Data centre operator
225 kV GIS substation
Design review and review of the studies (VISA). We found deviations on the voltage transformers and on trip circuit redundancy.
Service
Owner's engineering
We represent the project owner on MV / HV electrical matters, from the definition of needs to energisation.
The project owner rarely has an HV specialist in house, while the contractor or integrator works within its own cost and schedule constraints. We review what is proposed, check compliance and technical correctness, and state what needs to be changed, as early as possible in the project.
Our comments are ranked blocking, major and minor, with a reference to the requirement (contract, standard, network operator) or the calculation that supports it. We do not issue a comment without a justification.
For the critical calculations (short-circuit, voltage plan, protection coordination, earthing), we carry out our own check calculations in addition to reviewing the contractor's notes.
01What we do
Before construction
- Definition of needs and architecture
- Drafting or review of the CCTP
- Technical bid analysis
During construction
- Design review (VISA) of execution studies
- Review of substation drawings
- FAT / SAT follow-up
- Energisation and close-out of punch-list items
02Examples
03Our offer
Usual content of an offer for this type of assignment. The exact scope, deliverables and price are set in the quotation.
- Package 1Needs and architecture
Power, redundancy, phasing, interfaces.
- Package 2Tendering
Technical specification (CCTP) or its review, technical bid analysis.
- Package 3Execution
Design review (VISA) of studies and drawings, check calculations.
- Package 4Testing and energisation
Attendance at FAT and SAT, follow-up of punch-list items.
04How we work
- 01Needs and architecture
Power, redundancy, phasing, interfaces.
- 02Tendering
Technical specification (CCTP), technical bid analysis.
- 03Execution
Design review (VISA) of studies and drawings, check calculations.
- 04Testing and energisation
FAT at the factory, SAT on site, punch-list items.
05References
Data centre, Île-de-France
225 / 20 kV substation
Review of the drawings for the entire substation package against the client's requirements, with the list of major deviations.
39 MW storage plant
Audit of a 33 kV single-line diagram
Review of the integrator's diagram and list of corrections to request, for the project owner.
06Frequently asked questions
Owner's engineering or design and supervision engineering?
As owner's engineer, we advise the project owner and carry out the checks. We do not take on full design and supervision engineering (maîtrise d'œuvre). We do, however, provide ad hoc support to the teams that do, on MV / HV aspects.
Full or targeted review?
Both are possible. A review can be limited to compliance with the client's requirements, with the major issues reported.