power lines “automated” fixed washing … rigid piping system installation from the tower base...

POWER LINES “AUTOMATED” FIXED WASHING SYSTEM Insulators washing on Energized O.H.T/L & Substations, design, fabrication, installation/supervision services

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ISO 9001 : 2015 BUREAU VERITAS CERTIFICATION NO. CH10196772

TRANSMISSION LINES NETWORK“AUTOMATED” FIXED WASHING

(INSTALLATION ON EXISTING AND NEW OHTL)

Water rigid piping system installation from the towerbase up to the top insulators elevation.

Piping system divides into branches at each insulatorslevel.

Stainless steel female quick coupler fixed inside acoupling box at the tower base, connecting to thewater Pumper truck high pressure flexible hose.

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Simultaneous wash of all insulators of onestandard Suspension/Tension towers and Gantriesand suitable structures.

The water envelopes and swamps all energizedinsulators in one surge.

In calm wind conditions, one washing cycleduration approx. 25 Seconds. Refer to washingefficiency rate paragraph

Washing equipment outline:

Pumper trucks: to carry Motor-pump units nearthe towers base; the Motor-pump pick up waterfrom Tanker trucks, connecting the water outlet tothe coupling box installed at tower base.

Tankers trucks: with demineralized water, to carrythe wash water near the tower base.

BRIEF WASHING SYSTEM DESCRIPTION

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TRANSMISSION LINES NETWORK“AUTOMATED” FIXED WASHING SYSTEM


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Rigid Piping System installation on existing overhead transmission lattice towersand tubular steel poles, without power outages.

Piping sizes, water flow capacity and pressure parameters are determined by theInsulator’s types and characteristics and towers/gantries/steel poles height.

Suitable spraying nozzles are installed on the piping system at required elevation.Nozzle quantity depending on the insulator’s types.

ENERGIZED INSULATORS - FIXED WASHING SYSTEM OUTLINE

Washing water:

For washing insulators on energized overhead transmission line networks from132 kV up to 600 KV with water pressure ranging from 2750 and 7000 kPa (400 to1000 PSI) at the pump outlet, demineralized water with minimum permissibleconductivity not to exceed 20 µS/cm (micro Siemens per cm) for 400 kV O.H.T/Land 50 µS/cm (micro Siemens per cm) for 300/132 kV O.H.T/L. is required.

For washing insulators on energized overhead transmission line networks of 33 kVwith medium/low-pressure water ranging from 1400/2100/ kPa (200/300 PSI) at thespray nozzles, demineralized water with minimum permissible conductivity not toexceed 200 µS/cm (micro Siemens per cm), is required.

Rigid Piping System shall be installed on each existing power lines structures.Fixed spray washing system design considers each type of towers/steel poles andgantries configuration (i.e.: Suspension, Tension, S/C, D/C, and kV)

Washing effectiveness may be limited by wind speed. No washing activities shall be

planned with wind speed above 25 Km/H. High washing rate is achieved with calm or

low speed wind conditions.

At the end of the each structure washing, the demineralized water remaining in the piping system will be recovered into the storage tank 3



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Prerequisites: optimum site condition, service and access roads along theoverhead transmission line, with calm wind conditions.

Operating nos. 4 Tanker trucks of suitable capacity and nos. 4 Pumpertrucks equipped with high-end motor-pump units.

• 400 … 132 kV Standard Suspension Towers Nos. 160 per day

WASHING EFFICIENCY – ON DAILY BASIS:

Operating nos. 4 Tankers trucks of suitable capacity and nos. 4 Pumperstrucks equipped with mid-size motor-pump units.

• 33 kV Standard Suspension Towers Nos. 200 per day

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High pressure Water Pumping Unit mounted on a suitable 4x4/6x4/6x6 off-road chassis/truck:

Motor-pump units: skid mounted triplex plunger pumps of suitable capacity and pressure, driven by diesel engine.

• High-end Motor-pump units, with suitable pump capacity and working pressure deployed to carry out a simultaneous washing of all insulators of one 132, 300 and 400 kV Standard Suspension tower.

• Mid-size Motor-pump units, with suitable pump capacity and working pressure deployed to carry out a simultaneous washing of all insulators of one 33 kV Standard Suspension tower.

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HIGH-END MOTOR PUMP UNITS:

Triplex Plunger Pumps Group:

Symmetrical power and design featuring Low-high pressure packing design with integrated cooling system. Forced lubrication by incorporated oil pump, complete withpressure gauge, pressure switch, oil/water intercooler, oil filter. Block style stainless steel manifold. Crankshaft bushings. Forged steel con-roads with antifriction bearings.

Crankshaft made of nitrated, hardened and tempered alloy steel. High resistance light alloy crankcase. Stainless steel manifold. Tapered roller rim bearings. Specialantifriction light alloy con rods. Solid ceramic plungers. Stainless steel valves.

Minimum capacity: 1800 Lt./min. (476 GPM)

Minimum Working pressure, at pump nozzle 50 Bar (700 PSI)

Diesel Engine:

Equipped with Engine Management System EMS, PDE unit injectors, turbocharger, fuel filter and extra pre-filter with water separator, Oil filter, full flow, Centrifugal oilcleaner, Oil cooler, integrated in block, Oil filler, in valve cover, Deep front oil sump, Oil dipstick, in block, Magnetic drain plug for oil draining, Starter, 1-pole 6.0 kW,Alternator, 1-pole 100A, Flywheel, SAE 14, Silumin flywheel housing, SAE 1 flange, Front-mounted engine brackets, EU Stage IIIA.

No. of Cylinders: 5 in-line, 4-Stroke, Displacement: 9.3 liters

Bore x stroke: 130x140 mm, Compression rate: 16:1

Minimum Power PRP-Prime power: kW 251

Control Panel:

Low oil pressure, Over-temperature, Minimum fuel level, Minimum water level alarm (Warning level)

Minimum water level alarm (Shutdown level), Air filter clogging, Low-level cooling liquid, Over speed, Under speed.

Constant conductivity monitor controller.

Display: Hour meter, Oil pressure gauge, Oil/Water temperature, Tachometer, Fuel level gauge, Alarm signals, Battery/oil light, Maintenance request, Emergency stop

WASHING EQUIPMENT TECHNICAL DATA AND GENERAL SPECIFICATIONS

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MID-SIZE MOTOR PUMP UNITS:

Triplex Plunger Pumps Group:

Symmetrical power and design featuring Low-high pressure packing design with integrated cooling system. Forced lubrication by incorporated oil pump, complete withpressure gauge, pressure switch, oil/water intercooler, oil filter. Block style stainless steel manifold. Crankshaft bushings. Forged steel con-roads with antifriction bearings.

Crankshaft made of nitrated, hardened and tempered alloy steel. High resistance light alloy crankcase. Stainless steel manifold. Tapered roller rim bearings. Specialantifriction light alloy con rods. Solid ceramic plungers. Stainless steel valves.

Minimum capacity: 900 Lt./min. (238 GPM)

Minimum Working pressure, at pump nozzle 50 Bar (700 PSI)

Diesel Engine:

Turbocharged, Nos. 4 Cycles, No. of Cylinders: 4 in-line

Displacement: 3.983 liters, Air cooled, Combustion: direct injection

Bore x stroke: 105x115 mm, Compression rate: 18:1

Power: kW 74.8 (102 HP)

Minimum Power kW 75 (102 HP)

Control Panel:

Low oil pressure, Over-temperature, Minimum fuel level,

Minimum water level alarm (Warning level) Minimum water level alarm (Shutdown level),

Air filter clogging, Low-level cooling liquid, Over speed, Under speed.

Constant conductivity monitor controller.

Display: Hour meter, Oil pressure gauge, Oil/Water temperature, Tachometer, Fuel level gauge, Alarm signals, Battery/oil light, Maintenance request, Emergency stop

WASHING EQUIPMENT TECHNICAL DATA AND GENERAL SPECIFICATIONS

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Tankers / Trailers:

Suitable to: carry 6000 and 20000 Lt. water storage tank capacity, operate in climatic and topographic, dusty atmospheric conditions, high ambient temperatures (55Degrees Celsius), uneven roads and continuous operations for long period.

Tanker’s engine:

Diesel engine water cooled, suitable to power the truck and attachment and can withstand sever load conditions and meet operational conditions. Heavy-duty cooling, fuel,

lubricating system, lube oil cooling system and air system to match with operating conditions.

Tanker’s accessories:

Tires, Radial, Tubeless, for on/off roads. Spare tire permanently attached to the truck. Rear stop/turn/tail signals, back up lamp and license plate bracket with light. Electric horn.

Rotating amber Beacon light. Air conditioning system, factory installed. Five (5) pounds dry chemical fire extinguisher secured inside cab. Two (25) pounds dry chemical

extinguishers secured behind the cab at the sides of the truck.

6x6 All-wheels-drive Pumper Trucks:

Payload capacity of 5000 Kg. to carry 1 High-end Motor-pump unit with accessories; payload capacity of 2500 Kg. to carry 1 Mid-size Motor-pump unit with accessories.

Water storage Tank:

Main equipment/accessories: quick opening manhole with lockable lid. Stainless steel access ladder to the manhole. External sight level gauge, level probes to monitor full, 1/2,

1/4, 25 centimeters and 15 centimeters (empty). Tank material grade: stainless steel AISI304L. Grounding system

Stainless steel connecting valve with quick coupling steel braided hose of required diameter and length, connecting the motor- pump unit installed on the Pumper truck.

Standard accessories:

• Steel braided hose of suitable diameter and length with stainless steel quick coupling to connect the Motor-pump to the Tanker water outlet,

• Steel braided hose of suitable diameter and length with stainless steel quick coupling to connect the pump to the coupling box installed at the tower base.

• Portable Conductivity/TDS/Salinity & Temperature tester for water analysis: measuring range: 1-10000 μS or ppm (0.0010-10.000 ppt salinity)

• High-pressure hose reels, electric rewind with quick disconnect fittings, with 60 meters hoses rated 2,000, complete with wash gun

• Grounding system

WASHING EQUIPMENT TECHNICAL DATA AND GENERAL

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Washing equipment complete with watertank, hose reels, Mid-size Motor-pumpunit, may be loaded onto any suitablechassis to service handheld spray nozzleswashing activities of energized insulatorsinstalled on transformers, small towers,

gantries, and in location with limitedaccess.

Skid Washer units may be loaded onchassis with aerial lift used for maintenanceactivities to wash energized insulators

installed in structures otherwise notreachable by Tankers and Pumpertrucks.

ENERGIZED INSULATORS – MOBILE WASHING EQUIPMENT

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power lines “automated” fixed washing … rigid piping system installation from the tower base...

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