B513 Planning Meeting, 12th November 2004

Present:           Nigel Baddams, Tony Cass, Serge Deleval, Anne Funken, Jose Miranda-Vizuete, Tim Whibley

1.             Substation Status

1.        Overall, the advancement of the electrical installation work is reasonably satisfactory. Installation of the 18kV cables will start once the caniveau extension has been joined to the galerie technique; work on this will start early next week and last 2-3 days. The 48V equipment is scheduled to arrive by the end of November. The tender for the critical UPS will be opened on November 19th; delivery is foreseen for February 2005.

  1. Installation of the air conditioning systems is a little late, but is expected to be complete by the end of the year, if not early December. However, the installation can’t be fully tested until the critical UPS is in operation.

2.             Substation Commissioning Timetable

  1. The likely timescale for the commissioning of the new substation is as follows

Date

Step

Mid-Jan

Transformers connected into 18kV loop but running without load.

Mid-Jan-end-Feb

Cables installed between existing PDUs and new substation. Work takes 6-weeks overall, but PDUs can be switched over as soon as the new cables reach them.

Early Feb

General services (i.e. offices, lighting, …) moved. There are 9 PDUs in total; can switch 4 per day. Foresee two weekends for this.

Feb/Mar

Critical services UPS installed and commissioned.

Late-Feb/early-Mar

HVAC PDUs moved over. There will be temperature rises for short periods, especially in the vault.

Late March

“Critical” PDUs moved over. This can be done without interruption for the in-service PDU in the machine room, but an interruption is required for the vault PDU. Equipment with dual power supplies should not be affected, however.

Mid-March

Physics PDUs moved over.

  • No cut for equipment with dual power supplies in the critical areas
  • No cut for equipment in the vault (PDUs have dual inputs)
  • RHS PDUs are grouped; we need to understand the impact.

Late-Feb OR late-Mar

Physics UPS moved between substations. This could take up to two weeks to complete. However, the UPS cannot be in two places at once! PDUs moved (a) before or (b) after the UPS will also be without cover until (a) the UPS or (b) the PDUs themselves are moved.

3.             HVAC Status & Planning

1.        Installation of the ducting on the left hand side of the machine room has been arranged as an avenant to a contract for work in the ATLAS pit. The initial quote for this work, 175KCHF, is significantly cheaper than the 350KCHF estimated earlier in the year. Work is expected to start on November 15th and last until the end of January.

2.       It was proposed to install ducts some 30cm in front of the Jura side wall in order to avoid the wooden separation between the machine room and the corridor. However, a visit to the machine room showed that doing so would reduce the free space behind first row of equipment racks to an unnaceptable extent. Serge will thus ask for the ducts to be installed against the wall; this will entail some modifications to the recently installed plaster-block wall.

3.       Work to install the LHS floor grilles should probably be dealyed until at least January, in order to allow completion of other work—including installation of trays for the cables supplying the new PDUs. However, Steel Systems could be called earlier to review any false floor structure modifications needed to accommodate the new ducts. Serge would also be interested to see if there are options for grills or tiles with a reduced open cross-section for use near the edges of the room where ht eair pressure is highest.

  1. The underfloor air circulation will be brought into service gradually, allowing time to study the impact. The level of airborne dust will increase initially, but should decrease over time. In any case, the floor void on the left hand side should be cleaned before turning on the air flow.

4.             Civil Engineering work in 2005

1.        The electrical equipment in te existing substation can be dismantled from early April. This is expected to take about 4 weeks, for a cost of around 30KCHF. The remodelling work, which is expected to take around two months, could thus start in May. There are three aspects to the work:

a.       Extension of the second caniveau. The intention is to have this work done by Belloni under the contract for bunker construction.

b.       Demolition/remodelling of walls & doors. This is estimatd to cost 80-100KCHF so a price enquiry is needed; there is plenty of time for this process before the work needs to begin.

c.       Construction of a false floor: to be managed by ST/EL; expected cost of around 50KCHF.

2.       To enable the new UPS system to be installed in early 2006 (or, preferably, late 2005), the tender needs to be adjudicated at the Finance Committee of September 2005. The process thus has to start early in 2005 with a Market Survey sent out by the end of January.

  1. As the UPS will not be installed until November 2005 at the earliest, it would be possible to install the micro-pieux required to reinforce the B513 foundations for the proposed B513 remodelling until October. After this date, the false floor must be in place and the micro-pieux cannot be installed with the UPS in service. Jose will ask J. Treleani for a quote to perform the studies required for installation of the micro=pieux.

5.             AOB

1.        A new coordination plan is needed. This should show

a.       the actual positioning of equipment on the RHS,

b.       the new rack and normabarre layout for the LHS

    1. the air conditioning ducts.
  1. Next Meeting: 10:30, Friday 10th December.