Automated tank cleaning systems and heat exchanger services

btts.de

We specialise in automated tank

cleaning systems. Our comprehensive

know how and cutting-edge technology

ensure stringent safety standards are

always met

> Tank- and TurnaroundService

> INDUSTRIAL SERVICES

A strong group

BUCHEN Tank- and TurnaroundService – your specialist

for tank cleaning and turnaround services

BUCHEN Tank- and TurnaroundService GmbH is your one-

stop shop for tank services, tank cleaning and turnaround

management. Besides using a variety of automated tank

cleaning systems, we also offer our customers mobile wash-

ing areas and apparatus services.

The technology we use is not only highly efficient but also

extremely safe. As the name suggests, our modern non-man-

entry systems mean staff no longer need to enter the tanks;

all our automatic cleaning processes are closed systems.

Thanks to our qualified staff and innovative technology, we

are able to help our customers to preserve the value of their

equipment and ensure their tanks and industrial facilities

run smoothly.

BUCHEN – a partner for industrial services

across Europe

BUCHEN provides industrial and waste management

services that are setting new standards – both on its home

market and abroad. With approx. 2,700 employees working

at 70 different locations in Germany, Europe and the Middle

East, we offer our customers professional industrial services.

Our bespoke solutions enable our customers to focus on

their core business. Our staff regularly take part in training

and further training courses – held at our own accredited

training centre – to ensure they know all about the latest

developments in their field. BUCHEN has Europe-wide accred -

itation for its quality, health, safety and environmental

management systems. Moreover, we are continuously

optimising our processes and improving our technology to

further develop our comprehensive portfolio of services for

the chemical and petrochemical industry.

XERVON – a leader in technical services

Together, XERVON, BUCHEN and their subsidiaries and sister

companies make up the specialist 'industrial services' divi-

sion within the REMONDIS Group. Being one of the market

leaders for technical services, XERVON's portfolio ranges

from the maintenance of processing plants, to surface tech-

nology and industrial insulation work, all the way through to

turnaround management. Moreover, XERVON is one of the

world's most highly respected scaffolding businesses, thus

complementing BUCHEN's services perfectly.

Tank service

Catalyst service

Power plant service

Sludge dewatering

Cold cutting and many more

> BUCHEN industrial servicesOur number one priority:

compliance with all rele-

vant quality, health, safety

and environmental regu-

lations

It is essential that operations run smoothly at chemical and petrochemical businesses which means professional cleaning services and maintenance work are a must. Both BUCHEN and XERVON are well-known specialists in this field.

A variety of automated closed systems are available so that tanks of all sizes can be cleaned

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Automated systems: efficient and cost effective

Tanks and containers used for storing crude oil and heavy

oil products need to be inspected and cleaned on a regular

basis. This has to be done, for example, every time a tank's

content is changed, repair work and leak tests are carried

out, the thickness of the walls need to be measured or when

TÜV inspections are due. Without this, residue builds up,

deposits accumulate on the tank wall and the tank's storage

capacity is reduced.

A further problem are the layers of sludge which gradually

settle on the floor of the tank. This sludge not only consists

of sediment, sand and rust but also of a significant amount

of valuable paraffin and other hydrocarbons, especially in

the case of crude oil. Conventional manual cleaning

methods create high levels of emissions throughout the

whole cleaning process and the staff cleaning the tank

are continuously exposed to the contents, some of which

may be harmful. Moreover, manual cleaning systems are

extremely time consuming which in turn leads to high

downtime costs for the tank operators. To avoid all these,

BUCHEN Tank- and TurnaroundService works with auto-

mated, closed tank cleaning systems which it has further

developed over the last few years to meet the specific

requirements of the international market.

The stress factors involved in manual cleaning work are,

for the most part, eliminated when automated systems are

deployed. As chemicals are not used, the majority of the

crude oil stored in the tank can be recovered, making the

system particularly cost effective as there is less waste to

be disposed of.

Non-man-entry system

These extremely effective tank cleaning systems consist of

a series of modules which can be installed in sea containers

making them easy and safe to transport. Other advantages

of these automated systems include short cleaning times

and high levels of safety for the operatives as they do not

need to climb into the tank (non-man-entry system). The

tank cleaning systems described on the following pages are

suitable for both tanks with floating roofs and tanks with

fixed roofs.

■ Jet washer systems:

BTS jet washer system,

BTS compact system, BTS BLABO® system ■ Manway cannon:

Mover Cannon, Dozer

> Automated tank cleaning systems

> TANK CLEANING SYSTEMS

BUCHEN's innovative tank cleaning systemsBUCHEN has chosen to use automated cleaning technology because it has so many advantages over manual systems: firstly, it eliminates most of the stress factors involved in manual cleaning work; secondly, it is able to recover the majority of the crude oil in the tanks helping to reduce disposal costs.

BUCHEN Tank- and TurnaroundService is continuously further developing its tank cleaning systems – so they can be deployed all around the world

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> TANK CLEANING SYSTEMS

BTS jet washer system and BTS compact systemThese innovative systems stand out thanks to their high hydrocarbon recovery rates, their short clean-ing times and their stringent safety standards to protect both people and the environment. The actual cleaning work is carried out via jet washer nozzles which are inserted into the tank through liner tubes.

it is heated up to between 40°C and 60°C. The pressure

module then pumps this warm product back into the tank

via the three dimensional rotating jet washers so it can

act as a cleaning media. With the nozzles rotating in three

dimensions, the product enters the tank at high speed and

is aimed at the solid and semi-solid contents in the tanks

so that they are dislodged and liquefied. The heat reduces

the viscosity of the cleaning media further facilitating this

process. Inorganic residue such as sand and rust settle on

the floor of the tank, while the organic components in the

sludge are dissolved.

The gas space created in the tank is made inert with nitro-

gen to prevent a build up of static electricity during the

individual cleaning phases. Moreover, the oxygen content is

monitored throughout the whole process. If oxygen levels

reach a certain point, the tank cleaning system automatically

shuts itself off.

BTS jet washer system – a precisely controlled, multi-

stage cleaning process

The BTS jet washer system consists of a number of modules

which can be installed in sea containers enabling it to be

transported to wherever it is needed at short notice. The

main components of this explosion-proof cleaning system

are its mobile suction and pressure modules as well as its jet

washers. To be able to clean the tank, a number of the tank

roof supports are temporarily removed so that the washers

can be inserted through the openings into the tank. The

whole cleaning process is further facilitated by the special

pipe system with its tried and tested, quick release stoppers

and its high performance filters.

Once the system has been set up, the product is first re-

moved from the tank using one of the suction modules and

then run through a steam-powered heat exchanger where

The product in the tank is

pumped out, heated up and

then returned to the tank so

it can be used as a cleaning

media

Very little electricity is needed to start the new automated compact system; additional pumps are not required either

4

BTS compact system

The BTS system is a closed, automated tank cleaning system

that has been designed and built by the company itself.

It fits into a single container which means it is both easy

and economical to transport and is particularly suitable for

international projects. For the most part, the equipment runs

mechanically as a conscious decision was made during the

planning stage to only install electronic parts if they were

absolutely necessary. As a result, it is easier to maintain and,

if required, the tank cleaning experts are able to repair it on

site themselves.

Very little electricity is needed to start the system and get it

running. A mechanical bypass connected to the pump makes

it possible to regulate how much liquid passes through –

accurate to 100 litres. Thanks to the high performance

pumps that have been fitted into the system, three jet wash-

ers can be used simultaneously: the greater the number of

jet washers in action, the faster the tank contents are heat-

ed up. Once this stage has been completed, specific areas

of the tank are then targeted and cleaned by increasing the

pressure and using a single jet washer.

Once the cleaning work has been finished, the BTS compact

system is even able to clean itself.

■ Rapid cleaning times ■ High safety standards for staff and the

environment ■ Hydrocarbon emissions are kept to a minimum ■ Very high recovery rate of hydrocarbons ■ Tank residue and disposal costs are kept to a

minimum

> Your advantages

The so-called jet-washer units are installed through several liner tubes into the tank

Gas recirculation

N2

Nitrogen

O2 monitoring

Crude oil to jet washers for flushingRecovered crude oil to refinery

Control air

Oil

Oil sludgeDuo-filter

Steam

Suction module

Pressure module

Sludge

How the BTS jet washer system works

The product is first removed from the tank and heated up, before being returned to the tank at high speed and under pressure via the rotating jet washers where it is used to detach the solid and semi-solid contents

5

> TANK CLEANING SYSTEMS

BTS BLABO® Jet Washer System

Computer-aided jet washer technology

Our BTS jet washer system based on BLABO® technology

is the most effective closed and automated tank cleaning

system currently available on the market. Consisting of a

number of modules, it can be installed in 20' containers –

perfect for transporting all around the world.

The system is based on computer-aided jet washer tech-

nology. It operates at pressures up to 12 bar and is fully

automatic – controlled via a touch panel in the containers.

The jet washers can be inserted into the tank's existing

openings which have a diameter of approx. 200 millimetres

(manways, sampling pipes etc).

Moreover, we can use certified cold-cutting technology to

make openings at any point in the tank roof and then attach

a flange foot to fix the jet washer securely into place. This

can be performed on both full pontoon roofs (double mem-

brane) and on floating roofs with only one membrane.

The cleaning media is heated up in an integrated heat

exchanger and then pumped into the tank through the jet

washers where it stirs up the sludge in the tank and binds

the valuable hydrocarbons (HC).

The highest levels of

safety are achieved by using

nitrogen to create an inert

atmosphere in the tanks and

continuously monitoring the

oxygen content. If oxygen

levels reach a certain point,

the tank cleaning system

automatically shuts itself off

The system can be deployed all around the world as its modular design fits perfectly into 20' containers

A number of additional options make it possible to further increase the quality of the crude oil re covered by this system. This is achieved by creating two separate material streams – one containing less sediment than the other. One option here is to direct the material stream with higher levels of sediment through a three-phase decanter.

6

At the same time, inorganic sediments such as sand and rust

accumulate on the floor of the tank allowing the recyclable

HC content in the sludge to be pumped out of the tank. The

sediment-rich residue generated by the BTS process is re-

moved from the customer's system during the final manual

cleaning phase so that it can be sent for disposal.

A two-stream cleaning process

Hydrocarbon recovery rates of 98 percent have been

achieved in previous tank cleaning projects using the BTS

BLABO® system.

With this technology reaching such high levels of perfor-

mance, it can also be deployed for cleaning tanks with fixed

roofs and especially for removing heavy oil residue and slop

as well as catalyst and cracker residue.

Hydrocyclones have been integrated into the system so that

the HC-enriched cleaning media can be separated into two

individual streams during the automatic cleaning phase. The

first stream, which contains the sediment from the tank, is

either fed into a decanter or into an intermediate storage

tank. The second pre-cleaned and high quality stream is

returned to the customer for re-use.

Ideal for more difficult cases

such as slop, catalyst, cracker

and heavy oil residue

The jet washers are fully automated and are controlled via a touch panel located in the containers

The system is installed via the tank's existing openings or open-ings can be created at any point in the tank roof – thanks to our certified cold cutting technology

Maximum levels of success

The tank is then rinsed out with hot water to achieve the

best possible cleaning results before the staff carry out a

final check of the tank. A skimming module is used at this

stage to recover any remaining oil from the water.

If necessary, the cleaning media can also be fed through a

three-phase decanter. This gas-tight decanter is a safe me-

thod for processing the media and separating the oil, water

and solids from each other to further improve the quality of

the recovered crude oil.

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> TANK CLEANING SYSTEMS

Manway Cannon If the inside of a tank needs to be inspected before and/or during the cleaning process, then the Manway Cannon is the perfect solution – and also a highly effective alternative.

Equipped with onboard camera and lighting system

The Manway Cannon is a closed tank cleaning system and

is suitable for all tanks with a diameter of up to approx. 60

metres. This cleaning cannon is attached to the manways

either at the side or top of the tank. It is equipped with an

onboard camera and lighting system so that the whole of

the cleaning process can be monitored. The washer nozzle

is located between the light and the camera.

The camera attached to the Manway Cannon records the cleaning work and also facilitates the documentation process

■ High pressure pump up to 30 bar at 950 l/min ■ Cannon nozzle with a camera and lighting system ■ Online station to monitor the

atmosphere in the tank

> Technical details

The system complies

with the Machinery

Directive and has been

constructed in accord-

ance with ATEX 114A mobile version is also available by attaching the Manway

Cannon to a dozer undercarriage

8

Control by joystick or fully automated

The whole of the cleaning process is monitored via the

screens in the control room (also in a container) and digital-

ly recorded for documentation purposes.

The cannon itself can either be controlled manually via a

joystick or automatically using special software. This means

that even in extreme situations the staff are able to see ex-

actly where the cannon nozzle is pointing and to adjust it if

necessary. The inside of the tank is made inert with nitrogen

to prevent explosions. The atmosphere and gas levels in the

tank are then monitored via the gas measuring equipment

in the control room. Should certain levels be exceeded, the

system automatically shuts itself down. Any gases gener-

ated by the removal of the residue from the tank (e.g. by

the suction module) can be returned to the tank to prevent

them having a negative impact on the environment.

Mover Cannon and Dozer

We offer two further cleaning systems based on the Man-

way Cannon: the Mover Cannon and the Dozer.

The Mover Cannon system is remotely controlled and con-

sists of a cleaning cannon – equipped with a camera, light

and jet nozzle – fastened to a dozer undercarriage.

N2

Nitrogen

Oil

Oil sludgeSuction

Cleaning media

Hydraulics & lightVideo

Water, gas oil or crude oil

Control module

Diesel engine / generator

Sludge

The different ways of using the Manway Cannon in tanks with floating / fixed roofs

The staff control the Manway Cannon from the control room container. They can adjust the direction of the cannon's nozzle whenever necessary

■ No entry – personnel do not need to enter the tank ■ Employees do not have to wear heavy breathing

equipment ■ Remotely controlled from the control room ■ A closed system, no negative impact on the environ-

ment

> Your advantages

A second camera attached to the system enables the opera-

tives to see all around the inside of the tank being cleaned.

This allows them to focus the nozzle on any remaining

residue – a function that is particularly useful in large tanks

or in tanks that staff are not permitted to enter, for example

tanks in danger of collapse. The whole cleaning process is

monitored via screens in the control room, from which the

Mover Cannon is also controlled.

This vehicle can also be converted into a dozer which is

controlled manually and used to clean tanks that do not

require fully automated cleaning systems. Moreover,

it can also be deployed to remove any remaining

inorganic material such as sand and rust after

a crude oil tank has been cleaned with an

automated system.

9

> SLUDGE DEWATERING

Gas-tight, three-phase decanters in accordance with the ATEX DirectiveSeparating oil sludge in decanters is a specialist service primarily used by the petrochemical industry. In our line of work, this service calls for the highest possible safety standards to prevent explosions and protect human health and the environment. Our sludge system complies with the ATEX Directive and is covered fully with nitrogen.

Lower waste disposal costs

Being part of a group, we are able to provide you with gas-

tight, three-phase decanters for separating flammable or

harmful substances.

These gas-tight units are covered with nitrogen, comply

fully with the ATEX Directive and can be used to process

substances with a flashpoint of below 21°C. The system is

fully enclosed to protect human health and the environ -

ment. Absolutely no emissions are released from the unit –

a particularly important factor when carcinogenic or poison-

ous substances, such as hydrogen sulphide or benzene, are

being processed.

Using mobile equipment to treat flammable or harmful

substances at the place they are actually generated con-

siderably reduces the volume of waste and, as a result,

waste transport costs. Moreover, the recovery of recyclable

materials, such as oil, helps to protect our environment.

Our customers have lower waste disposal costs and higher

yields.

These new units are particularly suitable for processing: ■ crude oil sludge ■ slop residue ■ residue from tank cleaning work ■ oily wastewater sludge ■ sludge containing solvents

The enclosed system pro-

tects human health and the

environment

The system is gas-tight. Absolutely no emissions are released into the atmosphere

10

■ Constructed in acc. with ATEX 114 (formerly ATEX 95) ■ Operated in acc. with ATEX 137 ■ Units inspected and approved by TÜV Nord ■ CE label ■ Effective protection against explosions ■ High degree of separation

– dry solid matter

– oil and water of very high quality ■ Lower disposal costs ■ High product yield ■ Compact design in two high-cube containers (40'), stacked ■ Possible to set the unit up close to point of production (zone 2)

> Your advantages

Safety

These units are constructed in accordance with ATEX

114 (formerly ATEX 95 – 94/9/EC Equipment Directive).

FILTRATEC, our sister company responsible for mobile sludge

dewatering services within our group, operates the units in

line with ATEX 137 (1999/92/EC Workplace Directive). This

guarantees protection against explosions (both electrical

and mechanical). The customers can rest assured that all

valid rules and regulations concerning explosive atmos-

pheres in the workplace are fully complied with at all times.

Cost cutting

In the past, mobile units were unable to be fully protected

against such explosive atmospheres. New developments

now make this possible opening up completely new ave-

nues. With such comprehensive measures in place to prevent

explosive atmospheres, sludge can now be safely separated

at temperatures above their flashpoint. An integrated heat

exchanger is used here to heat up the material.

Separating substances into three phases at the right tem-

perature produces particularly dry solid material as well

as clean oil and water. This helps to reduce the costs for

disposing of the solid waste and the liquids can be sent on

for further processing.

Gas-tight, explosion-proof decanter

An explosive atmosphere is unable to be created within the

unit as the whole of the system transporting the substances

in this gas-tight decanter is covered in nitrogen – there is

no oxygen present. Moreover, as the system is completely

sealed, absolutely no emissions are able to escape into the

atmosphere.

Decanter plant

Sediment

Crude oil tank

n Zone 0 n Zone 1 n Zone 2 n No zone

The gas-tight decanter in the upper container is unable to

create its own explosive zone. The lower container is defined

as a Zone 2 area as a precautionary measure. As the unit is

allowed to be placed in the Zone 2 area, the sludge can be

processed close to the point it is produced, for example next

to tank.

The oil sludge is separated into solids (bottom), water (middle) and oil (top) in one single step

An important safety factor: an explosive zone cannot develop around the unit as the decanter is gas tight

Zone 2 (factory set)

11

> TURNAROUND SERVICES

Washing area and apparatus serviceRefineries, chemical plants and power stations all need to be maintained at regular intervals. During shutdowns, BUCHEN Tank- and TurnaroundService GmbH cleans and maintains plants and plant com-ponents such as heat exchangers, filters, columns, tanks and containers, air cooler systems, distillation towers and reactors.

Perfectly planned

Innovative mobile units and a whole range of equipment

are deployed during shutdown projects. Everything must

be continuously adapted to meet customer wishes and the

latest technological developments. Managing the cleaning

and maintenance work is particularly important both before-

hand – during the planning phase – and during the actual

shutdown period itself.

Automated high pressure cleaning systems for greater

efficiency

Perfect time management is a must during shutdown pro -

jects and creates an important competitive edge. This is

where our mobile washing areas play a vital role enabling

heat exchangers to be cleaned efficiently and quickly using

automated high pressure water equipment. Thanks to our

innovative processes, we are able to provide a reliable

service, achieve the highest possible levels of throughput

and keep our customers' downtime to a minimum – whilst

always using environmentally friendly processes and

adhering to the most stringent of safety standards.

We work with state-of-the-art equipment. Hydraulically

adjustable roller blocks, for example, are used in the

We deliver on budget and

on time – and keep a very

close eye on work safety

and quality

Time is money. As maintenance work in-terrupts operations, it needs to be carried out quickly and efficiently

■ Customer advice ■ Compiling and systematically implementing safety

concepts ■ Setting up/maintaining the infrastructure at the

construction site ■ Ideal deployment of staff and equipment ■ Planning schedules and monitoring them on site ■ Organisation of any necessary auxiliary work ■ Real-time cost control

> Our services

12

washing areas for positioning the heat exchangers, no

matter what their size. Thanks to these blocks, not only can

the inside and outside of the heat exchangers be cleaned

more quickly, the throughput rate is faster as well, as the

roller block system does not need to be adjusted manually.

Our portfolio also includes the cleaning of small parts – such

as filters or hoods – using hand-held equipment or our mi-

ni-excavator. Various high pressure cleaning tools can be at-

tached to the arm of this vehicle to create a highly effective

mobile cleaning device. In some cases, we also recommend

the use of a mobile water treatment unit: depending on the

load, the volume of wastewater generated when cleaning

heat exchangers can be reduced by up to 90 percent.

Our high pressure water cleaning systems operate at up to 1,400 bar

■ Available at short notice, both at home and abroad ■ Low transport and installation costs ■ All work is performed and documented by our

company ■ Very good cleaning results thanks to the automated

systems ■ Efficiency of the heat exchangers is restored

> Your advantages

Gentle removal of stubborn deposits

All detachable residue is removed from tanks, containers

and columns when they are being cleaned. Even the most

stubborn of deposits can be loosened with our high pressure

water cleaning units – a non-abrasive process with pressure

levels ranging between 150 and 1,400 bar and a flow rate

of up to 260 litres per minute. The residue is then flushed

out of the object by the flow of water.

Moreover, we have a wide range of auxiliary attachments

such as tank washer heads with their many different types

of nozzle (operating both radially and axially) and adjusta-

ble magnetic brakes. All this equipment helps to ensure we

clean tanks, containers and columns quickly and efficiently.

Thanks to our special positioning unit, the various tank

washer heads can reach practically every part of the object

being cleaned.

We clean and maintain heat exchangers, filters, columns, tanks and containers, air cooler systems, distillation towers and reactors

13

> ADDITIONAL SERVICES

Additional specialist servicesThe list of requirements in the field of industrial services is both complex and diverse and this is reflected in the services we offer. Our portfolio ranges from mobile nitrogen production units and mobile combustion chambers, to corrosion protection systems, all the way through to cold cutting work. A brief description of these services can be found on the following pages.

burn industrial gases at temperatures exceeding 1,000°C in

accordance with the 'TA-Luft' (Technical Instructions on Air

Quality Control). It has been tested in accordance with 'TRbF

20' (Technical rules for flammable liquids), has TÜV certifica-

tion and burns both hydrocarbons as well as explosive and

hazardous gases. Thanks to our combustion chamber, tanks

can be cleaned safely and accessed more quickly at the end

of the process.

This unit enables industrial gases to be burned quietly

and in a controlled manner whenever containers, such as

storage tanks, need to be inspected or cleaned. The mobile

combustion chamber prevents hazardous residue being

formed in the waste gas. In the case of an emergency, nitro-

gen is fed automatically into the system. Any flames in the

tank or pipes are smothered immediately – the system then

shuts itself down quickly and safely. Thanks to our mobile

combustion chamber, emissions are cut reliably, safely and

sustainably. State-of-the-art burner technology and bespoke

technical systems ensure the combustion process is residue

free in accordance with the most stringent environmental

standards.

Cutting-edge equipment,

state-of-the-art technology

and mobile, automated

processes help to protect

people and the environment

and ensure flexible and

professional solutions are

found no matter what the

situation

Our mobile combustion chamber cuts emissions reliably, safely and sustainably and prevents hazardous residue being formed in the waste gas

Even the most stubborn of deposits can be detached from the walls with our high pressure water cleaning equipment and then removed from the tank by the flow of water

We produce nitrogen on the go

BUCHEN operates several nitrogen production units. These

units, operated according to the membrane principle, consist

of air compressors, separators, air dryers and special nitro-

gen membranes. They have a capacity of 180m³ to 400m³ of

nitrogen per hour and achieve a maximum level of purity of

99 percent nitrogen. These nitrogen production units can be

used, for example, for creating an inert atmosphere in tanks

or other types of technical equipment.

Mobile combustion chamber

Our mobile combustion chamber has been designed to

14

Protection against corrosion

Whether it be ships, tanks, containers, floodgates or industri-

al plant components: corrosion will always be a problem

when metal surfaces are exposed to the weather. BUCHEN's

anti-corrosion specialists provide the full range of services –

from carefully removing the old coats and layers of rust all

the way through to recoating the surfaces.

Corroded surfaces are often blasted using conventional

methods. A more cost-effective and more environmentally

friendly alternative is to detach the layers using ultra high

pressure water up to 3,000 bar. Thanks to these fully auto-

mated units, old coats and layers of rust can be removed

via remote control. The water used for cleaning the surface

and the coating residue are collected and separated from

each other. This is not only faster, it also cuts costs as, for ex-

ample, there is no need to find a way to access the surface

being treated. Once the old coat has been fully removed,

the surface is re-coated using certified coating and sealing

systems.

Cold cutting using WASC technology

Not only must high levels of precision be achieved when

carrying out cutting work at industrial plants, the systems

must also be extremely safe. For this reason, cold cutting is,

more often than not, the method of choice.

Thanks to the WASC procedure, it is no problem at all to cut through steel up to 400mm thick and concrete up to 500mm thick

We have perfected this method with our water abrasive

suspension cutting technology (WASC). Abrasives are added

to the high pressure water jet which is then used to carefully

and precisely cut the material. It makes no difference

whether the material is soft or very strong: the equipment

can cut through steel up to 400mm thick and concrete up to

500mm thick. Despite its immense cutting power, the WASC

technology is very gentle on the material.

Another alternative cold cutting process works with injector

cutting nozzles. This is the preferred method for dismantling

chemical plants as it is so effective. The unit needed to con-

trol the cutting wagon is connected to the container that

stores and regulates the amount of abrasives added to the

water.

Thanks to state-of-the-art technology, old coats and layers of rust can be removed – for example from tanks – without the need for scaffolding

15

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BUCHEN Tank- and TurnaroundService GmbH Emdener Str. 278 50735 Köln // Germany T +49 221 7177-537 // F +49 221 7177-88537btts-bu@buchen.net // btts.de

A company of the REMONDIS Group

BUCHEN is part of the REMONDIS Group,

one of the world's largest recycling,

service and water companies. The company

group has more than 500 branches and

associated businesses in 34 countries across

Europe, Africa, Asia and Australia. With over

30,000 employees, the group serves around

30 million people as well as many thousands

of companies. The highest levels of quality.

Working for the future.