Level and the Maximum Water level to contain the peaks of floods that might occur when there is insufficient storage capacity for them below Full Reservoir Level.


Yaan Dajinping is a 129MW hydro power project. It is located on Wanba river/basin in Sichuan, 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 2004 and subsequently entered into commercial operation in 2007. Buy the profile here.
The project is developed and owned by Sichuan Songlin River Basin Development.
Yaan Dajinping is a run-of-river project. The gross head and net head of the project are 208m and 185m respectively. The project generated 497.62 GWh of electricity. The project cost is $144.358m.
The project construction commenced in 2004 and subsequently entered into commercial operation in 2007.
Power purchase agreement
The power generated from the project is sold to Central China Grid under a power purchase agreement.
Dongfang Electric was selected as the turbine supplier for the hydro power project. The company provided 3 turbines, each with 43MW nameplate capacity.
Dongfang Electric supplied 3 electric generators for the project. The generator capacity is 43 MVA.
For more details on Yaan Dajinping, buy the profile here.
About Sichuan Songlin River Basin Development
Sichuan Songlin River Basin Development Co Ltd is a China based hydro power development company. It owns and operates the 129 MW Sichuan Ya’an Dajinping Hydro Project located in Shimian Town, Sichuan Province.


Mersin - Turkey
TGT Electric Power Construction, Ministry of Energy & Natural Resources
1993 - 2000
Description for Limonlu Hydropower (Turkey)
Limonlu HPP comprises 4 power plants in cascade to be constructed in 2 phases on the Lamas River: Phase 1 = 50 MW and Phase 2 = 26 MW.
The Phase 1 works comprise Lamas III and Lamas IV plants:
- Weir ( H = 8 m, L = 40 m )
- Power Tunnels ( L = 5 km, D = 3 m )
- Surge Tank ( H = 16 m, D = 12 m )
- Penstocks ( No. 2, L_tot = 3 km; D = 2-1 m )
- Power Houses ( No. 2 Francis turbines; 2 x 15 MW; 2 x 10 MW )
- Roads ( L = 8 km )
- HV Transmission Line ( V = 154 kV; L = 1.2 km )
Arcichiaro Multi-purpose Project (Italy)
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Water supply system for the district of Abuja, including pipelines, pumping...
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The prestigious project of Batoka Gorge, with...
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The Gilgel Gibe hydropower plant is the first...
Legadadi Dam (Ethiopia)
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Acerenza Dam (Italy)
Water storage plant for irrigation purposes with a reservoir capacity of 42...
Nondvo Multi-purpose Project (Eswatini)
Nondvo multi-purpose dam provides potable water...
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Gibe II hydropower plant is the second stage of...


Tigray State is set to undertake a safe drinking water project at an outlay of 8 billion Birr. The project is aimed at addressing the water shortage in the state’s capital city, Mekelle.
According to the State’s Water Resource Bureau Head, Tesfamichael Gebreyohannes, the project will be undertaken from what is secured from the Chinese Government.
The project would be launched in September and scheduled to be completed in 3 years, the head noted.
When the project is complete and starts giving service, it will supply 147,000 cubic meters of water per day.
Source: Fana Broadcasting Corporation


Garden Route Dam
Client : Khubeka Construction CC
Value : R5 M
Scope of works : Garden Route Dam is a 39m high embankment dam constructed in 1980. It has a 25m wide by-wash spillway and channel on the right flank with a reinforced concrete sill, training walls ,and the upper portion of the channel lined with reinforced concrete.
The works entail raising the FSL by 2.56m by constructing a new concrete spillway upstream of the existing one and connecting onto the existing training walls. The top of the embankment, the NOC, will be raised 1.76m using earth and rock.


Alpana hydropower plant with capacity of 70.6 megawatt to be built across Rioni River in Georgia
Georgia, Tbilisi, Sept.22 / Trend N. Kirtskhalia /
It is planned to build Alpana hydropower plant with capacity of 70.6 megawatts in the region of Racha-Lechkhumi (Western Georgia), the Georgian Ministry of Energy said. Hydropower power plant will be built across the Rioni River.
Applications of those interested in the construction of hydropower plant will be accepted in the Energy Ministry until October 8.
After reading the applications the government will select the investor with the best conditions, and then clarify the issue who specifically will be engaged in the construction of new hydropower plant.


Alpha Expansion Relief Valve 6Bar 1.018091 - 462359
Product DetailsThe pressure relief valve helps to manage pressure build up within a central heating system. It is set to vent as pressure increases to ensure the pressure doesn't reach a dangerous level.
- 6 Bar
Manufacturer Model No 1.018091 Brand Name Alpha EAN 8015065319907


The harbor development projects at HDh. Nellaidhoo and N. Landhoo have been completed.
The company undertaking the projects, Maldives Transport and Contracting Company (MTCC), said that Nellaidhoo harbor development project was completed on last Thursday, whilst Landhoo harbor development project was completed yesterday.
Nellaidhoo harbor development project, valued at MVR 55.4 million, was contracted to MTCC by the Planning Ministry at the end of August 2019.
As part of the project, the company undertook dredging and reclamation operations of 62,863cbm, breakwater construction of 398m, quay wall construction of 204m, revetment construction of 50m, groin construction of 103m, installation of 1,812sqm paved area, installation of navigation lights, streetlights and a ramp under this project.
Landhoo harbor development project was also awarded to MTCC by Planning Ministry. The project is valued at MVR 35.60 million.
MTCC undertook dredging and excavation operations of 25,000cbm; the construction of a 227m quay wall; a 387m breakwater; revetment construction of 73m; groin construction of 80m; the installation of navigation lights, streetlight and a ramp as well as the installation of 1,750sqm of paved area
Physical works under the project commenced at the end of August 2021.
Within the past three years, MTCC has completed a total of 25 harbor development projects.


Areas Affected: Beauregard; Calcasieu
...The Flood Warning continues for the following rivers in
Calcasieu River Near Salt Water Barrier
Sabine River Near Deweyville
Calcasieu River At Old Town Bay
Neches River at Neches River Saltwater Barrier
Neches River Near Beaumont
Pine Island Bayou Near Sour Lake
...Flood Warning extended until late Sunday night...The Flood Warning
The Sabine River Near Deweyville.
* until late Sunday night...or until the warning is cancelled.
* At 6:45 PM Saturday the stage was 24.5 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 24.0 feet.
* Forecast...The river will continue to fall to below flood stage by tomorrow afternoon.
* Impact...At stages near 25.0 feet...Lowest roads beside the river flood around Deweyville and subject to being closed. In addition, low-lying roads in Southwest Beauregard Parish are flooded including Robert Clark Road. Flooding occurs on the south side of Niblett Bluff Park with access roads to camp houses cut off around the park. Access roads to the river in Northeastern Orange County become flooded.
* Impact...At stages near 24.0 feet...Minor lowland flooding will occur.
* Impact...At stages near 23.0 feet...The river is at bankfull stage. &&


« View county listFlood Warning
1041 AM EST SAT FEB 28 2015
...Flood Warning now in effect until Thursday morning...
The Flood Warning continues for
The Lumber Near Lumberton
* until Thursday morning.
* At 7:00 AM Saturday the stage was 15.1 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* The river will continue to fall dropping below flood stage by Wednesday evening.
* At 15.0 feet Flood waters will affect yards in the Pines area...Coxs
Pond area...and along River Road. Additional residential property will be
affected between the Pepsi plant and the river on the east side of Lumberton.
LAT...LON 3467 7916 3468 7904 3457 7891 3452 7899
3461 7907 3458 7915


JS JST 415V Submersible Pumps
JS JST submersible pumps are fitted with twin mechanical seals, carbon ceramic and silicone carbide in a lubricated chamber. The pumps have a stainless steel shaft and motor case. Cast iron motor top cover, lower motor/seal housing, pump casing, impeller and volute. Pumps are supplied with 10m of cable fitted.
Suitable for drainage of clean and dirty water.


TEHRAN (FNA)- Iran said the advancements it has made in the past years have enabled it to enter dam construction contracts with other countries. Iranian specialists now provide consultation services for the design and construction of various sizes of dams, Energy Minister Parviz Fattah told reporters on Friday.
According to the Iranian official, 95 dams are currently under construction inside Iran and such countries as Sri Lanka, Syria, and Tajikistan as well as African states have entered either dam construction or consultation projects with Tehran.
One of Iran’s most important international projects will see the construction of a $200-million hydroelectric dam in Nicaragua, press tv said.
While the construction of the Nicaraguan dam is set to begin in 2011, the project has caused serious concern in the United States as it signifies the increase of Iran’s foothold in Latin American markets.
The Iranian Energy Ministry is reportedly assessing whether to begin nearly 170 additional dam construction projects.


10 August 2012 – Some US$37 million has been spent to rehabilitate phases I and II of the Ruzizi hydroelectric power stations and finance studies and preparatory work for Ruzizi III, which is intended to increase the supply of power to three member countries of the economic community of the great lakes region (CEPGL). These are Burundi, the Democratic Republic of the Congo (DRC), and Rwanda.
The Ruzizi hydroelectric power stations have not been producing enough electricity for the three CEPGL member countries.
The 29.8 MW Ruzizi I hydroelectric dam was built at the Ruzizi River outlet from Lake Kivu in 1958. The dam delivers electricity to Bubanza and Kigoma via the Mururu substation. The 43.8 MW Ruzizi II power station was added in 1989. The planned Ruzizi III project will see the construction of a 147 MW hydropower plant on the Ruzizi River bordering DRC and Rwanda to be developed through a concession by a private investor.


Multiquip ST2038P | 1 HP 115-Volt " Submersible Centrifugal Pump
This lightweight, compact submersible centrifugal pump is ideal for moving water in multiple confined and open area applications. The unique casing design of this pump permits it to draw water to a level of 1/16-inch without having to place the pump in any kind of sump. This versatile, low maintenance pump is perfect for a wide range of operations supporting Contractors, Service Utilities, Municipalities, and Homeowners. Further, the ST2038P incorporates a rugged cast aluminum housing, internal thermal overload protection, dual shaft seals, sealed ball bearings impeller and molded 19-foot Power Cable with strain relief.
Multiquip Submersible Centrifugal Pump
1 HP Electric Motor
Built-In Overload Protection
Cast Iron/Steel Motor Casing
Ideal for Contractors, Municipalities, Home-Owners, etc.


The MULAG litter picking head USK 1200 is suitable for picking up rubbish of every type (bottles, paper, cans etc.) by means of tooth shaft and suction head.
Technical data Features Working width 1200 mm
- Hydraulic drive
- MULAG-quick change fixture incl. hydraulic hoses with quick couplings
- It is recommended to use a water sprayer to avoid dust formation
Max. speed of flail shaft 50-200 rpm Weight approx. 235 kg Max. permissible power consumption max. 14 kW Hydraulic oil pressure max. 170 bar Flow rate hydraulic oil 50 l/min Working speed depending on growth up to 4 km/h


Sero will be presenting its pump for low flow/high head applications featuring the new SHP high pressure side channel pump. It is suitable for the transfer of volatile liquids (high ends) in oil and gas, petrochemical, chemical industries and process engineering applications.
Processes requiring high heads at low flows have so far been handled with pumps operating above synchronous speed or using large impellers with narrow passages. Now Sero has developed an innovative pump providing a secondary containment (barrel) for increased safety.
The SHP comes as a high performance side channel pump in single or mulstistage design, with mechanical seal or as sealless mag drive pump according to API 610. It offers heads up to 1200 m, and flows up to 8,5 m³/h. Nominal pressure is up to 100 bar.


National Power of the UK has announced plans to develop two new hydro power plants. Construction of a £1M (US$1.5M), 590kW hydroelectric project near Auchtertyre in Perthshire, Scotland will start in April 2000 and will be completed by the end of the year. The project will supply electricity for around 2500 people.
Work at another £1M station at Glen Tarbert, near Fort William in Scotland will also start this year and be completed by autumn. The 850kW station will be powered by the waters of the Alt Corie na Creiche and Gleain Feaith n’Amean burns near Strontian. Installation of the power plant will be carried out by Hydro Contracting of Scotland, and the building of the pipeline and other civil works will be carried out by North Wales-based company Mulcair. Hydrocink from the Czech republic will supply the turbine.
The construction of both stations will be managed by Caledonian Energy, a local developer of hydroelectric projects. Both projects have secured power contracts under the government’s Scottish Renewables (SRO) scheme, which was established to encourage the development of renewable energy sources.
National Power has about 50MW of hydro capacity in the UK and aims to develop its portfolio of small hydro schemes.


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The performance of runner with splitter blades was focused in view of response improvement of hydro power plants. The runner optimization concept was redeveloped and the validation was confirmed by CFD (computational fluid dynamics) and model test. The strength resistance to fatigue failure was also confirmed. This runner design can be utilized to improve performance of existing hydro power plants as well as new plants.


EIB finances Pakistan hydropower project
19 February 2014
The European Investment Bank (EIB) has approved a long-term loan of € 100 million (US$ 137 million) to the Government of Pakistan for the construction of the Keyal Khwar Hydropower project.
The Keyal Khwar Hydropower project consists of a 128 MW run-of-river hydropower plant with a small 1.5 ha reservoir for daily regulation. Power achieved from the project is fed directly to Pakistan’s national power grid.
The Water and Power Development Authority (WAPDA) is responsible for the construction of the plant. Work started in January 2013 and is scheduled to take four years to complete.


Oman: STFA Bags Taqah Harbour Contract
The Tender Board has awarded a RO14.5mn contract for the construction of the Taqah fishing harbour.
Zawya.com reports that the STFA, a large Turkish engineering and contracting company, has won the project.
The Taqah harbour work broadly consists of construction of a 150m-long concrete quay line, construction of 1,783m breakwater, reclamation works, roads and pavements, dredging of harbour basin to 5m depth, marina facility and slipway.
Dredging Today Staff, September 26, 2012; Image: STFA


AUGUSTA BOAT HARBOUR CONSTRUCTION – AUGUSTA, WA
Client: Swan Marine Contracting
Shorewater Marine was engaged to complete a number of below water and above water tasks for the construction of the Augusta Boat Harbour.
The works included but were not limited to:
- Seabed excavation,
- Below water level Inspections
- Rock removal
- Assistance with the construction of jetty systems, boat ramp construction
- Detailed reporting.


- Flood Warning issued July 04 at 9:14PM CDT until further notice by NWS
- Effective: 9:14 p.m. on Saturday, July 4, 2015
- Expires: 9:14 p.m. on Sunday, July 5, 2015
The Flood Warning continues for the Mississippi River.
The Flood Warning continues for
the Mississippi River at Caruthersville
* until further notice.
* At 09 PM Saturday the stage was 35.0 feet.
* Minor flooding is occurring AND Minor flooding is forecast.
* Flood stage is 32.0 feet.
* The river rose above flood stage and will continue rising to near
36.0 feet by Tuesday July 07. Additional rises may be possible
* At 36.0 feet...Grain terminal area east of Blytheville, Arkansas is
flooding. In Tennessee, overbank flooding from the river is cutting
across the Barr Point. Suggs Road is flooded through the low spots.
- See more at NOAA


The pressurizer water level control system in nuclear power plant with pressurized water reactor (PWR) is responsible for coolant mass balance. The main control goal is to stabilize the water level at a reference value and to suppress the effect of time-varying disturbances (e.g. coolant leakage in primary circuit pipeline system). In the process of PWR power plant operation incorrect water level may disturb pressure control or may cause damage to electric heaters which could threaten plant security and stability. In modern reactors standard PID controllers are used to control water level in a pressurizer. This paper describes the performance of state feedback integral controller (SFIC) with reduced-order Luenberger state observer designed for water level control in a pressurizer and compares it to the standard PID controller. All steps from modeling of a pressurizer through control design to implementation and simulation testing in Matlab/Simulink environment are detailed in the paper.


Client: Middlesbrough Council
Location: Saltersgill Estate, Middlesbrough
Working with Middlesbrough Council, Lynas Engineers developed a comprehensive flood defence scheme, split into 2 phases, to ensure the protection of 306 properties on the Saltersgill Estate, Middlesbrough. Through the design and construction of the proposed flood defence systems, the 306 homes were taken from a significant risk zone into a low risk zone. The works have been designed to protect homes from internal flooding for events up to a critical 1 in 200 year storm.
Phase 1 of the scheme includes two dry basins and one wet pond, all connected, to provide 12,000m³ (12 million litres) of storage during a critical storm. Phase 2 of the scheme includes the installation of a flood defence bund with a capacity of almost 24,000m³ (24 million litres) of water during the same critical storm. The maximum combined flow rate from the two phases equates to 862l/s.
Lynas Engineers was commissioned to design and enable the hydraulic and flood modelling studies by Middlesbrough Council; in order to facilitate the construction of the proposed flood protection works. Specialist design software including AutoCAD Civil 3D and MicroDrainage was utilised to ensure the proposed methods of storage protection were robust enough to withstand the critical storms and could be constructed in a real-world environment. Lynas Engineers was also involved in the procurement of the works and undertook the role of client representative, providing site support and supervision, throughout the duration of the works. We also acted as Principal Designer under CDM.


Glass Tube Variable Area Flow Meter
They can be used to measure the instantaneous flowrate of liquids or gases in various applications.
They are designed to be installed into vertical lines.
It is installed the protection cover on the flowmeter body.
Simple construction and Economical price
Easy of installation and maintenance
Alarm (1 SPDT, 2 SPDT)


YG centrifugal oil transfer vertical pump
- Model Number: YG100-200(I)
- Brand Name: kenshine-pump.com
- Place of Origin: Shanghai, China
- Minimum Order Quantity: 1Set
- Supply Capacity: 1000Sets per month/month
- Payment: T/T IN ADVANCE
- MemberShip: Gold Member
- Inquiry Now
YG100-200(I) YG centrifugal oil transfer vertical pump Description
YG Vertical centrifugal oil transfer pump
YG vertical pipeline centrifugal oil pump is used to pump oil, kerosene oil, diesel oil, solvent, edible oil etc. medium. Liquid temperature: -20 to 120DegreeC.
YG Vertical centrifugal oil pump is widely used in oil depot, wharf, shipping, chemical, textile, environmental protection and other industrial and mining enterprises
vertical structure and the same diameter at the suction and discharge port locates on the same center line. a small area, convenient for installation and maintenance, and low construction investment. If protective cover is added onto the electric motor, the pump can be used in the outdoor.
Pump case: cast iron, stainless steel, impeller: cast iron, stainless steel, bronze, motor: standard motor or explosion proof motor. YG centrifugal oil pump is made of cast iron case and bronze impeller and driven by explosion proof motor.
Design standard: ISO2858 and JB/T6878.2-93
flow range of 1.5 to 1200m3/h, head range of 5 to 125m
|pump material||cast iron case,bronze impeller, explosion proof motor|
|centrifugal pump||transfer pump|
|booster pump||circulation pump|
|pipeline pump||oil pump|
|fuel oil pump||explosion proof pump|


Iron Gate II Hydroelectric Power Station
|Iron Gate II Hydroelectric Power Station|
|Location||Gogoşu, Mehedinţi County,
Mihajlovac, Bor District,
|Dam and spillways|
|Height||35 m (115 ft)|
|Length||412 m (1,352 ft)|
|Creates||Iron Gates II Reservoir|
|Total capacity||0.6 km3 (0.14 cu mi)|
|Catchment area||579,200 km2 (223,600 sq mi)|
|Surface area||52 km2 (20 sq mi)|
|Turbines||Romania: 10 × 32 MW
Serbia: 10 × 27 MW
|Installed capacity||Romania: 321 MW
Serbia: 270 MW
|Annual generation||Romania: 1.3 TWh
Serbia: 1.31 TWh
The project started in 1977 as a joint-venture between the governments of Romania and Yugoslavia for the construction of large dam on the Danube River which would serve both countries. At the time of completion in 1984 the dam had 16 units generating a total of 432 MW, divided equally between the two countries at 216 MW each.
The Romanian part of the power station was modernised and another 2 units were installed; the nominal capacity of the 10 units was increased from 27 MW to 32 MW thus having an installed capacity of 321 MW. The Romanian side of the power station produces approximately 1.3 TWh per annum.
The Serbian part of the power station currently has 10 units with a nominal capacity of 27 MW each and a total power generation capacity of 270 MW. The Serbian side of the power station produces approximately 1.31 TWh per annum. At the celebration ceremony for the 27 years since the power station's deployment it was announced that production in 2011 reached 1.46 TWh despite bad weather conditions.
Current total power generation capacity of the power station is 591 MW.
- Ostrovul Mare Bridge
- Iron Gate I Hydroelectric Power Station
- List of power stations in Romania
- Energy in Romania
|Wikimedia Commons has media related to Iron Gate I and II Dams.|