B513 Planning Meeting, 3rd February 2004

Present:           Tony Cass, Anne Funken, Jukka Lindroos, Jose Miranda Vizuete, Tim Whibley

1.             Previous Minutes

  1. 2.4) Delivery of the 18kV cells is confirmed for the second half of March; the middle room of substation should be ready for then.

2.             Substation Status

  1. Various small items:
    1. Preparation of the final finishing work continues despite the poor weather.
    2. Additional openings are being made for the HVAC ducts.
    3. Schulthess have some problems with the installation of the false floor due to variations in the level of the concrete. These are within the acceptable tolerance, however, and so Schulthess will have to make the necessary adjustments.
  2. Installation of cable trays and lighting will start in the second half of March.
  3. ST/EL are still investigating possibilities for transparent transformer housings; there is some difficulty in ensuring adequate ventilation as it is apparently not possible to create the louvered grills in plexiglass.

3.             Machine Room Upgrade Status

  1. A plan for the location of the grills in the false floor is still needed—and must be provided by the week of February 23rd to allow time to move cut and damaged floor tiles. Jukka will contact Nigel Baddams about this.
  2. Steel Systems have quoted €2,700 for the modifications to the false floor to accommodate the ducts along the Salève wall. However, various modifications were shown on the plan sent to Steel Systems and it is not fully clear which are covered by this quote.  Jose and Jukka will check.
  3. Although ducts will be placed under barn wall now, connection of the ducts to the cold air plenum will be planned in parallel with plans for remodelling the barn. It would be possible to have one descending duct near the Salève side with a horizontal duct under the false floor rather than multiple ducts down the barn wall. Anne commented that the old canalis distribution along this wall will need to be removed.

7.       Losinger have quoted CHF22K for the creation of the three holes in the floor of the cold air plenum to connect the vertical ducts in the columns along the Salève wall. Jose will place the order although we still need confirmation from J. Treleani (the architect for the bunker) that no special reinforcement is needed for the building. Various issues related to this work were discussed:

a.       the risk of transmission of dust through the machine room: this should be minimal, but will be checked as work progresses and protection added if necessary.

b.       the need to rework the drains from the HVAC area that run through the floor to connect to the downpipes for rainwater:  Jukka needs to trace the required cuts in the plenum so that the impact can be understood.

    1. can the holes nearer the archive store be cut now given that equipment in that area, including electrical tableaux, is in service? This, and other safety related issues will be discussed during the work inspection planned for 10am on February 24th.
  1. Responses to the price enquiry for the installation of ducts on the right hand side are due for the next week; the order should be sent out by February 13th.

4.             B513 HVAC Planning

  1. ST/CV now have a draughtsman working on the project, but Jukka considered that it would take up to three months to prepare a full model of building, including the routing of chilled water pipes and their state.
  2. It was not possible to check the state of chilled water pipes during the week of January 26th. Jukka will contact Serge Deleval to find out when this will be done. Equally, the test with all stations running (in order to measure noise levels) still has to be scheduled.
  3. There was some discussion of the need for a thermal cut out system. If this were to operate at the PDU level, modifications would be needed to the PDUs that have been installed in the machine room. However, as the risk of failure is low, it would be acceptable for this to act at the UPS level and cut all physics services. This, though, would require modifications to the 400V switchboards now under construction. It was agreed that we first need to understand the rate of temperature rise in worst case scenario. This will be prepared by Jukka.

5.             AOB

  1. Marc Collignon has prepared a new plan for the network area, including the move of racks to provide adequate maintenance clearance for the PDUs. The installation of normabarres in this area may be arranged accordingly; this area will be used permanently by CS so there is no need for a generic arrangement.
  2. Next Meeting: 14:00, Friday 27th February