Data sheets

Data sheets


Narva Power Plant Project, 300 MW e Class CFB Boiler, Estonia

Narva Power Plant Project, 300 MW e Class CFB Boiler, Estonia

Project starting year: October 2012
Project completion year: December 2015

Contracting Authority: Alstom Estonia AS
Beneficiary: Eesti Energia Estonia
Partnership: ENERGOMONTAJ S.A.: in charge of mechanical construction and pressure parts
RUUKI CONSTRUCTION OY: in charge of steel structure erection and cladding works
SET LININGS INTERNATIONAL S.A.: in charge of refractory preparation and erection works
THYSSENKRUPP AUFZUGSWERKE GmbH: in charge of elevator erection works
TECNO SERVICE S.R.L.: in charge of HVAC erection works
HL: in charge of insulation erection works

Location:
The circulating fluidized bed (CFB) boiler for the NARVA project at the existing Eesti Power Plant site, is located at Vaivara, Ida-Virumaa, close to the Russian border with Leningrad Oblast in ESTONIA.

Main technical characteristics:
The plant implements the circulating fluidized bed (CFB) boiler technology at a large scale. For reduced environmental impact and increased operational flexibility, the boiler is designed to burn oil shale, peat and up to 50% co-firing of wood chips.

ENERGOMONTAJ S.A. was main contractor to perform the mechanical works of 800t/h CFB boiler, under the contract agreement IE 9201001-Y99104.

Total weight of assembled elements was around 11500 tones and mainly consists in:

a) Piping systems:
– Preassembly, erection, adjustment, welding, heat treatment, NDT of welds and hydro test of evaporator , superheating and reheating systems (water walls, headers, heat exchangers, drum, connection pipes, buckstay, supports, etc);
– Preassembly, erection, adjustment, welding, heat treatment, NDT of welds and hydro test of main boiler piping (connections pipes between evaporator and heat exchangers, supports, etc);
– Boiler secondary piping (cooling water, air , auxiliary steam, gas, fuel, etc);

b) Auxiliary equipment:
– FBHE (External Beds) , cyclones and connecting ducts, ash ducts;
– air and flue gas ducts;
– fabric compensators;
– tubular air heaters;
– solids fuel feeding system;
– fans and compressors;
– pneumatic ssh handling system;
– other specific equipment (cone valves, retort gas system, hoisting devices).

c) Installation of boiler instrumentation

During the erection works, following solutions were followed:
a) EHS:
– risk assessment;
– erection method statements;
– lifting plans and procedures;
b) Erection:
– construction methodology for the boiler;
– erection procedures of pressure parts and auxiliary equipment using cranes and lifting devices;
c) Quality:
– ASME and EN appropriate codes;
– welding and NDT procedures, welding sequences;
– quality, quality documents & reports;

Under an Engineering, Procurement and Construction (EPC) contract, Alstom Estonia AS
has designed, manufactured, supplied, installed, and is testing and commissioning the unit, including the supply of final fuel handling, CFB boiler, steam turbine, generator, flue gas treatment, automation & control and electrical systems.


 

DSC08775

 


 

DSCF0336 DSC09941

 


Gas treatment plant exhausted by Ärdal “Hydro Aluminium”, Norway

Gas treatment plant exhausted by Ärdal “Hydro Aluminium”, Norway

Project starting year: 2012
Project completion year: 2013

Contracting Authority: Alstom Power Norway
Beneficiary: Hydro Aluminium AS Ärdal Norway
Partnership:
Alstom Power Norway: design and procurement
ENERGOMONTAJ S.A.: in charge of manufacturing and erection works

Location:
“Hydro Aluminum” is located in Ärdal – a traditional district of Sogn og Fjordane, in the central-western area of Norway.

Main technical characteristics:
The factory is located within Hydro Aluminum Works, Ärdal, thus being the second largest Norwegian plant of such type and having a production capacity of 321 000 tons/year. The plant is using the bauxite extracted from a nearby mine and the bauxite from other mines, which is transported to the Works harbor from the nearby fiord.

Scope:
The filtering installation is provided for a hall where the aluminum is produced in 64 reduction pots, each having a capacity of 16 tons. The gas is collected from each reduction pot through 2 small channels converging into a channel (L: 2.2 m x h: 1.5 m). At present, the plant is provided with 5 identical filters, each with a ventilator driven by a 2 kW motor. Under the maximum capacity, such ventilator is able to circulate an air volume of 500 000 m3N/h.
The air entering into the filter is polluted with sulfur dioxide and alumina powder, this being the reason why both mechanical and chemical filtering methods are used.

The filters being used in the above-mentioned plant are using 3 filtering methods:
Filtering by cyclone filter – the reactor (vortex filtering), is in the lower side of the filter and practically, the gas from the filter supply channel is directly introduced in this reactor, that is provided with a series of elements which are modeling the air flow into a vortex. This filtering procedure is filtering the less fine, high grain particles (higher than 5-6µ).
Filtering by fabric bags is carried out in the middle part of the filtering installation, over the bunker where the alumina powder resulting from both the cyclone filter(reactor) and the bags which are blown with compressed air once these are loaded with too much dust.
Gas washing with caustic soda (NaOH) and water solution, which is carried out in the absorbers installed after the centrifugal ventilator which is transporting the gas from the bag filter into the absorber where the chemical washing is carried out.

The detailed technical solutions of the Romanian designers have been focused on the following categories of works included in the gas treatment installation:
– Electrical and automation installation works
– Sewage and water outer networks
– FRP and PP ducts fabrication and installation works
– FRP smoke stack installation works
– Execution/erection works for thermal insulations and electrical heating systems for technological ducts
– Erection works for the ventilation installation at the limestone unloading station
– Erection works for the limestone unloading station

ENERGOMONTAJ S.A. was the general contractor of the erection works for:
– the structural frame and the case of the filters
– the main equipment of the filters (air ventilators, alumina powder pneumatic transport installation)
– pipe circuits (stainless steel) – including the design, afferent to the desulphuration installation of the filtering installation
– reaction tank (stainless steel)
– lye intake circuits
– measurement and control equipment, compressed air circuits and drives
Assistance for commissioning

The fabrication
of steel plate walls reinforced by mounting frames; installation support structure; mechanical components of the bag filters, silos, stainless steel bunkers and tanks afferent to wet desulphuration installation (most of them made of stainless steel) attached to the filters was carried out within ENERGOMONTAJ S.A. workshops in Bucharest.


 

 


 

Aardal NO 2013 filtru cu saci

 


Wet flue gas desulphurization installation of Unit no. 7, Govora TPP

Wet flue gas desulphurization installation of Unit no. 7, Govora TPP

Project starting year: 21.05.2013
Project completion year:
21.12.2015 – completion of mechanical and electrical erection works
20.04÷30.05.2016 – commissioning and performance tests

Contracting Authority:Rm. Vâlcea County Council
Beneficiary: Govora TPP
Partnership:
Consortium Babcock Noell GmbH – ENERGOMONTAJ S.A.
Manufacturing and erection works: ENERGOMONTAJ S.A.
Design: Babcock Noell GmbH, Petrodesign SA, CMB, Uzin Engineering

Main technical characteristics:
Govora Thermal Power Plant is located in the industrial area, 12 km South of Rm. Vâlcea city.
Govora TPP is producing electrical energy and heat under the form of industrial steam for the chemical area units; thermal agent for heating and hot water in Rm.Vâlcea and also treated water, as thermal power carrier agent.

The objective is including:
– 2 (two) boilers operated with natural gas and having the following specifications: 420 t/h at 140 bar and 550 degrees C (or oil fuel operated under partial loads);
– 2 (two) 50 MW turbines with condensation and two adjustable intakes (10-16 bar and 0.5-2.5 bar);
– 3 (three) boilers operated with lignite and having the following specifications : 420 t/h at 140 bar and 530 degrees C;
– 2 (two) 50 MW turbines with back pressure at 1.2 bar and adjustable intake (10-16) bar.

Energy resources:
Classic fuels (coal – lignite extracted from Berbesti Area, natural gas and oil fuel).
The assembly of the desulphurization installation for Boiler no.7 of Govora TPP was designed in accordance to the Contract signed with the Client, for the purpose to limit the sulphur dioxide (SO 2) emissions at maxim 160 mg/Nm3, when the fuel being used is 97 % lignite and 3% natural gas, ash emissions are below 24 mg/Nm3.

The desulphurization process consists of:
– reduction of flue gas (SO 2) emissions;
– reduction of other pollutants (dust, hydrochloric acid, hydrofluoric acid);
– through the reaction of the limestone powder (CaCo 3 ), with (SO 2 from the flue gas, this is eliminated and the gypsum is formed as a residual product.

The detailed technical solutions of the Romanian designers have been focused on the following work categories included in the desulphurization installation:
Fabrication works (complex steel structures ~ 2300 to, erection of technological equipment ~ 1300 t)
– Reinforcement works (excavations ~ 1600 mc; guss concrete ~ 1300 mc with ~ 600 to reinforcing steel)
– Architecture works and closings highly resistant to fire (~ 4000 sqm)
– General plan coordination works, roads and vertical systematization
– Electrical and automation installation works
– Water and sewage network works
– Technological installation works, absorber equipment erection works, process tanks, flue gas channels and carbon steel ducts
– FRP and PP ducts fabrication and installation works (~1400 ml)
– FRP smoke stack installation works
– Fabrication ad installation of thermal insulation and electrical heating systems for technological ducts
– Ventilation installation works for the limestone unloading station
– Limestone unloading plant installation works
– Thermal insulation works (~ 6400 sqm)

ENERGOMONTAJ S.A. was the general contractor for:
detailed design; execution of civil & architecture works; execution of ventilation works, heating of premises, building closures, flue gas channels thermal insulations; procurement and installation of electrical and automation installations, DCS, lifting and maintenance installations, elevator, overhead bridges, electrical and manual hoists.

The fabrication of steel structures, absorber, process tanks, flue gas channels, duct supports was carried out in ENERGOMONTAJ S.A. workshops located in Bucharest, Timisoara, Dr. Tr. Severin and Rm. Vâlcea.


 

 


 

 


Wet flue gas desulphurization installation, C.E. Oltenia – S.E. Rovinari

Wet flue gas desulphurization installation, C.E. Oltenia – S.E. Rovinari

Project starting year: 2008
Project completion year:
mechanical and erection works
Unit no. 3 – 2011
Unit no. 4 – 2014
Unit no. 5 – –
Unit no. 6 – 2012

Contracting Authority: C.E. OLTENIA
Beneficiary: S.E. ROVINARI
Partnership:
Consortium ALSTOM Power Italy – ALSTOM Power Sweden – ENERGOMONTAJ S.A.
Manufacturing and erection works: ENERGOMONTAJ S.A.
Design: ALSTOM Power Italy, I.S.P.E., CMB, Professional Construct, Uzin Engineering
Builder: Zublin, Energoconstructia, Apolodor, Mecanoconstructii

Main technical characteristics:
S.E. Rovinari is part of Oltenia Energy Complex and is located at about 16 km away of Târgu-Jiu city, Gorj County. It is one of the biggest thermal power stations from România and it was commissioned during 1976 -1979. S.E. Rovinari is a power station that operates under the base regime of the national power grid and has a rated capacity of 1320 MWe, provided by 4 units, each of 330 MWh.

The project consists of the implementation of some wet type desulphurization installations – IDG to 1035 t/h and 330 MW steam boilers at the units no. 3, 4 and 6, in order to reduce SO2 contents of the flue gas generated by the use of the fossil fuels.

The installation for the retention of SO2 from the flue gas is made of:
– SO2 absorption installation;
– limestone suspension preparation installation.

Estimated technical efficiency:
– for 5400-6500 mg/Nm3 SO2 emissions at absorber input, the emission contents after the desulphuration installation is smaller than 400 mg/Nm3 SOx with three recirculating pumps in operation and smaller than 200 mg/Nm3 SOx with four recirculating pumps in operation;
– the powder contents after the desulphurization installation is smaller than 15 mg/Nm3.

Estimated economical efficiency:
– compliance to EU environment regulation provisions related to SO2 emission (Directive 2001/80/EC and Directive 2008/1/EC – for pollution prevention and integrated control);
– after the finalization of the works, the power station shall operate with lignite, fuel oil and gas, with significant reduction of So2 emissions.

The detailed technical solutions of the Romanian designers were focused on the following work categories which are part of the desulphuration installation:

– Fabrication of complex steel structures (~ 4150 to/unit)
– Reinforcement works, some including drilling and supports, substation buildings, air compressor building, gypsum pumps station building (excavations ~ 3400 mc; guss concrete ~ 3165 mc/unit)
– Architecture and enclosure works resistant to fire (~ 8660 sqm)
– General plan coordination works, roads, land arrangement
– Electrical installation works
– Automation installation and DCS works
– Water and sewage outdoor networks
– Technological installation works, erection of absorber equipment, process tanks, flue gas channels, carbon-steel ducts, installation of agitators, pumps, fittings, flue gas ventilators, oxy-blowers etc.
– FRP and GRP ducts execution and installation works
– Execution / installation works for thermal insulation and electrical heating systems to the technological ducts
– Ventilation, heating, lighting installation works
– Limestone discharge installation works

ENERGOMONTAJ S.A. was the general contractor for:
detailed design; execution of civil & architecture works: truck weighing installation and the installation for limestone discharging from trucks; execution of ventilation works, room heating, building closures, thermal insulation of flue gas channels; procurement and installation of electrical and automation installations (limited); lifting and maintenance installations, elevator, overhead bridges, electrical and manual hoists, fittings, carbon – steel circuits.

The fabrication of steel structures, absorber, process tanks, flue gas channels, duct supports was carried out in ENERGOMONTAJ S.A. workshops located in Bucharest, Timisoara and Dr. Tr. Severin.


 

10

 


 

Centrala electrica in cogenerare cu ciclu combinat de 860 MW, Brazi

Centrala electrică în cogenerare cu ciclu combinat (CCCC) de 860 MW, Brazi

Lucrari de montaj si fabricatie la Fabrica de ciment Fieni, jud. Dambovita

Lucrari de montaj si fabricatie la Fabrica de ciment Fieni, jud. Dambovita

Refurbishment works of Bulb type hydro power units of 32.5 MW within Iron Gates II Hydro-Power and Navigation System

Refurbishment works of Bulb type hydro power units of 32.5 MW within Iron Gates II
Hydro-Power and Navigation System

Project starting year: 2003
Project completion year: 2012

Contracting Authority: S.C. HIDROELECTRICA S.A.
Beneficiary: S.H. PORTILE DE FIER II
Partnership:
*ANDRITZ AG Austria – Partnership Leader and Designer
*ENERGOMONTAJ S.A. – in charge of mechanical and electrical erection works

Main technical characteristics:
Iron Gates II Hydro-Power and Navigation System (SHEN Portile de Fier II) is the second land arrangement undertaken on Danube sector and located at km 853 and at about 65 km away and downstream of Drobeta Turnu Severin city.
The objective has an asymmetric configuration due to the fact that each branch of the Danube has a dam (the first one is located on the main branch of the Danube and the second is located on Gogosu branch), as follows:
– a main power plant with 16 Bulb type hydro power units (the Romanian side with 7 HU (2÷8) of 32.5 MW + HU 1 of 27.5 MW and the Serbian side with 8 HU of 27.5 MW – not yet refurbished);
– two additional power plants on the secondary branch of the Danube, with 4 hydro power units (the Romanian side with 2 HU of 27.5 MW and the Serbian side with 2 HU of 27.5 MW not yet refurbished);
– two locks (one for each side with the following dimensions: 310/34 m and an elevation difference of 12.5 m);
– two spillway dams (the Romanian spillway dam is on Gogosu branch and the Serbian spillway dam is on the main retention front).

The scope of the refurbishment works
The rehabilitation of hydro power units, auxiliary installations of the hydro-power unit block, auxiliary and electrical installations of the power plant, intake hydro-mechanical equipment, has the scope to efficiently use the Danube potential on this sector, by achieving the following goals:
– equipment readiness for a new operation cycle;
– significant increase of equipment reliability;
– reduction of maintenance and current repair stages;
– installed power increase , from 27.5 MW to 32.5 MW and thus, of energy production;
– improvement of safety standards.

The technological process related to hydro unit refurbishment works including the hydro unit, block and power station ancillary installations has the following phases:
– dismantling;
– repair of reused parts;
– corrosion-proof and condensate-proof protection;
– remounting equipment;
– tests and commissioning.
During this program it was intervened on the whole mechanical and electrical part of the unit and on the auxiliary installations.

The main works carried out by ENERGOMONTAJ S.A. on the various sub-assemblies of  mechanical equipment:
A. Turbine works
– Turbine stator, suction cone, rotor chamber and intermediary rings
– Bulb, access column and access tube
– Generator cover, embedded parts and guide parts
– Guide apparatus, operating gears, actuators
– Turbine rotor
– Turbine shaft, generator shaft and distribution columns
– Water-oil distribution head
– Turbine and generator bearings
– Control system
B. Generator works
– Generator stator
– Generator rotor
– Ancillary installations within generator’s limit
C. Ancillary installations works
– Ancillary installation on the unite (cooling water installation; bearing lubrication installation; bearing oil injection installation; oil drain installation)
– Block ancillary installation (generator cover water drain; transformer cooling water installation)
– Power plant ancillary installation (turbine and transformer clean oil storage; high and low pressure compressed air station; hydraulic circuit draining installation and power plant dewatering installation)

The following hydro power units have been refurbished at Iron Gates II HPP – Romanian side:

Main power plant:
HU 2 of 32.5 MW – 2011
HU 3 of 32.5 MW – 2006
HU 4 of 32.5 MW – 2005
HU 5 of 32.5 MW – 2008
HU 6 of 32.5 MW – 2012
HU 7 of 32.5 MW – 2009
HU 8 of 32.5 MW – 2010


 

 


Rehabilitation works of Romanian Lock within Iron Gates I Hydro-Power and Navigation System

Rehabilitation works of Romanian Lock within Iron Gates I Hydro-Power and Navigation System

Project starting year: 06.06.2006
Project completion year: 31.05.2013

Contracting Authority: S.C. HIDROELECTRICA S.A.
Beneficiary: S.H. PORTILE DE FIER I
Partnership:
*ROMENERGO S.A. – Partnership Leader
*ENERGOMONTAJ S.A. – in charge of mechanical and electrical erection works
*HIDROCONSTRUCTIA S.A. – in charge of the construction works
*I.S.P.H. S.A. – consultant
*RECONT TM. S.A. – designer

Main technical characteristics:
Iron Gates I Hydro-Power and Navigation System (SHEN Portile de Fier I) is symmetrically located towards Danube axis and consists of :
– two hydro-power plants with a total power of 2328 MW and provided with high capacity Kaplan turbines (6 HU of 194 MW on the Romanian side and 6 HU of 194 MW on the Serbian side),
– three locks having the dimensions of 310 m x 34 m (two located on the Romanian side and one on the Serbian side) and
– a spillway dam with 14 spillways (7 spillways for each side).

In Romania, SHEN Portile de Fier I is located on Danube river, upstream of Drobeta Turnu Severin city, at km -952+959.
The Romanian lock is made for a maximum elevation difference of 34.4 m, having two stages whose axis are perpendicularly located on spillway dam axis, 310 m x 34 m chambers, 5.5 m sill depth and 10 m air volume.
The lock dimensions have been established under compliance to Danube Commission recommendations for the navigation in the Lower Danube sector, therefore, the lock was sized for the calculation convoy consisting of a tugboat and 9 barges having a capacity of 1500 tons or from 2 motorized ships having a capacity of 5000 tons.
The Romanian Lock rehabilitation works at SHEN Portile de Fier I is a project of national and regional importance due to the fact that the sluice-gate must provide a complete safety traffic on the Danube river. The equipment operation safety rising and the transit ships safety was achieved through sluice-gate refurbishment.

Three outage periods were required for the refurbishment of the Romanian lock, while the main works were grouped in three “Objectives” corresponding to the main location areas of the equipment within the sluice-gate, namely:
– Object 1 – Intermediate head: 04.06.2007 – 15.09.2008
– Object 2 – Upstream head: 01.05.2009 – 01.05.2010
– Object 3 – Downstream head: 01.04.2011 – 31.12.2011

The important works undertaken by ENERGOMONTAJ S.A. (hydro and electro-mechanical equipment) for this project are:
– replacement of flat gate – intermediate head, 34 m x 15.75 m
– replacement of service flat gate – upstream head, 34 m x 12.28 m
– replacement of safety flat gate – upstream head, 34 m x 12.42 m
– rehabilitation of repair miter type gate – downstream head, 34 m x 13.35 m
– rehabilitation of service miter type gate – downstream head, 34 m x 22.34 m
– replacement of flat valves – upstream and downstream head, 6 m x 6 m
– replacement of segment valves – intermediate head, 6 m x 6 m

Technical solutions for sizing, conception and selection of component sub-assemblies of flat gate – intermediate head:
– establishment of a gate construction solution consisting of two sections;
– sealed caisson removal from the lower section;
– driving motors coupling in the upper part of the lower section;
– replacement of the existing sliding supports with the latest generation supports made of elastomers ;
– modernization of rolling – guiding elements;
– complete replacement of hydraulic operation by the latest generation systems ;
– provision of modern, measuring and supervision sensor systems in order to ensure the gate timing;
– conception of a sealing system with highly reliable and resilient elements.

The total permanent weight of flat gate assembly: 832 781 kg

The above-mentioned technical solutions related to the steel construction and correlated to the solutions adopted to: the hydraulic operation installation; the operational parameters monitoring installation; and with the concept related to local & control tower control and sequential monitoring ensures a correct operation, thus increasing safety and operational life of the whole assembly consisting of the “flat gate” and the “hydraulic installations”.


 

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Modernization works of irrigation system, O.U.A.I. Vâlcovia, Olt County

Modernization works of irrigation system, O.U.A.I. Vâlcovia, Olt County

Project starting year: 10.05.2013
Project completion year: 30.11.2015

Contracting Authority: Agency of Rural Investments Funding within M.A.D.R.
Beneficiary: O.U.A.I. Vâlcovia Gura Padinii village, Olt County
Partnership:
Contractor: ENERGOMONTAJ S.A. – in charge of the erection works
Designer: Antrepriza Generala Indigo Design S.R.L.

The modernization and rehabilitation of the pumping station for pressure release and the underground duct network for water transport mainly consisted in the performance of the following works:
– dismantling of substation existing equipment (pumps, installations, motors, auxiliary installations, direction dampers);
– procurement and installation of technological pumping lines (a reservoir was made for 8 vertical intake pumps provided with electrical motors controlled by a completely automatic modern system with frequency converters);
The intake pumps reservoir is of caisson type (11 m x 7 m x 13 m) and gravitationally supplied through an inverted siphon uptake based on two DN1000 pipes, in parallel, where from the air must be fully extracted by the help of a vacuum pump, in view of a correct operation. The electric pumps are of centrifugal type with vertical shaft and 8 m intake columns; 6 units of 630 m/c pumping flow with 132 kW motors; 2 units of 200 mc/h with 55 kW motors.
– replacement of electrical and automation installations;
– execution of a modern, new antenna system made of PEHD, DN200 and DN250, SDR17 pipe joined by butt welding and PEHD hydrants with PE hydrant valves (L = 2200 ml).
– installation of 1250 kVA, 20/0.4 kV transformer unit in a PTAB enclosure where 8 pieces of DANFOSS frequency converters have been installed – with “cascade” type automatic control.
The outlets of the above 8 electric pumps have been connected to a collector that was supplying the actual irrigation network through a DN1000 flow meter.
– replacement of the compressed air installation;
– replacement of the existing draining installation;
– modernization of the duct valves;
– flowmeter installation at station exhaust;
– replacement of hydro-mechanical installations;
– replacement of the floater retaining installation on the pumping station intake.

Intervention works have been undertaken outside the station for the underground duct network, at the pits where the metallic components (covers, hand rails, access ladders, valves) were missing.

The gross surface afferent to Vâlcovia irrigation system is of 3596 ha and 110 sqm belong to SPP2 pumping station.

The waste generated on location (rubble, brick, plasters, metallic waste, excavated soil, concrete waste, household waste etc.) was selectively collected and recovered or removed in accordance to the waste type and to the valid environment regulations (Order M.M.D.D. no. 1798/2007) and Law no. 211/2011 provisions on the waste treatment.


 

 


Rehabilitation works of water networks, Tabaci District – Valenii de Munte, Prahova County

Rehabilitation works of water networks, Tabaci District – Valenii de Munte, Prahova County

Project starting year: 2014
Project completion year: 2015

Contracting Authority: Valenii de Munte city Hall, Prahova County
Beneficiary: Valenii de Munte city Hall, Prahova County
Partnership:
Contractor: ENERGOMONTAJ S.A. – in charge of the erection works

Location: Valenii de Munte city; streets: Bratocea, Petru Movila, Mihail Kogalniceanu, Soarelui, Lunei, Plopilor, 23 August, Ciresi, 1 Iunie, B-dul Nicolae Iorga, Cuza Voda, 8 Martie si Mihai Eminescu, Prahova County.

The following works have been proposed to be undertaken under compliance to the project:
– extension of potable water exhaust duct, Bratocea street;
– replacement of potable water distribution networks for the streets: Petru Movila, Serii, Mihail Kogalniceanu, Crinului, Soarelui, Lunei, Plopilor, 23 August, Ciresi, 1 Iunie, 8 Martie;
– extension of distribution network for Cuza Voda street, Nicolae Iorga blvd.;
– extension of distribution network for Mihai Eminescu street for the water supply of Nicolae Balcescu;
– replacement and extension of connections on the designed networks;
– instalation of valve pits on the existing and the designed networks in order to optimize the water supply system operation.

The generated production waste was collected in adequate containers and removed when accumulated.
The pollutant emissions including the noise and other distress sources: the project provided works didn’t significantly affect the environment factors (air, soil, water, human settlements), subject to the compliance to the technical project, the proper handling and operation of the machinery and the application of all actions related to environment protection, including the strict limitation of the area afferent to the execution of the works.

Solutions adopted by ENERGOMONTAJ S.A., for the project undertaking:
– the water supply system operation was optimized;
– the potable water intake and distribution was provided under maximum sanitary security terms;
– modern materials(ducts) have been used for potable water distribution;
– the system leaks have been eliminated, thus achieving a compliant metering at the level of each consumer.


 

 


Upgrading and refurbishment works for the irrigation infrastructure, O.U.A.I. Interagro, Giurgiu-Rasmiresti, Teleorman County

Upgrading and refurbishment works for the irrigation infrastructure, O.U.A.I. Interagro,
Giurgiu-Rasmiresti, Teleorman County

Project starting year: 02.12.2014
Project completion year: 12.10.2015

Contracting Authority: Agency of Rural Investments Funding within M.A.D.R.
Beneficiary: O.U.A.I. Interagro, no. 11 Giurgiu – Rasmiresti, Teleorman County
Partnership:
Contractor: ENERGOMONTAJ S.A. – in charge of the erection works
Designer: NACO EXPRESS S.R.L.

The upgrading and refurbishment works for the irrigation infrastructure of O.U.A.I. Interagro, no. 11, Giurgiu – Rasmiresti, Teleorman County consisted of the following execution stages:
– Modernization of SPP1 pumping station, electrical installations, hydro-mechanical equipment and construction works;
– Modernization of SPP18 pumping station, electrical installations, hydro-mechanical equipment and construction works;
– Replacement of irrigation networks, including SPP 1 hydrants;
– Replacement of SPP18 hydrants;

SPP1 pumping station covers a surface of 720 ha and has the following parameters:
– Total flow rate: 0.51 mc/s
– Pump height/load: 67 mca
– Installed power: 728 kW
– Power supply: 0.4 kV
The following equipment is provided for the station:
– 7 single stage, double flow, horizontal shaft (electric) pumps, 306 mc/h, H = 67 m, 75 kW ;
– 1 network refilling pump, 30 mc/h, H = 10 m, 5.5 kW ;
– 1 primer pump, 140 mc/h, 40 mbar, 11 kW ;
– 1 compressor 500 l/min, 10 bar, 4 kW ;
The main electric pumps are supplied from 5 power boards, 1 pump with frequency converter and 6 soft-starters, the role of the converter equipped pump is to adjust the network pressure. Pump suction is from the main channel on 4 pieces of DN 400 lines and the discharge is into a DN600 collector. A DN600 ultrasound flow meter was installed for water consumption metering and a 3.5 kW photovoltaic plant was installed to ensure the power supply during winter season.
About 6 km of PHD duct with diameters between 125 and 350; 300 m of PAFSIN DN 500 duct; 70 hydrants distributed on 5 antennas were replaced on field.

SPP18 pumping station covers a surface of 757 ha and has the following parameters:
– Total flow rate: 0.41 mc/s
– Pump height/load: 67 mca
– Installed power: 820 kW
– Power supply: 0.4 kV
The following equipment is provided for the station:
– 6 single stage, double flow, vertical shaft (electric) pumps, 370 mc/h, H = 67 m, 110 kW ;
– 1 network refilling pump, 30 mc/h, H = 10 m, 5.5 kW ;
– 1 compressor 500 l/min, 10 bar, 4 kW ;
The main electric pumps are supplied from 4 power boards; 1 pump with frequency converter and with 5 soft-starters; the role of the converter equipped pump is to adjust the network pressure. Pump suction is from a reservoir and the discharge is into a DN600 collector. A DN600 ultrasound flow meter was installed for water consumption metering and a 3,5 kW photovoltaic plant was installed to ensure the power supply during winter season.


 

 


Upgrading and refurbishment works for the irrigation development, O.U.A.I. SPP 7 Lipia, Buzau County

Upgrading and refurbishment works for the irrigation development, O.U.A.I. SPP 7 Lipia, Buzau County

Project starting year: 2014
Project completion year: 2015

Contracting Authority: Agency of Rural Investments Funding within M.A.D.R.
Beneficiary: O.U.A.I. SPP7 Lipia, Buzau County
Partnership:
ENERGOMONTAJ S.A.: contractor (in charge of the erection works)

Investment profile: land reclamations works – sprinkler irrigation development (modernization and rehabilitation).
Capacities:
– Modernization of pressure station – 1 piece;
– Gross total area owned by O.U.A.I. SPP 7 – 1624.00 ha;
– Net total area owned by O.U.A.I. SPP 7 – 1621.00 ha;
– SPP 7 pressure station operational flow rate – 2480 l/s;
– Total length of refurbished, underground, under pressure network – 14741.00 m;

The modernization and refurbishment works for O.U.A.I. SPP 7 irrigation improvement infrastructure consisted of the following performance stages:

OBJECT no. 1 – Modernization and rehabilitation of SPP 7 pressure station
– Dismantling of SPP7 decommissioned equipment (3 pieces of 14 NDS type pumping units; 3 pieces of Lotru 125 type pumping units and 3 pieces of Cris 125 type pumping units);
– Installation of new technological equipment and machinery:
– 8 pieces of electrical pumps with horizontal shaft (6a + 2r) and double flow rotor type ETANORM 200 – 150 – 400 GG AA10GD5B;
– 8 pieces of electrical boards, Pn = 75 KW, with soft-starter, PCL automation and pressure transducer;
– 1 piece of electrical air compressor with piston, completely equipped with EPC 630-G type control set;
– 1 piece of FUS 060 ultrasonic flow meter with 2 sound tracks, retrofit mounted on the distributor- collector (exhaust) made of Dn = 800 mm steel pipe at a distance of about 8 m (10xDn800mm) away of the exhaust of the last pump;

OBJECT no. 2 – Rehabilitation of unit I irrigation network
– The agricultural land area proposed for rehabilitation was divided in 2 units:
– unit I: with an area S = 643.00 ha, irrigated by the duct CS 1 and A1÷A12 antennas;
– unit II: with an area S = 978.00 ha, irrigated by the duct CS 2 and related antennas.

– Replacement and installation of new, CS 1 secondary duct with a total length of 3791 m with PEID pipe, PE 80, DN 500 mm – 300 mm.
– Replacement and installation of new antennas made of PEID pipe, PE80, DN 160 mm PN 6 ( A1 – A 12 ) with a total length of about 10950 m, with 158 pieces of afferent hydrants.
– Reinstatement of 7 pieces of CV1 ÷ CV7 round valve recess made of concrete, Ø 3.00 m and h = 2 m.

OBJECT no. 3 – Rehabilitation of unit II irrigation network
– Replacement of 31 hydrants afferent to the antennas connected to CS2 secondary duct.
These are intermediary, above-ground hydrants, provided with protection, h = 1.25 m and DN = 100 mm.

Two pieces of frequency converters and two pieces of condenser batteries have been installed for the power factor balance and improvement and for a productive operation of the new irrigation equipment.


 

 


Erection works of penstock Rastolita within Rastolita HPD

Erection works of penstock Rastolita within Rastolita HPD

Project starting year: 2005
Project completion year: 2011

Contracting Authority: S.C. HIDROELECTRICA S.A.
Beneficiary: S.H. CLUJ
Partnerships:
*ENERGOMONTAJ S.A. – in charge of the erection works
*AVRIL S.R.L. – in charge of the corrosion protection works

The main technical characteristics of the development:
The investment item “Rastolita Hydro-Power Developmentt” is included in the category of national interest works for the achievement, development and production of energy and is located in the North – West area of Mures county, thus providing a complex use of the river flows located in the right side of Mures river on Ilva-Rastolita-Bistra sector, within the administrative territory of Rastolita, Lunca Bradului and Vatava villages.

The main use of the development is for the following:
– ”Clean” energy production – approx. 117,500,000 KWh in Rastolita HPD with an installed power of 35.2 MW and a flow rate of 17.00 mc/s;
– Potable water supply – the development allows potable water supply system development downstream Rastolita, for the settlements located on Mures river basin and in the Transylvania Field peripheral area, within the administration of Mures, Bistrita-Nasaud and Cluj Counties.
– Rastolita downstream flows regularization – a flow rate of 6.6 mc/s shall be provided in Târgu-Mures area during the dry seasons.

The development layout consist of the following items:
– Rastolita Dam which is „rock fill with concrete mask” type having a designed height of 105 m, a dam crest length of 360 m and a base width of 350 m. The dam body is made of rock fill (V = 3,205,500 m3) and its sealing is of “mask” type with an area of approx. 84,000 m2 and a volume of 42,000 m3.
– The main headrace is though 8.52 km long underground gallery with an inner diameter of 3.5 m;
– The pressure node consists of a surge tower, butterfly valve house and penstock;
– Rastolita HPP is equipped with two Francis vertical hydro units of 35.2 MW ;

Power supply and connection to the system. The power supply is through a 110 KV line with a length of 8.9 km. A 20 kV overhead power line with a length of about 51 km exits the 110/20 KV transformer station to reach the social and technological organization locations.

The penstock is located between the valve house and ø2000/ 2 x ø1600 mm distributor from the station with a length of 685 m and an average diameter of 2.2 m.

The penstock is divided in 3 segments:
M1M2 segment located between Ml and M2 exits from the valve house with 21% slope angle. The segment inner diameter is of ø 2250 mm with a length of 184 m.
M2M3 segment located between M2 and M3, being the continuation of M1M2 segment and having 16% slope angle towards M1M2. The segment inner diameter is of ø 2150 mm with a length of 311 m.
M3M4 segment located between M3 and M4 being the continuation of M2M3 segment, ends at the station distributor and then starts with 27% slope angle towards M2M3. The segment inner diameter is of ø 2050 mm with a length of 188 m.

Expansion joints have been installed at certain distances on the segments in order to take over the expansions. The installation of a rail and a cart was required due to high slope in order to set the (6 m long) penstock segments. By the help of a 12 tf electric winch coupled with the cart, the segments have been launched downstream to the erection location where these have been set and welded on the supports.
After welding the segments, all welds have been visually examined and by ultrasounds. The segments have been corrosion proof protected both inside and outside, under “AMEROM” system with 2 1/2 sandblasting and three wet paint coats, each having a thickness of 175 µm. Three stages of pressure tests with pressure values of 8 – 30,4 daN/cm2 have been performed at the end of the erection works.


 

 


 

 


Refurbishment works of 400/110/20 kV transformer substation Gura Ialomiţei, Ialomiţa County

Refurbishment works of 400/110/20 kV transformer substation Gura Ialomiţei, Ialomiţa County

Project starting year: 2007
Project completion year: 12.06.2010

Contracting Authority: S.C. TRANSELECTRICA S.A.
Beneficiary: S.C. TRANSELECTRICA S.A.
Partnership:
Consortium SIEMENS Austria ( Leader) – ENERGOMONTAJ S.A. (in charge of the erection works)

Main technical characteristics:
The refurbishment works for de 400/110/20 kV Gura Ialomiţei substation located in Mihail Kogălniceanu village, Ialomiţa county, near Slobozia, consisted of the replacement of primary and secondary equipment (control and protection) with the latest generation, modern and performance equipment.
Gura Ialomiţei refurbished transformer substation is the second of Transelectrica for the energy transport, that is designed and built under GIS technology (Gas Insulated Switchgear – enclosed, SF6 gas insulated substation).
The equipment are compact, pollution free and not affected by pollution, operation safe and compliant to West-European standards.
The substation refurbishment was performed with the old substation in operation, without outage and on the existing location, without additional land areas. Such assembly of factors has lead to the selection of GIS solution which is achieved by primary switching equipment of the latest generation provided with: digital protection and control system; local and remote management facilities; telecommunication and teleprotection systems; HFT (high frequency transmission) and OF teleprotections.
The refurbishment works for de 400/110/20 kV Gura Ialomiţei substation shall lead to the increase of the energy node operation safety, provision of power transit between Cernavodă NPP and Muntenia and Moldova areas, reduction of operation and maintenance costs and the evacuation of the power produced Lacul Sărat TPP and the power supply of the area consumers through 110 and 20 kV substations.

Erection works undertaken by ENERGOMONTAJ S.A. for the Project:

– primary and secondary equipment (SF6 three pole circuit-breakers, disconnectors, current and voltage transformers, zinc oxide arresters, insulator lines);
– TRAFO 250 MVA and 16 MVA;
– alternative and continuous current services (600 Ah, 250 Ah, storage batteries including the rectifiers, 500 kVA genset, 20/0,4 kV – 400 kVA transformer, consumer power supply boards, distribution boards, AAR);
– control, protection and metering system;
– telecommunication installations;
– SERGI fire fighting and explosion prevention system;
– burglar, fire detection and signaling installations;
– 20 kV, low voltage and optical fibre cables;
– 110 kV and 400 kV overhead power line;
– cable channels;
– power and lighting installations; sanitation facilities, heating, ventilation, air conditioning; outdoor and perimeter lighting (poles, lighting appliances, distribution boxes); outdoor installations and connections (water, sewage, electrical).

Other works carried out by ENERGOMONTAJ S.A.:
– land arrangement ;
– environment protection arrangements;
– inner access roads;
– construction, reliability and architectural works.


 

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