B513 Planning Meeting, 5th December 2002

Present:           Nigel Baddams, Tony Cass, Anne Funken, Jukka Lindroos, Jose Miranda

1.             Previous Minutes

  1. No comments.

2.             Substation Planning

  1. There is still concern in IT about the future power demands. However, it is agreed that we build now a substation to cover a load of 2.5MW in B513. Options to expand to 4MW will be explored in parallel.
  2. The caniveau position was reviewed. Are two really needed, especially if they are just 4.5m apart or is one larger caniveau better? Generally, one large caniveau is preferable, but Anne is concerned about the impact if this passes into the UPS room. Tony shared Anne’s concerns, but had a preference for completing all the major civil engineering work in one phase. After some discussion, it was considered possible to build one caniveau running under S-413 and routing cables into S-412 via the technical gallery under the building. This would involve the least construction overall, but would require the construction of a pit in S-412 once the existing UPS is decommissioned. Nigel, Anne and Jose will check the feasibility of this solution.
  3. The revised positions for the air conditioning ducts were reviewed. There does not appear to be any conflict between the duct position and sizes and the proposed location of electrical equipment. There was some discussion about the optimum arrangements for air conditioning in the low voltage room—mostly on whether or not the cold air should be distributed under the false floor. This can be decided later, however, as there is no impact on the size of the duct to be passed into the room from the S-206 corridor.
  4. Jose considered that the overall dossier is in a state to be passed to the design study bureau once the necessary ordering paperwork is completed.
  5. Two points were noted.
    1. There is still no precise information concerning the size of the equipment to be installed in the LV room. The current layout of the new substation is based on the maximum electrical equipment needed to fulfil IT’s requirements and the actual input data, meaning the maximum space needed. A detailed study is under way and when the precise sizes of the non-standard LV switchboards are available the layout of the electrical equipment could be optimized. Detailed recommendations from ST/CV about their existing LV switchboards may change the arrangements for the supply of their equipment, altering the layout of the safe room..
    1. The civil engineering study is launched now—before the completion of the detailed electrical study and based on the maximum space needed—due to the delays of the civil engineering phases and the desire to commission at least the first phase of the substation (high voltage and safe room). during the 2003/2004 shutdown . Launching the civil engineering study now means that the bunker will be ready for the installation of electrical equipment on 3rd November, 2003. As 3rd November is the latest possible date for electrical installation work to start if it is to be completed during the shutdown, any delays in the civil engineering work will delay the commissioning of even the first phase to the 2004/2005 shutdown.

3.             AOB

  1. Next meeting: Date to be agreed—preferred options were 11am, Wednesday 11th December or 3pm, Thursday 12th December.