REFERENCES – Nordic Power Service Oy

Fiberline piping installation

Being the biggest project in the company’s history, Nordic Power Service delivered Fiberline Piping Installation to Södra Cell Värö Mill in Sweden, as main contractor to Valmet Ab. Project was started with workshop prefabrication and site preparations at second half of 2015. Site installations were started half a year before the main mill shut down in May-June, and project was completed in August 2016. Installations included in addition to the main portion of stainless steel piping certain special materials as titanium, and also large scope of FRP (Fiberglass Reinforced Polymer) piping. Delivery scope covered also scaffolding works and NDT inspections by the respective subcontractors. Project’s main challenge was tight shut down period schedule. During the mill shut down peak installation NPS overall site allocation was over 200 persons. Project execution was successful, evidencing NPS capability to run large and demanding project deliveries.

Modernization project

This highly demanding modernization project was carried out together with Valmet and Mondi Dynäs in spring 2015. Project included installation of new super-heater 3 and roof tubes, modification of super-heater connecting pipes and re-location of upper part soot-blowers and new wall panels, as well as installing a new lower rear wall of the furnace. Replacement of all air openings with window welds added extra challenge to the project. In addition, air distribution system on lower part of the furnace was modified and new boiler bank ash hopper and conveyor, and smelt spout cleaning robot were installed. Successful completion of this very complex modification project reflects the highly skilled workers and top of the market know-who of the NPS team.

NPS and Diamond Power Finland Oy have made a cooperation agreement regarding assembly work and maintenance services of Diamond Power product line. We thank Diamond Power for selecting us and will continue to drive high quality cooperation also in the future.

“This cooperation agreement brings together Diamon Power’s worldwide known top quality product line and highly reliable and flexible NPS assembly services. Together we are able to create clear value add to our customers with best in class deliveries” Jukka Vanninen, Managing Director, Diamond Power Finland Oy

Modernization project

We carried out a challenging modernization project for Metso Power and Kuopion Energia Oy, where we converted an old grate boiler into a modern bubbling fluidized bed boiler. We participated in the modernization from the planning stage until the NDT inspections and the whole project was executed in a close cooperation with the customer. The project is our company’s largest single delivery so far.

The bottom exchange of a recovery boiler

We implemented an extremely demanding project for Andritz and Kotka Mills Oy. In the project, we changed the bottom of a recovery boiler. The project included several challenging elements and its successful outcome reflects our company’s core know-how and the expertise of our team.

In addition to the tight schedule, the tangent pipe wall solution of the boiler together with the Sanicro38 material brought their own special challenges to the project. In spite of this, we managed to perform the work in the world record speed, only in 6.5 days.

The renewal of the primary superheater and the maintenance of the power plant

A turnkey project for Valmet in Raand, Holland included the renewal of the primary superheater and the maintenance of the power plant. The project serves as a good example of our comprehensive projecting services and the high competence of NPS GmbH Germany. The success in this project also exemplifies the seamless cooperation between the NPS parent company and the German subsidiary.

• Replacement of recovery boiler air openings

• CFB Boiler econimizer replacement

• Replacement of lamella packages for evaporator 2A and 2B.

 EON BLACKBURN MEADOWS UK

UPM CALEDONIAN PAPER UK

• Replacement of lamella packages for evaporator 2B and 2C
• Modernization of vapour ducts, condensate and steam piping

• Recovery boiler upgrade

• DTWG system, piping and equipment installation

• Manhole door openings to superheater area
• Flue Gas Duct expansion bellow replacement
• Grid nozzles replacement
• Boiler maintenance works

• Replacement of lamella packages for concentrator 1B and 1C.

• Replacement of lamella packages for concentrator 1A, 1B and 1C
• Replacement of circulation pipes
• Replacement of liquir distribution systems
• Replacement of flashtank including new piping
• Installations of new pumps

• Replacement of evaporator unit tube bundle.

• Furnace lower part walls replacement. Inconel overlay welded panels
• Replacement of Hybex grid
• Replacement of furnace nose and screen tubes
• Replacement of primary superheater
• Upgrade for economizers 1-3
• Installation of eco`s sootblowers and piping
• Feedwaterpipe installation
• Primary airduct modification
• Flue gas duct modification
• Platform modification.

• Tertiary openings replacement
• Front and rear wall repair panel replacement
• Sootblower openings replacement
• Boilerbank ties renewing
• Smelt spouts replacement

• Modification of evaporator vessels droplet separators

• Replacement of lamella packages for evaporator units 1A and 1C

• New flue gas coolers for recovery boiler

• Air preheater replacement
• Cold secondary and cold primary packets. Total weight of 150 tons.
• New safety valve silencer with piping. Grid nozzles replacement, 1500 pc.
• Boiler maintenance works.

• Primary Superheater replacement
• Boiler maintenance works

• Ash cooler replacement
• Left side wall replacement
• Rear wall replacement

Tampella Boiler renewals as follows:

• Air preheater replacement
• Load burner replacement including new piping and ducting installation

• Recovery boiler bottom replacement

• Three Lamella Packages Replacement on Concentrators A, B and C

• Recovery Boiler tertiary superheater replacement

K1 boiler renewal as follows:

• K1 boiler bottom replacement
• Secondary Superheater replacement

CFB boiler renewal as follows:

• Economizer packets, 3 pcd
• Modifying of hot gas duct
• Pipeline modifications. Platform modifications
• Repair of ash hoppers

Recovery Boiler renewals as follows:

• New low pressure piping installation
• Installation of two additional flue gas cooler packets
• Steel structure installation for additional flue gas cooler

Recovery boiler bottom replacement as follows:

• Bottom replacement
• Primary air ducts and registers
• Secondary air ducts and registers
• Downcomers with distribution pipes
• Low pressure piping
• Smelt spouts and minihoods
• Start up burners
• Bottom material Sanicro38

HP 2 Boiler retrofit as follows:

• Installation planning
• Installation schedules
• Manpower planning
• Second pass demolition
• Second pass installation
• Furnace and bottom installation
• Ducting installation
• HP piping installation
• MP piping installation
• NDT Inspections

• Recovery Boiler economizer replacement with eco casing, ashhoppers and conveyors

• BFB Boiler Front Wall replacement

• Recovery Boiler sootblowers and sootblower piping renewal in economizer area, Varkaus

• Recovery Boiler sootblowers and sootblower piping renewal in economizer area, Kemi

• BFB boiler rear wall partial replacement
• Superheater bends replacement
• SH covershields replacement

CFB boiler air and fuel feeding system renewal as follows:

• Furnace frontwall
• Air ducts
• Rezi gas duct
• Fuel chutes
• Low pressure piping
• Fuel feeding conveyors and screws
• Platform modifications

CFB Boiler retrofit as follows: 

• By pass economizer replacement
  Installation of new recirculation gas duct and fan
• Platforms modifications and renewals
• Spray water valve group modifications
• Sootblowers and sootblower pipelines modifiacation
• Fan room, new coils silo and electrical room steel structure installation

• CFB- boiler additional economizer installation works. Includes pipelines, ducting and platform renewals and modifications

• CFB- boiler rear wall and kick-out area replacement

• Recovery Boiler Primary and Secondary airpreheater packet replacement

• Cooling water system and process piping installation

• Installation of new super concentrator 1D/E
• Installation of mechanical equipments
• Installation of new pipelines and supports

• Superheater 1 and 2 replacement
• Screen tube replacement
• Installation of new dissolving tank

• Superheater 1 and 2 replacement
• Screen tube replacement
• Installation of new dissolving tank

• BFB boiler tertiary superheater partial renewal
• Wall panel replacement
• Grid nozzle replacement

• Replacement of lamella package for evaporator concentrator 2

• Replacement of lamella package for evaporator concentrator 2
• Replacement of evaporator
• 1D concentrator end shell
• Pipeline modification