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Point 5 - Cooling Network - Key
Primary Water
Primary Water at 20-25C – Produced by Cooling Towers
Chilled Water
Chilled Water at 5C – Produced by Chillers
Mixed Water
Mixed Water at 14-18C – Produced by Chillers, Heat Exchangers or by mixing Primary & Chilled water
Demi Water
Demi Water at 16-18C – Produced by Heat Exchangers from either Chilled or Mixed water – Divided into Copper and Aluminum types
Eau Bruite
Standard
Power
Diesel
Backup
Comp Air
Eau Bruite – Supplied for refilling of circuits & the fire fighting network
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
Point 5 - Cooling Network
Primary Water
SF5 Cooling Towers
PRIMARY
22-25 C
MIXED
14-15 C
USC55 CV Zone Cooling Distribution
CHILLED - 7 C
DEMI - 18C
MIXED -16C
Mixed + Chilled + Demi
Water
CHILLED
5C
Mixed + Chilled
Water
SUX5 Chilled Water Production
Point 5 –Security of Supply
Diesel
Backup
Diesel Backup
Power only for
supply of control
Panels
Standard
Power
Standard Power
supply of pumps
& Chillers
SF5 Cooling Towers
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.
SH5
Comp Air
Instrument Air
To CV Zone,
Tracker & CRYO
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
SU5
Comp Air
Standard Air
To Eau Bruite,
Gas Room & UXC
SUX5 Chilled Water Production
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.
Demi Water
supply for
Refilling of
circuits in UXC
DEMI WATER
POINT 4
USC55 CV Zone Cooling Distribution
Eau Bruite for
Refilling of all
circuits & Fire
Fighting network
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
Point 5 – Cooling Network
SH5
Comp Air
SF5 Cooling Towers
SU5
Comp Air
22-25 C
22-25 C
SH5
SUX5 Chilled Water Production
SUX5
SX5
5-6 C
14-15 C
5-6 C
5-6 C
14-15 C
SR5 SGX5
SX5
DEMI WATER
POINT 4
SCX5
USC55 CV Zone Cooling Distribution
TRACKER
HVAC
BUS BAR
YOKE
c
5-6 C
7C
18 C
END CAP
c
18 C
MUONS
c
18 C
ECAL
A
18 C
RACKS
COLD BOX
A
17.9 C +/- 0.02
16 C
14-15 C
PM56
EAU BRUITE
SF5 Cooling Towers
Primary Water
Diesel
Backup
Standard
Power
Control
Cubicle
SH5
Comp Air
SU5
Comp Air
Primary Water Filling
Equipment Power
Redundant Pumps
SH5
SUX5
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.
PM56
EAU BRUITE
Point 5 – Cooling Network
SH5
Comp Air
SF5 Cooling Towers
SU5
Comp Air
SH5
SUX5 Chilled Water Production
SUX5
SX5
SCX5
SR5 SGX5
SX5
DEMI WATER
POINT 4
USC55 CV Zone Cooling Distribution
TRACKER
HVAC
BUS BAR
YOKE
END CAP
MUONS
ECAL
RACKS
COLD BOX
PM56
EAU BRUITE
SUX5 Chilled Water Production
Diesel
Backup
Standard
Power
The 3 closed loops are refilled
from the Eau Bruite supply located
in the PM54. The refilling is mainly
to compensate for filtering
processes.
SF5 Cooling
Towers
Control
Cubicle
SH5
Comp Air
SU5
Comp Air
Equipment Power
Primary Water from Cooling Towers
3.3KV
Power
Primary Water Heat Exchangers
Chiller Power
Primary Water Filling
Chilled Water
Chillers
Mixed Water Chillers
Chilled Water Filling
Mixed Water Filling
Backup Mixed Water
Production from chilled
Water Network
SUX5
SX5
SCX5
Mixed Water for RACKS
SR5 SGX5
SX5
USC55
Chilled Water
Chilled Water for dehumidification
& Cooling in Ventilation Systems
Chilled Water for Tracker System
& Cooling in Ventilation Systems
USC55
Mixed Water
Mixed Water for RACKS & Detector Cooling
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.
PM56
EAU BRUITE
Point 5 – Cooling Network
SH5
Comp Air
SF5 Cooling Towers
SU5
Comp Air
SH5
SUX5 Chilled Water Production
SUX5
SX5
SCX5
SR5 SGX5
SX5
DEMI WATER
POINT 4
USC55 CV Zone Cooling Distribution
TRACKER
HVAC
BUS BAR
YOKE
END CAP
MUONS
ECAL
RACKS
COLD BOX
PM56
EAU BRUITE
USC55 Cooling Distribution
Diesel
Backup
Standard
Power
SH5
Comp Air
SU5
Comp Air
The cooling circuits in the USC supply water at several
different temperatures dependant on the user requirements.
Control
Cubicle
The circuits are Chilled, Mixed or Demineralised types, the
demineralised circuits are additionally split into copper or
aluminum types.
Equipment Power
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.
Instrument Air
For Operating Valves
Shared with Tracker & Cyro
Chilled Water from SUX5
Chilled Water Production at 5C
SUX5
Chilled Water
SUX5
Mixed Water
Mixed Water from SUX5
Chilled Water Production at 14C
Chilled Water
Filling
Demineralised Water Filling
Mixed Water Filling
DEMI WATER
POINT 4
TRACKER
HVAC
BUS BAR
Copper
YOKE
Copper
END CAP
Copper
MUONS
Aluminum
ECAL
Aluminum
RACKS
COLD BOX
PM56
EAU BRUITE
Point 5 – Eau Bruite & Demi Water
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.
SU5
Comp Air
SF5 Primary Water Basin
Reservoir
UXC Fire Fighting Basin (Foam)
Fire Fighting Network
SUX5 Primary Water Filling
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.
SUX5 Chilled Water Filling
SUX5 Mixed Water Filling
The Eau Bruite pumps are powered by a Diesel
Backup power supply.
Diesel
Backup
Control
Cubicle
CV Zone – Demi Water Filling
DEMI WATER
POINT 4
PM56
EAU BRUITE
Point 5 – Compressed Air Network
SH5
Comp Air
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.
L3 Air
Instrument Air
SU5
Comp Air
Standard Air
Existing System
New SH5
New SH5
SH5
Compressor Compressor Compressor
Dryer
L3 Air
SU5
Compressor
Dryer
Instrument Air
Proposed System
Standard Air
Point 5 – Control & Supervision System
TCR
DIP
DCS
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.
TIM
PCvue Server
VGTCCOOLUSC55
Remote
PC
Additionally hardwired contacts from the control system
are connected directly to the DSS system.
OPC SERVER
TECHNICAL NETWORK
DSS
PCvue
GTCCOOLUSC55
LOCAL TOUCH PANEL
Duty / Standby PLC’s