Point 5 - Cooling Network - Key

Primary Water

Chilled Water

Mixed Water

Eau Bruite

Standard Power

DieselBackup

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

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Point 5 - Cooling Network SF5 Cooling Towers

SUX5 Chilled Water Production

USC55 CV Zone Cooling Distribution

CHILLED5 C

MIXED14-15 C

PRIMARY22-25 C

CHILLED - 7 C DEMI - 18C MIXED -16C

DEMI WATERPOINT 4

DEMI WATERPOINT 4

PM56EAU BRUITE

SH5Comp Air

SU5Comp Air

Standard Power

DieselBackup

SF5 Cooling Towers

SUX5 Chilled Water Production

USC55 CV Zone Cooling Distribution

Point 5 –Security of Supply

Instrument AirTo CV Zone, Tracker & CRYO

Standard AirTo 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 refilledFailure 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

PM56EAU BRUITE

SH5Comp Air

SU5Comp Air

SUX5SX5

SR5 SGX5SX5

SCX5

DEMI WATERPOINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER

DEMI WATERPOINT 4

SH5

SF5 Cooling Towers

SUX5 Chilled Water Production

USC55 CV Zone Cooling Distribution

Point 5 – Cooling Network

5-6 C

5-6 C5-6 C 14-15 C

14-15 C

5-6 C 7 C 18 C 18 C 18 C 18 C 17.9 C +/- 0.02 16 C 14-15 C

22-25 C

22-25 C

c c c A A

SF5 Cooling TowersPrimary Water

Redundant Pumps

SH5

SUX5

PM56EAU BRUITE

Standard Power

DieselBackup

ControlCubicle

Equipment Power

SH5Comp Air

SU5Comp 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

PM56EAU BRUITE

SH5Comp Air

SU5Comp Air

SUX5SX5

SR5 SGX5SX5

SCX5

DEMI WATERPOINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER

DEMI WATERPOINT 4

SH5

SF5 Cooling Towers

SUX5 Chilled Water Production

USC55 CV Zone Cooling Distribution

Point 5 – Cooling Network

SUX5SX5

SR5 SGX5SX5

SCX5

PM56EAU BRUITE

USC55Chilled Water

USC55Mixed Water

Standard Power

DieselBackup

ControlCubicle

Equipment Power

3.3KV Power

Chiller Power

SUX5 Chilled Water ProductionSF5 Cooling

Towers

Primary Water Filling

Mixed Water Filling

Chilled Water Filling

Primary Water from Cooling Towers

Primary Water Heat Exchangers

Mixed Water ChillersChilled Water Chillers

Backup Mixed WaterProduction 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

SH5Comp Air

SU5Comp 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.

PM56EAU BRUITE

SH5Comp Air

SU5Comp Air

SUX5SX5

SR5 SGX5SX5

SCX5

DEMI WATERPOINT 4 COLD BOXRACKSECALMUONSEND CAPYOKEBUS BARHVACTRACKER

DEMI WATERPOINT 4

SH5

SF5 Cooling Towers

SUX5 Chilled Water Production

USC55 CV Zone Cooling Distribution

Point 5 – Cooling Network

COLD BOXRACKSECAL

AluminumMUONS

AluminumEND CAP

CopperYOKECopper

BUS BARCopper

HVACTRACKERPM56

EAU BRUITE

SUX5Chilled Water

SUX5Mixed Water

DEMI WATERPOINT 4

Standard Power

DieselBackup

ControlCubicle

Equipment Power

SH5Comp Air

SU5Comp 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 AirFor Operating ValvesShared 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.

PM56EAU BRUITE

SUX5 Primary Water Filling

SUX5 Mixed Water Filling

SU5Comp Air

SF5 Primary Water Basin

SUX5 Chilled Water Filling

Fire Fighting Network

UXC Fire Fighting Basin (Foam)

Point 5 – Eau Bruite & Demi Water

DEMI WATERPOINT 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

DieselBackup

ControlCubicle

SU5Comp 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.

SH5Comp Air

L3 Air Instrument Air Standard Air

New SH5Compressor

New SH5Compressor

SH5Compressor

SU5Compressor

Dryer Dryer

L3 Air Instrument Air Standard 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

TCR DIP

DSS

Point 5 – Control & Supervision System