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Cristiana Colloca GS/SEM – ATOP – MARCH 2009

Infrastructure Consolidation of Accelerators Injectors (civil engineering) Cristiana Colloca GS/SEM – ATOP 5th of March 2009. Cristiana Colloca GS/SEM – ATOP – MARCH 2009. Contents. CONCERNED Surface - Roofs, façades, floors, windows, sanitary etc. all buildings (machine and tertiary)

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Cristiana Colloca GS/SEM – ATOP – MARCH 2009

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  1. Infrastructure Consolidation of Accelerators Injectors (civil engineering) Cristiana Colloca GS/SEM – ATOP 5th of March 2009 Cristiana Colloca GS/SEM – ATOP – MARCH 2009

  2. Contents • CONCERNED • Surface • - Roofs, façades, floors, windows, sanitary etc. all buildings (machine and tertiary) • Roads, parking, green areas, storage surfaces, etc. • Cleansing • Underground tunnels • NOT CONCERNED • For all the buildings (machine and tertiary), surface and underground: • - HVAC • - Heating plants and heating network • - Electrical equipment • - Lifting and transport equipment • - Automatic doors • - Kitchen equipment • -... THESE WORKS ARE NOT CONVERED BY THE NORMAL MAINTENACE CARRIED OUT EACH YEAR Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  3. References DATA AND DETAILS IN SITE CONSOLIDATION ON CIVIL ENGINEERING AND TECHNICAL INFRASTRUCTURE AT CERN 2008 UPDATE C. Colloca, M. Nonis, P. Pepinster du 18.08.2008 SITE CONSOLIDATION ON CIVIL ENGINEERING AND TECHNICAL INFRASTRUCTURE AT CERN 2009 UPDATE C. Colloca, P. Pepinster du 24.02.2009 Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  4. Roofs consolidation : criteria Categories of roofs repair: 1 - Sensitive equipment: roof leaks are affecting the safety of equipment and/or the running of an accelerator; critical situation; immediate intervention is required 2 - High frequency leaks: the roof is no more waterproof and leaks are detected very often; conditions will become critical if an intervention is not taken within a short time Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  5. Roofs consolidation - SENSITIVE ~51% Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  6. Roofs consolidation - FREQUENT ~57% Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  7. Facades consolidation Carbonatation on concrete and corroded steel, icing-deicing cycles... (spalling phenomena etc.) Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  8. Facades consolidation ~22% Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  9. Other Miscellaneous Consolidation Measures - Buildings Windows, claddings, spalling concrete, painting etc. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  10. Other Miscellaneous Consolidation Measures - Buildings ~8% Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  11. Cleansing • CERN does not comply with applicable (no mix of clear and waste water and fosses septiques (ex. SPS)) • very bad condition of the drainage equipment due to age and progressive invasion of roots penetrating the pipes Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  12. Asbestos removal • The estimated cost for the asbestos removal from civil engineering structures is still kept to 5 MCHF for all CERN site, not including the ancillary work such as the relocation in other buildings of the working personnel for the duration of the work. • Main works are: • Bldg 150 • PS technical galleries Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  13. Consolidation Requests - Surface Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  14. Minimal Consolidation Program 2009 for Injectors - Surface Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  15. Underground Consolidation * - PS, SPS, Booster Previous canalisations of leaks were done using flexible PVC membranes. These need to be changed for the stainless steel channels now used, in order to comply with current fire norms. *Contribution of Richard Francis Morton GS/SEM Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  16. Underground Consolidation - PS, SPS, Booster A campaign of repainting of the tunnel vault is required to reduce the amount of dust and contamination caused by water ingress and decay of the original paint. This work may also require some superficial repair to the concrete. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  17. Underground Consolidation - SPS Significant areas of tunnel floor have been contaminated by hydrocarbons and will require resurfacing. Additional work is required to ensure construction joints are repaired and levelled to allow transport to pass. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  18. Underground Consolidation - SPS Construction of an oil separator at one or more locations underground to allow oil to be removed from the drainage system before it is pumped to surface. A campaign of decalcification and cleaning of the central drain is long over due. This work is currently hampered by the lack of water supply at regular intervals along the tunnel. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  19. Other Miscellaneous Consolidation Measures - Underground A campaign of repair/replacement of the concrete covers to the technical gallery in the PS is required to make safe the floor. Many of the toilets in the underground SPS complex are in a poor state of repair and require renovation. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  20. Consolidation Requests - Underground *The amount of work possible is entirely a function of access during shutdown. This may mean spreading the work over several shutdowns. Cristiana Colloca GS/SEM – ATOP 5th of March 2009

  21. Conclusions • CERN infrastructure (surface and underground) is rapidly deteriorating, trends are negative (i.e. roofs) => overall consolidation planning on large scale is a major issue to be treated because of safety, legal, operational and economical reasons • Consolidation costs are constantly rising due to the lack of intervention (ex. Anti-carbonatation treatments) • 2009 consolidation program is based on most urgent interventions known today, but depending on: • Budget (available today = 800 kCHF for all CERN (!)) • Boundary conditions during the approval of the program (accelerator operation, weather conditions, etc.) • Number of FTE assigned to perform the program • Increasing expectation for consolidation activities from CERN community, visible actions need to be done to avoid widespread feeling of frustration Cristiana Colloca GS/SEM – ATOP 5th of March 2009

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