Boyds Corner Dam, New York
Boyds Corner Dam is on the West Branch Croton River in Putnam County, New York and is used for drinking water purposes. Construction was completed in 1872. At normal levels it has a surface area of 297 acres. It is owned by the City Of New York Dep Corona.
Boyds Corner Dam is masonry, of earthen construction. Its height is 78 feet with a length of 670 feet. Maximum discharge is 6200 cubic feet per second. Its capacity is 13300 acre feet. Normal storage is 8350 acre feet. It drains an area of 23.5 square miles.
Lakes, Dams, and Recreational Facilities Near Boyds Corner DamWest Branch Reservoir Lake Tibet Carmel Dam White Pond Lake Gleneida Stillwater Pond Roaring Brook Dam Lake Carmel Carmel Auxiliary Dike Lake Casse Lake Gilead Pelton Pond Upper(north) Wiccopee Dam Canopus Lake Lower(south)wiccopee Dam Kirk Lake John Allen Pond Middle Branch Dam Croton Falls Reservoir Wonder Lake Croton Falls Dam Diverting Reservoir Teakettle Spout Lake Bog Brook Dam #2 Cargill Reservoir Duck Pond Dam A and B Bog Brook Dam #1 Sodom Dam East Branch Reservoir Cold Spring Dam (upper) Titicus Reservoir Stephen Blodgett Pond Amawalk Reservoir Cold Spring Dam (lower) Sparkle Lake Putnam Lake Titicus Dam Amawalk Dam Mount Beacon Reservoir Nuclear Lake
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Other AreasClick the map to see lakes in other parts of the country.


Back Pressure Valve
- The Cameron® type ‘H’ type back pressure valve safely seals tubing pressure to 20,000 psi. BPV are used during the inflation of Christmas trees, BOP removal and to prevent backflow of fluid into the tubing.
- Back pressure valves reduce downtime and operating costs by allowing for repairs without killing the well.
- Sizes available from 1-1/4″ to 4″.
- The ‘H’ Two-Way style Check Valve can be installed in the tubing hanger for testing up to 15,000psi.


PWP No. 4174CD
Drainage Improvement Works in Mong Kok
The scope of project comprises construction of an underground stormwater storage scheme with a storage capacity of about 50 000 m3within Boundary Street Playground; extension of the existing Tai Hang Tung Stormwater Storage Scheme with an increase in storage capacity from 100 000 m3to 220 000 m3; and construction of about 1.2km drainage works along Embankment Road, Boundary Street; Nam Shan Chuen Road, Tai Hang Tung Road and Tai Hang Sai Street.
The project will relieve the flood risk in the Mong Kok area.
Black & Veatch Hong Kong Limited (for investigation study)
Drainage Projects Division
Yau Tsim Mong
Under planning & design


Lifegard Sea Horse 1/2 HP Self Priming Pump is manufactured with reinforced fiberglass for strength and durability. Self-priming design ensures long life. Includes a large capacity basket with see-thru lid.
Unique diffuser and impeller provide excellent pressure performance across a wide range of desired gpm flow rates
User Friendly drain plugs
1 1/2-Inch suction and discharge pots


Start Date: April 2014
Completion Date: July 2015
Total Floor Area: 3,300 sq. ft.
BECC is proud to be part of the construction team of the Green Valley Wastewater Pumping Station. This project involves the construction of a new cast-in-place concrete wet well and dry pit including an inlet channel with sluice gates at the wet well inlet, stairwells, floor trench and sump, and wet well benching. The Green Valley Wastewater Pumping Station’s three 85 H.P. submersible dry pit pumps with two pumps operating are expected to provide a duty point of 102.2 Lps at 47.5m of TDH. In addition, the project also entails the construction of a new control room which includes electrical, mechanical and HVAC systems, access hatches, an office, mechanical room and a washroom. The new control room exterior consists of masonry block veneer, asphalt shingle roofing, prefabricated wood trusses and structural steel. Exterior works com-prises of asphalt paving, landscaping and site servicing. The depth excavation for this project was 12 meters down with continuous dewatering being required.


FOLLY LANE, HOCKLEY, ESSEX
Parmarbrook carried out the main Civil Engineering works for the development of a Brownfield site and the construction of 75 residential units.
The site had many constraints including a difficult topography and ground conditions. Our design approach included the design of a new surface water retention pond to control and attenuate surface water flows to a Greenfield run-off rates which were agreed with Essex SUDS.
Due to the site levels a new Adoptable Foul Water Pump Station was required to serve the foul water flows generated on site before outfalling to the existing Public Sewers in the main Public Highway. All drainage works were designed to Adoptable Standards to the satisfaction of the local Water Authority.
Our works also included designing the upgrade of the existing site access under a Section 278 Agreement. This included off-site improvement works to the existing Highway network.
Client: Persimmon Homes
Location: Hockley, Essex


Iovskaya is a 96MW hydro power project. It is located on Iova river/basin in Murmansk, Russia. The project is currently active. It has been developed in multiple phases. The project construction commenced in 1957 and subsequently entered into commercial operation in 1960.
|Project Type||Total Capacity (MW)||Active Capacity (MW)||Pipeline Capacity (MW)||Project Status||Project Location||Project Developer||Hydropower||96||96||–||Active||Murmansk, Russia||JSC Lenhydroproject|
The project was developed by JSC Lenhydroproject. Gazprom Energoholding and Fortum Power and Heat are currently owning the project having ownership stake of 51.79% and 29.45% respectively.
Iovskaya is a reservoir based project. Iovskaya (Iovskaya Active Unit) underwent through rehabilitation & modernization during 2012-2014.Iovskaya (Iovskaya Rehab Unit) underwent through rehabilitation & modernization during 2013-2014. The project generated 536 GWh of electricity. The project cost is $22.8m.
The project construction commenced in 1957 and subsequently entered into commercial operation in 1960.
Power Purchase Agreement
Anheuser-Busch Companies and Phosagro are the power offtakers from the project.
Andritz Hydro was selected as the turbine supplier for the hydro power project. The project consists of 2 units of Kaplan turbines, each with 48MW nameplate capacity.
Power Machines was selected as the generator supplier for the hydro power project. The project consists of 2 generators.
All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.


Campbell Lake, west Missouri
Campbell Lake is on a tributary of Clear Fork Blackwater River in Johnson County, Missouri and is used for recreation purposes. Construction was completed in 1976. Its normal surface area is 2 acres. It is owned by Robert+Pearl Campbell.
Campbell Lake Dam is of earthen construction. Its height is 29 feet Its capacity is 31 acre feet. Normal storage is 16 acre feet. It drains an area of 18 square miles.
Lakes, Dams, and Recreational Facilities Near Campbell LakeClear Fork Lake Lake Buteo Foffel Lake Hunter,roberts Lake Kranz Lake Hall Lake Jaeger Lake Shumate Lake Hickory Hills Lake Ken-mar Acres Lake Glazebrooks Lake Smith Lake Sexton Lake Kallstrom Lake Hughes Lake Futurama Lake Shirley Lake Teefly Lake Teller Lake Tackett Lake Foster Lake Reynolds Lake South Lake Pertle Springs Dam Lions Lake Edmunds Lake Young Lake Weston Lake Warrensburg Country Club Lake Lake Pajastka Wilson Lake Edwin A. Pape Lake Hamilton Lake Lookout West Dam Skyhaven Lake Parkhurst Lake Easterwood Lake Hazel Hill Community Dam Maxson Lake Werths Lake
Bookmark this lake location.
Find other west Missouri area lakes and vacation ideas or return to the home page.
Other AreasClick the map to see lakes in other parts of the country.


Booster set pressure controller for automatic start and stop operation.
Control panel for submersible pumps with overloads and dry running control without probes. Maximum intensity 12A. Manual / stop / automatic operation switch.
Multi-function control panel for bore hole pumps with large screen for parameter display.
Range of floats switches for the pump control for both clean water and dirty water.
Variable frequency drivers with wall mounting or on the motor fan cover. Protection IP 55. For operation in a booster setup to 8 pumps in parallel.
Latest generation frequency inverter "ON BOARD" for the control and operation of 1 or several pumps. It is controlled by the phone via Bluetooth SMART (4.0)
Air-cooled frequency inverters to assemble on motor terminal boxes.
Variable frequency drive to control a water-cooled pump with supply power in single-phase or three-phase.
Range of pressure switches with different pressure ranges, mechanical and digital for the control of the pressure in a hydraulic circuit.


Pressure reducing valves type C 3-L
PRESSURE REDUCING VALVES TYPE C3-L – The C3 L pressure reducing valves are balanced inlet design, which are suitable for use on compressed air, gas, water and oil. These valves are ideally suitable for tank blanketing systems, where very low pressures are involved. Valves are supplied in sizes half inch to three inch with ends screwed female or alternatively flanged to customers requirements. The maximum inlet pressure is 10.0 Barg, reduced pressure ranges of 0.015 to 1.0 Barg are possible.


The River Staff Gauge is functional as a simple device that can to record the water level in an accurate way. It is functional as a big ruler, which can measure the water level of rivers in many regions. River Staff Gauge is used by the professionals who work for the construction of bridges as well as archaeologists. It provides efficiency to the river stream system and allows for simple use. The said product can indicate the water level in an efficient way. The River authorities allows the professional to make use of this instrument.


Electronic differential pressure system utilizing two metal sensor modules and one transmitter.
Differential pressure transmitter with metal sensor for measurement of pressure differences.
Differential pressure transmitter with one diaphragm seal for level measurement.
For continuous level and interface measurement in liquids.
Point level switch with extension tube for liquids in high-level temperature applications.
Point level switch for liquids with highly corrosion-resistant coating.
Point level switch for liquids in high-temperature applications.
Point level switch for liquids for FailSafe overfill prevention.
Compact vibration point level switch for liquids in all industries.
Differential pressure transmitter with two diaphragm seals for differential pressure and level.


We were asked to design, supply and install two pumping stations to remove foul water from the basements of two adjacent new build houses. The pumping stations were to be installed into pre-cast concrete chambers
• Edincare carried out a full site survey before providing a full quotation which included the dimensions of the pre-cast concrete sump that the developer would need to construct.
• The sumps were constructed to Edincare’s specification by the developer as part of the formwork for the builds.
• Edincare engineers installed the pumping stations and control equipment. On completion the pumping stations were commissioned and fully wet-tested before handover to the developer.
• Edincare provided the complete solution for the client’s needs.
• Pre-cast concrete sumps are cost effective when undertaking concrete basement formworks.
• Concrete sumps can be constructed to a larger plan than circular tanks allowing for shallower excavations.
WELL DESIGNED CONCRETE SUMPS
Concrete sumps can bring several benefits to a project. If constructed as part of the formwork for a build they can be very cost-effective. Their dimensions can also be specified to perfectly suit the site and the pumping station’s applications.
Following a full project survey, Edincare’s team can design a concrete sump to your site’s unique requirements and match it to the equipment to be installed within.
A well designed sump has sufficient storage capacity in case of an emergency, as well as the correct depth to prevent unnecessary wear on the pumps caused by too frequent starts.


|East Branch Swift River (Maine)|
The East Branch Swift River is a 10.2-mile-long (16.4 km) tributary of the Swift River in western Maine. Via the Swift River, it is part of the Androscoggin River watershed, which flows to the Kennebec River and ultimately the Atlantic Ocean.
Androscoggin River watershed
|Bay of Fundy|
|Gulf of Maine|


Profile: Process Depot specializes in supplying instrument and control systems. Our products include pressure transmitters, pressure switches, temperature transmitters, level switches, and controllers. We also offer calibration hand pumps, solenoid valves, valve manifolds, infra red flow transmitters, and indicators. Submersible level transmitter is widely used in wells & reservoirs, water treatment, and sewage treatment applications.
13 Products/Services (Click for related suppliers)
|•||Air Pressure Switch||•||Automatic Pressure Switch||•||Compact Pressure Switch|
|•||Custom-Designed Pressure Switches||•||Differential Pressure Switches||•||Digital Pressure Guages|
|•||Digital Pressure Switch||•||Digital Pressure Switches||•||Fuel Oil Pressure Guages|
|•||Industrial Level Transmitters||•||Level Transmitters||•||Level Transmitters|


The tender for the development of the main project for HPP Senj 2, whose estimated value is 8.9 million euros, envisages the development of the main project and all other documentation for obtaining building permits for the construction of a new hydropower plant. The estimated time for the completion of the main design is 24 months.
Croatian state-owned power utility HEP published two tenders related to the largest hydro project in Croatia in the past three decades – the Kosinj-Senj hydropower system.
The two tenders address the development of the main project for hydropower plant Senj 2 and the construction of a tunnel and channel Bakovac-Lika.
The construction of HPP Senj 2 will include the following buildings: compensation pool Gusic Polje 2, supply tunnel and pressure pipeline Gusic Polje 2 – HPP Senj 2 and the power plant itself with drainage tunnel and discharge into the sea.
Last year, the Ministry for Environmental Protection and Energy said that the project for Kosinj accumulation with hydropower plant Kosinj and related facilities is fully acceptable in regard to the environment and eco networks. HEP said that it will start the activities for the preparation of the Kosinj project, which includes the construction of an accumulation with three dams, the construction of HPP Kosinj and the reconstruction of the existing HPP Sklope. Preparatory works, such as the construction of access roads, started in the second half of 2019. HEP is planning to invest 500 million euros in Senj-Kosinj hydropower system, adding that the construction of HPP Senj 2 should start two years after the HPP Kosinj project. HPP Kosinj will have two units (11.5 MW and 22 MW) and will produce 250 GWh of electricity per year. The construction is expected to cost 185 million euros and would last for 56 months (five construction seasons). The second phase of the project envisages the construction of 350 MW HPP Senj 2.


May 22, 2017: HCC as a lead partner in the joint venture with HSEPL has been awarded Rs 672.99 crore contract on EPC basis for the construction of by the Water Resources Department, Government of Rajasthan. HCC’s share in the JV is 90% (Rs 605.70 crore).
The project envisages construction of a concrete gravity dam and 8.475 km long tunnel for irrigation and water supply purpose involving civil, hydro-mechanical and electrical works on EPC basis. A 21 km long access road will be also constructed to the project site. The project is to be completed in 48 months.
The project is located approximately 375 kms from Jaipur and is part of Parwan Irrigation cum Drinking Water Supply Project on Parwan river. The Parwan river is a tributary of Kalisindh river, which is the main tributary of Chambal river.


Tractebel Hydroprojekt was commissioned by Verbund Innkraftwerke GmbH with the planning of the new Töging power plant in 2014. With a total output of almost 120 MW, the new Töging power plant is the largest new hydropower plant to be built in Germany in recent years.
The new hydropower plant is located next to the power plant built in the 1920s. By increasing the dam target at the inlet to the power plant canal and increasing the expansion discharge, the installed capacity will be increased from the 84 MW achievable in the old power plant to around 118 MW. The future flood relief will proceed via the turbine idle run and a pre-regulation at the inlet to the power plant canal. The integration of the new power plant into the existing original site will create a harmonious overall picture of the historic power plant building and the new construction.
After a planning phase lasting around 5 years, construction of the power plant began in 2019. The new power plant was officially opened in September 2022.
Client: Verbund Innkraftwerke GmbH
Processing period: 2014 - 2021
Turbine type: 3 x Kaplan turbines of 39 MW each
Net head: 31 m
Expansion flow rate: 410 m³/s
Total turbine capacity: 118 MW
Control energy capacity: 700 GWh
Project planning of civil engineering works LP 1 to 7 (LP 5: excavation pit only)
Structural design LP 1 to 6 (LP 5: excavation pit only)
Health and safety coordination LPH 1 to 6
Interface coordination with Jettenbach weir sub-project


The Wolwedans Dam was completed in early 1990. The first in South Africa centre arch-gravity dam made of roller compacted concrete, fully relying on three-dimensional arch action for stability. Wolwedans Dam is a concrete dam in South Africa located on the Great Brak River near Mossel Bay, Western Cape, South Africa. The dam is the main source of water for the municipality of Mossel Bay as well as the gas-to-liquids refinery PetroSA. The dam serves mainly for municipal and industrial water supply purposes.
Visits can be arranged with the caretaker:
Tel: 044 876 0065


Centrifugal pumps rely on the centrifugal force generated by the rotation of the impeller to deliver the liquid. Divided into end suction and self-priming centrifugal pumps.
Material: cast iron, cast steel, stainless steel, plastic
We usually say that a pump belongs to a multi-stage pump, which refers to the impeller. According to other structural features, it may also be a horizontal pump, a vertical combination surface pump, a guide vane type pump, a high pressure pump, a single-side inlet type pump, and the like. So based on the difference, the name is not the same. In addition, according to the use can also be classified, such as oil transfer pumps, water pumps, condensate pumps, ash pumps, circulating pumps and so on.
What is a centrifugal pump structure?
1一pump casing；2一pump shaft；3一impeller；4一water inlet ；5一water outlet；6一bottom valve；7一control valves；8一Water funnel；9一pump base
The basic structure of the centrifugal pump is composed of six parts: impeller, pump body, pump shaft, bearing, seal ring and stuffing box.
1. The impeller is the core part of the centrifugal pump. Its rotational speed is high and the blades on the impeller play a major role. The impeller passes the static balance experiment before assembly. The inner and outer surfaces on the impeller are required to be smooth in order to reduce the friction loss of the water flow.
2. The pump body is also called the pump housing and it is the main body of the pump. It plays a supporting and fixing role, and is connected with the bracket that mounts the bearing.
3, the role of the pump shaft is to connect the coupling and the motor, the motor torque transmitted to the impeller, so it is the main component of the transmission of mechanical energy.
4, the use of transparent bearings for lubricants, add fuel to the oil level line. Too much oil must seep out along the pump shaft. Too few bearings must be overheated and burned to cause an accident! The temperature of the bearing during the operation of the pump is up to 85 degrees, and it is generally operated at around 60 degrees.
5, the sealing ring, also known as leakage reduction ring.
6. The stuffing box is mainly composed of packing, water sealing ring, packing tube, packing gland and water sealing tube. The function of the stuffing box is mainly to close the gap between the pump casing and the pump shaft so that the water in the pump does not flow outside and the outside air does not enter the pump. Always keep the vacuum inside the pump! When the friction between the pump shaft and the packing generates heat, it is necessary to rely on the water seal tube to live in the water seal ring to allow the packing to cool! Keep the pump running properly. Therefore, the inspection of the stuffing box during the inspection tour of the pump is of special attention! The packing should be replaced after about 600 hours of operation.
Centrifugal pumps power and efficiency:
The loss of the pump during the operation makes the actual (effective) head and flow of the pump lower than the theoretical value, and the power of the input pump is higher than the theoretical value.
H—The effective head of the pump, ie the amount of energy a unit of liquid receives from the pump in a gravitational field(m)；
Q—pump actual flow (m3/s);
Ne—Pump effective power，It is the mechanical energy obtained from the pump in the unit time(W)
Effective power can be written as Ne=QHρg
The power input from the motor into the centrifugal pump is called the shaft power of the pump, denoted by N.
The ratio of effective power to shaft power is defined as the total pump efficiency(η)，It is η=Ne/N
Centrifugal pump impeller：
The impeller of the centrifugal pump transmits the energy of the prime mover to the liquid in the pump through the action of centrifugal force, so that the liquid increases the speed and pressure, and the liquid in the pump is discharged, and the liquid in the inlet pipe is sucked in.
Common materials for the impeller are: cast iron HT20~40, HT25~47, cast steel ZG15, ZG25, cast copper ZGCuR, stainless steel 1Cr13, 2Cr13, 1Cr18Ni9Ti, and also aluminum cast iron.
The impeller can be divided into four types according to its structure: in the former form, consisting of the front cover, rear cover, blades and hub, called the closed impeller (Figure a); the second form, from the rear cover , composed of blades and hubs, called semi-open impeller (figure b); third form, composed of blades and hubs, called fully open impeller (figure c); fourth form, 7 by two front covers Consisting of blades, blades and hubs, there are two suction ports distributed on both sides, called double-suction impellers (Figure d).
Semi-open and full-open impellers are commonly used to transport liquids containing more impurities; double-suction impellers are often used in applications with large displacements, good cavitation resistance, and high efficiency.
A list for centrifugal pump classification methods
|According to inhalation||single suction pump||Liquid flows into the impeller from one side and there is an axial force|
|double suction pump||Liquid flows into the impeller from both sides, there is no axial force and the pump flow is almost double that of the single-suction pump.|
|According to stage||single stage||There is only one impeller on the pump shaft|
|multistage||Multistage pump have two or more impellers are mounted on the same pump shaft, and the liquid flows through each impeller in turn. The more stages, the higher the lift.|
|According to Pump shaft position||horizontal pump||Shaft placement|
|vertical pump||Shaft is perpendicular to the horizontal plane|
|According to pump casing type||segmental type pump||Pump casing is mounted on the plane perpendicular to the shaft, with long bolts between the segments and the segments.|
|split-case centrifugal pump||Pump casing is split on a plane passing through the axis|
|volute pump||fitted with a spiral pressurized water chamber, such as a commonly used end suction cantilever centrifugal pump|
|turbine type pump||Centrifugal pump with guide vane pressure chamber|
|inline pump||The pump is part of the pipeline and does not need to be changed during installation|
|immersible pump||pump and motor are integrated into the water|
|submerged pump||Pump immersed in liquid|
|shield pump||Impeller is integrated with the rotor of the motor and it is in the same sealed housing. No sealing structure is required and it belongs to a leak-free pump.|
|magnetic pump||In addition to the inlet and outlet, the pump body is completely closed, and the coupling of the pump and the motor is driven by the mutual attraction of the magnetic steel.|
|Self-priming pump||No need to fill liquid when starting the pump|
|high-speed pump||Speed increase of the shaft of the pump shaft is achieved by a speed increase box, and the general speed can reach 10000r/min or more. It can also be called a partial flow pump or a tangential booster pump.|
|Vertical barrel pump||Pump inlet and outlet take over at the same height, there are two shells inside and outside, the inner shell is composed of rotor, guide vanes, etc. The outer shell is the inlet diversion channel, the liquid is sucked from the lower part.|


Bharti Construction Company Got New High Level Bridge Project In Mahi River Lasada Bridge On Udaypur. Rajastha.
The Construction of a High-Level Bridge across the Mahi River (Lasada Bridge) on the Udaipur-Banswara Road Mahi River Bridge Project Details The construction of a high-level bridge across Udaipur-Banswara Road. The project cost is estimated at around 57 Cr. Department of PWD has announced this. It will be focused on connecting Udaipur to Banswara. A […]


In 2009, the Ingham County Drain Commissioner was petitioned by landowners to improve drainage within the Nemoka Drain Drainage District. This watershed, adjacent to Lake Lansing, had experienced chronic flooding and drainage issues. PEA Group staff members inspected the existing drainage system and problem areas, prepared a detailed hydraulic model, and developed recommended solutions.
The Drain Commissioner, on behalf of the Drainage District, authorized a design approach that included purchasing and demolishing chronically flooded houses, acquisition of new right-of-way, design and construction of low-impact drainage swales and regional detention, and the design and construction of new storm drains to replace the undersized and failing system.
In August of 2021, the watershed experienced a 200-year rainfall event, approximately 5.30 inches of rain in 6 hours. While still under construction, the completed infiltration swales and detention basins performed as expected with no flooding.


Level sensors detect the level of substances that flow, including liquids, slurries, granular materials. Different level meter / switches are designed for various applications in Banna such as buoyancy level switch, electrical float level meter, hydrostatic pressure liquid level transmitter, Liquid Level/Temperature Switch, magnetostrictive level sensor, photoelectric liquid level switch and ultrasonic level meter.
Point or continuous liquid level monitoring
Standard equipped HART protocol Product List
Automatic gain control and temperature compensation.


Construction work of Subansiri Lower Hydroelectric Project is underway
Construction work of Subansiri Lower Hydroelectric project has been ongoing in war footing despite the adverse situation caused by second wave COVID-19 pandemic. The Ministry of Power has already targeted to commission the mega hydroelectric project within 2023 and to generate electricity. Then the constructing organization NHPC has accelerated the construction works of the project receiving the green signal of the Union Government. In the meantime, 50 per cent construction of the power house of the project has been completed while the progress of the construction of the main dam and the intake tunnel is 70 per cent as per a source.
Notably, the 2,000MW Subansiri Lower Hydroelectric Project ( SLHP ) is located on Subansiri River at Gerukamukh in the border area of Assam and Arunachal Pradesh. The construction of the project started in 2005 and was due to be completed in 2010. The project was delayed due to stiff opposition over its potential environmental impact. From 2011, the construction works were stalled for an indefinite period because of strong resistance. The resistance to the project was shown in the form of a far-reaching anti-dam movement by various organizations like All Assam Students’ Union (AASU), Asom Jatiyatabadi Yuba Chatra Parishad (AJYCP) and Krishak Mukti Sangram Samiti (KMSS). It is alleged that the dam is located in a seismic zone and it is significantly under-designed to resist earthquakes. The fluctuation of water level in the river is also feared to affect the ecology in the lower Subansiri region in future. As a result, the target commissioning date of the project was pushed back to 2023. However, the construction works resumed from October, 2019 The project is expected to be completed in 2023. The project is being developed as part of India’s 50,000MW hydropower programme initiated in May 2003. NHPC signed a memorandum of agreement (MoA) with the Assam Government in August 2019 and received approval for the project.
As per information from the source, various machinery parts of the project, along with other construction materials have been transported from the other States to the project site at present despite the night curfew declared in order to contain the spread of COVID-19 pandemic. It is alleged that the COVID-19 protocol has not been followed in the project site in this regard.
The source further stated the water level of the catchment area of the project has risen since Friday due to the heavy downpour. As a result of it, the overflowing water, penetrating through the diversion tunnel, has once again posed threat to the cofferdam of the project like the previous years. The source added that the overflowing water has also posed threat to the guard wall of the power house which collapsed last year.


Review of the design of the new bridges and drawing up of a planning for the railway line at the Mae Nam Pasak Dam in Thailand
Client Thai Government
Project description Construction of 24 km of new railway lines due to the construction of the “Mae Nam Pasak Dam” in Thailand. This project involves the construction of a new single track line in the artificial lake: 5.7 km on 5 viaducts, on 4 bridges and on 18 km of a single track embankment.
TUC RAIL's assignment Review of the preliminary design of the new bridges and preparation of a preliminary construction schedule.
Period 1996 - 1998


In centrifugal pumps, the interaction between the rotating impeller and the stationary diffuser generates specific pressure fluctuation patterns. When the pump is operated at off design conditions, these pressure fluctuations increase. The resulting rise of mechanical vibration levels may negatively affect the operational performance and the life span of mechanical components. This paper presents detailed pressure fluctuation measurements performed in a high speed centrifugal pump stage at full scale at various operating conditions. The impeller and stationary part (diffuser, exit chamber) of the pump stage have been equipped with piezo-resistive miniature pressure sensors. The measured data in the impeller have been acquired using a newly developed onboard data acquisition system, designed for rotational speeds up to 6000 rpm. The measurements have been performed synchronously in the rotating and stationary domains. The analysis of pressure fluctuations at the impeller blade trailing edge, which had significantly larger amplitudes as the pressure fluctuations in the stationary domain, allowed the detection and exploration of stalled channels in the vaned diffuser. This stall may be stationary or rotating with different rotational speeds and number of stalled channels, depending on the relative flow rate and the rotational speed of the pump. The stall yields pressure fluctuations at frequencies which are multiples of the rotational speed of the impeller and generates additional sources of mechanical excitation.


- Flood Warning issued July 03 at 11:05AM CDT until July 05 at 1:00AM CDT by NWS
- Effective: 11:05 a.m. on Friday, July 3, 2015
- Expires: 1 a.m. on Sunday, July 5, 2015
...The Flood Warning is cancelled for the following rivers in
Lamine River near Otterville affecting Cooper County.
...The Flood Warning continues for the following rivers in
Big Creek at Blairstown affecting Cass...Henry and Johnson Counties.
Blackwater River near Blue Lick affecting Cooper and Saline
Missouri River at Waverly affecting Carroll...Lafayette and Saline
Missouri River At Miami affecting Carroll...Chariton and Saline
The Flood Warning continues for
The Missouri River At Miami.
* until late Saturday night.
* At 8:28 AM Friday the stage was 18.8 feet.
* Flood stage is 18.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
early Saturday morning.
* At 18.0 feet...Low-lying rural areas outside of levees begin to
Location FS Stage Day/Time Forecast
Miami 18 18.8 Fri 08 AM 18.6 this afternoon
- See more at NOAA


Celec – Santiago Hydroelectric Power Plant 3600 MW – Morona Santiago - Project Profile
"Celec – Santiago Hydroelectric Power Plant 3600 MW – Morona Santiago - Project Profile" contains information on the scope of the project including project overview and location. The profile also details project ownership and funding, gives a full project description, as well as information on contracts, tendering and key project contacts.
The "Celec – Santiago Hydroelectric Power Plant 3600 MW – Morona Santiago - Project Profile" is part of Timetric's database of 82,000+ construction projects. Our database includes a 10+ year archive of completed projects, full coverage of all global projects with a value greater than $25 million and key contact details for project managers, owners, consultants, contractors and bidders.
Celec, Ecuador’s state-owned power generation company is undertaking the construction of the Santiago Hydroelectric Power Plant project in Morona Santiago province, Ecuador.
The project involves the construction of a hydroelectric power plant with a capacity of 3,600MW. It includes the construction of a powerhouse, a substation, a dam and tunnel, the installation of turbines, generators and transformers, and the laying of transmission lines.
It will use Namangoza and Zamora river's water.
On November 13, 2013, Celec has signed a contract with Comisión Federal de Electricidad de México (CFE) for the feasibility study.
Study works are underway.
The project involves the construction of a 3,600MW hydroelectric power plant in Santiago, Morona Santiago province, Ecuador.
The US$5,000 million project includes the following:
1. Construction of a hydroelectric power plant
2. Construction of a powerhouse
3. Construction of a substation
4. Construction of a 150m dam
5. Installation of turbines
6. Installation of generators
7. Installation of safety systems
8. Laying of transmission lines
Reasons To Buy


Italian industrial company Salini Impregilo has secured a $575m engineering, procurement and construction (EPC) contract for the development of a Nenskra hydroelectric project in Georgia.
The contract was awarded by the JSC Nenskra Hydro consortium comprising the Korea Water Resources Corporation [K-water] and the Georgian government.
Salini Impregilo won the contract beating out competition from the Europe and Asia for the 280MW project.
The project will comprise a main dam, a weir on the Nakra river, a transfer tunnel, a headrace tunnel to the powerhouse and the actual open-air powerhouse with four vertical-axis Pelton turbines.
The asphalt face rockfill dam will have a capacity to store 183 million cubic meters of water.
The 9m high and 50m long weir on the Nakra river and the 14.4km long associated transfer tunnel with a 3.5m diameter will transport the river water to the new reservoir, optimizing the project’s performance.
Work on the project must be completed over a period of around five years, starting from the signing of the contract.
Upon completion of the Nenskra hydroelectric project, Georgia will be able to increase its energy exports, while contributing to the economic and social development of the country.
The project will guarantee the required energy supply during the winter season and to maximize the export capacity during the summer season.
Image: The Nenskra hydroelectric project will increase Georgia’s energy exports. Photo: courtesy of Salini Impregilo S.p.A.


Guildford Flood Alleviation Scheme on the Way
The Environment Agency, together with its partners, is working on a project that will reduce the risk of flooding directly from the river (fluvial) and indirectly from overwhelmed surcharged local drainage systems in Guildford town center.
According to the EA, the design of the scheme is at an early stage of option selection but investigations have confirmed that a combination of permanent and temporary flood defense walls will bring significant flood-relief benefits to parts of the town.
The Guildford flood alleviation scheme project team is developing a series of options that include building new flood walls and using temporary defenses in the flood plain of the River Wey. The project team has started to analyse the options available in detail. This initial work will be presented in consultation events being planned for later in 2018.
Following these consultations, the next stage will be to design the scheme and to secure necessary funding and approvals to build the selected approach.
Once the preferred design option has been selected, there are various approvals that must be sought (including planning permission) before construction can begin. Provided the scheme is fully approved and funded, the earliest construction can be expected to start is summer 2019. Construction is expected to be completed by 2020.


It adapts the gerolor design, which has a higher distribution accuracy and mechanical efficiency.
Double-rolling bearing design, which has a greater lateral load capacity.
Credible design of shaft seal, which can bear higher pressure and be used in parallet or in series.
Direction of shaft rotation and speed can be controlled easily and smoothly.
A variety of connection types of flange, output shaft and oil port.


10 September, 2002 11:50 - During the last 24 hours, water level at stations between Chiang Saen and Savannakhet receded. Meanwhile, water level from Khong Chiam to Stung Treng rose significantly. Water level at Pakse, Koh Khel is higher than the alarm stage; at Tan Chau and Chau Doc, it has been exceeded flood stages since August 23. In coming days, water levels at stations from Chiang Saen to Savannakhet continue to recede, from Khong Chiam to Pakse rise up in 1 - 3 days, then will fall down; from Stung Treng downstream to the Delta continue to rise. Water level at Kompong Cham, Neak Luong will be exceede the alarm stage.


Nijne-Bozsu is a 50.9MW hydro power project. It is planned on Chirchik river/basin in Tashkent, Uzbekistan. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently at the partially active stage. It will be developed in multiple phases. Post completion of the construction, the project is expected to get commissioned in 1943. Buy the profile here.
The project is being developed and currently owned by Uzbekenergo.
The project is expected to generate 207.4 GWh of electricity.
Post completion of the construction, the project is expected to get commissioned in 1943.
Power Construction Corporation of China is expected to render engineering procurement construction services for the hydro power project.
For more details on Nijne-Bozsu, buy the profile here.
Uzbekenergo (Uzbekenergo) is a state-owned power generation company. It generates, transmits and distributes electric power to its customers in Uzbekistan. The company operates thermal power plants, hydro power plants, and heat power plants. Uzbekenergo produces and sells thermal energy to domestic and industrial consumers in various cities across the country. It also operates in coal sector. The company operates power plants in Fergana, Kashkadarya, Syrdarya, Tashkent and Navoiy regions and the Republic of Karakalpakstan. Uzbekenergo is headquartered in Tashkent, Uzbekistan.


PT Hydraulics announces new pump series
PT Hydraulics Australia has added a new pump series for use in harsh environments to its range.
The Dynex PF500 Series pumps are designed for use in remote locations around the world. Featuring individual piston check valves with positive sealing action to provide contamination tolerance and greater volumetric efficiency at pressures to 10,000psi (700 bar).
Dynex panel system pumps have a low input power requirement of 0.7 kW at 700bar, making them ideal for use in remote locations with limited power supply. Four pump models offer flows from 0.83 to 2.65 L/min at 1,800rpm.
The high pressure pumps are compact and can be used on portable power packs for high-torque wrenches and other service tools. Split-Flow models, which provide multiple outputs from a single pump, are suitable for tool circuits with changing flow and pressure requirements.
Dynex spool and seated design directional valves are rated to 10,000psi (700 bar) and 15,000psi (1040 bar). Models with explosion-proof solenoids are approved by UL and CSA for use in hazardous environments. Models are also available with air or oil operators.


Zhejiang Qingtian Pumped Storage Power Station Project Signed:
Recently, the signing ceremony of the investment agreement for the Qingtian Pumped Storage Power Station Project in Zhejiang was held. Hangzhou Iron and Steel Group, East China Survey and Design Institute, and Qingtian County signed an investment agreement for the pumped storage power station project. It is understood that the Qingtian project of Jupu Township will have a total project investment of 8.3 billion yuan, installed capacity of 1,200MW and will be deployed into the Zhejiang Power Grid for peaking and application.
McCoy Energy Storage Project ID: 76204


LAHORE: The Mangla Dam on Tuesday filled to its maximum storage level of 1,242 feet above the sea level.
The dam had been completed in 1967 with a storage capacity of 5.88MAF, which reduced to 4.6MAF due to sedimentation till 2004.
Subsequently, the Mangla Dam Raising Project was initiated in 2004 in view of maximising hydro potential of the Jhelum. The project was completed in December 2009. The dam was raised by 30 feet to increase storage level to 1,242 feet above sea level. “Thus, water storage capacity of the reservoir increased to 7.4 MAF from 4.6 MAF. As a result of the raised dam, the additional 2.88 MAF water can irrigate another 1.314 million acres of land, and generate 644 million additional units of electricity per annum from the existing power station,” reads a statement issued by a Wapda spokesperson.
With completion of the raising project, Mangla has become the biggest reservoir in the country surpassing Tarbela, which has a live storage capacity of 6.45 MAF.
BRIEFING: Federal Secretary for Water and Power Muhammad Younas Dhaga will have a background briefing and interactive session with the energy correspondents at 2:30pm on Wednesday (today) here at Wapda House.
The Wapda chairman, National Transmission and Despatch Company managing director and Lahore Electric Supply Company CEO will also attend the briefing.
Published in Dawn, August 17th, 2016


ISLAMABAD: Chairman WAPDA Engineer Lt Gen Sajjad Ghani (Retd) has directed the project management to make concerted efforts for minimizing adverse impact of the recent flood due to Nai Gaj Dam, being constructed by WAPDA on River Gaj, 65-Km North-West of Dadu in Sindh province. He expressed these views while presiding over a meeting to review post-flood scenario on Nai Gaj Dam Project.
The meeting was attended by Member (Water) WAPDA, General Manager (Projects) South, Project Director Nai Gaj Dam and Project Managers of the Consultants and the Contractor.
A detailed presentation was made during the meeting about pre and post-flood situation on the project.
It was briefed that the construction work on the project has been resumed last month, which remained suspended about five months due to the devastating flood in the project area.
At present, work is continuing on different sites of the project including the main dam and the spillway.
The Chairman, while underlining the significance of the project, emphasized upon the project management to chalk out a contingency plan to offset possible delays in the project.
Nai Gaj Dam is a multi-purpose project, with main objectives to store water for irrigated agriculture, mitigate floods and generate low-cost hydel electricity.
It will have a gross water storage capacity of 300,000 acre feet with command area of 28,800 acres of land.
Installed generation capacity of the project stands at 4.2 MW. The project is scheduled to complete by the end 2024.


ISLAMABAD: Prime Minister Nawaz Sharif has directed the secretary water and power to expedite the financial proposal for Diamer Bhasha dam so as the physical work on the the project is started before the end of 2017.
The Prime Minister approved in principle the financing plan of the dam today, presented to him by the secretary water and power, Radio Pakistan reported.
The proposal based on self reliance will fund the dam portion of the project from PSDP allocations and WAPDA generated resources while the rest of the financing for the power generation portion will be arranged on commercial basis by the ministry either through WAPDA or through leasing its existing projects.
The Council of Common Interests (CCI) had approved Diamer Bhasha Dam project for construction in the year 2009.
The storage capacity of the existing dams is fast depleting due to silting and the country losing on its agricultural production after every few years due to a dry season, needs to be overcome by constructing more reservoirs.
Diamer Bhasha Dam will provide 8.1 MAF of gross storage of which 6.4 MAF will be the live storage and a capacity to produce 4500 MWs of cheap and clean energy.
The prime minister also appreciated the fact that the land acquisition for the dam has been completed with the efforts of the ministry and the Gilgit-Baltistan administration.


Rongnichu is an 113MW hydro power project. It is located on Rongnichu river/basin in Sikkim, India. The project is currently active. It has been developed in single phase. The project construction commenced in 2010 and subsequently entered into commercial operation in 2021.
|Project Type||Total Capacity (MW)||Active Capacity (MW)||Pipeline Capacity (MW)||Project Status||Project Location||Project Developer||Hydropower||113||113||–||Active||Sikkim, India||Madhya Bharat Power|
The project is developed and owned by Madhya Bharat Power.
Rongnichu is a run-of-river project. The hydro reservoir capacity is 0.33 million cubic meter. The gross head and net head of the project are 425.5m and 404.1m respectively. The penstock length is 812m. The penstock diameter is 3m. The project generated 384 GWh of electricity. The project cost is $160.871m.
The project construction commenced in 2010 and subsequently entered into commercial operation in 2021.
Litostroj Power was selected as the turbine supplier for the hydro power project. The company provided 2 units of pelton turbines, each with 56.5MW nameplate capacity.
CG Electric Systems Hungary Zrt supplied electric generator(s) for the project.
All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.


General Fluid Flow and Single Phase Flow
- Fluid flow definitions
- Single phase fluid and velocity in a pipeline
- Pressure drop equations and correlations
On the first day, participants will be given a quick introduction to fluid flow including definitions. Single phase fluid, fluid velocity in a pipeline, and single phase pressure drop equations and correlations will be discussed.
- Concept and definitions
- General and simplified equations
- Flow patterns and pattern maps
Day two of this course will focus on multiphase flow. Concepts, definitions, flow patterns, and general and simplified equations will all be covered on this day. Flow pattern maps and pressure drop correlations will also be discussed.
Multiphase Flow (Cont.)
- Mechanistic models
- Comparison of pressure drop estimation methods
- Transient multiphase flow models
The third day will continue the discussion of multiphase flow. Mechanistic models and the comparison of pressure drop estimation methods will be covered. Participants will also learn about transient multiphase flow models before participating in class exercises.
Operational Considerations and Metering of Multiphase Flow
- Operational considerations
- Type of corrosion under multiphase flow
- Multiphase flow metering
Day four will cover operation considerations, types of corrosion under multiphase flow and how to control it, as well as the different technologies, principles, and applications of multiphase flow metering.
Fluid Flow Simulator: Pipesim
- Fluid flow simulator
The last day will be completely about the Fluid Flow Simulator that will introduce participants to Pipesim. After this attendees will participate in a workshop.
Production engineers and facilities engineers.


Iran Foreign Minister Ali Akbar Salehi says the Islamic Republic will soon begin construction of a second hydropower plant in northern Tajikistan.
“The project for the construction of the Ayni power station on the Zeravshan River in north Tajikistan will soon be commenced by Iran,” Salehi told reporters on Friday.
He added that the agreement for the launch of the project was reached during his talks with the Tajik President Emomali Rahmon, on the sidelines of the 11th ministerial meeting of the Asian Cooperation Dialogue in Dushanbe.
Salehi said Iranian experts have previously carried out the feasibility study and other technical tests of the project and the construction will start once the joint Sangtuda-2 project has become operational in the country’s south, he added.
Sangtuda-2, which was completed with the assistance of Iran through USD 220 million of investment, includes a dam and a 220-megawatt hydropower plant on the Vakhsh River in Tajikistan’s province of Khatlon.
Iran invested USD 180 million in the construction of the power station, which is to become operational at full capacity later this week.
By Press TV
The Iran Project is not responsible for the content of quoted articles.


The suction system is equipped with a dilatory stainless steel spring located inside the collection bellow. The spring limits the dimensions and allows a constant suction level and collection capacity.
The graduation on the lower part of the system allows checking the quantity of fluid collected.
Each system is equipped with an extension tube with flow regulator and relevant multi-gauge connector adaptable to drainage tubes between 6 and 18 CH diameter for PVC drains connections.
Bellows are available with a capacity of 50, 200, 500, 700 ml with the connecting tube.


Aiming at problems of low energy storage efficiency and unstable energy output of existing accumulators, this paper proposes a novel constant pressure elastic strain energy accumulator based on the rubber material hyperelastic effect, which can store and release energy with steady constant pressure. Based on exergy analysis method, constant pressure elastic strain energy accumulator charging/discharging energy storage efficiency is analyzed. Then Mullins effect on the rubber airbag multiple charging/discharging cycles is studied. Finally, a test platform is set up to verify the energy storage efficiency, expansion and contraction pressure stability of the rubber accumulator during charging/discharging cycles. Compared with enthalpy analysis method, experiment results show that energy storage efficiency calculation by the exergy analysis method is more accurate. In more than 200 cycle tests, rubber airbag energy storage efficiency is always higher than 76%, and expansion pressure and contraction pressure errors under steady state are less than 2.92e-3MPa and 1.79e-3MPa, respectively. The results show that the rubber airbag can be used as an effective energy storage component, which is very meaningful for energy recovery in pneumatic or hydraulic systems.


It comprises: a 20 x 5 m radial gate, four 20 x 2,2 m hinged hatches, an 8 x 3 m log flume and a 95 m baffle wall. The rapids in Funnefoss in the Glomma river were used for mill operations, both flour and timber, as early as 1850. The paper mill, which was built in 1875, burnt down in 1877. However, a pulp factory was established at the same place. A smaller power station was built in 1919 to safeguard the power supply for the factories and the surrounding communities in Odal, in Akershus County.
During the last expansion, leading up to the start of the first turbine in 1975, the dam construction was combined with a road bridge. Rock material from the blasting while building the power station and the 440 metres long warping drain was levelled and filled with top soil. This resulted in 20 acres new farmland after the expansion.
Discharge flow close to the natural flow
Absorption capacity of the two tubular turbines is 440 m3/sec, while the flood diversion capacity of the dam is 3800 m3/sec. The spring flood in 1995 came close to this limit.
The preliminary investigations of the dam gates showed that the relations between the discharge flow and water level above the dam would not alter as a consequence of the expansion.


oa Civil Engineering = Siviele Ingenieurswese - Founding improvement using geosynthetics at the Cape Town harbour : geotechnical engineering
In 2013, Transnet National Ports Authority (TNPA) commenced with upgrading of the existing fire-fighting system of the oil tanker terminals in the Port of Cape Town (Figure 1). This included the construction of a new pump station, which would house booster pumps on the ground floor and a 250 kilolitre water reservoir directly above the pump station on the first floor. The design bearing pressure exerted on the ground by this new structure would be 150 kPa.
The pump station site is located inside the Port of Cape Town. The fill material (the placing of which started in 1965) comprised hydraulically backfilled material derived from dredging activities, and highly variable end-tipped imported material.
The objective therefore was to design a stable and effective foundation capable of handling loads from a dynamic structure (the pump station) on a highly variable, weak soil deposit.
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Turkmenbashi Desalination Plant II
Turkmenbashi – 2016
This water treatment plant will be built on the east coast of the Caspian Sea, with the aim of supplying drinking and utility water, with a production capacity of 50,000 m3 per day fresh water, using reverse osmosis technology. The plant will have two intake water tanks each with a capacity of 5,000 m3, and 4 fresh water tanks each with a capacity of 10,000 m3. The project also includes the installation of a 91,100 meter pipeline that will supply drinking water to “Guwlymayak-Kyyanly” and “Turkmenbashi Airport” regions. The plant will be built on a total area of 73,500 square meters and the construction is projected to be completed in 2016.


The contractor has been mobilized to the site to start construction work after award of the contract for Kurram Tangi Dam Project (Stage-I).
Lt Gen Muzammil Hussain (retd)) Chairman, Pakistan Water and Power Development Authority (WAPDA) stated this during his visit to Kurram Tangi Dam site located in North Waziristan Agency of the Federally Administered Tribal Areas (FATA) in third week of November.
Kurram Tangi Dam is a significant project for socio-economic uplift of the people of the far-flung areas of FATA and Khyber Pakhtunkhwa. Chairman WAPDA directed the project management to make it sure that the project is completed within stipulated timeframe.
With gross water storage capacity of 1.2 million acre feet (MAF) and power generation capacity of 83.4MW, Kurram Tangi Dam is a multi-purpose project. WAPDA will complete the project in two stages. Stage-I will be completed in about three years. On completion of the Stage-I, more than 16,000 acres of land in North Waziristan Agency will be irrigated, while about 18 MW of electricity will also be generated.
Wapda Chairman also visited Mohmand Dam Project site in Mohmand Agency of FATA. During the visit, he said that detailed engineering design of Mohmand Dam is likely to be completed in February 2017. Afterwards, the processes will be initiated for approval of the project by the Government of Pakistan, financial arrangements and award of contract.
The Chairman said that in view of its benefits, Mohamand Dam is a project of paramount importance as it will not only store water and generate electricity but also help mitigate floods in Peshawar, Charsadda and Nowshera.
Mohamand Dam Project has a gross water storage capacity of 1.3 MAF and power generation capacity of 800 MW.


Ratle Hydropower Project
The Union Cabinet recently approved the Ratle Hydropower Project of 850 MW. The cabinet has nodded to an investment of Rs 5,281.94 crores in the project. The project is located in River Chenab.
About the Ratle Hydropower Project
- It is a joint venture of Jammu and Kashmir State Power Development Corporation and National Hydroelectric power corporation. The share of NHPC in the project is 49% and that of Jammu and Kashmir State Power Development Corporation is 51% respectively.
- The project is to be commissioned within sixty months.
- The project is expected to provide direct and indirect employment to more than four thousand individuals.
- The project includes 133 metres tall gravity dam and two power stations.
- The main power station of the project will contain four 205 MW Francis Turbines.
- The auxiliary power station of the project will contain 30 MW of Francis Turbine.
- The foundation stone to construct the dam was laid by Prime Minister Manmohan Singh in 2013.
Status of the Project
- The project did not start till 2015.
- In 2017, the World Bank allowed India to construct the dam. The Indus Water Treaty was signed after nine years of negotiations between India and Pakistan with the help of World Bank.
- The project received severe objections from Pakistan.
Pakistan’s Stand on the Ratle Hydropower Project
According to Pakistan, the Ratle Hydropower Project violates Indus Water Treaty. According to Indus Water Treaty, the western rivers such as Indus, Chenab and Jhelum were allocated to Chenab. According to Pakistan, as the project is built across Chenab, it violates the treaty. However, the treaty also says that the waters can be used by India for specified domestic and agricultural use as provided by the treaty. The eastern rivers such as Beas, Ravi and Sutlej are to be used by India. Accordingly, India has constructed Bhakra Dam on Sutlej, Thein on Ravi and Pandoh and Pong dam on Beas.


The Karkheh multi-purpose dam project is the largest public works project in Iran. E Failer and R Espandar describe the merits of this multi-purpose scheme
With a surface area of 1,648,000km2, Iran is a vast country with a varied climate and both arid and wet regions. Annual rainfall varies from 25mm in the Loot desert to about 2000mm in the Caspian Sea region.
The mean annual rainfall in Iran is 250-260mm, which is less than one- third of the global mean annual rainfall (860mm). About 72% of the country’s total rainfall is lost through evaporation leaving about 120x109m3 of available water, making it among one of the world’s dry regions. As such, Iran is determined to make use of its available water resources. Appreciating the role that water plays in national development, various programmes have boosted efforts in recent years to construct dams, manage wastewater and launch scientific projects for exploiting existing water resources. The total utilised water supply for the country is 82x109m3, of which 76x109m3 is used in agriculture, 5x109m3 for domestic and sanitary use, and 1x109m3 for industry.
In Iran the management of surface and ground water resources, implementation of water supply projects, and water supply management for agriculture and domestic use are carried out by regional water authorities. These are governmental organisations affiliated to the Ministry of Energy.
Massive projects of national interest, such as the Karkheh dam project, are implemented under the responsibility of the Iran Water and Power Resources Development Company (IWPC), formed in 1989. Other huge hydro power projects including Karun IV (1000MW), Karun III (3000MW), Masjed-e- Soleiman (2000MW – see IWP&DC, July 1999, pp18-22) and Upper Gotvand (2000MW) are also being constructed under the management of IWPC. All design work for the Karkheh dam project has been carried out by the Iranian consulting company mahab-ghodss. lahmeyer International of Germany has been retained to check, review and approve all the study and design works on behalf of the owner (IWPC). The engineering services of both consulting companies will continue until the impounding of the reservoir is completed.
The Karkheh dam project, located in the province of Khuzestan some 20km west of the city of Andimeshk, is considered to be the largest public works project in Iran and one of the largest dam projects in the world presently under construction. The project is named after the third biggest river in Iran, the Karkheh river, with an average annual flow of some 188m3/sec at the dam site (Pay-e-Pol hydrometric station). The climate within the 43,000km2 catchment area varies greatly with temperatures of minimum below -25°C, and maximum 50°C, over the year. The mean annual precipitation within the catchment area varies within 300-800mm, half of which usually falls in winter. The Karkheh river is well known for its high flood potential mainly caused by storms and snowmelt in the Zagross mountains. The largest flood recorded during the past 46 years had a peak flow of about 5200m3/sec. The simulated probable maximum flood (PMF) gives a peak discharge of 23,700m3/sec at the dam site with a flood volume of about 8.1x109m3.
The Karkheh dam project has been designed as a multi-purpose project providing irrigation water for some 320,000ha of fertile land in the lower Karkheh basin, generating electric energy of about 950GWh/year, and controlling the river flow during flood seasons. The project’s most significant benefits will be related to the increased production of agricultural goods such as cereals, rice, sugar cane, soya, vegetables and fruits. The foreign currency savings made by producing the goods in Iran instead of importing them will be in the region of US$380M/year. The generation of electric energy is a secondary benefit, resulting in annual earnings of about US$40M.
Some 55% of the electrical energy produced will be firm energy, representing the most reliable energy source for the Iranian grid. Since the power plant is designed to generate peak power, a re-regulating dam will be constructed some 10km downstream of the Karkheh dam and will incorporate an 8MW power plant. The Karkheh power plant will be connected to the Iranian transmission system by two 400kV transmission lines. Implementation of the Karkheh dam will provide flood protection to 800km2 of agricultural land in the flood plains, which is estimated to save about US$17M annually.
Impounding of the huge reservoir, with a total storage capacity of some 7.6x109m3, began in March 2000 and is scheduled to finish in about 22 months. During the summer of 2000 irrigation water will be released for agricultural purposes.
In July 2000 the embankment dam and the concrete works of the spillway were 86% complete and 72% complete, respectively.
Contracts and project cost
In line with the general policy of the Islamic Government of Iran to support local industries and to boost the Iranian economy, all construction, supply and erection contracts for the Karkheh dam project were awarded to Iranian companies. During the spring of 2000 some 5300 labourers were employed at the project site and a further 1500 in various factories. Subcontracts were awarded to foreign companies for the supply of heavy equipment such as turbines and generators, and special civil construction works.
In 1992 the first works started with the construction of the river diversion works, which had a contract value of US$28.6M. In April 1994 the main contract was awarded to the Iranian construction company, Sepasad, for the construction of the earthfill dam and the spillway at a cost of US$247.7M. Then 11 months later, in March 1995, the contracts for the hydromechanical equipment for the spillway and power tunnels were awarded to Sadid and Neyr Perse for a combined contract value of some US$51.2M.
A package for the electro-mechanical equipment (400MW) for the power house was awarded to Farab for a price of US$185.1M in mid 1996. The civil works for the power house are being completed by SAB for some US$32M. The Rah-Sahel construction company was selected for the construction of the Dasht-e-Abbas conveyance tunnel at a contract value of US$43.9M.
It is scheduled that all civil works for the project will be finalised by mid 2001 and the power plant will start commercial operation by the end of the same year. The total project costs will then reach US$622M which, for a project of this size, is very low.
The entire project was financed mainly by the Ministry of Energy with a small component of ECA finance for the electro-mechanical installations.
The river diversion scheme required before the construction of the embankment dam comprises four reinforced concrete culverts, each 10.5m high, 5m wide and 790m long, along with a 60m high upstream cofferdam (subsequently integrated into the main dam) and a 20m high downstream cofferdam. The concrete culverts were constructed in an open pit requiring excavation of 1.5M m3 of soil. The concrete culverts had to be designed for the full earth pressure from the 127m high dam and had a total concrete volume of 223,000m3 with an average reinforcement content of about 60kg/m3 concrete.
During the river diversion phase, the waterflow through the culvert system was controlled by bulkhead and fixed-wheel gates (10.5m high and 4.6m wide) which were installed and operated in an intake tower with four 30m high shafts. A 110m long and 35m wide stilling basin is arranged at the outlet of the culverts to avoid erosion and damage during flood periods.
The entire river diversion scheme was designed to discharge safely a flood with a return period of 100 years, with peak flow of 7080m3/sec. Under this flood condition the combined discharge capacity of the four culverts would reach 3680m3/sec when impounded (to an elevation of about 163m asl).
Several alternative river diversion schemes were reviewed during the feasibility study phase in addition to the selected culvert concept. These were mainly: •An open channel with one diversion tunnel.
•Diversion tunnels only.
•A combination of culverts and tunnels.
Because of poor geological conditions, in particular the low compressive strength and moduli of deformation of the surrounding rock mass, the temporary rock support measures needed for tunnels and slopes were extensive. Therefore from a safety, economics and construction point of view the culvert concept was finally found to be superior.
Prior to impounding, three culverts were converted into bottom outlets to ensure that the downstream water demand can be maintained. At elevation 220m asl (normal reservoir water level) the total discharge capacity of the three bottom outlets will be 360m3/sec. The fourth culvert was concrete plugged and serves as access and ventilation for the three bottom outlets.
The 127m high earthfill dam, constructed from sandy gravel conglomerate fill with a central clay core, was designed with upstream and downstream slopes of 1V: 2.25 H and 1 V:1.8 H, respectively. The total length of the 12m wide crest of the dam is 3030m, and the dam contains 32M m3 of earth material, making the Karkheh dam one of the biggest embankment dams under construction worldwide. During the months of December 1999 and January 2000 the maximum daily and monthly peak placing rates reached 43,500m3/day and 904,000m3/month, respectively.
Because of its weak foundation conditions, the dam is supported with a wide upstream stability berm (at elevation 140m asl) and two wide downstream stability berms (at elevation 170m asl and 135m asl). The upstream slope of the dam is protected with a 2m thick layer of limestone riprap which is quarried 70km from the dam site. For cost reasons the limestone riprap was replaced with soil-cement at lower levels (below elevation 192m asl).
The central clay core features upstream and downstream slopes of 1V:0.25 H and consists of a mixture of 60% clay and 40% sand and gravel. The clay core was constructed in lifts of 13-15cm compacted by means of sheep foot rollers (four passes) and smooth rollers (two passes). The core material has a moisture content of 12-15%. The clay core is protected on the upstream and downstream sides with sand/gravel filters of varying thickness (4-7m) depending upon the height of the dam section.
Again because of the heterogeneous foundation condition caused by pervious alluvium and weakly cemented conglomerate interbedded with impervious mudstone layers, a positive cut-off wall was constructed to minimise seepage under the dam foundation. About 5% of the conglomerate has no fine grain matrix (open gravel conglomerate) and consequently has a high permeability of about 100 Lugeons.
Seepage control by means of cement grouting was envisaged during the initial design phase. However grouting tests indicated that the construction of a reliable grout curtain by means of conventional grouting practices was questionable. Eventually a 2930m long plastic concrete cut-off wall (modulus of elasticity 2000-5000MPa) with a maximum depth of 80m was selected. The total area of this cut-off wall reaches about 142,000m2, being one of the largest ever constructed worldwide. The thickness of the cut-off wall varies between 0.8-1m for different sections of the dam depending upon the height of the dam. The cut-off wall extends 2-8m into the overlying clay core to keep the seepage gradient within allowable limits and to reduce tension stresses in the adjacent core and in the upper part of the wall. Downstream of the cut-off wall a 1300m long drainage and inspection gallery (3.2m high and 2.6m wide) was constructed with a total concrete volume of 46,000m3.
A large selection of construction equipment was employed for the construction of the earthfill dam comprising: 358 tip trucks, 11 dumpers, 79 loaders, 74 bulldozers and 30 compactors (sheep foot and smooth).
Spillway The spillway is located on the right abutment and is a conventional chute spillway with a stilling basin as an energy dissipation structure. The spillway was designed to discharge the predicted PMF peak flow of 23,700m3/sec, resulting in a maximum outflow of about 18,900m3/sec.
The spillway has a 110m wide and 25m deep approach channel. The gated overflow weir is equipped with six radial gates, each 18m high and 15m wide with a radius of 22m; a 700m concrete chute of 110m constant width; and a 164m long stilling basin.
To achieve optimum hydraulic conditions, 25m high concrete guide walls are constructed on both sides of the approach channel upstream of the weir structure. The weir structure itself is subdivided with 4m thick and 59m long concrete piers into six 15m wide bays. The concrete piers also act as supports for the access bridge from where the stop logs can be placed for maintenance purposes.
The bottom of the chute is lined with 1-1.5m thick high velocity resistant reinforced concrete. The longitudinal and transverse joints in the bottom slab are sealed with waterstops to prevent high velocity flow penetrating into the foundation. A systematically arranged drainage system is provided underneath the slabs to eliminate potential uplift pressures. For maintenance and repair purposes the chute is divided into two equal sections by a partition wall extending down to the stilling basin. The side walls of the chute were designed to provide a freeboard of 0.6m for the 10,000-year flood and are 8-13.5m high. To prevent cavitation damage to the concrete caused by the high flow velocities (maximum about 42m/sec), three aerators were constructed along the chute.
The chute terminates in a 164m long stilling basin (at elevation 93m asl), which was designed for the 1000 years flood, giving a conjugated depth of about 31.5m. An open cut pit with a maximum depth of 61m had to be excavated to reach the foundation level of the stilling basin which was about 26m below the natural ground water level.
Dewatering this pit was done using surface pumping with an average capacity of 1000 litres/sec. The uplift stability of the stilling basin during spillway operation represented a challenging design task because of the deep foundation level and the high ground water level. Several counter measures were studied including pumping systems, tension piles, slab weight and drainage systems. Finally, on the basis of costs, construction time and reliability a 7m thick concrete slab with an extensive drainage system was selected to safeguard the stability of the stilling basin during operation. The concrete side walls of the stilling basin are of the gravity type with heights up to 34m. In constructing the spillway and its stilling basin, total volumes of earth of 1.6Mm3 and 3.6Mm3, respectively had to be excavated. Altogether 758,000m3 of concrete was placed.
For the production of this huge volume of concrete, batching plants with a total nominal capacity of about 335m3/hr were mobilised, achieving monthly production rates of up to 40,000m3. To control the heat of hydration, Type II portland cement, ice chips and cooled water were used. The ice chip production plant had a capacity of 8tons/day.
Power intake and waterways
The power intake is a conventional submerged six-barrel bellmouth structure located on the left abutment of the dam with two bellmouths feeding one power tunnel. Therefore each of the six bellmouth structures were designed for half of the rated turbine discharge of 163.8m3/sec and are equipped with fixed trashracks each with an area of 264m2. Overall the power intake is 60m long, 23m deep and 20m high, with a total concrete volume of 21,850m3.
Each power tunnel is provided with a gate shaft about 85m downstream of the power intake which houses 8.5m high and 4.8m wide fixed wheel gates. The three concrete-lined pressure tunnels of 436-456m length have an internal diameter of 7.2m which reduces to 5.3m along the high head tunnel section. With these diameters, flow velocities of 4m/sec to 7.4m/sec result at rated conditions.
The 70cm thick tunnel linings are steel reinforced with about 120kg of steel per m3 of concrete.
All three power tunnels are steel lined (ST-52), starting about 15m upstream of the dam axis. The steel liners are between 287m and 300m long, of varying thicknesses (20mm, 28mm and 30mm) depending on the internal water pressures.
The power house was designed and constructed as a conventional surface powerhouse 117.5m long, 53m wide and 55m high. It is located on the left abutment immediately downstream of the embankment dam and houses all electro-mechanical equipment for the three 133MW capacity generating units. Three butterfly valves are also installed within the power house.
The construction of the surface power house required 91,200m3 of concrete and excavation of about 3M m3 of soil/rock material consisting of weakly cemented conglomerates and mudstone. All excavated material was used for the construction of the earthfill dam. About half of the excavated construction pit, which had maximum slopes of 100m height, was located below the natural groundwater level. An extensive dewatering system by means of wells and pumps had therefore to be installed.


CS, AS, SS Hydraulic Safety Valve, DN80-250mm
China Valve Industry Co., Ltd.
Valves, ball valves, Gate Valves
Hydraulic Safety Valve manufacturer China Valve Industry offers Hydraulic Safety Valve in carbon sttel, alloy steel, stainless steel, DN80-250mm.
Hydraulic safety valve is used as standby equipment of breather valve. The pressure of inhaling and exhaling is higher than breather valve. When breather valve fails or disc is frozen in the winter, liquid seal of hydraulic safety valve will be destructed to avoid oilcan being damaged. Hydraulic safety valve is installed at the top of oilcan, being used with breather valve.
Nominal diameter DN: DN80-250mm
Materials of body: CS (carbon steel), AS (alloy steel), CS (stainless steel)
, ball valves
, Butterfly Valves
, Check Valves
, Gate Valves
, globe valves


The buffer tank is installed in the utility room or basement. Its purpose is to cover peak demand. It compensates for periods when the booster pumps are pumping at a higher rate thanthe loading pump. With a buffer volume of 500 litres, it is capable of meeting the water usage requirements of large buildings.
The buffer tank is also used to draw water from the mains supply when the rainwater storage tank is empty. A fully automatic, electronic control system detects the fill levels in the buffer and storage tanks. The electronic control system then starts up either the pump in the storage tank or the mains water top-up and shuts the system down again automatically when apredefined fill level is reached.


« View county listFlood Warning
850 PM CDT WED MAY 25 2016
The Flood Warning continues for
The West Fork Trinity River Near Boyd.
* At 815 PM Wednesday the stage was 16.58 feet.
* Flood stage is 16 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue rising to a crest near 17 feet
by Thursday morning. The river should fall below flood stage Friday
* At 16 feet, Minor overbank flooding is expected. A few rural roads
will begin to be affected. Minor farm and ranch land adjacent to
the river will be affected.
LAT...LON 3319 9774 3300 9758 3305 9746 3316 9756


The vacuum pump assists the vacuum pumping operation of the stainless steel self-priming pump chamber. The vacuum reaches a certain value, the suction pipe is filled with water and quickly injected into the pump chamber, and the stainless steel self-priming pump starts to work normally. At this time, the clutch lever is pulled from the "combined" state to the "separated" state by manual operation, and the clutch is idling and the vacuum pump stops working. Stainless steel self-priming pump is a hydraulic machinery for pumping water. It is assembled from pump body, rotating assembly, faucet assembly, exhaust cover, and inlet pipe, outlet pipe and retaining net. Starter motor, power linkage, and total rotation Under the push of the impeller centrifuge, the bubble surges upwards, generating suction, and the air of the inlet pipe is discharged from the pump body through the outlet pipe, the air is drained, and the water flows out through the outlet pipe. The pump has excellent performance and deep suction. The flow is large, the work saves labor and time, and it is the best pump machinery in the real society.
The stainless steel self-priming pump dispenser has a complicated structure, and the submersible pump has more faults. Because the pipeline is in a negative pressure state, it is easy to generate oil and gas to form a gas resistance. The internal structure of the submersible pump refueling machine is simple, and the failure rate is very low. The submersible pump of the oil storage tank will not be bad for more than ten years. The pipeline is also relatively simple, but because the pipeline is in a positive pressure state, the sealing requirements of the pipeline are high, and if a pipeline breaks, a large amount of oil will be sprayed. Of course, the submersible pump system also has corresponding preventive measures. In addition, the power distribution of the submersible pump is slightly more complicated.
Stainless steel self-priming pump is a kind of submersible pump. Because most submersible pumps are made of cast iron or plastic, it is difficult to meet the needs of customers by using submersible pumps made of these materials. Many corrosive media cannot discharge. Such as acid-alkaline liquids; this is one of its characteristics. Another feature is that it is resistant to high temperatures in addition to rust.
Diesel engine water pump diesel engine fire pump


> HPT Series High-Efficiency Hydraulic Cone Crusher...
> HST Single Cylinder Hydraulic Cone Crusher
> C6X Series Jaw Crusher
> HPT Series High-Efficiency Hydraulic Cone Crusher
> Spring Cone Crusher
> CI5X Series Impact Crusher


The project was approved by the County Commissioners at the 1st Hearing held September 3, 2020. Draft engineering is complete and under review. A Final Hearing for further consideration of the project will be scheduled once all engineering has been completed.
This petition is requesting improved outlets for both surface and subsurface drainage. The work to be proposed includes open channel restoration, subsurface drain improvements, and surface grading improvements.


The Feasibility study and Preparation of Detailed Design and Bidding Documents for construction of hydropower plant with 26.5MW installed capacity
and 85 GWh annual electrical energy generation is in progress.
The total estimated cost of the project is USD 6.35 Million and financial assistance is provided by Asian Development Bank under Sustainable Power
Sector Support II Project. The project is commenced on 24 September 2012 and completed 80% of Reviewing the Feasibility Study and will be completed
by 24 January 2014.
The ADB has agreed to fund the construction of this project under ADB loan of 2014.


Channel Retaining Walls
Project Type Application
Concrete channels are a vital component to overall flood control plans. Urban areas can be quickly inundated with stormwater and a reliable method is required to quickly vacate the excess runoff. Architects often turn to concrete channels for their capacity to move large volumes of water rapidly.
Fast Tilt provides a quick, economical solution for the construction of these channels, providing a reliable solution for controlling and draining water while protecting the environment and the surrounding structures.


European Bank for Reconstruction and Development (EBRD) signed on Monday, an agreement to extend €54 million loan to Italian energy provider Petrolvilla.
The loan will be for the finance of a hydro power project in Bulgaria, Reuters reported. Petrolvilla will build a cascade of 9 hydro power plants along the Iskar river, (40 km North from Sofia), with a total installed capacity of 26 MW. The project is on the amount of €80 million. EBRD will provide €34 million of the loan, syndicating up to €20 million to Unicredit Bulbank, Reuters informed. The power plant is foreseen to be completed in 2011 and targets to increase the use of renewable energy. (ibox.bg)


« View county listFlood Warning
917 AM EST TUE MAR 3 2015
The Flood Warning continues for
the Ochlockonee River near Havana (US 27).
* Until late Thursday night.
* At 8:15 AM Tuesday the stage was 25.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 25.0 feet.
* Forecast: The river will continue rising to near 25.2 feet by this
evening. The river will fall below flood stage Thursday evening.
* Impact: At 25.0 feet: This level is considered minimum flood stage.
Downstream from the gage, a few hunting cottages and fish camps
will be affected.
LAT...LON 3058 8439 3049 8443 3047 8448 3043 8447 3047 8438 3056 8436


Altaf Hamid Rao,
MIRPUR (AJK): Water level in the country’s largest AJK-based reservoir of Mangla dam has started rising swiftly as water level in the reservoir was recorded on Saturday as 1160.80 feet against the maximum conservation level 1242 feet with live storage 2.233 MAF of the water, official sources said.
The minimum operating water level in the dam is 1050 feet, the sources told this APP Correspondent on Saturday. The inflows of Jhelum river at Mangla was reported as 35200 cusecs with the outflows of 10000 cusecs from the Mangla dam reservoir, the sources said.
The overall position of the river inflows and outflows at Tarbela, Mangla and Chashma along with the reservoirs levels and the barrages remained on Saturday as under:-
Rivers: Indus at Tarbela: Inflows 259900 cusecs and Outflows 204300 cusecs, Kabul at Nowshera: Inflows 52700 cusecs and Outflows 52700 cusecs, Jhelum at Mangla: Inflows 35200 cusecs and Outflows 10000 cusecs, Chenab at Marala: Inflows 87900 cusecs and Outflows 54300 cusecs.
Barrages: Jinnah: Inflows 264000 cusecs and Outflows 256000 cusecs, Chashma: Inflows 240100 cusecs and Outflows 232800 cusecs, Taunsa: Inflows 214600 cusecs and Outflows 186600 cusecs, Panjnad: Inflows 10000 cusecs and Outflows Nil cusecs Guddu: Inflows 160200 cusecs and Outflows 127700 cusecs, Sukkur: Inflows 113100 cusecs and Outflows 57500, Kotri: Inflows 51600 cusecs and Outflows 9800.
Reservoirs (Level and Storage):
Tarbela: Minimum operating level 1386 feet, present level 1533.29 feet, maximum conservation level 1550 feet, live storage today 5.104 million acre feet (MAF).
Mangla: Minimum operating level 1050 feet, present level 1160.80 feet, maximum conservation level 1242 feet, live storage today 2.233 MAF.
Chashma: Minimum operating level 638.15 feet, present level 641.60 feet, maximum conservation level 649 feet, live storage today 0.051 MAF.
The inflows and outflows of River Indus at Tarbela and Chashma, River Kabul at Nowshera and River Jhelum at Mangla have been reflected as mean flows of 24 hours, whereas the other flows have been gauged at 6.00 a.m, the sources added.


LCP OU-1 Final Cover Construction Design Report
This Draft 100% Design Report presents design analysis, plans, and specifications for the LCP OU-1 final cover area construction. The final cover construction includes installation of a low permeability geomembrane barrier to minimize infiltration, construction of a permanent stormwater drainage system designed to increase flows to Wetland A, and restoration as a native grass and wildflower meadow. Other future potential site uses are possible based on the closure design.
The design elements presented in this Draft 100% Design Report for LCP OU-1 final cover area construction include:
- Drawings for construction of the final cover system
- Specifications for construction of the final cover system
- Drawings and specifications for the management of stormwater from the completed
- Requirements for management of the site during the construction of the final cover system
Construction of the final cover system is expected to occur in the second half of 2014 after completion of the Ninemile Creek removals.
Appendices are at the repositories.


① water isn’t filled, increase the water pump inlet height or reduce the installation position. ② The suction pipe is leaking, it need to replace the suction pipe. ③ Debris blocking, this is a common situation. There is debris lead to the impeller abnormal operation, or the pump head of the check valve block, resulting in the motor running slow. As long as the timely clearance of debris in the impeller channel can be.
2. Insufficient lift
The head of the pump is insufficient mainly because the outlet pressure can not meet the needs of the working condition. The causes of this kind of failure are generally cavitation of the pump and serious wear and tear of the impeller after long-term use Matching motor speed is lower than the required speed of the pump, etc. The troubleshooting method is to increase the water pump inlet height or reduce the pump installation position, the replacement of serious wear impeller.
3. Pump heating
The blockage of the impeller will lead to a heat pump. Pump heat may also the pump bearing bending, damage, rolling shaft clearance is too small. Timely replacement of bearings, in the bearing housing and bracket cover between the installation of gaskets, adjust the concentricity of bearings can solve the pump heating failure.
4. Low-speed or overload operation
Low speed or overload operation of the water pump. One case is man-made. When the original distribution motor has trouble, a motor is randomly assigned for use. The motor and the loading capacity of the pump are mismatching, then results in operation trouble. We should strictly in accordance with the pump model requirements to replace matching the corresponding motor model.
In addition, the bending deformation of the pump shaft, the actual operation beyond the range of design parameters, the friction of the rotating parts and so on. At this point, it needs to check and correct the pump shaft, control the pump capacity. To keep within the parameters allowed. If necessary, to open the pump body to check and eliminate friction.
5. Mechanical seal failure
The mechanical seal makes the two end faces of the pump tightly combine. a layer of oil film is placed on the end face to achieve the sealing effect. If the mechanical seal damage, the body will appear leakage, oil leakage. Leakage will wet the motor winding, the value of insulation resistance of the winding will reduce and the leakage current will form.
When the leakage current switches on, the leakage protector will trip. At this time, the motor needs to be removed to dry, and the mechanical seal needs to be replaced. When there is an oil mark in the inlet regulating place, first needs to unscrew the oil hole screw in the inlet regulating place and observe whether the oil chamber is filled with water. If the oil chamber into the water, the seal is bad, it should replace the seal box.
Another need to pay attention to a leakage situation is that the water pump cable root oil, this is the motor oil leakage. Generally is the sealing poor or motor winding lead unqualified or broken water pump wiring board caused. After confirming the inspection, replace the new accessories.
Post time: Aug-31-2023


Maldives Transport and Contracting Company (MTCC) has provided updates on the progress of the design and build of two harbors.
The Construction of H.A. Ihavandhoo harbor was awarded to MTCC on 26th August 2019 by the Ministry of National Planning and Infrastructure. The scope of the project include the construction of 284 meter breakwater, 179 meter revetment, 95 meter quay wall, the construction of a ramp and a walkway, construction of a 4,581.5 square meter pavement as well as installation of 20 mooring blocks, navigational lights and harbor lights.
MTCC on Monday said the work on design and build of Ha. Ihavandhoo harbor is well underway, with overall 35 percent project progress. New harbor basin dredging works for the project is currently ongoing, with 59% completion. The value of the project is MVR 48.5 million.
MTCC was awarded the construction of N. Miladhoo harbor on 25th September 2019. The project was mobilized on 25th March 2020. The project scope include dredging and excavation operations of 37,222cbm, construction of a 137 meter revetment, construction of a 248 meter breakwater, construction of a 286 meter quay wall, the development of a 1,430 square meter pavement as well as the installation of navigational lights and street lights.
According to the latest updates provided by MTCC, work on design and build of N. Miladhoo harbor also progressing well, with overall 38 percent project progress. New harbor basin dredging works for the project is currently ongoing, with 82% completion. The value of the project is MVR 42.1 million.


- Flood Warning issued May 31 at 10:20PM CDT until June 04 at 4:00AM CDT by NWS
- Effective: 10:20 p.m. on Tuesday, May 31, 2016
- Expires: 4 a.m. on Saturday, June 4, 2016
...The Flood Warning continues for...
Missouri River At Rulo affecting Holt and Richardson Counties.
The Flood Warning continues for
The Missouri River At Rulo.
* At 9:30 PM Tuesday the stage was 17.5 feet...or 0.5 feet above
* Flood stage is 17.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Impact...at 17.0 feet...Agricultural lowlands along both sides of
the river begin to flood.
- See more at NOAA


Slovenian Litostroj Power, a member of the group ENERGO-PRO, will deliver two turbines for Indian hydroelectric power plant Rongnichu. The installed output of each Pelton turbine will reach 55 MW. The newly built power plant is invested by Indian private group SARDA. The total value of the contract exceeds CZK 130m. ČKD Blansko Engineering’s hydraulic laboratory tested a model of the Pelton turbine for the Indian hydroelectric power plant in July 2017.


« View county listFlood Warning
1023 PM EDT Wed Apr 26 2017
The Flood Warning extended for
The Northeast Cape Fear River Near Chinquapin.
* until Saturday morning.
* At 9 PM Wednesday the stage was 13.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...The river will continue rising to near 13.4 feet by
tomorrow evening. The river is expected to fall below flood stage
early Saturday morning.
* Impact...At 15.0 feet...Secondary roads adjacent to the river will
begin to flood and may be impassable. Tributaries that drain into
the river will also flood secondary roads. Residents who live
adjacent to the river may need to move property to higher ground.
Fld Observed Forecast 8PM
Location Stg Stg Day Time Thu Fri Sat
Chinquapin 13 13.2 Wed 09 PM 13.4 13.1 12.7
LAT...LON 3499 7780 3481 7777 3472 7786 3472 7798
3482 7792 3498 7795


In 2018 the Millennium Challenge Account of Malawi (MCA-M) awarded Ellicott Dredges a tendered contract to supply an Ellicott Series 1270 Dragon® dredge for the Kapichira hydropower plant in Malawi.
The Millennium Challenge Corporation (MCC), a U.S.-based government agency, has been working directly with government officials from Malawi over the last several years to establish a strong foundation on which the country’s power system can successfully sustain itself over time.
A majority of Malawi’s residents rely on hydropower as their primary source of energy. In recent years, silt and sediment buildup has increased in the Shire River near the Kapichira hydroelectric power plant reservoir. The harmful debris has caused water levels to diminish significantly in the reservoir, reducing the amount of water that can be contained, limiting power ahead of the hydro plant’s turbines. The Ellicott® 1270 cutter suction dredge is expected to help improve Kapichira’s power generation by minimizing sediment in the reservoir and thus raising the amount of reservoir water volume and hydropower productivity.
The portable cutter suction dredge was recently delivered to the customer. The dredge is equipped with anchor booms and an extended spud carriage that is designed to enhance operating efficiency significantly.


National Program for Inspection of Non-Federal Dams. Rochester Reservoir Dam NH 00152 NHWRB Number 204.13, Coastal Basin, Rochester, New Hampshire. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
Pagination or Media Count:
The dam is an earthen embankment dam and consists of two distinct sections. The maximum storage capacity at top of dam is about 790 acre ft. The dam is judged to be in poor condition with major concerns which should be implemented. It is small in size with a significant hazard potential. Author
- Civil Engineering


SCH Number 2002062036
- Wastewater Treatment Facility Improvement Project
- The proposed project will upgrade selected unit processes and increase reliability of the treatment facilities. Construction will include: modification of the headworks; relocation of the primary clarifier drain pump; modification of aeration basin and blower; upgrade existing sludge dewatering facility; upgrade existing electrical system; construction of new waste gas burner; and construction of new supervisory control and data acquisition system.
2 documents in project


This range of submersible agitators is for stirring/mixing liquids and can be fixed or guide rail mounted.
Close-coupled submersible pumps
Centrifugal pumps entirely made of AISI 316 stainless steel
High flow rate split casing pump
Variable Speed Controlled - Constant Pressure
Electronic variable speed pump controller with inverter technology
Designed for high performance and energy-efficiency. It is also built for long-lasting reliability.
Submersible vertical electric pumps
Delivering Pumping Solutions
© 2018 Brown Brothers Engineers Australia Pty Ltd | Web Design by Propeller


E.M.S. Level monitor KM22
E.M.S. Level monitor KM22Level monitor KM 22 can be used for dry running protection in wells as well as for level control in tanks, ponds etc. Electrodes in the monitor sense the water level. Consequently, very accurate control is performed even in
tight spaces such as in bored wells.
The monitor cannot be used when there is fat in the water since the electrodes then become isolated. When the level monitor is used for dry running protection, the pump starts when the water level reaches the upper electrode and runs until it falls below the lower electrode. The pump restarts when the water level reaches the upper electrode. The opposite occurs when the monitor is used for filling purposes.
All models in IP class 54.
|E.M.S. Level monitor||B0510||230V|
|E.M.S. Level monitor||B0511||400V|