Nuon (part of the Vattenfall Group) operates 2 generators (built in 1974 and 1985, 360 and 460 MW) at the Velsen 24 & 25 plants using the blast furnace gas provided by the nearby steelworks for the generation of electricity.

At the time of their installation, both generators were installed in accordance with the then current technical standards. The modernizing of the existing H2 and sealing oil system of each generator became necessary due to the local conditions, the aging condition and new requirements from accident prevention and explosion protection regulations.

We supported planning, tendering, bid evaluation, quality assurance and implementation of the project. Finally, we supported the client during commissioning and checking of the documentation.

Services of VPC at a glance

• Review of the situation and condition on site, summary of findings and comparison with applicable requirements
• Development of a concept for all measures to modernize the H2 and sealing oil systems of both generators
• Drawing up bid specification
• Bid evaluation and support in drafting contracts
• Site management
• Clarification/development of details of the QA plan
• Monitoring of the completeness and sequence of test steps specified in the agreed QA plans and project deadlines
• Participation in meetings at the manufacturer’s factory and in the power plant; implementation of erection inspections
• Checking of final documentation