1. 1 CNGS Electrical Services (PBS 5.5) S. AKHTAR - ST/EL

2. 2 AGENDA 1.ITEMS WHICH MAKE UP GENERAL SERVICES (UNDERGROUND) 2.CABLE TRAYS AND SUPPORTS 3.LV SWITCHGEAR 4.GENERAL SERVICES BUDGET (UNDERGROUND) 5.POWERING OF COOLING AND VENTILATION 6.BB4 ANNEX ELECTRICAL SERVICES (HORN & REFLECTOR) 7.TEMPORARY LIGHTING DURING INSTALLATION PHASE 8.SAFETY ASPECTS 9.CURRENT STATUS

3. 3 1. GENERAL SERVICES UNDERGROUND NORMAL LIGHTING SECURE (SAFETY) LIGHTING EXIT LIGHTING THREE PHASE AND SINGLE PHASE SOCKETS (NORMAL & SECURE) SUPPLY FOR POWER RAIL EMERGENCY STOP SUPPLY FOR EVACUATION SYSTEM LV SUPPLY FOR VARIOUS MACHINE PUMPS AND CONTROL UNITS LV SUPPLY FOR GSM REPEATERS EARTHING CABLE TRAY WORK

4. 4

5. 5

6. 6

7. 7 GENERAL SERVICES

8. 8 5. POWERING OF COOLING AND VENTILATION SURFACE

9. 9 POWERING OF COOLING AND VENTILATION

10. 10

11. 11

12. 12 BB4 ANNEXE

13. 13 Estimate for the temporary lighting and the powering of temporary ventilation fans. TT41 - No temporary lighting required. Although some mobile lighting will be required to fix the permanent lights. Cost = 2KCHF 7. TEMPORARY LIGHTING

14. 14 TAG41 & TAG42 - Total length of the two tunnels is 891 m long. If we install a light every 10 m, we will require 90 lights. Cabling and cost of light fittings and fixing = 22.5KCHF Ventilation chamber, junction chamber, service gallery, target chamber and 7 cross passages amount to 425 m in length. We require 43 lights. Cost of cabling, light fittings and fixing = 9.2KCHF TEMPORARY LIGHTING

15. 15 Decay tunnel (TND4) - Special lighting, must be easily removable, for the 1km Decay tunnel. We require 100 lights. Cost of cabling + connectors, light fittings and fixing = 23KCHF From the TI8 side - TZ80, TZ81, TZ82, TNM41 and TNM42 all amount to 330m. Here we will require 33 lights. ***Assuming the general services power point at UJ87 will exist*** Cabling and cost of light fittings and fixing = 11.7KCHF Total cost for the lights including dismanteling is : 72KCHF Powering of ventilation fans The two fans in SUI8 = 2.5KCHF The two fans in TI8 connecting galleries = 6KCHF The small fan in the service gallery = 1.5KCHF ***Assuming the general services power point at UJ87 will exist*** Total for ventilation 10KCHF.

16. 16 8. SAFETY ASPECTS

17. 17

18. 18 SAFETY ASPECTS

19. 19 9. CURRENT STATUS SOME AREAS CABLE TRAY WORK IS IN PROGRESS - COMMITTED EQUIPMENT WHICH CAN BE RECUPERATED IS IDENTIFIED, MAINLY LV SWITCHBOARDS AND CABLE TRAYS AREAS WHERE A COMMON METAL SUPPORT CAN BE USED HAVE BEEN IDENTIFIED, MAINLY TA41 INITIAL STUDY WORK IS COMPLETED NOTHING ELSE COMMITED BUT THE HV/LV INSTALLATIONS ARE FORESEEN FOR TI8 IN MARCH 2003

20. 20 Access tunnel TAG41 (COMMON SUPPORT)