MAUVE CO2 cooling review - 2017 MAUVE control system L. Zwalinski, L. Davoine – CERN EP/DT/FS November 1st, 2017 European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland MAUVE CO2 cooling review - 2017

Control system architecture Data Server ready in CCC cs-ccr-dclhcb 4 cabinets Architecture: 3 cabinets: 1800x1200x400 1 cabinet: 1800x600x500 MAUVE CO2 cooling review - 2017

DIP communication with DCS Released the CPC-COMM Wizard with RP 1.2.0 and WinCC OA CPC Component 6.4.0. by BE-ICS supporting: Additional protocols: SNMP and DIP (in addition to existing BACnet, OPC UA, CMW, S7 polling and Modbus polling). Alarms on WordStatus and AnalogStatus objects. Value (message) conversion for AnalogInput and AnalogStatus objects. We can subscribe to DIP in UNICOS cooling application to display and archive detector temperatures in one common SCADA system. New tool creates data points in our SCADA application. PLC does not see this values. It can be used for monitoring and manual operation purposes. Further development has been requested by EP-DT to BE-ICS to allow for bridge DIP values received from DCS to cooling PLC. MAUVE CO2 cooling review - 2017

Control cabinets design Master - cabinet 1 UT - cabinet 2 Velo - cabinet 3 VFD - cabinet 4 Master control CO2 plant + backup chiller CO2 plant + backup chiller 2x CO2 pumps Each cabinet will be equipped with its own local EMS button. MAUVE CO2 cooling review - 2017

Control cabinets design Master - cabinet 1 UT - cabinet 2 Velo - cabinet 3 Power distribution and redundant hot swappable 24V DC PS PLC and distributed I/Os Power handling (heaters, compressor, etc.) Signal handling and analog valve drivers equipped with battery pack for safety position FESTO pneumatics distribution and valve islands MAUVE CO2 cooling review - 2017

Control cabinet design Power Distribution Discussed & agreed 6 months ago To be validated by EN/EL EBD EXD General Power Experiment Power ESD Backup by a Diesel if EBD lost Transfer switch Automatic UPS Master - cabinet 1 UT - cabinet 2 Velo - cabinet 3 VFD - Cabinet 4 MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Electrical design AutoCAD electrical design is on going. It is very much advanced. So far we have 57 pages for VELO & UT control/electrical cabinet. MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Cable schedules Cable schedules both for internal plant cabling and JB & DB are ready with internal naming convention. The LHCb cable DB scheme is under preparation. We have well received template from Laurent. MAUVE CO2 cooling review - 2017

Process break-down and operation modes Control software follows CERN UNICOS CPC6 framework standard as all the other CO2 cooling systems at CERN. Operation System has been demanded to run in nominal conditions = operation option mode: UT system is demanded to start in Operation Option Mode Velo system is demanded to start in Operation Option Mode Interconnection valves stay close   UT active, Velo passive System has been demanded to run in back-up scenario with UT plant providing CO2 for both detectors: UT system is demanded to start in Active Option Mode Velo system is demanded to start in Passive Option Mode Interconnection valves will open UT passive, Velo active System has been demanded to run in back-up scenario with Velo plant providing CO2 for both detectors: UT system is demanded to start in Passive Option Mode Velo system is demanded to start in Active Option Mode MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Normal Operation MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 UT Active, Velo Passive MAUVE CO2 cooling review - 2017

Normal Operation with Backup Chiller requested If primary chiller DI is OFF (positive logic) then backup chiller will be ON. DSS signal to be discussed with Olivier when BackUp Chiller is ON. MAUVE CO2 cooling review - 2017

Allowance table for CO2 PCO The CO2 system can change it’s operation mode only when system is stopped. In case of need to operate in active/passive scheme system shall be stopped and restarted in desired option mode. Option Mode Operation UT act Velo pas UT pas Velo act x MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 User Interface panels Work on interface panels has started MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Alarms philosophy Damper electrical heater: Alarm level I – Temporary Stop Interlock - heater interlocked if T > 120 °C, restarted when T < 120 °C Alarm level II – Full Stop Interlock - heater interlocked if T > 140 °C, waiting for acknowledge * & T < 120 °C Alarm level III – Hardware Interlock (thermal switch) – all heaters interlocked (mechanically), waiting for acknowledge * & T < 120 °C & thermal switch OK Alarm levels: Alarm level I Warning Group Alarm level II Full Stop Group Membrane CO2 liquid pump: Alarm level I – Temporary Stop Interlock - pump interlocked if membrane P > 5.0 bar, restarted when P < 5 bar Alarm level II – Full Stop Interlock – pump interlocked if membrane P > 10 bar, waiting for acknowledge* & P < 5 bar MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Alarms philosophy UT Alarm groups Velo Alarm groups Main CO2 Alarm groups DSS interlock MAUVE CO2 cooling review - 2017

CO2 main plant – alarm groups Plant Full Stop Interlock: occurs if any of the Process Alarms triggered Main PCO is interlocked no automatic restart alarm indication (mail or/and SMS) Plant Warning: occurs if any of the Process Alarms triggered alarm indication only (mail or/and SMS) MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 UT plant – alarm groups ALARM GROUPS: Plant Communication Pump Electrical heater Pressure Valve Temperature Sensors Filters Manifold MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 UT plant – alarm groups UT Warning: occurs if any of the Process Alarms triggered alarm indication only (mail or/and SMS) UT Full Stop Interlock: occurs if any of the Process Alarms triggered Bpix PCO is interlocked no automatic restart alarm indication (mail or/and SMS) MAUVE CO2 cooling review - 2017

MAUVE CO2 cooling review - 2017 Conclusions Control cabinets 3D CATIA design completed. The electrical design is well progressing. Electrical components mostly selected. Material procurement starts now. FA under preparation. CCC SCADA server ready. SCADA UIs under construction. MAUVE CO2 cooling review - 2017