Contributions from BE -ABP -ASR -BI -CO DG -RP EN -CV -EL -MEF -STI GS -SEM -ASE IT -CSPH -CMXTE -CRG -EPC -MPE Follow up on option 3c: New Evacuation Gallery Work method, Schedule, Cost, Implications for CMS

Method of work and draft schedule → Week 1 & 2 → CE set up time - impact on CMS only → Includes metallic platform installation, ventilation system for dust extraction, tooling installation, temporary power cables, dust screen. Loading platform

Method of work and draft schedule → Week 1 & 2 → Removal of services in UJ56 – “Eau Brute” water piping (~1week if prepared), CV equipment (1week), BRAN gas bottles…

→ Week 3 & 4: → Excavation phase – Impact only on CMS – no work on the –Z end of the UXC55 → Removal of services in UJ56 – water piping, CV equipment… Method of work and draft schedule To UXC55

→ Week 5& 6: → Excavation phase – Impact both on CMS and UJ56 Method of work and draft schedule To UXC55 Second crew

→ Week 7,8,9 & 10: → 4 weeks of lining - impact on both CMS and UJ56 → Shuttering, concrete pipe through the PX56, paint… Method of work and draft schedule

→ Week 11 and 12: → 2 weeks of clean up - impact on both CMS and UJ56 → Removal of metallic platform in UXC55 Method of work and draft schedule

→ Week 13 onwards: → Installation of blast door ~10kCHF → Installation of a sector door in new gallery (move from UJ561) → 1 st draft estimate: ~60CHF mainly driven by software modification and commissioning → Installation of lighting → Modification of ventilation Method of work and draft schedule

→ Error margin on time estimates for CE work → +/-20%, → Potential sources of delay → Difficult dust management → Services not dismantled in time in UJ56 → Unforeseen access restrictions → Unexpected water inflow from PM54, unforeseen geological conditions Additional considerations

→ Error margin on cost estimates for CE work → 800,000CHF +/-30%, → Use of PM56: to be used for CE personnel access → Potential RP issues → S Roesler: The design should not compromise the non designated area status of the USC55, especially since the geometry would allow to add shielding → Getting simulations to back this statement would take 1 month of a fellow…. Once this gallery becomes part of the baseline solution, the resources for the necessary verification will be found, if necessary, with financial help by Christoph Additional considerations

→ During the 2012 shutdown CMS will have to be fully open to allow the servicing of the PIX → -Z end draft sequence already very challenging. → 12 weeks of delay would have to be included. → Significant overhead Impact on CMS

→ Cons: → Non negligible cost → 12 weeks of delay on the CMS schedule → Significant disruption to the CMS Experimental area during work → Pros: → Faster and safer emergency evacuation → Allow using the UJ561 for R2E or upgrade projects → In line with initial and approved evacuation scheme (Christoph Schaefer) Pros and Cons

Reserve Slide CV equipment To relocate for R2E BRAN Gas Can be moved 6.92m J Bos PH-CMX

Reserve Slide J Bos PH-CMX New blast door

Reserve Slide → EN-EL work: ~ CHFM2.3 → Not including work to be done by other service groups contributing to the relocation of EN-EL equipment → GS-SEM work: → Escape gallery: < CHFM1 → Service ducts: CHF4,000/m → E.g: 15m link between UJ56 and bypass = CHF60,000 → Costs of fire doors, smoke detection, metallic structures, cooling and ventilation, re-commissioning still not assessed