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Pfeil December 2007 BHR – a new name for EHR

As of 1 January 2008 Essener Hochdruck Rohrleitungsbau GmbH (EHR) is going to operate under the name of BHR Hochdruck-Rohrleitungsbau GmbH, abbreviated BHR. As EHR is a subsidiary of Bilfinger Berger, this step is only logical. One letter changtes – what remains is the successful growth in the national and international power plant market with multiple large-scale orders over a long period of time.

The long-established and successful 60 years of EHR will be seamlessly continued under the name of BHR. The course has been set for the future – with the orientation towards national and international markets, with highly qualified staff, with an efficient organisation, with substantial investments in new technologies such as a further inductive bending plant, which is officially going to be put into operation in February 2008.

Pfeil November 2007 Siemens continues to build with and count on EHR

By order of Trianel Energie GmbH, a consortium headed by Siemens PG is erecting a hard coal-fired power plant in Lünen Stummhafen. The power plant block is designed for a performance of 820 MW and shall be be connected to the grid by the end of 2012. EHR is going to supply the high-pressure piping systems for this power plant.

Following successfully completed projects, e. g. combined-cycle Mainz-Wiesbaden and combined-cycle Hamm-Uentrop for Siemens PG, EHR was once again commissioned the engineering as well as manufacturing and installation of the high-pressure piping for the water-steam cycle in this large project. The order has a value of approximately € 50 m.

The power plant is going to be designed according to the most up-to-date economical and technical specifications to work at high pressure and temperatures so as to gain maximum overall efficiency. EHR will greatly contribute to this with their material, manufacturing and welding technologies.

The piping components are going to be manufactured at the EHR shop in Dortmund and installed at the power plant. The amount of material is about 1,150 tons of piping, 70 tons of fittings, 200 tons of supporting structures and 55 tons of forged steel. With the application of steel P92 for the piping systems “live steam” and “intermediate superheating”, we use the top of the range of current materials.

Pre-engineering has already started. The project is managed from the EHR office in Frankfurt.

Pfeil October 2007 New inductive bending plant just around the corner

By means of a second inductive bending plant, especially tailor-made for EHR, all types of bending needed in power plants can be manufactured in the EHR plant in Dortmund as of the beginning of 2008. Substantial preliminary work for the foundations is going on at full speed and is within the schedule for a start next year.



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Pfeil September 2007 20th World Energy Congress in Rome

From November 11 to 15, 2007 Essener Hochdruck-Rohrleitungsbau GmbH (EHR) will take part in the 20th World Energy Congress in Rome. EHR will present itself here as well as Babcock Borsig Service GmbH with its subsidiaries SteinmÙller Instandsetzung and Babcock Noell under the umbrella of Bilfinger Berger Power Services.
Visit us in hall B, booth L40.

Pfeil September 2007 VGB Congress "KRAFTWERKE 2007" in Salzburg

09/19/ - 09/21/2007
09/19/ - 09/21/2007

From September 19 to 21, 2007 Essener Hochdruck-Rohrleitungsbau GmbH (EHR) will present itself under the umbrella of Bilfinger Berger Power Services in the Austrian city of Salzburg. In addition to EHR, Babcock Borsig Service GmbH with the subsidiaries Steinmüller Instandsetzung and Babcock Noell, will also be represented.

Visit us: booth E 24/25

Pfeil August 2007 Auditing of procedures in the Dortmund Orbital Center successful

EHR is the first high-pressure piping system manufacturer to own a TIG (tungsten inert gas) orbital narrow-gap arc welding plant which has successfully passed an auditing of procedures by welding a pipe made from modern high-temperature steel P92 with wall thicknesses of up to 90 mm. With the repair of a turbine bypass pipe (see photo) the most recent configuration of this fully mechanised narrow-gap welding process was successfully introduced in practice. It has been common practice to weld joints in the installation of high-pressure pipes almost exclusively using the manual TIG/E procedure. EHR is now going to weld orbital joints for new power plant projects with great wall thicknesses and high-temperature steels faster and more reliable using the new TIG orbital welding procedure (vTIG).

Pfeil July 2007 Progress in the construction of Neurath Power Plant

Since the beginning of 2006, RWE Power has been erecting two pulverised lignite-fired blocks with supercritical steam conditions (PCF). In July 2007, the world’s largest mobile crane (3,000 tons of weight, 207 metres of height) is putting the boiler holders with a weight of150 tons into their place. The erection of the world’s most modern lignite-fired is entering its decisive stage and the starting signal for the EHR team’s fitting mission is about to be given. It is the EHR’s task, jointly with their consortium partner Kraftanlagen München (KAM) to do the planning, engineering, manufacturing and installation of the high-pressure piping systems for the water-steam systems of the power plant blocks. EHR is the leader of the consortium and is going to provide about 60 % of the overall contract value of €170m. A total of almost 5,000 tons of piping with a length of more than 20 km is going to be manufactured at the Essen and Dortmund workshops and fitted afterwards.

The leading manufacturing technology of EHR has been particularly sought-after since modern power plants work within ever increasing temperature and pressure ranges. This is why new material alloys with increasing wall thicknesses (up to 100 mm of wall thickness) are permanently being developed, which in return leads to extremely demanding welding technologies.

Here you can take a live look at the construction site using our webcam:

Pfeil June 2007 Power Plant Moorburg ahoy!

The new power plant in Hamburg’s port is scheduled to be connected to the public grid in 2012. Two blocks with a power of 820 MW each are planned. 450 MW of thermal power can be decoupled for district heating. In order to connect the new plant to Hamburg’s district heating system, a long-distance pipeline is going to be built, which will be lead from underneath the port and River Elbe to the district of Altona. EHR and BBS (Babcock Borsig Service GmbH) have been contracted by Vattenfall for the engineering of the high-pressure piping systems for the two blocks and, with the reservation of a construction permit, also for the supply, pre-fitting and installation. 1,250 tons of pipes, 55 tons of fittings, 200 tons of supporting structures and 50 tons of forged steel will be deployed just for one block alone. Material P92 would be used for the live steam and intermediate superheating systems. The bendings of the pipes for the intermediate superheating systems could be manufactured using inductive methods on the new bending machines at the EHR workshop in Dortmund.

Pfeil May 2007 Re-start for Boxberg Power Plant

Following a deconstruction down to three blocks and modernisation, Block R with a power of 670 MW will be newly built until 2011. Along with their consortium partner Babcock Borsig Service GmbH (BBS), EHR were contracted by Vattenfall Europe Generation AG & Co KG in Cottbus to manufacture the high-pressure pipes for the new block. The order comprises the planning, manufacturing and installation for the water-steam cycle with about 1,450 tons of pipes, 70 tons of fittings, 230 tons of supporting structures and 50 tons of forged steel. The new block is going to be laid out for high pressures and temperatures according to up-to-date parameters. We will manufacture the pipeline components in our workshops in Dortmund and Essen and install them on site afterwards. The engineering work has already started.

Pfeil April 2007 A good piece of craftsmanship

In Europe, submerged arc welding “made at EHR workshop Dortmund” is a known quality term, particularly when it comes to welding thick-walled containers and hydraulic cylinders. You can see it in the photo, and here is a description of the photo: two joints on cylinders of 63 tons of weight each, with an outside diameter of 2,050 mm and a wall thickness of 422 mm, made from material St52.3. In order to manufacture each welding joint, approximately 800 kg of submerged arc welding wire and 1,000 kg of granular fusible flux were deployed. Both pieces were heat-treated in an oven. The non-destructive testing procedure of the welding joints was carried out according to customer specifications following manufacturing and confirmed the flawless quality.

Pfeil March 2007 Inverted siphon requires full blocking of the Rhine Herne Canal

If the lifeline of an air fractionation plant, i. e. the oxygen transmission pipe, is laid jointly with a drinking water supply pipe in a joint inverted siphon underneath the Rhine Herne Canal, even TV broadcasters are attracted to the site. Five truck-mounted cranes hook the 80 tons heavy and 65 metres long inverted siphon, which has been pre-fitted, welded, checked and insulated on a site near the docks by EHR specialists. Now the siphon is being launched, hooked into an installation catamaran and hauled with a hatched barge to the installation site. On the 22 March 2007, the inverted siphon is being turned into its final position across the waterway and being lowered into its prepared siphon bed. Perfect technology, perfect logistics, perfect timing and a high degree of safety – guaranteed by the specialists of EHR.

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Pfeil February 2007 Vamos Argentina

Vamos Argentina
Vamos Argentina

There had already been an order in 1994 – at that time for Mannesmann Anlagenbau – but in 1995, all work was stopped. Now nuclear power plant Atucha 2 in Argentina shall be completed. On 25 January 2007, Nucleoelectrica Argentina S.A. (NASA) and EHR signed a letter of intent in Buenos Aires. EHR are going to deliver the primary piping systems including the main coolant pipe, the surge line, the moderator system and the pressurising system as well as the live steam piping system in the reactor building. The order also includes the delivery of installation tools. In September 2007, one year of installation work is to start, which is going to be carried out together with local Argentinean installation personnel. As of immediate effect, the technical work and planning are done at the Dortmund works, and as of April/May all necessary project specific welding qualifications (welding process exams/work process exams) are carried out on site in Atucha.

Pfeil January 2007 EHR invites to Russia Power 2007

EHR invites to Russia Power 2007
EHR invites to Russia Power 2007

EHR is going to present its performance as the European market leader in high-pressure piping systems for power plants on the Russia Power 2007 from 29 to 31 May 2007 in Moscow. Please come and visit our joint stand of Bilfinger Berger Power Services, Stand No. C/6. We are looking forward to the opportunity of introducing your contact partners of the new Moscow EHR office to you.