Control Logic for ATLAS Thermosiphon Chiller Brine and Water Circuit L

Control Logic for ATLAS Thermosiphon chiller brine and water circuit L. Zwalinski – EP/DT March 2016

Control Logic for ATLAS thermosiphon chiller brine and water circuit 1 Control for ATLAS thermosiphon chiller, brine and water system

■ Standard CERN UNICOS control system  Control layer: 1 PLC Schneider Premium located in SX1  SCADA Layer: 1 WinCC-OA Project located in CCR

■ External communications  Exchange of temperature and set-point with Thermosiphon PLC (hardwire)  Interlocks sent to DSS (hardwire): to be done  Process data and installation status sent to ATLAS DCS (MODBUS)  Publication of all sensors/alarms/status for ATLAS DCS (DIP)  Alarm summaries sent to CCC (LASER)

Control Logic for ATLAS thermosiphon chiller brine and water circuit 2 Control for ATLAS thermosiphon chiller, brine and water system

■ Documentation

 All control logic is described in Functional Analysis:

 Water and Brine system EDMS #1216919

 Functional analysis C6F14 Chiller No 1 EDMS #1165941

 Brine and water circuit I/O commissioning tests EDMS #1323221

 Specification of control interface between Thermosiphon 60kW - Chiller Cooling Control System and ATLAS Detector Control System EDMS #1541750

 Specification of CCC alarms for the Thermosiphon 60kW Chiller, Brine and Water system EDMS #1355443

Control Logic for ATLAS thermosiphon chiller brine and water circuit 3 Overall control system architecture

ATLAS DCS

DIP OWS OWS OWS

Brine+Water+Chiller1&2 Thermosiphon CERN GPN

Brine Chiller 1 Water

CPU + I/O cards I/O cards I/O cards Thermosiphon + Master surface TSX REY 200 back plane extension back plane extension Premium CPU + I/O cards

back plane extension Max 250m surface

I/O cards

+ Slave Hard wired communication Thermosiphon TSX REY 200 underground

Control Logic for ATLAS thermosiphon chiller brine and water circuit 4 Brine and Water circuit decomposition

SX1

Brine Water Chiiller1

EDMS Pump1 Pump1 EH1301ON EH1301ON 1165951 EH1301R EH1301R PV1301 PV1301 CIP1301 CIP1501 PV1801 PV1801 CIP1301R CIP1501R EH1301 EH1301 FI1301ON PCV1303 PCV1303 FI1301R PV1302 Pump2 Chiiller2 CIP1501 Pump2 CIP1501R

CIP1302 EDMS CIP1302R TapWater Xxxxxx?? FI1302ON FI1302R PV1901 PV1304

Control Logic for ATLAS thermosiphon chiller brine and water circuit 5 Chiller P&ID vs process decomposition Air Cooled Condenser Economizer HT Economizer LT

CV59235 Cascade Condenser

Normal operation evaporator

Warm operation evaporator

R404

R23

Chiller is very complex machine! Control Logic for ATLAS Thermosiphon circuit 6 Chiller circuit decomposition

C6F14 Chiller No 1

Actuators: R404a Compressor EV-53003 R23 Compressor EV-53007

Economiser 'Warm Cascade Air Cooled Actuators: Actuators: Economiser 'Normal (High Temp) Operation' Condenser Condenser COMP-59502DO COMP-59512DO (Low Temp) Operation' EHT {E-59507} Evaporator CC {C-59508} ACC {C-59505} CV-59201 CV-59301 ELT {E-59510} Evaporator WOE {E-59516} CV-59202 CV-59302 NOE {E-59509} CV-59213 GT-59364AI GT-59263AI

Actuators: Actuators: Actuators: Actuators: Actuators: Actuators: CV-59235 CV-59240 CV-59232 F-59506ADO CV-59326 CV-59330 EV-59246 CV-59233 F-59506BDO CV-59331 F-59506CDO CV-59332 F-59506DDO CV-59333 EV-59225 CV-59318 EV-59266 EV-59314 EV-59267 EV-59268 EV-59269

PROCESS DECOMPOSITION

Control Logic for ATLAS thermosiphon chiller brine and water circuit 7 Overall Chiller Brine and Water commands - decomposition

System operation states:

Go to Maintenance And not Run Order STOP Maintenance Operation Not Go to Maintenance (operator)

SX1 Run Order Go to STOP AND OPERATION (operator request) NOT Run ORDER

RUN Operation BRINE WATER Chiller1 STOP OFF OFF OFF OPERATION ON ON Man.ON MAINTENACE Maint. Maint. Maint.

SX1 master PCO: • CSMA_SX1_AirFlow_AL • CSMA_SX1_230VAC_FS • CSMA_SX1_24VDC_FS • CSMA_SX1_PLC_R_FS • CSMA_SX1_EMS_FS • CSMA_SX1_AirP_FS

In consequence => all water, brine and chiller system will STOP!! Control Logic for ATLAS thermosiphon chiller brine and water circuit 8 Water Circuit in SH1

Go to Maintenance And not Run Order STOP Maintenance Operation Not Go to Maintenance (operator)

SX1 Run Order Go to STOP AND OPERATION (operator request) NOT Run ORDER

RUN Operation

WATER system & Pump PCO [Stop]: This is the fail safe state in which all units and actuators are stopped. [Run]: Nominal state in which Water system is operated with one pump and tap water units in Operation mode. Selected pump depends on the priority or availability. [Maintenance]: Water system is in Maintenance and all units are in Maintenance mode.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 9 Water Circuit regulations

Regulations: 1. Tap water inlet valve control (PV1901) - based on water system pressure (PT1901) • SET to OPEN if PT1901 < tL • RESET to CLOSE if PT1901 > tH 2. Chiller water inlet control valve (PCV1531) - controlled on R404 compressor 1 discharge pressure, however at the 2 moment best chiller performance is achieved when the valve is fully open. Alarms which stop all water system: • Leak alarm • Main insulator is off In consequence • High temperature => chiller shall run in Warm Mode • PDT • No flow etc. Alarms which stop individual pump: CSMA_WP1_NoFlow_FS CSMA_WP1_HT_FS In consequence CSMA_WP1_Com_FS => second pump CSMA_WP1_CB_FS will start CSMA_WP1_EMS_FS etc. automatically

Control Logic for ATLAS thermosiphon chiller brine and water circuit 10 Brine Circuit

Go to Maintenance And not Run Order STOP Maintenance Operation Not Go to Maintenance (operator)

SX1 Run Order Go to STOP AND OPERATION (operator request) NOT Run ORDER

RUN Operation Brine system & Pump PCO [Stop]: This is the fail safe state in which all units and actuators are stopped but tank control.

[Run]: Nominal state in which Brine system is operated with one pump unit in operation mode. Pump is selected by the priority or availability.

[Maintenance]: Brine system is in Maintenance and all sub units are in Maintenance mode.

Additional functionalities: • pump auto swap procedure based on priority selection • leak detection mechanism • tank pressure control.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 11 Brine Circuit regulations

Regulations: 1) CIP1301x pump speed control: 5 o MV: dP over the pump o SP: 5.0 bara 4 2) PCV1304 3 way bypass valve control: o MV: chiller return temperature TT1308 o SP: Brine temperature set point – 0.5 1 3) EH1301 - Brine dummy load (40kW heater) control: 3 o MV: brine temperature before TS 2 condenser TT1109 o SP: Brine temperature set point arrives from TS PLC.

4) PCV1303 Brine, condenser by-pass valve control: always fully OPEN 5) PV801 & PV1802 keep tank pressure inside 2-3bara “window”

Control Logic for ATLAS thermosiphon chiller brine and water circuit 12 Brine Circuit Alarms

CSMA_B_Llevel_AL Too low C6F14 level - LT1301 FS CSMA_B_PT1303_AL Brine pressure PT1303 too high FS CSMA_B_HP_AL PT1301 OR PT1302 too high FS Stop all the Brine system CSMA_B_LP_AL Brine pressure before filters too low FS CSMA_B_HT_AL Any Brine TT except TT1310 too high FS CSMA_B_MSec_FS NOT Msec_OK FS CSMA_B_Leak_AL Brine leak rate too high AL Only for information CSMA_B_MV1305_SI Manual outlet valve closed SI Brine system start is not allowed

CSMA_B_EH1301_nfl_TS Brine heater No Flow Alarm TS

CSMA_B_EH1301HT_ST Heater temperature exceeded TS STOP EH1301 CSMA_B_CB_ST NOT CB_EH1301_OK TS CSMA_B_Triac_ST NOT EH1301OK TS CSMA_B_TS_ST NOT TS1301 TS

CSMA_BP1_FI1301_FS FI1301 not OK FS CSMA_BP1_FI1301C_FS FI1301 command problem FS CSMA_BP1_HT_FS NOT CIP1301PTC FS CSMA_BP1_HP_FS NOT PS1301 FS CSMA_BP1_LP_FS Pump low pressure alarm FS CSMA_BP1_GS_FS Valve closed alarm FS Stop Pump 1 and start Pump 2 CSMA_BP1_EMS_FS Emergency Stop Button Alarm FS CSMA_BP1_CB_FS Circuit Breaker Tripped FS CSMA_BP1_HP_AL Pump1 high pressure exceeded FS CSMA_BP1_PDT1301_AL Pump1 differential pressure exceeded FS

Control Logic for ATLAS thermosiphon chiller brine and water circuit 13 Brine Circuit – pumps detailed view

Control Logic for ATLAS thermosiphon chiller brine and water circuit 14 Chiller stepper (operation modes)

Control Logic for ATLAS thermosiphon chiller brine and water circuit 15 Chiller stepper

[0] Stopped: Both compressors are switched off, either by the operator or by the switches on the individual compressor starters [R404a Compressor AUTODI = 0 and OFFDI = 1 and R23 Compressor AUTODI = 0 and OFFDI = 1], all outputs are off

including EV53003DO {C6F14 ‘Warm Operation’ Evaporator} and EV53007DO {C6F14 ‘Normal Operation’ Evaporator}.

[1] Available for Warm Operation (WCC): The R404a compressor {COMP-59502} is not running, but is available to start, (see Operation State Definition for each compressor). EV-53003 is closed [GH53003 = 0], EV-53007 is closed [GL53007 = 1]. The chiller will be using the Water Cooled Condenser and the automatic changeover valves have been set and confirmed for this condenser; EV-59266 is closed [GL59266

= 1], EV-59267 is open [GH59267 = 1], EV-59268 is closed [GL59268 = 1]. A C6F14 pump is confirmed as running

[2] Available for Warm Operation (ACC): The R404a compressor {COMP-59502} is not running, but is available to start (see Operation State Definition for each compressor). EV-53003 is closed [GH53003 = 0], EV-53007 is closed [GL53007 = 1]. The chiller is using the Air Cooled Condenser and the automatic changeover valves have been set and confirmed for this condenser; EV-59266 is open [GH59266 = 1], During ‘Normal Operation’, the chiller will pulldown the C6F14 ‘brine’ temperature EV-59267 is closed [GL59267 = 1], EV-59268 is open [GH59268 = 1]. Condenser fans are healthy and switched to auto. A C F pump is confirmed as running from -22.00OC to -70.25 OC through the ‘Normal Operation’ Evaporator {E-59509} 6 14 after opening actuated isolating valve {V-53007} and closing actuated isolating [3] Available for Normal Operation: Both compressors are available to start. (see Operation State Definition for each compressor). A C F pump is confirmed as running valve {V-53003}. The ‘brine’ Chiller will then produce a cooling capacity between 6 14 and both EV-53003 {C6F14 ‘Warm Operation’ Evaporator} or EV-53007 {C6F14 ‘Normal 36kW and 180kW. However, {V-53007} will not open until R23 suction pressure Operation’ Evaporator} are closed [GH53003 = 0, and GH53007 = 0]. The chiller is reaches a normal operating level. using the Water Cooled Condenser and the automatic changeover valves have been set and confirmed for this condenser; EV-59266 is closed [GL59266 = 1], EV-59267 is open [GH59267 = 1], EV-59268 is closed [GL59268 = 1]. When the chiller operates in “Warm Operation” mode the R23 circuit will not be [4] Warm Operation with Air Cooled Condenser ACC: The R404a compressor required. {COMP-59502} is running. EV-53003 is open [GH53003 = 1], EV-53007 is closed [GL53007 = 1], The R23 compressor {COMP-59512} is not required, so its status is During “Warm Operation” the chiller will pulldown the ‘brine’ temperature from ignored. Air Cooled condenser is running. 0.0oC to -20.81oC through the ‘Warm Operation’ Evaporator {E-59516} after [5] Normal Operation: Both compressors are running. EV-53003 is closed [GL53003 opening actuated isolating valve {V-53003} while keeping actuated isolating valve = 1], EV-53007 is open [GH53007 = 1]. {V-53007} closed. The Chiller will then produce a cooling capacity between 10kW [6] Warm Operation with Water Cooled Condenser WCC: The R404a compressor and 50kW. Nonetheless, V-053003 will not open if the upstream ‘brine’ temperature {COMP-59502} is running. EV-53003 is open [GH53003 = 1], EV-53007 is closed is below -22°C. [GL53007 = 1], The R23 compressor {COMP-59512} is not required, so its status is ignored. Water Cooled Condenser is running.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 16 Chiller global alarms

Alarm name Description Type Affected unit/actuator Ch1_Ch_BWTAL C6F14 Warm Operation Temperature High AL Ch1_Ch_Chiller Only for information Ch1_Ch_BNTAL C6F14 Normal Operation Temperature High AL Ch1_Ch_Chiller Only for information Ch1_Ch_EMS_FS Common Control Emergency Stop FS Ch1_Ch_Chiller STOP unit, restart only if cause disappear and operator ack. Ch1_Ch_PSU1 Common Control Panel 24Vdc PSU No 1 off AL Ch1_Ch_Chiller Only for information Ch1_Ch_PSU2 Common Control Panel 24Vdc PSU No 2 off AL Ch1_Ch_Chiller Only for information Ch1_Ch_PSU3 Common Control Panel 24Vdc PSU No 3off AL Ch1_Ch_Chiller Only for information Ch1_Ch_PSU4 Common Control Panel 24Vdc PSU No 4off AL Ch1_Ch_Chiller Only for information Ch1_Ch_PHCB Common Control Panel Heater Fail AL Ch1_Ch_Chiller Only for information Ch1_Ch_EV53003F_FS EV53003 Fuse Fail FS Ch1_Ch_Chiller STOP unit, restart only if cause disappear and operator ack. Ch1_Ch_EV53007F_FS EV53007 Fuse Fail FS Ch1_Ch_Chiller STOP unit, restart only if cause disappear and operator ack.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 17 Chiller R404 circuit

Control Logic for ATLAS thermosiphon chiller brine and water circuit 18 [1] Stopped: The compressor is not running. The compressor has been commanded to stop Chiller R404 stepper either by the operator or by the switch on the compressor starter control panel (AUTODI = 0, OFFDI = 1) or a ‘Full Stop Interlock’ has been triggered (one or more of the compressor operating parameters has reached a software trip threshold and stopped the compressor) or a hard wired protection device has stopped the compressor).

[2] Waiting: The compressor is not running. It is not tripped. The starts per hour & stop to start timer are running OR (EV53007 OR EV53003 is open).

[3] Available: The compressor is not running, it is not tripped, it is not waiting, the starter control panel switch is in the ‘ON’ position (AUTODI = 1 & OFFDI = 0). The compressor is waiting for a command to start.

[4] Running Auto/Manual: The compressor has been selected to ‘Auto’ on the local HMI or WINCC OA and has been commanded to start and is running normally within the designed operating envelope and can vary its speed according to the R404a Compressor Speed Controller OR the compressor has been selected to ‘Manual’ on the local HMI or WINCC OA and has been commanded to start by the manual ‘soft key’ start button on the HMI or manual start via PCO faceplate and can vary its speed according to the local ‘soft keys’ Manual Speed Increase & Manual Speed Decrease.

[6] Running non economised: The compressor has been commanded to start and is running normally within the designed operating envelope and can vary its speed according to the R404a Compressor Speed Controller if selected to auto, or by the local ‘soft’ buttons on the HMI if selected to manual. However, IF Ch1_R404_PT59207 {R404a Compressor Discharge Pressure} <11.77 bara OR R404a Compressor Speed < 85% then the economiser is switched off.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 19 Chiller high temperature stage Alarms

Alarm name Description Type Affected unit/actuator Ch1_Ch_BWTAL C6F14 Warm Operation Temperature High AL Ch1_Ch_Chiller Only for information Ch1_R404_LP_AL R404 Compressor Suction Pressure Low Alarm FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_HP_AL R404 Compressor Discharge Pressure High Alarm FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_ODP_AL R404 Compressor Oil Differential Pressure Low Alarm FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_OFDP_AL R404 Compressor Oil Filter Differential Pressure High Alarm FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_HT_AL R404 Compressor Discharge Temperature High Alarm FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_DSH_AL R404 Compressor Discharge Superheat Alarm AL Ch1_R404_R404 Only for information Ch1_EHT_SH_AL Economiser (High Temp) Superheat alarm AL Ch1_EHT_EHT Only for information Ch1_WOE_SH_AL Warm Operation Evaporator Superheat alarm AL Ch1_WOE_WOE Only for information Ch1_CC_SH_AL Cascade Condenser Superheat alarm AL Ch1_CC_CC Only for information Ch1_R404_EMS_FS R404 Compressor Emergency Stop FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_F1_FS R404 Compressor Starter Input Fuse No 1 Failed FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_F2_FS R404 Compressor Starter Input Fuse No 2 Failed FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_F3_FS R404 Compressor Starter Input Fuse No 3 Failed FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_Starter_FS R404 Compressor Starter Fault FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_24VDC_FS R404 Compressor Starter 24Vdc Power Supply Fault FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_PSH59209_FS R404 Compressor Discharge Pressure Switch Trip FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_TS59259_FS R404 Compressor Discharge Temperature Switch FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_TS59260_FS R404 Compressor High Motor Temperature Switch FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_LS59250_FS Oil Separator Low Level Switch FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_PdS59206_FS Oil Differential Pressure Switch FS Ch1_R404_R404 STOP unit, restart only if cause disappear and operator ack. Ch1_R404_OHCB R404a Oil Separator Heater Circuit Breaker Tripped AL Ch1_R404_R404 Only for information Ch1_R404_THCB Cooling Water Trace Heating Circuit Breaker Tripped AL Ch1_R404_R404 Only for information Ch1_R404_CV59202_F R404a Compressor Load Valve Fuse Failure TS Ch1_R404_CV59202 STOP unit and automatically restart if cause disappear Ch1_R404_CV59201_F R404a Compressor Unload Valve Fuse Failure TS Ch1_R404_CV59201 STOP unit and automatically restart if cause disappear Ch1_R404_CV59213_F R404a Compressor Liquid Injection Valve Fuse Failure TS Ch1_R404_CV59213 STOP unit and automatically restart if cause disappear Ch1_EHT_CV59235_F Economiser (High Temp) Expansion Valve Fuse Fail TS Ch1_EHT_CV59235 STOP unit and automatically restart if cause disappear Ch1_WOE_CV59240_F Warm Operation Evaporator Expansion Valve Fuse Fail TS Ch1_WOE_CV59240 STOP unit and automatically restart if cause disappear Ch1_WOE_EV59246_F Warm Operation Evaporator Hot Gas Valve Fuse Fail TS Ch1_WOE_EV59246 STOP unit and automatically restart if cause disappear Ch1_CC_CV59232_F Cascade Condenser Expansion Valve No.1 Fuse Fail TS Ch1_CC_CV59232 STOP unit and automatically restart if cause disappear Ch1_CC_CV59233_F Cascade Condenser Expansion Valve No.2 Fuse Fail TS Ch1_CC_CV59233 STOP unit and automatically restart if cause disappear Ch1_ACC_F59506A_T Air Cooled Condenser Fan 1 Fail TS Ch1_ACC_F59506A STOP unit and automatically restart if cause disappear Ch1_ACC_F59506B_T Air Cooled Condenser Fan 2 Fail TS Ch1_ACC_F59506B STOP unit and automatically restart if cause disappear Ch1_ACC_F59506C_T Air Cooled Condenser Fan 3 Fail TS Ch1_ACC_F59506C STOP unit and automatically restart if cause disappear Ch1_ACC_F59506D_T Air Cooled Condenser Fan 4 Fail TS Ch1_ACC_F59506D STOP unit and automatically restart if cause disappear Ch1_ACC_EV59266_F Air Cooled Condenser Inlet Valve Fuse Fail TS Ch1_ACC_EV59266 STOP unit and automatically restart if cause disappear Ch1_ACC_EV59267_F Water Cooled Condenser Outlet Valve Fuse Fail TS Ch1_ACC_EV59267 STOP unit and automatically restart if cause disappear Ch1_ACC_EV59268_F Air Cooled Condenser Outlet Valve Fuse Fail TS Ch1_ACC_EV59268 STOP unit and automatically restart if cause disappear Ch1_ACC_EV59269_F Water Cooled Condenser Drain Valve Fuse Fail TS Ch1_ACC_EV59269 STOP unit and automatically restart if cause disappear Ch1_ACC_EV59225_F Water Cooled Condenser Inlet Valve Fuse Fail TS Ch1_ACC_EV59225 STOP unit and automatically restart if cause disappear

Control Logic for ATLAS thermosiphon chiller brine and water circuit 20 Chiller R23 circuit

Control Logic for ATLAS thermosiphon chiller brine and water circuit 21 Chiller R23 stepper

[1] Stopped: The compressor is not running. The compressor has been commanded to stop either by the operator or by the switch on the compressor starter control panel. (AUTODI = 0, OFFDI = 1) or one or more of the compressor operating parameters has reached a software trip threshold, or a hard wired protection device has stopped the compressor.

[2] Waiting: The compressor is not running. It is not tripped. The starts per hour timer & stop to start timer are running, or EV53007 is open (GH53007 = 1, OffSt)

OR C6F14 brine flow is <= 6.0 kg/s

[3] Available: The compressor is not running, it is not tripped, it is not waiting, and the starter control panel switch is in the ‘ON’ position (AUTODI = 1 & OFFDI = 0).

The compressor is waiting for a command to start. C6F14 brine flow is >= 10.0 kg/s and not T0.

[4] Start Inhibit: The compressor is not running, it is available, it has been commanded to start but is prevented because Ch1_CC_PT-59321 {Cascade Condenser Inlet Pressure} > 16.0 bara.

[5] Running Auto/Manual: The compressor has been commanded to start and is running normally within the designed operating envelope and can vary its speed according to the R23 Compressor Speed Controller if selected to auto OR the compressor has been selected to ‘Manual’ on the local HMI or WinCC OA and has been commanded to start by the manual ‘soft key’ start button on the HMI or manual start via PCO faceplate and can vary its speed according to the local ‘soft keys’ Manual Speed Increase & Manual Speed Decrease.

[7] Running non economised: The compressor has been commanded to start and is running normally within the designed operating envelope and can vary its speed according to the R23 Compressor Speed Controller, but Ch1_R23_PT59336 {R23 Compressor Suction Pressure} >2.5 bara OR the economiser is switched off OR brine temperature Ch1_Ch_TT53102 > -45oC.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 22 Chiller low temperature stage Alarms

Alarm name Description Type Affected unit/actuator Ch1_Ch_BWTAL C6F14 Warm Operation Temperature High AL Ch1_Ch_Chiller Only for information Ch1_R23_LP_AL R23 Compressor Suction Pressure Low Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_HP_AL R23 Compressor Discharge Pressure High Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_ODP_AL R23 Compressor Oil Differential Pressure Low Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_OFDP_AL R23 Compressor Oil Filter Differential Pressure High Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_HT_AL R23 Compressor Discharge Temperature High Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_OT_AL R23 Compressor Oil Temperature Alarm FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_DSH_AL R23 Compressor Discharge Superheat Alarm AL Ch1_R23_R23 Only for information Ch1_ELT_SH_AL Economiser (Low Temp) Superheat alarm AL Ch1_ELT_ELT Only for information Ch1_NOE_SH_AL Normal Operation Evaporator Superheat alarm AL Ch1_NOE_NOE Only for information Ch1_R23_EMS_FS R23 Compressor Emergency Stop FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_F1_FS R23 Compressor Starter Input Fuse No 1 Failed FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_F2_FS R23 Compressor Starter Input Fuse No 2 Failed FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_F3_FS R23 Compressor Starter Input Fuse No 3 Failed FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_Starter_FS R23 Compressor Starter Fault FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_24VDC_FS R23 Compressor Starter 24Vdc Power Supply Fault FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_PSH59310_FS R23 Compressor Discharge Pressure Switch Trip FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_TS59339_FS R23 Compressor Discharge Temperature Switch FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_TS59338_FS R23 Compressor High Motor Temperature Switch FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_LS59347_FS Oil Separator Low Level Switch FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_PdS59307_FS Oil Differential Pressure Switch FS Ch1_R23_R23 STOP unit, restart only if cause disappear and operator ack. Ch1_R23_OHCB R23 Oil Separator Heater Circuit Breaker Tripped TS Ch1_R23_R23 STOP unit and automatically restart if cause disappear Ch1_R23_CV59302_F R23 Compressor Load Valve Fuse Failure TS Ch1_R23_CV59302 STOP unit and automatically restart if cause disappear Ch1_R23_CV59301_F R23 Compressor Unload Valve Fuse Failure TS Ch1_R23_CV59301 STOP unit and automatically restart if cause disappear Ch1_ELT_CV59326_F Economiser (Low Temp) Expansion Valve Fuse Fail TS Ch1_ELT_CV59326 STOP unit and automatically restart if cause disappear Ch1_NOE_CV59330_F Normal Operation Evaporator Expansion Valve No 1 Fuse Fail TS Ch1_NOE_CV59330 STOP unit and automatically restart if cause disappear Ch1_NOE_CV59331_F Normal Operation Evaporator Expansion Valve No 2 Fuse Fail TS Ch1_NOE_CV59331 STOP unit and automatically restart if cause disappear Ch1_NOE_CV59332_F Normal Operation Evaporator Expansion Valve No 3 Fuse Fail TS Ch1_NOE_CV59332 STOP unit and automatically restart if cause disappear Ch1_NOE_CV59333_F Normal Operation Evaporator Expansion Valve No 4 Fuse Fail TS Ch1_NOE_CV59333 STOP unit and automatically restart if cause disappear Ch1_NOE_EV59314_F Normal Operation Evaporator Hot Gas Valve Fuse Fail TS Ch1_NOE_EV59314 STOP unit and automatically restart if cause disappear Ch1_NOE_CV59318_F Normal Operation Evaporator De-Oiling Valve Fuse Fail TS Ch1_NOE_CV59318 STOP unit and automatically restart if cause disappear

Control Logic for ATLAS thermosiphon chiller brine and water circuit 23 CCC Alarms

Control Logic for ATLAS thermosiphon chiller brine and water circuit 24 LHC Logging – active since 10.2014

Brine temperature TT1305

Control Logic for ATLAS thermosiphon chiller brine and water circuit 25 System tests:

■ Alarm thresholds tuning. ■ PID parameters tuning. ■ Orifice brine flowmeter and scale calibration. ■ Several brine issues solved EDMS 1498362. ■ Brine cooling speed checked. ■ Brine pump performance checked. ■ Chiller performance checked EDMS 1554017 v.1 ■ Chiller test performed large number of times in different configurations. This has indicated need of significant control methods modifications requested by J&E Hall. ■ Water system operation tests completed. ■ Failure modes (Alarms) for Brine & Water are verified. ■ Failure modes (Alarms) for Chiller, verified but result on power cut is not yet satisfactory. ■ And much more.

■ Please see also:  ‘Thermosiphon Chiller commissioning procedure’ EDMS 1535476

Control Logic for ATLAS thermosiphon chiller brine and water circuit 26 Conclusions:

■ System is fully operational. ■ All communication channels but DSS are active ■ Still some control changes required due to the chiller modifications minor/major? Not clear for the moment. ■ Is there anything on Chiller, Brine or Water side that can damage the detector? No as far as I can imagine for the upcoming test.

Control Logic for ATLAS thermosiphon chiller brine and water circuit 27 Backup slides

■ Touch screen application for the Thermosiphon 60kW Chiller as an example ■ Brine and Water touch screen application is not presented in this ppt

Control Logic for ATLAS Thermosiphon circuit 28 Welcome panel Main panel

Push navigation buttons Main panel

State indication Double click action

Local mode indication

Double click available after log in PVSS main panel

Local mode indication Chiller Stepper Chiller Alarms

Double click

Double click Chiller Alarms List Chiller input/output temp. terend R404 compressor panel R404 stepper panel R404 alarm panel R404 Economiser High Temperature panel R404 Warm Operation Evaporator panel R404 Cascade Condenser panel R404 Air Cooled Condeser panel R23 Compressor panel R23 Stepper panel R23 Alarms panel R23 Economiser Low Temperature panel R23 Normal Operation Evaporator panel R23 NOE Alarms panel