Back to ST Group Leaders'
Meetings Home page | CERN/ST-DI/ec (2002-070) | 1er mars 2002 |
| Présents | : |
J.L. Baldy, E. Cennini, R. Charavay, P. Chevret, P. Ciriani, E. Cochet, A. Funken, C. Jacot, I. Ruehl, A.Scaramelli, M. Wilhelmsson |
| Invité | : |
B. Jenssen / ST |
| Excusés | : |
A. Charkiewicz / HR - C. Jacot, P. Ninin, J. Pedersen / ST |
Le compte rendu nº 167 est approuvé.
2.1 Workshop Services Généraux LHC
Le STTC du 5 mars sera entièrement consacré aux présentations faites par la division ST. A. Scaramelli souhaite une solide discussion sur la matière des sujets et faire en sorte que toutes les affaires soient couvertes.
2.2 Formation pour l'accès au LHC pendant l'installation
Deux séances de formation sont prévues les 28 février et 1er mars pour le personnel
ST dans l'Amphithéâtre de l'Enseignement.
M. Vitasse viendra au GLM du 12 mars pour faire la formation aux chefs de groupe et
répondre aux questions éventuelles.
2.3 GLM du 19 mars
La réunion des chefs de groupe du 19 mars s'effectuera en "closed session" et les sujets suivants seront débattus : step supplémentaire à la fin de la période probatoire, primes, TEAC, rehiring.
2.4 Suivi des mesures dues aux restrictions budgétaires
A. Scaramelli encourage tous les chefs de groupe à expliquer à leur personnel les
difficultés budgétaires actuelles en précisant quel était le budget de l'année
dernière, quel est celui de cette année et quels sont les secteurs dans lesquels des
réductions sont opérées. Une copie devra être envoyée à Evelyne pour centralisation
dans le dossier "Coût LHC".
M. Wilhelmsson a participé au "CNGS Cost to Completion Review" du 18 au 20 février 2002. Un rapport en version draft a été publié; M. Wilhelmsson a souhaité en lire quelques paragraphes liés aux activités de la division.
3.1 Access controls
"Access controls for CNGS will be an extension of the proven and successful system in use at SPS. Therefore, design costs are minimized and cost estimates for the planned system are judged highly reliable. Costs could increase significantly if the authorities require improvements, which will not be known for sometime. You have identified minor cost savings that could be realized in construction by reducing the number of access control sectors but at the expense of an impact on future operations i.e. more effort on patrols. Such cost savings are ephemeral and would likely disappear in a 10 year total cost optimization".
3.2 Machine cabling and AC distribution
"A full and careful survey of the machine cabling has been made. Where possible previously installed components and facilities will be re-used. This include buildings, transformers, switchgear and even cable trays. Equipment lay-outs are well planned and costs are detailed. Time scales and cost estimates benefit from well informed past experience".
3.3 BB4 Annex Building
"The estimated cost and construction duration for the BB4 Annex building appears adequate. As long as the scope of the building does not grow, the likelihood of a cost overrun is small. If, however, the scope of the building were to be reduced (perhaps by deleting the space for the third bank of pulse capacitors - which are identified as only being useful if the SPS were run in a mode where three extractions per flat-top would be possible) the cost of the building could be reduced by perhaps 10%. One is cautioned the the engineering design costs of redesigning buildings can quickly consume this saving. Schedule risk of this building is small to none. Seven percent contingency is included in the cost estimate and is included in the value shown in the spreadsheet".
3.4 Decay Tube
" Overall engineering of the decay tube is well along and supports the cost
estimate. Appropriate issues have been addressed. Alignment tolerance of +/- 5 centimetres
should be easily met so long as the contractor sets up an appropriate survey network.
Installation duration estimate of 7.5 months is reasonable and should be met. Energy
deposition of the decay pipe and surrounding concrete is very similar to that modelled for
NuMI, it seems that similar problems have resulted in similar answers. Carbon steel of the
decay pipe should be protected from corrosion by the high pH of the concrete as long as
the contractor is prevented from using sodium chloride as an accelerator in the concrete.
Adequate restraint appears to be provided to resist the hydraulic forces of the green
concrete.
The only concern identified by the reviewers is that the CNGS project should not wait
until the vacuum pipe is fully completed before starting to leak check. Leak checking
needs to be able to locate the location of any leaks to be able to perform repairs.
The decay pipe does offer some opportunity for cost savings if the use of external
stiffeners is allowed. Savings may exceed 300,000 CHF".
3.5 Air Conditioning
"These items have been designed and costed by competent CERN/ST groups having
broad experience in similar projects for LEP, LHC or WANF. They are also experienced in
installation in underground areas and tunnels. We thus feel that the cost estimates for
these items are solid and can be endorsed as such.
The CNGS area will be highly activated. The access shaft is situated near highly populated
area. A fire with exhaust of fumes would be a real problem. Intervention of firemen would
be difficult and a large quantity of radioactive water would accumulate. As a fire
extinguishing water circuit is available, this looks like a good application of the
"hot foam" concept to quench fire and contain radioactive dust. This may cost as
a very rough estimate an additional 400 kCHF".
3.6 Cooling
"Scope, capacity and size of the CNGS cooling systems were presented as being known. Heat loads are reasonable. Cost estimates of the largest system (for the magnets in TT41) was presented as a single line in excess of 1.3 MCHF. Instrumentation was not explicitly identified. Accuracy of this cost estimate is difficult to assess without a finer cost breakdown, but the over all estimate is consistent with similar systems. Cost presented in the transparencies are mostly accurately included in the cost spreadsheet. No comments were made concerning the possibility recuperation of existing cooling system components. While it is unlikely that a system with all the correct capacities (flow, pressure) would be found, there is a chance that some savings can be found by recuperating equipment. Schedule risk to do cooling system installation appears small".
3.7 Electrical infrastructure
"Scope and material take-off quantities of the electrical infrastructure appear well understood and complete. Example single line schematic diagrams were presented. Costs shown on in the presentation are mostly accurately shown on the cost spreadsheet. Potential costs savings resulting from re-using material have already been taken advantage of. Little opportunity for further cost savings is apparent. Minor cost growth is likely due to additional scope identified as the designs of other systems are completed (e.g. power for remote handling robots or cooling system equipment). Fortunately, this additional scope should be very limited and can be expected to be covered with perhaps less than 10% contingency. Risk of schedule delay resulting from the electrical infrastructure should be minimum".
3.8 Crane in the Target Chamber
"The crane in the target chamber design specifications appear to include all
features appropriate for use in a high radiation area. The cost estimate reflects this
complete feature list. Estimated cost is approximately twice that of a crane without the
features needed for this environment. The final cost of this crane will likely not exceed
the estimate significantly. However, efforts to reduce the crane features (and therefore
the costs) require cautious consideration, especially since nearly all of the hot
component replacement planning remains to be started.
Schedule risk for the target chamber crane is low so long as the project does not try to
compress the 14 month delivery and the 2 month installation.
B. Jenssen a préparé un tableau à compléter par les chefs de groupe donnant la répartition du personnel de chaque groupe pour 2003 en fonction des différents secteurs sur lesquels ce personnel travaille, à savoir :
La répartition s'avère assez délicate à établir : il faut compter les personnes qui travaillent en direct et répartir le reste au prorata, tout en occupant tous les espaces et le temps de manière harmonieuse. Le rapport 60/40 (60 pour le LHC et 40 pour reste) serait un chiffre d'équilibre.
Ce même exercice est à faire pour 2008, date à laquelle nous passerions de la phase
projet à la phase d'opération.
B. Jenssen a recensé les besoins des groupes pour l'opération et l'infrastructure LHC
de 2002 à 2006, en tenant compte des nouveaux équipements et de l'intégration des
équipements LEP. Les listes ont été distribuées aux chefs de groupe et B. Jenssen leur
a demandé de vérifier si rien n'a été oublié avant vendredi 1er mars.
A. Scaramelli informe que les différentes Task Forces ont exposé leur rapport final
devant le Directeur Général et les chefs de division lors d'une réunion le 22 février.
Sur la base de ces recommandations, le Directeur Général annoncera des propositions
d'économies, de structure, de mesures de contrôle, etc. au Comité du Conseil du 21 mars
2002.
Suite au problème rencontré par du personnel d'entreprises de droit français faisant
partie de la convention collective BTP pour obtenir l'habilitation médicale permettant la
délivrance d'un film-badge pour travailler dans des zones radioactives, le Docteur V.
Fassnacht a été invitée par A. Scaramelli pour clarifier la situation.
Il s'avère que suite à un changement du système de visite et d'homologation de la
Médecine du Travail en France et à une mésentente entre les conventions CHI de l'Ain et
BTP, le suivi médical n'est plus assuré pour le personnel sous convention BTP. Comme il
a été demandé au CERN d'assumer cette fonction, le Directeur de l'Administration a
répondu que le CERN, en tant qu'organisation internationale intergouvernementale, ne
pouvait d'aucune manière se substituer à un service français. A. Scaramelli propose
qu'un courrier soit envoyé à ces entreprises leur stipulant qu'elles sont
contractuellement responsables pour les habilitations médicales et qu'elles doivent se
plier à la règlementation française. A. Scaramelli mettra le Dr Fassnacht en relation
avec T. Lagrange pour que la situation soit rapidement débloquée.
E. Cochet
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