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INTRODUCTION

Steel Industry Over View:

Steel is the backbone of any industrial infrastructural development. Its demand and

consumption move in tandem with industrial expansion tiding economic growth. Steel is the

most widely used metal in the whole World. It is a versatile commodity which forms the core

constituent of all major economies. As a result, Steel consumption is a derivative of the growth

pattern of its various end-user sectors, i.e., manufacturing, housing, infrastructure, automobile

etc.

About JSW Group:

JSW Group is one of the fastest growing business conglomerates with a strong

presence in the core economic sector. This Sajjan Jindal led enterprise has grown from a steel

rolling mill in 1982 to a multi business conglomerate worth Rs. 14700 Crore (US $ 3.7

billion).

As part of the US $ 10 billion O. P. Jindal Group, JSW Group has diversified interests

in Steel, Energy, Minerals and Mining, Aluminium, Infrastructure and Logistic, Cement and

Information Technology.

JSW Steel Limited is engaged primarily in manufacture of flat products viz. H R

Coils, CR Coils, Galvanized products, auto grade / white goods grade CRCA Steel and

Power. JSW Steel Limited has the largest galvanizing production capacity in the country and

is the largest exporter of galvanized products with presence in over 74 countries across five

continents.

On its road to growth and expansion, the Group is also conscious about its

responsibility towards environment and social development. Eco-efficiency is a matter of

principle. Preventive measures for damage to the environment are taken into account at the

planning stage of production and growth. JSW Foundation, an integral part of the Group, is

the CSR wing, with a vision to create socio economic difference in the fields of Education,

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Health and Sports, Community Relationship/Propagation as well as Art, Culture and

Heritage.

Group of Companies:

• JSW Steel Limited,

• JSW Energy Limited

• JSW Holdings Limited,

• JSW Infrastructure and Logistics Limited,

• Vijaynagar Minerals Pvt Ltd,

• Jindal Praxair Oxygen Co. Ltd,

• JSoft Solutions Limited.

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JSW SALEM WORKS About Salem Works:

JSW Steel group acquired the Company and took over the Management from

November 2004. Salem Works is the only integrated steel plant in Tamil Nadu and is located

at Pottaneri / M. Kalipatti villages and at about 35 kms from Salem. As part of the JSW Steel

group, the plant underwent a dramatic transformation and started making profits from the first

year onwards. A fast paced expansion plan has been drawn for the company to quickly

become the first 1 MTPA integrated steel plant in Tamil Nadu.

The plant is having facilities for production of Pig Iron, Steel, Billet and Rolled Steel

products in the long product category. The present capacity is being expanded to one million

tons per annum. It has adopted the Sinter plant – Blast furnace – Energy Optimizing Furnace

– Ladle Furnace, Vacuum Degassing Continuous Casting Machine – bar and rod mill route

with iron ore as the basic input material. It also has plants for generation of power and

production of oxygen.

Salem Works is highly environment conscious and the process and technology is

designed for reusing and recycling the process waste. We have an expanding green belt to

provide a green environment.

Products of Salem Works have the hallmark of quality and combined with

competitive pricing, they are highly preferred in automobile and construction sectors.

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Steel Making Process:

Coke Oven:

Coke is produced when coal is heated to drive off volatile matter contained within.

Coal is indirectly heated in coke ovens by burning coke-oven off gas in heating flues in the

coke oven’s side walls. An oxygen measurement is used to maintain the fuel / air ratio

efficiency of the combustion in the heating flues. A 10% increase in excess air changes fuel

usage by 1%.

A gas chromatograph is used to measure the composition and BTU content of the

coke oven gas. Coke gas is a good fuel that can be utilized in various combustion processes.

The BTU value is used for oven burner control and for custody transfer accounting when the

coke gas is sold to other locations.

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Blast Furnace:

The blast furnace is used to make pig iron from iron ore. An aggregate of iron ore,

coke, limestone, sinter and fluxes are charged into the top of the furnace while preheated air

is blasted into nozzles (tuyeres) at the bottom. The air reacts with the coke to make CO and

tremendous heat that purifies and melts the aggregate charge. The molten iron collects in the

bottom of the furnace. The exhaust gas (top gas) is captured, cleaned and used for fuel in

other areas of the plant.

The oxygen measurement on the blast furnace ensures an adequate air flow rate

through the tuyeres to maintain the process melt temperature and also for safety purposes to

prevent hazardous conditions.

A gas chromatograph is used to analyze the blast furnace top gas composition. The air

/ coke reaction results in a complex exhaust gas stream of CO, N2, H2 and CO2. The CO

concentration is a key measurement to determine the process efficiency.

A water cooling system is imbedded within the blast furnace walls to help keep the

infrastructure cool during operation. Multiple water lines, typically 2” in size, are run through

the column. The cooling water can contain scale, silt, sand, etc., which makes a magnetic

flow meter the perfect choice to measure the cooling water flow rates. Inlet and outlet flow

rates are measured to check for cooling system leaks.

Hot Blast Furnace:

Blast furnace top gas has considerable energy value. It is burned in stoves that preheat

the air for the hot blast into the blast furnace tuyeres. Any top gas not used is sent to the

boiler house for use generating steam for various purposes. In both instances an oxygen

measurement is used to improve fuel efficiency, lower emissions and for verification of safe

process conditions.

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Basic Oxygen Furnaces (BOF) and Electric Arch Furnaces (EAF):

Pig iron, fluxes and scrap are reacted with pure oxygen to create steel. Carbon in the

molten metal charge reacts with CO2 to form CO which is either burned in the process or off

gassed to a pollution control system. Top gas from a BOF or EAF is similar to that of a BF.

Reheat Furnaces:

Intermediate steel products such as slabs or billets are rolled to shape in a steel mill.

The steel is heated in a reheat furnace to soften the steel for the rolling process. Natural gas or

fuel oil burners create heat along the furnace length.

Oxygen concentration is measured at different locations within the furnace length to

determine combustion efficiency, control process oxidation conditions and to help reduce

furnace NOx emissions.

Products:

Hot Rolled products: HR Coil, HR plate and sheet, HRPO, HRSPO

HR Coil HR Plates and Sheets

Applications: Automobile, Boiler and Pressure Vessels, Ship Building, Railways,

Transmission Towers, Oil and Petro Chemicals, Marine Containers, Coal and Mining General

and Heavy Engineering.

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Cold Rolled Products: CR coil and Sheet

CR coil and Sheet

Applications: Automobile, White good, Cold rolled formed section, General engineering &

fabrication, Packing, Drums/ barrels, Furniture.

Galvanized Product: Galvanized Corrugated Sheet, GP Sheet and Coil

Galvanized Corrugated Sheet GP Sheet and Coil

Applications: Automobile, Boiler and Pressure Vessels, Ship Building, Railways,

Transmission Towers, Oil and Petrochemicals, Marine Containers, Coal and Mining, General

and Heavy Engineering.

Pre-Painted Galvanized Product: PPGI coil, PPGI sheet, PPGI profile

PPGI coil PPGI profile PPGI sheet

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Application: Roof, Wall cladding and other building products, Household appliances,

Furniture, Automotives.

Jindal Vishwas GC Sheets

It is the roof that has to take the brunt of nature's extremities during its entire life and

hence utmost care must be taken in selection of the right roofing material. Wrong choice of

roofing and cladding can create losses in terms of human lives and material in cases of

natural disasters. A good reliable roof with least number of complications gives peace of

mind to meet these challenging needs of the customers, JSW offers superior quality

Galvanized Corrugated sheets under the brand name "Jindal Vishwas".

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COKE OVEN PLANT

• The coke which is brought from Australia is of four types that are used in this plant.

• By using M40 conveyor, the four types of coal is sending to the four separate bunkers.

• The four types of coals are mixed together in the M70 conveyor with its separate mixing

range.

• The M70 conveyor sends the coal to the hammer mill.

• In the hammer mill the coal size are reduced less than 3.35cm.

• Only less than 10% of coal is present in 3.35cm.

Manufacturing Activities:

Manufacturing activities in the existing plant include various processes as a part of

manufacturing of Low Ash Metallurgical Coke. The activities shall also include operation of

various utilities.

Low Ash Metallurgical Coke (Existing): Selection of Technology

There are two basic processes available for manufacturing of metallurgical coke, the

byproduct recovery process (BP) and the non-recovery process. A by-product recovery type

of coke oven plant is proven. In addition to production of coke, a stream of gases containing

chemicals of commercial value is also produced. Traditionally these chemicals are separated

as by-products and sold. However, many of the chemicals and the equipment required for

Production of byproducts from gases are noted for their deleterious health and environmental

effects. Pollution abatement in a complex based on by-product recovery ovens has become a

costly proposition and keeping in view the growing pollution regulation in India, it is likely to

become economically unviable in the future.

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The second option is non-recovery type of ovens. In recent years there has been a

renewal of interest in this well-established technology for coke making, using sole heated non

– recovery type coke ovens with modern oven machines. The same is being utilized

successfully for coke production by Gujarat NRE group for last several years and meets the

standards best available in the world in this category in terms of quality, quantity & yield.

Non-recovery coke oven technology has been commercially proven in large scale

installations in USA, China and Japan and has been recommended by the AISI as a viable

alternate to recovery type technology. Central Pollution Control Board (CPCB) has also

recommended adopting non recovery ovens as a pollution control measure. EPA considers

non recovery coke making technology as the Maximum Achievable Control Technology

(MACT).

Comparison of by product recovery and Non recovery Technologies

Byproduct recovery coke ovens Non recovery coke ovens

By products recovered : (Gas, Tar, Ammonia, Naphthalene, Benzol)

No recovery of byproducts. Complete combustion carried out with excess air.

Pollution norms met with necessary measures Inbuilt advantage of no pollution due to negative pressure in the oven.

Closely sized product & hence low Crushing Lumpy Coke & hence high degree of crushing.

Specific Coal blend Wider coal blend & inferior coals can be used.

Lower flexibility of operation High Flexibility

Long construction time Short construction time

Refractory Bricks of complex shapes Refractory Bricks of simple shapes.

The company proposes to use “Non Recovery” coke making technology due to following

reasons:

• This type of coke oven has a large coking volume and it is clean in production, which

represents advanced trend of the international coking technology.

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• To have a limited capital outlay. The investment is low and the construction period is

short. According to the present market situation, the investment is about 40 % of that

for traditional Byproduct Recovery coke ovens of the same capacity and the

construction period is 8-10 months.

• The technology has provision to recover waste heat and produce steam which could

be utilized for power generation in future.

• Power consumption is low and the production process is simple. The production

process does not require any steam and cooling water.

• The technology has the flexibility to blend clean coal with the hard imported coking

coal, & proposes to blend upto 30% of soft coking coal, which will maintain the

quality as well as give the cost advantage.

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PROCESS IN COKE OVEN PLANT

• The conveyors M130 & M140 sends the mixed coal to the stamping station.

• There are two bunkers in the stamping station that is used to store the coal which to be

quenched.

• The small size of motors used to open the lid of the bunkers.

• The second quenching station is bought the coal from M131 & M141 conveyors.

Raw Material:

Different types of raw material are used in this process. Raw material control is the

most important thing for high productivity and low fuel rate. The raw materials used are:

• Iron Ore

• Coke

• Lime stone

• Quartz

• Dunite

• Sinter

• Oil let

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The four types of coal using this process are:

• Primary coal

• Semi hard coal

• Semi soft coal

• Hard coal

Probably this coal mix contains:

• 66% of carbon

• 23-24% of voluntail material

• 10% of noise

• For ramming (or) quenching operation electrical motor are used.

• The motor speed is control by using L type gear box.

• These electrical motors used to lift 6 slots each on both side.

• The ramming operations are done only as per the own weight of the slots.

• Each 3 slots are mechanically coupled with the motor.

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• The coal box sizes are:

22m length

3.5m breadth

1m height

• After finishing the quenching process the coal box will contain 50 to 55 tons

of coal.

• The coal box moves to the moving car.

• Then the coal sends to the oven.

• The oven contains the coal 65 to 68 hours with the temperature of 1100ºC to 1350ºC.

• The oven is made up of silica bricks that withstands around a high temperature above

1500ºC.

• The R type thermocouple is used to measure the inner temperature of the oven.

• Platinum are the metals which are used in the R type thermocouple which is used to

measure this high temperature.

• After 68 hrs the following reactions will take place

• 86% of carbon.

• Non-volatile material reduced to 5%-6%.

• At the same time the weight of coke is also reduced to 35-38 tons.

• This type coke is used to melt the raw material of steel.

• No external energy is supplied to the coke oven.

• For combustion outer air from atmosphere is consumed.

• The burning gas is used to produce the electric power in the power plant.

Coal handling and preparation facilities:

Design basis

The coal handling system is designed for receipt of imported coal through road

transport, unloading, storage, reclaiming, crushing and conveying to coal bunker of the coke

ovens. The coal handling plant will operate 365 days in a year on three- shift per day basis.

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Coal reclaiming and preparation:

Coal from the storage yard will be reclaimed by pay loaders and fed to the Coal

bunkers by belt conveyors. Coal from the coal bunkers will be fed to the hammer crushers by

Electronic belt weigh scales. Coal will be crushed to 85% below 3.0 mm in hammer crushers.

Suspended electromagnet will be installed before the crusher to separate tramp iron in

coal. Coal after crushing, will pass though mixer and will be conveyed to coal towers through

a system of conveyors.

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COKE OVEN BATTERY

Coke Oven Battery:

Design Basis

Non recovery type coke ovens have been considered for the proposed Coke Plant.

Eight batteries of 20 ovens each will be required to produce 248,000 tons per year gross coke.

Cross Section of typical Coke Oven Battery

Major units of coke oven battery

• Coke oven battery

• Total number of ovens

• Coal tower

• Stamp-charging & Coke Pushing Machine

• Coke receiving and quenching car

• Quenching tower

• Chimney of height 34 Meter

• All the eight batteries will be in operation.

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Coke handling facilities:

Design basis

Coke handling and screening facilities will segregate coke into following sizes:

• Foundry coke >75 mm

• B.F. coke 25 – 75 mm

• Nut coke 15 – 25 mm

• Pearl coke 6 – 15 mm

• Coke breeze 0 – 6 mm

The coke handling plant will operate for 365 days in a year, 3 shifts per day basis.

Quenched coke will be conveyed to coke crusher house. Oversize coke (+75mm) will be

crushed in double roll coke cutter after separation in primary screen. After size reduction, the

total coke will be screened in the secondary screen for separation of BF coke. BF coke will be

transferred to the coke storage yard. The small size coke (-25 mm) will be screened to

separate different size fractions and transported to coke storage. For reclaiming and loading

into road transport, pay loaders and truck loading facilities will be provided.

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Manufacturing Process:

Coal Preparation:

Three to four coal-receiving hopper, are provided in the coal storage yard. These

hoppers are fed by coal with front end loaders, and conveyed to coal bunkers through a

system of conveyors. Reversible hammer crushers will crush the coal to 90 % through -3mm

size. The crushed coal will pass through mixer and then conveyed through belt conveyors to

the coal tower for coking.

Coking:

The coal blend from the coal preparation section is delivered to coal tower under

which the stamping section is arranged. Coal cake is stamped in layers. The stamp charging

& pushing machine transport the coal cake to the oven where the coke is ready for pushing.

Coke pushing car pushes the coke into the carbonization chamber and immediately closes the

coke side door. The coal cake is pushed into the carbonization chamber and the baffle at the

coal cake end is locked on the oven door. The pushing car draws the peeler plate out and

immediately closes the charging side door.

When the carbonization is complete, the pusher car will push the red hot coke onto the

quenching car. The red-hot coke in the quenching car will be quenched in the quenching

station by water spray. Then the coke will be discharged into a ground hopper. The

quenching station will be provided with pumps and settling tank for re-circulation of

quenched water. Make-up water will be supplied to the settling tank to compensate

evaporation losses. The settling tank will be regularly cleaned by mechanized grab bucket.

Coke Screening:

After cooling the coke is sent to coke screening and crushing plant. The coke is

segregated through a set of coke cutters and screens into various grades as per the marketing

requirement.

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PROCESS BLOCK DIAGRAM OF LOW ASH METALLURGICAL COKE

TYPICAL SPECIFICATION OF AUSTRALIAN PRIME COKING COAL

Typical technical specification of Australian

prime coking coal is as follows:

a)

i. Size ii. Fractions below 0.5 mm

b) Total moisture (on as – received’ basis) c) Proximate analysis (on as received basis)

i. Volatile matter (dry basis)

0 – 50 mm 25% 8% maximum 24 26%

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ii. Ash (dry) iii. Inherent moisture

iv) Fixed carbon d)

i. Phosphorus ii. Sulphur

9 – 10% maximum 1.5% maximum By difference 0.06% maximum 0.6–0.8% maximum

QUALITY OF COKE

The typical quality of B.F. coke to be produced in the plant is given below: -

Ash Moisture Sulphur Phosphorus Volatile Carbon M10 M40 CSR CRI

8-10% 4% <0.7% <0.03% 1%(Max) Balance <7.0% >80% +65 23.05-26.0

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HEAT RECOVERY COKE PLANT

The heat recovery coke plant will be arranged in three batteries – one with 20 ovens

and two with 40 ovens each. At design capacity, the facility will carbonize 910,000 tons/year

of coal and produce up to 614,000 tons/year of furnace coke. In coke production from heat

recovery and byproduct ovens, the volatile fraction of the coal is driven off in a reducing

atmosphere. Coke is essentially the remaining carbon and ash. With byproduct ovens, the

volatiles and combustion products are collected downstream of the oven chamber and refined

in a chemical plant to produce coke oven gas and other products such as tar, ammonia, and

light oils. In heat recovery ovens, all the coal volatiles are oxidized within the ovens.

Each technology has its own set of design objectives that affect its emissions. Both

types of ovens are typically constructed of refractory brick shapes and other materials that,

with day-to-day operation, can form small cracks in the refractory and around the removable

parts.

Byproduct ovens are kept at a positive pressure to avoid oxidizing recoverable

products and overheating the ovens. Heat recovery ovens are kept at a negative pressure,

adding air from the outside to oxidize volatile matter and release the heat of combustion

within the oven system. The opposite operating pressure condition and combustion within the

oven system are important design differences between heat recovery ovens and byproduct

ovens. Small openings or cracks in byproduct ovens allow raw coke oven gas (and hazardous

pollutants) to leak into the atmosphere. The openings or cracks in the heat recovery ovens

simply allow additional air to be drawn into the oven.

The SunCoke heat recovery Oven Diagram shows a cut-away drawing of a heat

recovery oven. Coal is charged onto the oven floor at the beginning of the cycle. Heat from

the hot refractory starts the carbonization cycle. Air is first introduced into the oven crown.

Partially combusted gases pass into a sole flue system beneath the oven floor where

essentially all combustion is completed. The gases then pass into an afterburner tunnel where

any remaining uncombusted gases are oxidized. The afterburner tunnel system routes the hot

gases to the HRSGs.

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Coal will come into the facility by rail. A thaw shed will be installed that can heat the

coal cars, as needed, using electric heaters. Coal will be stored in open piles equipped with

watering systems to minimize emissions. Emissions from material transfer will be controlled

by enclosures except in a few areas where the potential to overheat coal or interfere with

dispersion of steam from coke may pose a safety hazard. A traveling hood/baghouse system

on the pushing/charging machine will control charging emissions that escape the ovens.

HRSGs will recover heat from the oven waste gases and protect the downstream pollution

control devices.

Particulate matter (PM) and sulfur dioxide (SO2) will be removed from the oven

gases in a lime spray dryer/baghouse system. A mobile flat hot push car with multicyclone

will capture pushing emissions. Quenching will be performed in a conventional quench tower

with baffles. Quenching emissions will be controlled by using water with total dissolved

solids (TDS) levels less than or equal to 1,100 mg/L for quenching and by a unique baffle

design. A baghouse will control emissions from the coke screening and crushing facilities.

Coke will normally be transferred directly to AK by conveyor, but a system to allow coke to

be loaded into rail cars will be installed. Provisions will be made to store a run of oven coke,

screened coke, and coke breeze in open coke piles under emergency situations. Plant roads

will be paved to control PM.

The individual waste heat stacks will be used during annual inspection and

maintenance of each HRSG so that these procedures can be performed safely. The maximum

time that will be required for maintenance and inspection of each HRSG is 10 days/year. The

planned outages will be scheduled so that the HRSGs are brought down one at a time for

maintenance and inspection. During the scheduled maintenance, 20 ovens will vent waste

gases directly into the atmosphere, bypassing the flue gas desulfurization (FGD)/fabric filter

system. These gases will still pass through the common tunnel afterburner system, which will

fully combust the gases prior to release into the atmosphere. The remaining 80 ovens will

continue to pass through the spray dryer/baghouse. On an annual basis, 96% of the waste

gases from the ovens will pass through the spray dryer/baghouse.

The spray dryer/baghouse will be designed so that much of the routine inspection and

maintenance can be performed while the system is operating. For example, the rotary

atomizers can be exchanged during operation, and external components such as hopper

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heaters, level detectors, and the filter bag cleaning system can all be inspected and replaced

during normal operation. The baghouse will have extra compartments so that some can be

offline during operation, allowing filter bags and cages to be inspected and replaced when

necessary. In addition, there will be three fans so that there will be a spare as well as one

offline for inspection and maintenance.

The proposed supplier of this equipment (Hamon Research-Cottrell) recommends an

annual internal inspection for spray dryer/baghouse installations for their operating units.

Quick inspections are also needed during unexpected plant forced outages. Recognizing the

more challenging service for a heat recovery coking facility, they recommend an aggressive

preventive maintenance program for optimum performance that will promote the maximum

effective service life of all components. As such, MCC proposes 5 days/year for

inspection/maintenance of the spray dryer/baghouse. This work will be performed using good

work practices and scheduling the work to be performed in the shortest possible time. The

five waste heat stacks will be open during these 5 days so that the work can be performed

safely and the ovens will remain hot and the oven pressures will remain negative.

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WASTE HEAT RECOVERY BOILER

• It is used to produce the electric energy in the power plant.

• Each chimney is connected to a bunch of 48 ovens.

• In oven it exist a positive pressure and on the other end negative pressure is produced,

so the hot gas flows from oven to chimney.

• This hot gas is send to the WHR boiler for producing power.

• After this carbonisation process takes place by sending the coke to the cooling tower.

• The coke is cooled over to a period of six minutes with an interval of three minutes.

• The coke is send to the warp area after the cooling process.

• Below the warp area there is a single deck screen which allows coke of size below

83cm.

• Above 83cm coke is crushed through coke cutter and send to CBC conveyor.

• Then the remaining coal is send to J40 conveyor.

• From J40 conveyor it is send to double deck screen.

• In double deck screen coke is separated using coke cutter.

• The separated coke is the size of order 28cm & 12cm.

• 28cm coke is called nut coke.

• 12cm coke is called breeze coke or fine coke.

• SPRING MECHANISM – In each oven to withstand refractory.

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Conveyors:

Conveyors are the rotating material used for charging the material to furnace and ladle.

Conveyors Used In Coke Oven Plant:

• M30

• M40

• M70

• M130

• M140

• M131

• M141

Parts of a Conveyor:

• Head pulley

• Snub pulley

• Deflector roller

• Tail pulley

• Carrying rollers

• Bend pulley

• Take-up pulley

Bar and Rod Mill:

• 10 Strand wire rod block with steel more cooling, compactor etc.,

• Cooling bed extension by 20 Metres with civil work

• Blooming Mill

Power Plant:

• Power Plant - 1 - 30MW Coal base

• Power Plant - 2 - 30MW Gas base

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PROGRAMMABLE LOGIC CONTROLLER

Definition:

Programmable Logic Controller’s (PLC) are used in virtually every segment of

industry where automation is required. They represent one of the faster growing segments of

the electronic industry.

A programmable logic controller (PLC) is a solid – state device designed to perform

logic functions.

PLC’s are used for the control and operation of manufacturing process equipment and

machinery.

Parts of PLC:

A PLC can be divided into three parts. They are:

• The Central Processing Unit,

• The Input / Output Section,

• The Programming Device.

The CPU is the brain of the system. The CPU is a microprocessor based system that

replaces control relays, counters, timers and sequencers. It is designed so that the user can

enter the desired circuit in relay ladder logic. The CPU accepts input data from memory and

sends appropriated output commands to control devices.

A direct current (DC) power source is required depending upon the PLC’s

manufacturers. This DC power supply can be housed in the CPU unit or may be separately

mounted unit.

The input / output section consist of input modules and output modules. Input devices

such as push button, limit switches, sensor, selector switches, and thumb wheel switches are

hard – wined to terminals on the input modules. Output devices such as small motors, motor

status, solenoid valves, and indicator lights are hard – wined to terminals on the output

modules.

The programming device, or terminals, is used to enter the desire program into the

memory of the processor. This program is entered using relay ladder logic. The program

determines the sequence of operation and ultimate control of the equipment or machinery.

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The programming device must be connected to the controller only when entering or

monitoring the program.

PLC USED IN COKE OVEN PLANT: ALLEN-BRADLEY - PLC-5

For decades the PLC-5 system was the most popular of the Allen-Bradley PLC lines.

Because it was so reliable and versatile, the PLC-5 has survived the test of time.

Qualitrol International provides remanufactured and hard-to-find replacement parts

for the Allen-Bradley PLC-5 family.

Remanufactured PLC-5 parts are a cost-effective alternative to new PLC-5 Parts.

Whether you need 1771 I/O modules, Processors, or Power Supplies and Racks,

Qualitrol has the PLC-5 parts needed to keep your system running for years to come.

Each of our remanufactured PLC-5 parts comes with our exclusive 2-year warranty -

learn more about our quality remanufacturing process in our section.

INPUT MODULE

CENTRAL PROCESSING UNIT (CPU)

OUTPUT MODULE

PROGRAMMING DEVICE Output Module:

• Small Motors • Starters • Indicator Lights

Input Module:

• Push Button • Limit Switches • Sensors

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CONCLUSION

• JSW is India’s largest private steel maker. This allows JSW to the economies of scale

in production and better bargaining power with respect to suppliers and customers.

• JSW steel is located in a fast growing country like India where the per-capita steel

consumption is still low but this means huge potential for growth.

• JSW steel has access to top talent from the country.

• As part of the JSW group, the plant underwent a dramatic transformation and started

making profits from the first year onwards. Today, it has become the first 1 MTPA

integrated steel plant in Tamil Nadu.

• Salem Works is highly environment conscious and the process and technology is

designed for reusing and recycling the process waste. We have an expanding green

belt to provide a green environment.

• Products of Salem Works have the hallmark of quality and combined with

competitive pricing, they are highly preferred in automobile and construction sectors.

• This inplant training at JSW Steel, Salem Works helps us to enhance our knowledge

about the production of steel and manufacturing of coke in the coke oven plant.