References

AISI 316L sluice gates St. Mark’s Square Venice

Main object of the work:

• Supply, transport and installation of 8 new diaphragms 2000x2000mm in carbon steel and neoprene seal, protected by epoxy cycle
• Supply, transport and installation of 8 new manoeuvring mechanisms consisting of new mechanism support beam, gearbox support plates, threaded AISI 420B rods, Rotork IB series gearbox and AUMA Matic electromechanical actuator service S2 with Modbus module
• Engineering and CND on supply

Floodgates AISI 316L Piazza San Marco Venice

Main object of the work:         

• Supply, transport and installation of 8 new diaphragms 2000x2000mm carbon steel and neoprene seal, protected by epoxy cycle
• Supply, transport and installation of No. 8 new operating mechanisms consisting of new mechanism carrying beam, gearbox support plates, threaded AISI 420B rods, Rotork IB series type gearbox and AUMA Matic electromechanical actuator service S2 with Modbus module
• Engineering and CND on the supply

Functional restoration of bottom drains Roccasparvera Dam.

Main object of the work:
The work consisted of the mechanical adjustment of the two bottom outlet sluice gates, which are flat sliding, measure 3.95m x 3.69m and specifically in:

• • • Construction of access track in riverbed and tura, displacement and resurfacing with dismantling at end of operation
    • Two-stage sluice gate disassembly with machining and subsequent reassembly
    • Dimensional survey with performance of Non-Destructive Testing on diaphragm in the workshop
    • Sandblasting of surfaces to grade SA2½
    • Material carryover by welding and subsequent grinding and restoration of degraded surfaces
    • Total restoration of side and front seals and guides
    • Painting the floodgates
    • Workshop servomotor overhaul with internal cleaning followed by complete overhaul and redo of internal seal and lower seals and final painting
    • Overhaul, CND and repainting of control rods L 25m
    • Gargami overhaul with dimensional survey, material carryover by welding and subsequent grinding to restore degraded surfaces after sandblasting and final painting
    • Overhaul of drainage compartments with injections of suitable cementitious material to plug any gaps between the lining and the dam structure, carryover of material by welding and subsequent grinding to restore surfaces, replacement of particularly degraded parts with supply of new sheet metal of suitable thickness to be welded to the parts already in place, and final sandblasting and painting
    • Hydraulic power unit overhaul with complete draining of mineral oil contained in the power unit, piping and servomotors, disposal of the extracted oil, cleaning and maintenance of all power unit components, replacement of the two control solenoid valves with others of modern design, filling the system with newly supplied oil
    • Installation of a new digital display showing the degree of opening of each sluice gate in real time including supply and installation of the display including the derivation of signals departing from the piston area, supply and installation of signal transmission cables
    • Testing and return to operation of the system
    • Engineering and CND

Watertight gates Castel San Giovanni

Main object of the work:

• Supply and installation of No.1 watertight gate LxH 7500x3080mm with supporting structure
• Supply and installation of No.1 watertight gate LxH 7500x2000mm with supporting structure
• Engineering and CND on the supply

Belbrolo and Porto Mantovano floodgates

Main object of the work:

• Supply, transport and installation of No. 1 weir gate 18800x1300mm in carbon steel painted with epoxy cycle, sealed with Neoprene gaskets, equipped with sliding wheels and operating control consisting of a pair of threaded operating rods driven by reducers, couplings and supports with connection shaft and electromechanical actuator AUMA
• Supply, transport and installation of No. 1 9100x1300mm carbon steel epoxy painted weir sluice gate, sealed with Neoprene gaskets, equipped with sliding wheels and operating control consisting of a pair of threaded operating rods driven by reducers, couplings and supports with connection shaft and electromechanical actuator AUMA
• Supply, transport and installation of No. 1 16780x1660mm carbon steel epoxy painted weir sluice gate, sealed with Neoprene gaskets, equipped with sliding wheels and operating control consisting of a pair of threaded operating rods driven by reducers, couplings and supports with connecting shaft and electromechanical actuator AUMA
• Supply, transport and installation of No. 1 8000x1650mm carbon steel epoxy painted weir sluice gate, sealed with Neoprene gaskets, equipped with sliding wheels and operating control consisting of a pair of threaded operating rods driven by reducers, couplings and supports with connection shaft and electromechanical actuator AUMA
• Supply, transport and installation of footbridge L 20500mm
• Engineering and CND on the supply

Supply and installation of pipeline head butterfly valves Povo and Brasa plants.

Main object of the work:

• Supply, transport, and installation of hydraulically operated butterfly valves of pipeline head DN900 PN1.5 and DN500 PN1.5
• Supply, transport and installation of DN900 and DN500 disassembly joints for butterfly valve
• Supply, transport and installation of No. 2 hydraulic release overspeed scoops
• Supply, transport and installation of No.2 hydraulic butterfly valve control units with hydraulic piping, brackets and oil for flushing and first filling
• Supply, transport and installation of No. 2 electrical control panels/management hydraulic power units butterfly valves
• Supply, transport and installation of lifting structure
• Engineering and CND on the supply

Rope ungripper for Fiumicino airport

Main object of the work:

• Supply, transport and installation of rope scourer including hydraulic handling unit and accessories. Comb width 1000 mm, comb ascent speed 19.5 m/min, comb travel speed 30 m/min, maximum capacity 200 kg
• Supply, transport and installation of monorail support structure of length 17 m
• Supply, transport and installation of shaped grid filtering
• Supply, transport and installation of control and control electrical panel, automatic differential level control system and festoon cable with position limit switch
• Engineering and CND on the supply

   

Sluice gates AISI 316L Piazza San Marco Venice

Main object of the work:

• Supply and installation of no.1 flat floodgate 900x900mm 2.5m H2O in AISI316L complete with gargoyle, sill and mechanism-holding beam, threaded operating rods and gearbox drive system and electromechanical actuator
• Supply and installation of no.1 flat sluice gate 1000x950mm 2.5m H2O in AISI316L complete with gargoyle, sill and mechanism-holding beam, threaded operating rods and gearbox drive system and electromechanical actuator
• Supply and installation of no.1 flat floodgate 900x800mm 2.5m H2O in AISI316L complete with gargoyle, sill and mechanism-holding beam, threaded operating rods and gearbox drive system and electromechanical actuator
• Supply and installation of No. 6 AISI 316L upstream and downstream panconing to the sluice gates with associated gargoyles
• Engineering and CND on the supply

Gates desanding chambers Central Tel

Main object of the work:

• Supply and installation of No.2 3000x4000mm 6m H2O sluice gates including No.2 gargoyles, sill and mechanism holders for sluice gates, threaded operating rods and gearbox drive system and electromechanical actuator
• Supply and installation of No. 2 access walkways to maneuvering floors
• Overhaul with supply and installation of maneuvering mechanisms for adaptation of No. 2 low desander gates
• Overhaul with supply and installation of maneuvering mechanisms for adaptation of 2 high desander gates
• Overhaul with supply and installation of maneuvering mechanism for adaptation of No. 1 side channel desander sluice gate
• Overhaul with supply and installation of maneuvering mechanism for adaptation of No. 1 sluice gate discharge desander
• Engineering and CND on the supply

Fibbiana expansion tank sluice gates

Main object of the work:

• Supply, transport and installation of 8 flat sluice gates 5000x2500mm H20 3m, bidirectional neoprene rubber seal with threaded screw actuation system, pair of reducers with connecting rod, couplings and supports, electromechanical actuator type AUMA
• Engineering and CND on the supply

Valvola a farfalla DN2200 PN8 C.le Barcis

Main object of the work:

Replacement of the GR1 turbine guard EW rotary valve with a DN2200 PN8 butterfly valve and for extended, supply, transport and installation of

• No.1 double-flanged butterfly valve DN2200 PN8
• No.1 locking system with single-acting servomotor operation, lever and counterweight
• Series of No. 3 limit switches for AP/CH valve and intermediate
• No.1 connecting socket between three-flange venturi meter joint and butterfly valve covering the residual gauge
• No.1 DN250 balancing filling by-pass with manual and automatic gate valve
• No.1 DN250 PN10 pipeline emptying gate valve
• Pipeline fastening hardware
• Pullers and plates
• No.1 set of normal and special assembly equipment
• No.1 duct bottom with related hardware
• Engineering and CND on the supply

Adjustment of hydraulic organs Gammauta Dam

Main object of the work:

• Modification of the 8500x4730mm sector sluice gates of the surface outlet such that they could be opened and closed by operation of hydraulic servomotors powered by a hydraulic power unit equipped with an accumulation block with a manually operated hand pump. The servomotors were placed inside the side wells in order to allow smooth movement of the sluice gate by action on the ropes. The sluice gates were cleaned, the pulleys were checked and repainted, and the mechanical connection systems between rope and sluice gates and between rope and the cylinders themselves were replaced. Welding repairs were carried out on the tops where they had deteriorated with subsequent machining including modification/adaptation of the sill and overhaul of the pivot supports with disassembly of the pins, supply of ball joints for DN240 pin, machining of the pin to reduce it to 240 mm, machining of the outer supports, machining of rings and machining of front ball joints. Finally, they were supplied and installed with corresponding adversarial testing:
• Level control system (level transducers, position transducers)
• Controller cabinet, sub-distribution board with cables and electrical connections
• New control units for surface sluice gates
• New control servomotors for the sluice gates with associated piping
• Engineering, level adjustment software development and CND on the supply

Conical Inlet and Turbine Seat

Supply of the following components, welded, machined and painted according to Customer’s drawings and specifications:

• No.4 Turbine housing socket, Ø 5300 height 220 mm
• No.4 Director blade handling ring, Ø 4690 / 2820 x 1610 mm
• No.4 Internal sealing ring, Ø 2053 / 990 x 615 mm
• No.4 Exhaust ring, Ø 3405 / 2780 x 2183 mm

Domed Bottom Caseback

Provision of a specially made domed bottom to temporarily close the bottom outlet of La Stua Dam, allowing maintenance of electromechanical works downstream.
Divers were supported and guided in the installation of the bottom and associated gargame placed at -19 meters ( -24 msw) below the reservoir level.

Supply of the following components:

• No.1 Pseudo-elliptical curved bottom bottom bottomed S275J0 equipped with lifting hook, DN300 flange for by-pass gate valve and air vent pipe
• No.1 Counterframe made of steel S355J0
• No.1 Cast iron flat-body DN300 PN10 gate valve

Cyclo-pedestrian walkway

Supply of a metal pedestrian-cycling footbridge, made from S235 steel profiles, and metal parapets made from S275 steel profiles. Main features:

• Length 42 m
• Width 3.64 m
• Height 2.75 m
• Weight (excluding paving) approx. 30,000 kg

Fixed and self-propelled screening machine

Supply and installation of a fixed and a self-propelled scouring machine.

Fixed comb screen with grating

Fixed comb screen with grating built, tested and installed by CAMU in Italy.
Hydraulic movement.
Automatic conveyor belt for recovering and depositing the screened material in skips.
Electric control panel and automation with ultrasonic level differential.

Automatic cable breaker

Self-propelled rope crusher with hydraulic closing bucket.

Overhaul of sluice gates

Replacement of 4 sluice gates, dimensions 23×3.5 m.

Counter and Watertight Door

Supply and installation of: N.1 Bench for turbine discharge tank

• Net height: 1500 mm
• Net width: 3500 mm
• Seal: four-sided

Maximum hydrostatic load: 2000 mm N.1 Bridge for dissipating valve discharge tank

• Net height: 1500 mm
• Net width: 1900 mm
• Seal: four-sided

Maximum hydrostatic load: 2000 mm N.1 Watertight door for new access shaft

• Net height: 1250 mm
• Net width: 800 mm
• Maximum hydrostatic load: 68 m

No. 4 benches 7.3 m x 1.5 m each

Design, construction and installation of 4 stackable 7.3 m x 1.5 m benches each.
The entire project was carried out with a full dock and therefore surveying, installation and testing were performed by OTS underwater technicians.

Hydroelectric power plant 250 kW, Navigliaccio 2

Supply and installation of the electromechanical works of the hydroelectric plant as follows:

Turbines

• N.1 Two-stage 250 kW Kaplan turbine complete with asynchronous alternator

Electromechanical equipment

• N.1 DN1400 PN6 butterfly valve
• N.1 Hydraulic floodgate
• N.1 Inlet grid
• N.2 Upstream benches
• N.1 12 m fan-assisted floodgate

55 kW auger

Supply and installation of an auger for power generation with the following characteristic data:

Auger diameter: 3.0 m
Total length: 7.2 m
Generator power: 55kW

60 kW auger plant

Supply and installation of a power generation screw with the following characteristic data:

Nominal flow rate 1.0 m^3/s
Skip: 7.88 m
Auger diameter: 1.80 m
Total length: 16.9 m
Generator power: 60kW

With the following accessories:
Hydraulic machine gate
Safety flap gate with counterweight
Grille
Hydraulic control unit

Butterfly Valve DN 1400 PN 6

Supply of 1 butterfly valve DN 1400 PN 6 in electrowelded steel painted with epoxy cycle with double eccentricity lens and elastomer seal. The supply also includes the 3-flange disassembly joint.

Operation is by means of an hydraulic servomotor acting on one of the pins, while closing is by means of a counterweight.

Main features:
Nominal diameter 1400 mm
Closing angle 90
Nominal pressure 6 bar
Test pressure according to UNI EN 12266-1 standards

Bill of materials:
Valve body: S355J2
Valve lens: Monolithic steel S355J2
Valve pins: AISI 420 hardened steel
Bushings: Self-lubricating material Fibre-reinforced TENMAT FEROFORM T814
Seal seat surfaces: AISI 304

Butterfly Valve DN 1200 PN 4.2

Supply of the following components: N.1 Butterfly valve DN 1200 PN 4.2 in electrowelded steel painted with epoxy cycle with double eccentricity lens and elastomer seal. 

The supply also includes the 3-flange disassembly joint.

N.1 Body with lens with counterweight closure
N.1 Stainless steel by-pass
N.1 Overspeed palm with stainless steel body DN150 PN6
N.1 Hydraulic control unit
N.1 Electric panel Main features

Upstream flange internal diameter: 1300 mm
Maximum hydrostatic load on valve: 32 m
Shutter diameter: 1200 mm
Downstream flange internal diameter: 1200 mm Valve body and side cover: S355J2
Valve lens: S355J0
Valve pins (idler shaft and motor): AISI 420 hardened and tempered steel
Bushings: self-lubricating fibre-reinforced TENMAT FEROFORM T814
Seal seat surfaces: AISI 304

Butterfly Valve DN900

Supply and installation Butterfly valve DN900.