Point 5 - Cooling Network - Key Primary Water Chilled Water Mixed Water Eau Bruite Standard Power Diesel Backup Comp Air Primary Water at 20-25C – Produced by Cooling Towers Chilled Water at 5C – Produced by Chillers Mixed Water at 14-18C – Produced by Chillers, Heat Exchangers or by mixing Primary & Chilled water Eau Bruite – Supplied for refilling of circuits & the fire fighting network Demi Water Demi Water at 16-18C – Produced by Heat Exchangers from either Chilled or Mixed water – Divided into Copper and Aluminum types Standard Power – Electrical power for pumps, valves & chillers Diesel Backup Power – Electrical power for control panels & cubicles Compressed Air – Instrument Quality or Standard air for actuators and control valves

Primary Water Mixed + Chilled Water Mixed + Chilled + Demi Water Point 5 - Cooling Network SF5 Cooling Towers SUX5 Chilled Water Production USC55 CV Zone Cooling Distribution CHILLED 5 C MIXED C PRIMARY C CHILLED - 7 CDEMI - 18CMIXED -16C

DEMI WATER POINT 4 DEMI WATER POINT 4 PM56 EAU BRUITE SH5 Comp Air SU5 Comp Air Standard Power Diesel Backup SF5 Cooling Towers SUX5 Chilled Water Production USC55 CV Zone Cooling Distribution Point 5 –Security of Supply Instrument Air To CV Zone, Tracker & CRYO Standard Air To Eau Bruite, Gas Room & UXC Eau Bruite for Refilling of all circuits & Fire Fighting network Demi Water supply for Refilling of circuits in UXC Diesel Backup Power only for supply of control Panels Standard Power supply of pumps & Chillers Failure of cooling towers results in loss of primary water to chilled water production, Interlocks stop the chillers. 1-2 hours before underground areas are affected. Failure of Eau Bruite will stop circuits when circuits are required to be refilled. Failure of power will stop cooling towers, however system shall restart automatically on return of power Failure of chillers results in loss of chilled or mixed water. 1-2 hours before users in underground areas are affected, depending on current demand Failure of distribution pumps will affect users within 30 mins. Failure of Eau Bruite will stop circuits when circuits are required to be refilled Failure of power will stop chillers & distribution circuits, however system shall restart automatically on return of power Failure of distribution pumps will result in a loss of cooling immediately. Failure of Eau Bruite or Demi Water supply will stop circuits when circuits are required to be refilled. Failure of power will stop chillers & distribution circuits, however system shall restart automatically on return of power. Failure of instrument air will stop circuits on low pressure condition

PM56 EAU BRUITE SH5 Comp Air SU5 Comp Air SUX5 SX5 SR5 SGX5 SX5 SCX5 DEMI WATER POINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER DEMI WATER POINT 4 SH5 SF5 Cooling Towers SUX5 Chilled Water Production USC55 CV Zone Cooling Distribution Point 5 – Cooling Network 5-6 C C 5-6 C 7 C 18 C 17.9 C +/ C14-15 C C ccc AA

SF5 Cooling Towers Primary Water Redundant Pumps SH5 SUX5 PM56 EAU BRUITE Standard Power Diesel Backup Control Cubicle Equipment Power SH5 Comp Air SU5 Comp Air The SF5 Cooling Towers are used to generate primary cooling water between 18-22C. This water is used to directly cool some equipment, however mainly this water is used to Transfer heat away from the Chilled water production system – Primary water heat exchangers. The water in this circuit is treated with chemicals to prevent corrosion and bacteria. The Cooling towers are refilled from the Eau Bruite supply located in the PM54. The refilling is to compensate for evaporation and filtering processes. Primary Water Filling

PM56 EAU BRUITE SH5 Comp Air SU5 Comp Air SUX5 SX5 SR5 SGX5 SX5 SCX5 DEMI WATER POINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER DEMI WATER POINT 4 SH5 SF5 Cooling Towers SUX5 Chilled Water Production USC55 CV Zone Cooling Distribution Point 5 – Cooling Network

SUX5 SX5 SR5 SGX5 SX5 SCX5 PM56 EAU BRUITE USC55 Chilled Water USC55 Mixed Water Standard Power Diesel Backup Control Cubicle Equipment Power 3.3KV Power Chiller Power SUX5 Chilled Water Production SF5 Cooling Towers Primary Water Filling Mixed Water Filling Chilled Water Filling Primary Water from Cooling Towers Primary Water Heat Exchangers Mixed Water Chillers Chilled Water Chillers Backup Mixed Water Production from chilled Water Network Chilled Water for dehumidification & Cooling in Ventilation Systems Chilled Water for Tracker System & Cooling in Ventilation Systems Mixed Water for RACKS & Detector Cooling Mixed Water for RACKS SH5 Comp Air SU5 Comp Air The SUX5 chilled water production system consists of 3 separate closed loops – Primary, Mixed & Chilled. Two independent groups of chillers cool water to 5C for chilled water users and 14C for mixed water users. The Primary water heat exchangers transfer the heat created by the chillers to the SF5 cooling towers. 5 groups of distribution pumps then supply this cooled water to the users. The 3 closed loops are refilled from the Eau Bruite supply located in the PM54. The refilling is mainly to compensate for filtering processes.

PM56 EAU BRUITE SH5 Comp Air SU5 Comp Air SUX5 SX5 SR5 SGX5 SX5 SCX5 DEMI WATER POINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER DEMI WATER POINT 4 SH5 SF5 Cooling Towers SUX5 Chilled Water Production USC55 CV Zone Cooling Distribution Point 5 – Cooling Network

COLD BOXRACKS ECAL Aluminum MUONS Aluminum END CAP Copper YOKE Copper BUS BAR Copper HVACTRACKER PM56 EAU BRUITE SUX5 Chilled Water SUX5 Mixed Water DEMI WATER POINT 4 Standard Power Diesel Backup Control Cubicle Equipment Power SH5 Comp Air SU5 Comp Air USC55 Cooling Distribution Chilled Water from SUX5 Chilled Water Production at 5C Mixed Water from SUX5 Chilled Water Production at 14C Demineralised Water Filling Chilled Water Filling Mixed Water Filling Instrument Air For Operating Valves Shared with Tracker & Cyro The cooling circuits in the USC supply water at several different temperatures dependant on the user requirements. The circuits are Chilled, Mixed or Demineralised types, the demineralised circuits are additionally split into copper or aluminum types. Filling water is supplied from the Mixed and Chilled water supply circuits or from the demineralised supply from Point 4. The system is also reliant on compressed air to operate valves and to maintain a constant pressure on the expansion tanks.

PM56 EAU BRUITE SUX5 Primary Water Filling SUX5 Mixed Water Filling SU5 Comp Air SF5 Primary Water Basin SUX5 Chilled Water Filling Fire Fighting Network UXC Fire Fighting Basin (Foam) Point 5 – Eau Bruite & Demi Water DEMI WATER POINT 4 CV Zone – Demi Water Filling Eau Bruite and Demi water are used to refill the cooling circuits at point 5. Loss of supply of these services will eventually lead to a shut down of any circuit whenever a filling valve is opened. Additionally the Eau Bruite circuit is used to maintain a constant pressure to the firefighting network and to maintain the level of the storage tanks for the Foam fire fighting system in the UXC. Loss of the SU5 standard compressed air will stop the Eau Bruite pumps located in the PM56. This air is used to position the flow control valves that are located here. The Eau Bruite pumps are powered by a Diesel Backup power supply. Reservoir Diesel Backup Control Cubicle

SU5 Comp Air Point 5 – Compressed Air Network Currently there is one compressor for the Instrument air Network and one for the standard air network. The proposal is to install an additional 2 new compressors to work in parallel with the existing Instrument air compressor to provide duty standby backup. These compressors can also be linked to the standard air compressor to additionally provide backup to this system. SH5 Comp Air L3 Air Instrument Air Standard Air New SH5 Compressor New SH5 Compressor SH5 Compressor SU5 Compressor Dryer L3 AirInstrument AirStandard Air Existing System Proposed System

DCS VGTCCOOLUSC55 OPC SERVER GTCCOOLUSC55 TECHNICAL NETWORK PCvue Remote PC PCvue Server LOCAL TOUCH PANEL The Cooling systems at Point 5 utilise Duty/Standby PLC’s. This ensure that control is maintained at all times even during a network outage. Data is retrieved from the PLC’s by a OPC server located in the CCC. This OPC server sends requested data to the TIM database from where it is transmitted to the TCR. Analogue variables are published on the DIP database, which the DCS system can retrieve data from. Additionally hardwired contacts from the control system are connected directly to the DSS system. TIM Duty / Standby PLC’s TCRDIP DSS Point 5 – Control & Supervision System