TT2 Meeting (AC/DC cables work units)
Present: K. Hanke, H. Sabri, G. Sterbini, H. Damerau, K. Papastergiou, P. Lelong, J. Devine, G.M. Georgiev
K. Hanke informed that the topic in the agenda concerns the budget needed for the TT2 AC/DC cabling. This is the first of a series of meeting needed to address the TT2 open actions. K. Hanke explained that CONS approved and will manage the renovation of the nToF converters and the LIU-PS will menage only the TT2 converters part. So all the specialists are asked to split the total budget allocated in TT2 related activities (that will be absorbed in the already existing LIU-PS work packages) and nToF activities (managed by CONS). H. Damerau informed that if no clear criteria can be found to determine the TT2/nToF budget repartition, a pro rata of 5/6 (TT2) +1/6 (nToF) should be applied.
H. Damerau suggested that within the different WPs a TT2 WU should be created in agreement with the WP holders.
K. Hanke and H. Damerau informed that the present allocated budget in LIU-PS for the DC and AC cabling is respectively 254 and 297 kCHF. All requests to reconsider that budget has to be submitted as soon as possible for the rebaselining of the project (the deadline was the 15 Jan 2015).
P. Lelong presented the situation for theTT2 DC cabling (the cabling from the converter to the magnets). The rational of the present and future cabling scheme was illustrated. P. Lelong confirmed that the budget presently allocated for the DC cables in TT2 is 254 kCHF (+ 55 kCHF in CONS for nToF). The budget includes:
- Removals of the present installations (DC connection bewtween B250 and B269 and removal of the DC on surface connection in B269).
- DC cabling in B269 up to the jointing zone.
- Connection in the jointing zone between the new and the old DC cables.
- Supervisions of the work.
The following activities are NOT included
- Removal of old DC cable trays.
- Installation of new DC cable trays.
Concerning this last point, a visit will performed this week (J. Devine). An estimation of the cost will be provided in 2 weeks. H. Damerau asked to P. Lelong to open a WU "TT2 DC cabling" in the WP EN-EL WP with the present estimation (254 kCHF) and to update it as soon as possible when the cable trays quotation will be available .
G.M. Georgiev informed that the DC cost estimation assume that the 50% discount present valid for the installation costs will be still in place when the contract will be signed.
G.M. Georgiev asked which WU is responsible for the metallic structure of the racks. H. Damerau proposed to compute this cost in the EN-EPC WP. K. Papastergiou will contact S. Pittet for confirmation.
H. Sabri asked if the 15% increase of the TE-CV WP was already considered. H. Damerau answered positively.
J. Devine presented an very detailed breakdown cost of the TT2 AC cabling. The total envelope of the budget is 600 kCHF (TT2 + nToF). Assuming the usual pro-rata, 500 kCHF has to be budgeted in the new baseline. In the present baseline only 297 kCHF are considered. K. Hanke commented that a difference (200 kCHF) is relevant but possible cuts (e.g., B259 lighting renovation) are only marginal. K. Hanke will inform M. Meddahi.
G.M. Georgiev and H. Sabri asked to K. Hanke to inform CONS about the needed maintenance work in B269 (in particular reparation of the roof).
K. Hanke announced that the next meeting will take place on Friday focussed on the WIC system. The confirmation on the agenda and the people invited will shortly follow.