Source: https://tendernation.io/opportunities/01a140a7-eefd-7341-b899-b1ff47d2d2d1/sweden-mechanical-engineering-installation-works-convection-parts-boiler-tu closed SE # Mechanical engineering installation works – Convection parts (boiler tubes) for Unit 1 and 4 in the Uppsala Waste incineration plant [Vattenfall AB Procurement Heat Sweden](https://tendernation.io/buyers/vattenfall-ab-procurement-heat-sweden) Estimated value SEK 90,000,000 Published 11 Nov 2025 Deadline Closed 24 Nov 2025 ## About this tender LTE Investment for Unit 1 and 4 in the Waste incineration Plant AFA in Uppsala, Sweden. ​ The waste incineration plant in Uppsala consists of a total of three waste boilers, two of which are from the 80s and one that was commissioned in 2005. The waste incinerators are the base production units of district heating and steam in Uppsala. On the two older waste boilers, Unit 1 and 4, it is time to replace pressure vessel parts (convection parts) in order to continue operations until 2040. Other parts (membrane walls in furnace and the so-called “lattice tubes” have previously been replaced and supplemented with overlay welding. The steam data is 15 bar(g) and 200°C for both boiler. This procurement concerns replacement of the convection parts in the horizontal pass (three evaporator bundles and one economizer) of Unit 4, to be carried out during summer overhaul of 2026. As an option we also ask for replacement of the corresponding parts of Unit 1 during the summer of 2027. As another option, the tenderer shall also include replacement of the membrane walls surrounding the horizontal passes. The Purchaser will supply detailed drawings of the existing tube bundles and the Contractor shall design, manufacture and install the new tubes with necessary adaptations to modern criteria for design, testing and inspection. Also included in the scope is a new soot cleaning system for the convection parts. The tenderer shall include removal and scrapping of the old rapping system and replacement with a more modern system. The basis for the design will be a visit to the site as well as boiler drawings. Read full description ## CPV classification Mechanical engineering installation works Pressure vessels Waste incinerators Source Tenders Electronic Daily (EU) · Notice 746336-2025 [View official notice](https://ted.europa.eu/en/notice/746336-2025) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Vattenfall AB Procurement Heat Sweden: past awards and live tenders](https://tendernation.io/buyers/vattenfall-ab-procurement-heat-sweden) [Sector More Construction work tenders](https://tendernation.io/sectors/construction-work) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Hdc-1714 wadkins pavilion refurbishment · Harborough District Council · 39 days left · 27 Nov 2026](https://tendernation.io/opportunities/01a155bf-f664-72f9-9823-a85d6cddbdc6/hdc-1714-wadkins-pavilion-refurbishment) [Design, supply, and Installation of Newbiggin Skatepark Extension · Newbiggin Town Council · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15552-19a2-7348-a5cc-3f5ae51ef934/design-supply-and-installation-of-newbiggin-skatepark-extension) [Tender for the design, supply, delivery and installation of a modular UNIT and associated works at ARC healthy living, irvinestown. peaceplus funded upgrade works · Fermanagh and Omagh District Council · 14 days left · 2 Nov 2026](https://tendernation.io/opportunities/01a15552-1b74-73ec-a6f6-a1af37959997/tender-for-the-design-supply-delivery-and-installation-of-a-modular-unit-and-a) [ESPH AB RDC Sidley Depot (ESPH753) · Rother District Council · 49 days left · 7 Dec 2026](https://tendernation.io/opportunities/01a15552-1d19-7155-8fe0-0d917105fca8/esph-ab-rdc-sidley-depot-esph753) [Demolition, Design and Construction of Howard's Lane Public Toilets, Howard's Lane, Wareham · Wareham Town Council · 88 days left · 15 Jan 2027](https://tendernation.io/opportunities/01a15552-1d8a-7277-bc5b-edc9a127ee5b/demolition-design-and-construction-of-howards-lane-public-toilets-howards-la)