Tekniska Verken i Linköping AB

Onsite Inconel® Cladding - Linköping, Sweden

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Client: Tekniska Verken i Linköping AB

Year: 2019

Milestones

• Contract: 25-06-2019
• Production start: 20-07-2019
• Start on site: 23-07-2019
• Boiler start-up: 21-10-2019

Data

• Fuel: Waste wood
• Steam temp: 475 °C
• Steam pressure: 56 bar

Project Description:
Babcock & Wilcox Renewable Service scope of supply included project management, engineering, design, purchasing, construction and documentation for onsite Inconel® cladding at boiler panel walls on an existing waste wood-fired boiler (Line 3) in Linköping, Sweden.

The cladding was performed in the bottom portion of the first pass, including part of the rear, left, right and front walls.

• The cladding area was approximately 260 m² (extended). The Inconel cladding was performed according to:
  • EN 12952
  • PED 2014/68/EU
  • EN-ISO 15614-1 and 7
  • VdTÜV-Merkblätte 1156
• Panel wall material P235GH, tube diameter 60.3mm, pitch 80mm
• Cladding with Inconel 625 (2.4831), thickness 2mm, minimum 50% overlapping
• Fe content for automatic process <8%
• Fe content for semi-automatic and manual process <10%
• Vertical panel walls were cladded by robot. Corners and bent tubes were cladded with semi-automatic and manual processes.
• After cladding, testing included NDT, 100% penetrant testing on all start and stops (top and bottom) and 2% of the total cladded area.