Stadtwerke Rosenheim - SCR Nachrüstung

The contract timeline includes the following key milestones and phases:

• Bid submission deadline: November 12, 2026, 10:00:00 Uhr.
• Bid binding period ends: December 23, 2026.
• Earliest possible start of work with motor interruption: June 1, 2027.
• Montage until warm commissioning: Between June 1, 2027, and July 23, 2027.
• Latest completion of warm commissioning with successful function test: July 23, 2027 (calendar week 29).
• Trial operation (Probebetrieb) with 72-hour performance test: Begins after successful warm commissioning, all function tests, parametrisation, and controller settings. This may occur in September or October 2027 due to weather conditions and heating load. A cumulative trial operation is possible.
• Acceptance (Abnahme): Formally occurs through the signing of a handover protocol after the successful completion of the trial operation.
• Start of the warranty period: Commences with the successfully documented end of the trial operation and acceptance.

The documents do not explicitly state a singular contract start date for the entire project (only for the earliest work start), an overall contract end date, or a total duration.

The core scope of work and statement of work summary for this tender is the turnkey retrofit of a Selective Catalytic Reduction (SCR) system for Gas Engine 4 (GM4) located at Schönfeldstraße 15, 83022 Rosenheim. The overarching objective is to ensure compliance with legal framework conditions and emission requirements of 44 BlmSchV, enabling the continued operation of the plant beyond 2028, with all necessary exhaust gas aftertreatment components integrated into the existing gas engine building.

The core deliverables and scope of work include:

• Engineering & Planning: This involves surveying the existing exhaust gas path and site conditions, designing the SCR system (including catalyst volume, reactor geometry, dosing technology, injection, and mixing section), conducting flow simulations (CFD), and preparing layout plans and static/steel structure considerations.
• Delivery of Main Components: All components required for a fully operational, turnkey system are to be supplied. Key components include the SCR catalyst, SC catalyst, catalyst housing, mixing section, piping, insulation/damping, frame racks/brackets, a dosing system with a two-component nozzle, measurement technology, control system with an interface to the MHKW control system for data visualization and archiving, and the provision of fault messages. An optional 2000-liter intermediate tank with lines, control, and pump for filling is also part of the delivery scope.
• Montage and Installation: This encompasses the dismantling of existing components/piping as necessary, transport and installation of all delivered equipment, assembly of the complete SCR chamber, mixing section, piping, and accessories, complete insulation of new exhaust gas components and restoration of existing plant areas, special constructions for auxiliary structures, wall/ceiling penetrations (including core drilling and fire stops with documentation), and all necessary wiring. Compliance with the Water Resources Act (WHG) for urea components is required. Project coordination and management are also part of this phase.
• Commissioning: This stage includes functional testing of all components during warm commissioning (at partial and full load), parameterization of the control and regulation systems, a trial operation with a 72-hour performance test, and final acceptance/handover, which includes training for approximately 15 personnel over two shifts.
• Documentation: Comprehensive documentation, as specified in the contract terms, must be provided.
• Other Requirements: Adherence to occupational safety standards, specified noise requirements, and fire protection measures (including fire stops for wall and ceiling penetrations) are mandatory throughout the project.